SlideShare a Scribd company logo
ICT – TECHNICAL DRAFTING – Grade 10
116
Content Standard Performance Standard
The learner demonstrates
understanding of concepts and
underlying principles in drafting
structural layout and details
using Computer-Aided Design
(CAD).
The learner independently
drafts structural layout and
details following the job
requirements using Computer-
Aided Design (CAD).
Quarter III Time Allotment: 12 hrs.
MODULE 4
DRAFTING STRUCTURAL LAYOUT AND DETAILS
USING COMPUTER-AIDED DESIGN (CAD)
Introduction
Technology and Livelihood Education (TLE) is one of the nomenclature
in the implementation of the K to 12 Basic Education Program (BEP)
composed of four components namely: Agri-Fishery Arts, Home Economics,
Industrial Arts and Information and Communication Technology (ICT). In this
module, the focus is on Drafting Structural Layout and Details using CAD.
In this course, you will be introduced to different learning activities that
will prepare you to be skillful before you to do the actual work as a draftsman
and to be more confident to start your own CAD business.
This module is specifically designed to hone your knowledge and skills
specifically on Process and Delivery where you have a hands-on activities
as you go along. The learning procedures are divided into different sections
such as: What to Know, What to Process, What to Reflect and
Understand, and What to Transfer.
So, explore and experience the lessons in Structural Layout and
Details using CAD and be a step closer to being a skillful draftsman.
ICT – TECHNICAL DRAFTING – Grade 10
117
ENJOY YOUR JOURNEY!
Objectives:
Upon completion of this module, you are expected to:
 draft foundation plans
 draft structural floors and roof framing plans
*****
Pre-Assessment:
You will be challenged to recall your prior knowledge and experiences
about drafting structural layout and details. This Phase will guide you in
assessing yourself by answering the questions below. It will also give you the
opportunity to explore the basics of drafting structural layout and details using
CAD.
Directions: Choose the letter of the correct answer. Write your answer in the
space provided to each number.
_____ 1. Which circle is drawn with a bow compass?
A. 360° circle C. irregular curve
B. circle template D. flexible curve
_____ 2. Where do you set your compass to draw a 21/2 diameter-circle?
A. 1.25” B. 1.50” C. 2.00” D. 2.50”
ICT – TECHNICAL DRAFTING – Grade 10
118
_____ 3. What is the purpose of an erasing shield?
A. to prevent tearing the drawing media
B. to avoid erasing nearby lines accidentally
C. to protect areas that you do not want to erase
D. all of the above are correct answers to the question
_____ 4. Which of the following is not an advantage of sketching?
A. refinement of ideas C. to communicate ideas
B. to practice drawing D. to capture ideas
_____ 5. An object is usually shown in more than one view in ____ drawing.
A. a rough sketch B. a multi-view C.an isometric D. an oblique
_____6. Concurrent engineering design involves ideation, implementation,
and __________.
A. aesthetics B. creativity C. life cycle D. refinement.
_____ 7. What are the three principal views of orthographic drawings?
A. Isometric, Perspective, Oblique C. CAD, ISO, ANSI
B. Top, Front, Side (end) D. Top, Bottom, Side
_____ 8. When using the TRIM command, which do you select first?
A. The cutting edges C. The object to be trimmed
B. Everything D. Nothing
_____ 10. How many snap points does an object have?
A. One C. Depends upon the object
B. Two D. At least four
_____ 11. How many points do you need to define for the rectangle
command?
A. One B. Two C. Four D. None
_____ 12. How many AutoCAD objects are in a rectangle?
A. None B. One C. Four D. Eight
_____ 13. If you draw a line at 270 degrees, where does it point to?
A. Up B. Down C. Left D. Right
_____ 14. How long will a line be when drawn from 1,4 to 4,4?
A. Four units C. Three Units
B. Eight Units D. None of the above
_____ 15. How long will line from 1,4 to @4<5 be?
A. Three units B. Four units C. Five units D. 6.4031 units
_____ 16. How many points do you need to draw a line using Absolute
Coordinates?
A. None B. One C. Two D. Four
ICT – TECHNICAL DRAFTING – Grade 10
119
_____ 17. When selecting objects, what is selected if you press L?
A. Select lines only
B. Select the last object created
C. Select objects when you move your mouse to the left
D. Select the last object you modified
_____ 18. What happen when you click Pressing Shift?
A. It allows you to draw a window
B. It removes the next selected object from the set
C. It automatically deletes the object(s)
D. It highlights the selected objects
_____ 19. What does pressing “F” do when selecting objects?
A. Allows you to draw a fence C. Finishes the selection set
B. Limits you to five objects D. Allows to find specific text
_____ 20. How do you select the last set of object(s) you selected?
A. Type 'L'
B. Type 'P'
C. Type 'H' to highlight them
D. Can’t be done
_____ 21. What is the best way of drawing a rectangle?
A. By using the Line command
B. By using the Rectangle command
C. By using the Polyline command
D. By using the Multiline command
_____ 22. If you move something four units to the right, what would be the
2nd point of displacement?
A. @4,0 B. @4<0 C. Neither 1 nor 2 D. Both 1 and 2
_____ 23. How would you select objects when using the stretch command?
A. With a crossing window C. Pick them one by one
B. Hold the shift key while selecting D. Type 'S'
_____ 24. At what point does a drawing start?
A. The first point you select C. A random point in space
B. 0,0 D.10,10
_____ 25. At what point are objects rotated?
A. Base point
B. Bottom right of the object
C. Centre of the object
D. Origin
ICT – TECHNICAL DRAFTING – Grade 10
120
Skills Assessment
Directions: Read the drafting skills carefully. Then write "No Knowledge," if
you are not very familiar, "A little," and "A lot," if you are familiar with the skills.
Write your answers in your notebook.
Skills in Drafting Structural Layout and
Details using Computer-Aided Design
No
Knowledge
A
Little
A
Lot
I can indicate the locations of wall footings,
footings and columns in drafting the floor plan.
I know how to draw in a larger scale details of
wall footings, footings and columns.
I know how to draft structural floor and roof
framing plans based on floor and foundation
plans using timber, concrete or steel
construction.
I know how to draft structural floor and roof
beams showing sizes, shapes and detailed
connections.
Learning Goals and Targets:
After having understood the introduction and carefully answered the
pre- assessment skills test, you may now have ideas of what you will be
dealing with in this module. Now prepare to set your goals and targets for this
module by completing the activity below. Write your answer in your notebook.
My goals are:
Goal 4
Goal 3
Goal 2
Goal 1
ICT – TECHNICAL DRAFTING – Grade 10
121
My targets are:
After knowing your learning goals and targets, are you ready to move on with
this module? This will include topics like: the preparation of drafts in foundation
plans and drafts in structural floors and roof framing plans using CAD. Enjoy and
have fun while performing the activities prepared for you.
Introduction
All structures are required to have a foundation. The foundation
provides a base to distribute the weight of the structure into the soil. The
weight, or load, must be evenly distributed over enough soil to prevent it from
compressing the soil. In addition to resist the load from gravity, the foundation
must resist floods, winds, and earthquakes. Where flooding is a problem, the
foundation system must be designed for the possibility that much of the
supporting soil may be washed away. The foundation must also be designed
to resist any debris that may be carried by floodwaters.
Symbols are used on floor plans to describe items that are associated
with living in the home, such as doors, windows, cabinets, and plumbing
fixtures. Other symbols are more closely related to the construction of the
home, such as electrical circuits and material sizes and spacing. One of the
most important concerns of the drafter is to carefully combine all of the
symbols, notes, and dimensions on the floor plan so the plan is uncluttered
and easily read.
Target 1
Target 2
Target 3
ICT – TECHNICAL DRAFTING – Grade 10
122
The design of the roof must be considered before the roof plan is
drawn. The designer will consider the basic shape of the roof as the floor plan
and elevations are drawn in the preliminary design stage. This does not mean
that the designer plans the entire structural system for the roof during the
initial stages, but the general shape and type of roofing material to be used
will be planned. Often the roof can present a larger visible surface area than
the walls.
In addition to aesthetic considerations, the roof can also be used to
provide rigidity in a structure when wall areas are filled with glass. To ensure
that the roof will meet the designer’s criteria, a roof plan is usually drawn by
the drafter to provide construction information. In order to draw the roof plan,
a drafter should understand types of roof plans, various pitches, common roof
shapes, and common roof materials.
Lesson 1: Drafting Foundation Plans
This lesson is designed to help you recognize the most appropriate
design, proper locations in doing such foundation plans (footing, wall footing,
and columns) and to familiarized you to the different materials needed in
making a house or building foundations.
Technical Terms Encountered in Drafting Foundation Plans
Foundation - is the part of the building below the surface of the ground which
is sometimes called the substructure.
Footing - is an expansion at the lower end of a wall, pier or column to
distribute the load into the ground.
External Reference - is a DWG, DWF, DWFx, raster image, DNG, or PDF
file incorporated into a drawing for reference only.
Layer Filters - are settings that screen out, or filter, layers you do not want to
display in the list view pane of the Layer Properties Manager.
ICT – TECHNICAL DRAFTING – Grade 10
123
Library Path – is the path AutoCAD that searches by default to find an xref
file, including the current folder and locations set in the Options dialog box.
Limit Dimensioning - is a method of dimensioning in which the upper and
lower limits are given, instead of the specified dimension and tolerance.
Limits - are the size of the virtual drawing area in model space. They are
largest and smallest numerical values a feature can have.
Linear Parameter - creates a measurement reference between two points.
Line Conventions - are standards related to line thickness, type, and
purpose.
Line Spacing - is the vertical distance from the bottom of one line of text to
the bottom of the next line.
Line type Scale - is the lengths of dashes and spaces in line types.
Truss - is the framework, typically consisting of rafters, posts, and struts,
supporting a roof, bridge, or other structure.
Mono Truss - is a truss has only one slope as opposed two (half of a
common truss).
Hip Truss - is a truss erected to sustain the angle-rafters of a hip-roof.
Beam - is a long, sturdy piece of squared timber or metal spanning an
opening or part of a building, usually to support the roof or floor above.
Joist - is a length of timber or steel supporting part of the structure of a
building, typically arranged in parallel series to support a floor or ceiling.
Lateral Bracing - refers to any piece (wood or metal) on a bridge that help
keep the top chord from bending horizontally.
Schedule Bracing - is a structural member, such as a beam or prop, used to
reinforced a framework, such a supporting beam in a building.
ICT – TECHNICAL DRAFTING – Grade 10
124
Using CAD to Draw Foundation Plans
The six steps used to draw a foundation plan manually are similar to
the steps used when drawing with AutoCAD. Below are the sequence in
coming up a Foundation Plan based on standard but you may also innovate
some techniques which are familiar with you
1. Firstly, plan your drawing. This includes planning where the drawing will
be created and stored, the needed layers, line types, and what loads will
need to be supported. Because you do not have the same kind of
accuracy problems when working with CAD as you have with manual
drafting, the CAD floor plan may be used as an accurate basis for
drawing the foundation plan.
2. Next display the floor plan, and then begin the foundation drawing directly
over the floor plan on another layer.
3. Draw the outer side of the stem walls using the OSNAP command.
4. Freeze all floor-related information once the outline of the floor plan has
been traced.
5. Use the OFFSET command to lay out the thickness of the stem walls and
footings. Corners can be adjusted by using the FILLET or TRIM
command.
6. Change the lines representing the footings using the CHANGE
PROPERTIES command. By following the step-by step instructions for a
particular foundation type, the plan can be completed.
7. Use the dimensions used on the floor or framing plan. Show the existing
dimensions so that they are displayed on the foundation drawing, or use
the COPY command to place the needed dimension in the drawing. Use
a layer such as BASE DIM for placing dimensions required by the floor
and foundation plans.
8. Place any dimensions that were not placed on previous plan views as
needed on the foundation plan. This will include the locations of openings
in the stem wall for any doors into the garage, foundation supports, and
braced wall anchor locations. Openings in the exterior envelope that will
be above a wood floor system do not need to be located on the
foundation plan.
ICT – TECHNICAL DRAFTING – Grade 10
125
9. Type general notes and store them as a WBLOCK to be reused on future
foundation plans. Many drafters also store lists of local notes required for
a particular type of foundation as a WBLOCK and insert them into a
drawing. Once inserted into the foundation plan, the notes can be moved
to the desired position.
10. Store the foundation plan when completed separately from the floor plan
to make plotting easier. Storing the foundation plan with the floor and
framing plan will save disk space, and proper use of layering can ease
plotting. All foundation walls, bearing footings, and support beams will be
in their correct locations.
Suggested Activity 1
Directions: Based on your acquired knowledge and skills in the preparation
of computer-aided drawings. Draft the following structural details below, by
selecting the appropriate CAD tools/commands.
ICT – TECHNICAL DRAFTING – Grade 10
126
Suggested Activity 2
Directions: Using CAD, select the appropriate tools/commands in creating
the typical column and footing details. As shown in the drawing below label
each details following the sequence for drawing structural plan using
AutoCAD.
Note: Consider the measurements according to the column and footing specified.
Layers and colors must conform to the standards.
ICT – TECHNICAL DRAFTING – Grade 10
127
Suggested Activity 3
Directions: Using CAD, draft and complete the foundation plan below by
using the appropriate tools/commands.
ICT – TECHNICAL DRAFTING – Grade 10
128
SUMMATIVE ASSESSMENT: Lesson 1
Directions. Using CAD, perform the following problems below using the
appropriate tools/commands.
1. Draw a foundation plan from a sample floor plan provided by your
teacher. Indicate complete dimensions, notations, and the required
standard specifications of a foundation plan.
2. Draw separate plans for wall footing, column, and footing details
you present in your foundation plan.
3. Use appropriate scale dimensions suitable to your drawings.
4. Refer to your floor plan to determine the dimensions and position of
load-bearing walls. Review your previous exercises and lecture
notes for your guidance to complete information.
5. After finishing your drawing, submit a printed output of your to your
instructor for evaluation.
Lesson 2: Drafting Structural Floor and Roof Framing Plans
Floor Plan - is the top cross-sectional view of the floor area of a house.
Floor Framing Plan - the plan that is drawn of the roof area used to show the
shape of the roof.
Roof Framing Plan – is the plan that is drawn of the roof area used to show
the shape of the roof.
ICT – TECHNICAL DRAFTING – Grade 10
129
Green roof – is a roof system consisting of some type of vegetation growing
in soil, planted over a waterproof membrane.
Cool roof – is a roof that features highly reflective materials. It can be
something as simple as finishing the roof by painting it with a coating of light-
colored water sealant.
Ridge – is the horizontal intersection between two or more roof planes and
represents the highest point of a roof.
Drafting Structural Floor Plans
The foundation plan shows not only the concrete footings and walls but
also the members that are used to form the floor system. Two common types
of floor systems are used in residential construction: floor systems built at
grade level and floor systems with a crawl space or basement below the floor
system. Both on-grade foundations and crawl space floor systems have their
own components and information that must be put on a foundation plan.
The final CAD drawing is printed, plotted, or published within a
selected sheet size at a specific scale. Most often, sheet size and drawing
scale are known standards, set according to drawing and office practices.
CAD offers significant flexibility when laying out a floor plan according to
sheet and scale requirements. Commands and options are available that
allow you to easily adjust the drawing to accommodate a specific sheet size
and drawing scale.
Traditional manual drafting setup tasks such as selecting drawing
orientation and identifying the working and drawing areas are not as critical
when using CAD. A CAD drawing can be rotated as needed to properly orient
the view on the sheet. If necessary, a north arrow symbol is inserted and
rotated to the exact north direction.
As with manual drafting, the working area of a CAD drawing is relative
to the sheet size. However, CAD allows you to select a different sheet size if
the plot does not fit within the working area.
Alternatively, if appropriate, you can easily modify the drawing scale to
fit the plot on the original sheet. Care in centering the drawing on the sheet is
not as important with CAD, because the drawing can be moved at any time.
Most CAD applications use a virtual drawing area that is infinite in size. This
ICT – TECHNICAL DRAFTING – Grade 10
130
allows you to draw a floor plan at actual size, or full scale, and then scale the
drawing to fit a specific sheet for plotting.
When using this system, you can focus on the floor plan layout, without
having to concentrate on scaling objects. CAD has transformed the traditional
process of setting up and laying out a drawing, by offering significant
flexibility. Still, effective layout planning and preparation is critical.
Determine the proper drawing orientation, sheet size, working area,
scale, and drawing area before you begin drawing to increase productivity
and limit costly and time-consuming mistakes.
Sequence for Drawing Structural Floor Plan in AutoCAD
Check off the features used with this floor plan drawing checklist and
drawing sequence in AutoCAD. Note that each of these items are not
required but rather guide in ensuring all the standard features of a floor plan is
observable.
 Exterior walls.
 Interior walls.
 Furring over concrete walls (if used).
 Masonry veneer (if used).
 Doors: Proper use of exterior doors; correct door
 Swing direction; clearance from walls, cabinets, and traffic.
 Door sizes or symbols for door schedule key.
 Windows: Proper symbols; clearance from walls, cabinets, and traffic.
 Window sizes or symbols for window schedule key.
 Skylights located and specified.
 Base cabinets.
ICT – TECHNICAL DRAFTING – Grade 10
131
 Upper cabinets.
 Closets and storage: Closets and wardrobes labelled and with shelf
and pole or additional shelves and drawers, storage closet, linen with
shelves, pantry with shelves, special storage features noted.
 Appliances: Cooktop/range, hood with vent or vent, oven, double
oven, microwave, refrigerator, lazy Susan, washer and dryer with vent,
trash compactor.
 Utilities: Furnace, air conditioner, water heater with platform and
straps.
Floor Framing Plans
Framing plans for each floor are drawn using the floor plan as a base.
The floor plan layers that contain the walls, windows, doors, cabinets, and
plumbing fixtures should be displayed, with all other floor information frozen.
With the proper material displayed, complete the framing plan in the same
order that was used with manual methods.
1. Layers can be added to contain materials for the framing plan. Each
new layer is given the prefix of UPPR FRAM, MAIN FRAM, or LOWR
FRAM to make it easy to identify required layers for plotting.
2. Sub-names for ANNO, DIMN, TRUSS, LATR, and BEAM layers must
also be added.
3. Complete the drawing by adding major framing members first, and
then working toward smaller members. Place beams that will be
required to support joists or trusses, and then place a marker to
represent each joist type. The joist markers can be stored as a block,
and then inserted and stretched to the needed size.
4. Lateral bracing information can be added to the drawing using blocks.
Schedules for one-level and multilevel construction bracing can be
created, and the appropriate schedule can be inserted into the
drawing.
ICT – TECHNICAL DRAFTING – Grade 10
132
5. Symbols to represent each type of bracing can also be created as
blocks and inserted into the required position throughout the drawing.
Because the upper level materials are different from the lower braces,
lateral symbols should be placed on layers that are level specific. This
allows the lower floor lateral information to be displayed on the
foundation plan without repeating the schedule. This requires the
creation of layers such as UPPR FRAM LAT SYMB, MAIN FRAM LAT
SYMB, or LOWR FRAM LAT SYMB.
6. Symbol information should be placed on a different layer than the
lateral schedule. With the framing and lateral information represented,
place dimensions to represent all walls, openings, and framing
materials.
7. Dimension layers should be divided by level; some dimensions such as
the overall and major jogs will be the same on all levels. This
information can be placed on a layer titled BASE DIMS.
8. Wall-to-wall, and wall-to-opening dimensions should be placed on a
layer that is specific to each level of the structure such as MAIN
FRAME EXT DIMS.
9. Annotation can now be placed to locate all framing materials.
10.Notes should also be placed on layers that are level-specific. Local
notes should be divided by layers to represent title block text and text
that is level-specific.
ICT – TECHNICAL DRAFTING – Grade 10
133
Suggested Activity 1
Directions: Below is a sample illustration of a typical floor slab detail. From
your finished foundation plan, draft a floor slab detail, use the given slab
schedule using the appropriate CAD tools/commands.
Drafting Roof Framing Plans
The roof framing plan can be created using the roof or floor plan as a
base drawing. Upper and lower framing plans are created using the floor
plans for the starting points. Two major methods are available to create these
drawings. Information can be added to the base drawings and controlled by
layers, or information can be added to a separate drawing and referenced to
the original. If the roof plan is to be controlled by layers, it is important to
remember that the base floor plan is plotted at a scale of 1/4" = 1'−0" and the
roof framing plan is usually plotted at a much smaller scale. Because you are
ICT – TECHNICAL DRAFTING – Grade 10
134
drawing in model space, you are working at full size, but you will need to
adjust the line scale and the text scale factors for the appropriate scale on the
roof framing plan.
One alternative in creating a roof plan is to place the needed roofing
materials using the floor plan as a base. This method can be especially
helpful on a complicated stick-frame roof. If the floor plan is used as a base
for a roof framing plan, show all of the walls printed in matted lines using
grayscale, and show all roofing materials using black lines.
Layer Method of Drafting Roof Framing Plans
1. Once the layout method is selected, add layers to contain materials
for the roof plan. For this example, the drawing will be controlled
using layers within the base drawing.
2. Give each new layer the prefix of ROOF FRAM to make it easy to
identify required layers for plotting.
3. Add sub-names for ANNO, DIMS, TRUSS, and BEAM. Complete
the drawing by working from the roof down to the foundation, and
by adding major framing members first, and then working toward
smaller members.
4. Draw standard trusses first in the center section of the roof, and
then the hip trusses are represented.
5. Finally, draw trusses are drawn at each edge. With all materials
represented, dimensions should be placed to locate material
limitations, beam locations, and overhang sizes.
6. Provide notation to specify each material and framing member size
that has been represented.
Drafting Roof Framing Plans using CAD
A roof framing plan can be drawn using a CAD program following
procedures similar to those used for a manual drawing. The drawing can be
created in the file containing the floor plan.
1. Start by freezing all floor plan material except the exterior walls,
furniture, and skylights.
2. Create layers to contain the roof plan using the ROOF prefix. Layer
names such as ROOF WALL, ROOF LINE, ROOF OUTL, ROOF
ANNO, ROOF DIMN, or layer names based on the NCS should be
ICT – TECHNICAL DRAFTING – Grade 10
135
used to keep the roof information separate from the floor plan
information and to ease plotting.
3. Draw the outline of the residence on the ROOF WALL layer by tracing
the outline of the walls on the floor plan, and then freeze the walls of
the floor plan.
4. Complete the plan using the appropriate step-by-step process for the
required roof type. Using the OFFSET command, the lines that
represent the walls can be placed to represent the roof outline.
5. Use the PROPERTIES command to assign the lines to the appropriate
layer, and to assign the required line weight and line type.
6. When the roof plan is completed, a copy can be saved as a BLOCK
with a title ROOF.
Suggested Activity 2
Directions: Select the appropriate CAD tools/commands in drafting the
structural roof framing plan of the given floor plan below. Layout your
proposal and have it approved by your teacher before you start drawing.
ICT – TECHNICAL DRAFTING – Grade 10
136
Suggested Activity 3
Directions: Using CAD, draft the given truss connection details below.
Suggested Activity 4
Directions: Based on the given sample roof framing plan below, perform the
following:
1. Draft the structural components of the given roof framing
plan.
2. Establish line scales and line weights fit for plotting at 1/8”
= 1’-0”.
3. Use an architectural font for all text.
ICT – TECHNICAL DRAFTING – Grade 10
137
Sample Roof Framing Plan
Summative Assessment: Lesson 2
Directions: Using CAD, select the appropriate tools/commands in drafting
the structural roof framing plan and the detailed connections appropriate to
the given roof framing plan below.
ICT – TECHNICAL DRAFTING – Grade 10
138
ICT – TECHNICAL DRAFTING – Grade 10
139
Post-Assessment:
Answer the post assessment test below to determine whether there is
significant increase in your understanding of Drafting Structural Layout and
Details using Computer-Aided Design (CAD).
Directions: Choose the letter of the correct answer. Write your answer in
the space provided for each number.
_____ 1. Which circle is drawn with a bow compass?
A. 360° circle C. irregular curve
B. circle template D. flexible curve
_____ 2. Where do you set your compass to draw a 21/2 diameter-circle?
A. 1.25” B. 1.50” C. 2.00” D. 2.50”
_____ 3. What is the purpose of an erasing shield?
A. to prevent tearing the drawing media
B. to avoid erasing nearby lines accidentally
C. to protect areas that you do not want to erase
D. all of the above are correct answers to the question
_____ 4. Which of the following is not an advantage of sketching?
A. refinement of ideas C. to communicate ideas
B. to practice drawing D. to capture ideas
_____ 5. An object is usually shown in more than one view in ____ drawing.
A. a rough sketch B. a multi-view C.an isometric D. an oblique
_____6. Concurrent engineering design involves ideation, implementation,
and __________.
A. aesthetics B. creativity C. life cycle D. refinement.
_____ 7. What are the three principal views of orthographic drawings?
A. Isometric, Perspective, Oblique C. CAD, ISO, ANSI
B. Top, Front, Side (end) D. Top, Bottom, Side
_____ 8. When using the TRIM command, which do you select first?
C. The cutting edges C. The object to be trimmed
D. Everything D. Nothing
_____ 10. How many snap points does an object have?
C. One C. Depends upon the object
D. Two D. At least four
_____ 11. How many points do you need to define for the rectangle
command?
A. One B. Two C. Four D. None
ICT – TECHNICAL DRAFTING – Grade 10
140
_____ 12. How many AutoCAD objects are in a rectangle?
A. None B. One C. Four D. Eight
_____ 13. If you draw a line at 270 degrees, where does it point to?
A. Up B. Down C. Left D. Right
_____ 14. How long will a line be when drawn from 1,4 to 4,4?
A. Four units C. Three Units
B. Eight Units D. None of the above
_____ 15. How long will line from 1,4 to @4<5 be?
A. Three units B. Four units C. Five units D. 6.4031 units
_____ 16. How many points do you need to draw a line using Absolute
Coordinates?
A. None B. One C. Two D. Four
_____ 17. When selecting objects, what is selected if you press L?
A. Select lines only
B. Select the last object created
C. Select objects when you move your mouse to the left
D. Select the last object you modified
_____ 18. What happen when you click Pressing Shift?
A. It allows you to draw a window
B. It removes the next selected object from the set
C. It automatically deletes the object(s)
D. It highlights the selected objects
_____ 19. What does pressing “F” do when selecting objects?
A. Allows you to draw a fence C. Finishes the selection set
B. Limits you to five objects D. Allows to find specific text
_____ 20. How do you select the last set of object(s) you selected?
A. Type 'L'
B. Type 'P'
C. Type 'H' to highlight them
D. Can’t be done
_____ 21. What is the best way of drawing a rectangle?
A. By using the Line command
B. By using the Rectangle command
C. By using the Polyline command
D. By using the Multiline command
_____ 22. If you move something four units to the right, what would be the
2nd point of displacement?
A. @4,0 B. @4<0 C. Neither 1 nor 2 D. Both 1 and 2
ICT – TECHNICAL DRAFTING – Grade 10
141
_____ 23. How would you select objects when using the stretch command?
A. With a crossing window C. Pick them one by one
B. Hold the shift key while selecting D. Type 'S'
_____ 24. At what point does a drawing start?
A. The first point you select C. A random point in space
B. 0,0 D.10,10
_____ 25. At what point are objects rotated?
A. Base point
B. Bottom right of the object
C. Centre of the object
D. Origin
ICT – TECHNICAL DRAFTING – Grade 10
142
Appendix A.
Assessment Tool: Performance Rubrics
Name: __________________________________ Date: __________
Year & Section: _______________
Criteria 5 points 3 points 1 point
Proficiency Perform the task
with competence
and exceptional
performance
Perform the task
with competence
and with standard
performance
Perform the task
with competence
but below
standard
performance
Method Followed the
given procedure
from start to
finish, observed
correct usage of
command tools
Followed the
given procedure,
noted once
incorrect usage
of command tools
Followed the
given procedure,
noted more than
once incorrect
usage of
command tools.
Accuracy Perform the task
with no error
Perform the task
with at least 1-2
errors
Perform the task
with more than 2
errors
Time
Management
Finish the work
on/before the
given time
Finish the work
after the given
time
Unable to finish
the work
Rating Scale:
Points Earned Numerical Rating Descriptive Rating
17 – 20 91 – 100 Outstanding
13 – 16 86 – 90 Very Good
9 – 12 81 – 85 Good
5 – 8 76 – 80 Fair
1 - 4 71 – 75 Needs Improvement
Teacher’s Comments:
Teacher’s Signature: _____________ Date: _____________
Note: This assessment tool can also be used in the evaluation of the
following suggested activities:
A. Suggested Activity 2 (Transfer), page 100
B. Summative Assessment Lesson 1, page 101
ICT – TECHNICAL DRAFTING – Grade 10
143
C. Suggested Activity 1 (Process), page 104
D. Suggested Activity 1 (Process), page 107
E. Suggested Activity 2 (Transfer), page 108
F. Suggested Activity 1 (Process), page 110
G. Summative Assessment: Lesson 2, page 112
Appendix B
Assessment Tool: Performance Rubrics
Name: _____________________________________Date: __________
Year & Section: _______________
Criteria 5 points 3 points 1 point
Line Technique Application of
(all) various lines
was used
according to
standards
At least 3-5 lines
were used not
according to
standards
More than 5 lines
were used not
according to
standards
Accuracy All
measurements
and notations
needed were
accurately done
At least 3-5
measurements
and notations
needed were
inaccurately
done
More than 5
measurements
and notations
needed were
inaccurately done
Layout/Proportion All drawings
were drawn
proportionately
and was layout
properly
Layout was good
but 1-2 drawing
were out of
proportion
More than 2
drawings were
drawn out of
proportion and
improperly layout
Time
Management
Finish the task
ahead of the
given time/date
Finish the task
on the given
time/date
Unable to finish
the task on the
given time/date
RATING SCALE:
Points Earned Numerical Rating Descriptive Rating
17 - 20 91-100 Outstanding
13 - 16 86 - 90 Very Good
9 - 12 81 - 85 Good
5 - 8 76 - 80 Fair
1 - 4 71 - 75 Needs Improvement

More Related Content

PDF
Drafting technology y3
PDF
Technical Drafting Module 3
PDF
Technical Drafting Module 5
PDF
K-12 Technical Drafting Learning Module
PDF
LEARNING MATERIALS GRADE 7 TO 8
PPTX
alphabet of lines
DOCX
Module 4 module 2 structural layout & details
PPTX
technical drafting.pptx
Drafting technology y3
Technical Drafting Module 3
Technical Drafting Module 5
K-12 Technical Drafting Learning Module
LEARNING MATERIALS GRADE 7 TO 8
alphabet of lines
Module 4 module 2 structural layout & details
technical drafting.pptx

What's hot (20)

PDF
TLE - Mechanical Drafting (Learning Module)
PDF
TLE 8 - TECHNICAL DRAFTING (INTERPRET TECHNICAL DRAWINGS AND PLANS)
DOC
Technical Drafting Learning Module v.2.0
PDF
Technical Drafting Module 7
PDF
K to 12 Mechanical Drafting Learning Module
PPTX
Evaluating and controlling hazards and risks
PPTX
Lesson 6_Prepare and Interpret Technical Drawing (LO1)
PPT
TLE 9 (Technical Drafting) - Layout Drawing
PDF
K to 12 Carpentry Learning Modules
PDF
TLE 8 - TECHNICAL DRAFTING (ANALYZE SIGNS, SYMBOLS AND DATA)
PDF
TLE 7-8 ICT-CSS Q1_M3 for printing.pdf
PDF
K-12 Module in TLE - ICT Grade 9 [All Gradings]
PDF
K to 12 TLE Curriculum Guide for Commercial Cooking
PDF
ICT Technical Drafting 10 Learning Material
PDF
TLE 8 - TECHNICAL DRAFTING (HAZARD AND RISK)
PPTX
Personal Entrepreneurial Competencies
PPTX
BASIC DRAFTING
PDF
K to 12 dressmaking and tailoring learning modules
DOC
Y1-Module-3-Constructing-orthographic-projection (1).doc
PPTX
Performing mensuration and calculation
TLE - Mechanical Drafting (Learning Module)
TLE 8 - TECHNICAL DRAFTING (INTERPRET TECHNICAL DRAWINGS AND PLANS)
Technical Drafting Learning Module v.2.0
Technical Drafting Module 7
K to 12 Mechanical Drafting Learning Module
Evaluating and controlling hazards and risks
Lesson 6_Prepare and Interpret Technical Drawing (LO1)
TLE 9 (Technical Drafting) - Layout Drawing
K to 12 Carpentry Learning Modules
TLE 8 - TECHNICAL DRAFTING (ANALYZE SIGNS, SYMBOLS AND DATA)
TLE 7-8 ICT-CSS Q1_M3 for printing.pdf
K-12 Module in TLE - ICT Grade 9 [All Gradings]
K to 12 TLE Curriculum Guide for Commercial Cooking
ICT Technical Drafting 10 Learning Material
TLE 8 - TECHNICAL DRAFTING (HAZARD AND RISK)
Personal Entrepreneurial Competencies
BASIC DRAFTING
K to 12 dressmaking and tailoring learning modules
Y1-Module-3-Constructing-orthographic-projection (1).doc
Performing mensuration and calculation
Ad

Viewers also liked (19)

PPTX
Presentation civil engineering (fm)
PDF
K to 12 mechanical drafting learning module
DOCX
Module 7 module 5 draft mechanical layout and details
PDF
K to 12 mechanical drafting learning module
PPTX
Reading floor plans
DOCX
Module 5 module 3 draft electrical and electronic layout and details
PDF
Technical Drafting Table of Contents
PDF
Final ict technical drafting grade 7 10
PPTX
Technical drawing (by: Sherief Elmetwali)
PDF
LM Technical Drafting (NCII) K12
PDF
Technical Drafting Module 6
PPT
Technical drawing I
PDF
Importance of technical drawing
PPT
Technical Drawing
DOC
TECHNICAL DRAWING
DOCX
Module 3 module 1 architecural layout & details
PPTX
The language of technical drawing
PPTX
Architecture drawing presentation
PDF
Plan symbols
Presentation civil engineering (fm)
K to 12 mechanical drafting learning module
Module 7 module 5 draft mechanical layout and details
K to 12 mechanical drafting learning module
Reading floor plans
Module 5 module 3 draft electrical and electronic layout and details
Technical Drafting Table of Contents
Final ict technical drafting grade 7 10
Technical drawing (by: Sherief Elmetwali)
LM Technical Drafting (NCII) K12
Technical Drafting Module 6
Technical drawing I
Importance of technical drawing
Technical Drawing
TECHNICAL DRAWING
Module 3 module 1 architecural layout & details
The language of technical drawing
Architecture drawing presentation
Plan symbols
Ad

Similar to Technical Drafting Module 4 (20)

PPTX
Foundation.pptx
PDF
Basics of CAD software for oil and gas engineers.pdf
DOCX
Module 4 module 2 structural layout & details
PDF
15057 ca dcomputer
PDF
Robot Modelling and Assembling Day 2
PDF
CAD Lecture Note PPT-ETU.pdf for any engineers
DOCX
Module 3 module 1 architecural layout & details
PPT
introductio to thirdmechani year mechsnixa.ppt
PPT
1585848522Basic_Introduction_to_AUTOCAD.ppt
PPT
Introduction_to_AUTOCAD
PPT
1585848522Basic_Introduction_to_AUTOCAD.ppt
PPT
Introduction_to_AUTOCAD.ppt
PPTX
ARS Portfolio
PDF
K to 12_entrep-based_technical_drafting_learning_module
PPT
1585848522Basic_Introduction_to_AUTOCAD.ppt
PPT
1585848522Basic_Introduction_to_AUTOCAD.ppt
PPT
1585848522Basic_Introduction_to_AUTOCAD.ppt
PPT
1585848522Basic_Introduction_to_AUTOCAD.ppt
PPT
1585848522Basic_Introduction_to_AUTOCAD.ppt
PDF
RCB_16T3_AB2_ID063_AADIL
Foundation.pptx
Basics of CAD software for oil and gas engineers.pdf
Module 4 module 2 structural layout & details
15057 ca dcomputer
Robot Modelling and Assembling Day 2
CAD Lecture Note PPT-ETU.pdf for any engineers
Module 3 module 1 architecural layout & details
introductio to thirdmechani year mechsnixa.ppt
1585848522Basic_Introduction_to_AUTOCAD.ppt
Introduction_to_AUTOCAD
1585848522Basic_Introduction_to_AUTOCAD.ppt
Introduction_to_AUTOCAD.ppt
ARS Portfolio
K to 12_entrep-based_technical_drafting_learning_module
1585848522Basic_Introduction_to_AUTOCAD.ppt
1585848522Basic_Introduction_to_AUTOCAD.ppt
1585848522Basic_Introduction_to_AUTOCAD.ppt
1585848522Basic_Introduction_to_AUTOCAD.ppt
1585848522Basic_Introduction_to_AUTOCAD.ppt
RCB_16T3_AB2_ID063_AADIL

Recently uploaded (20)

PDF
RMMM.pdf make it easy to upload and study
PPTX
Lesson notes of climatology university.
PDF
Saundersa Comprehensive Review for the NCLEX-RN Examination.pdf
PPTX
Final Presentation General Medicine 03-08-2024.pptx
PPTX
Pharma ospi slides which help in ospi learning
PDF
Chapter 2 Heredity, Prenatal Development, and Birth.pdf
PDF
Insiders guide to clinical Medicine.pdf
PDF
Basic Mud Logging Guide for educational purpose
PPTX
school management -TNTEU- B.Ed., Semester II Unit 1.pptx
PDF
Supply Chain Operations Speaking Notes -ICLT Program
PPTX
human mycosis Human fungal infections are called human mycosis..pptx
PPTX
Cell Structure & Organelles in detailed.
PDF
Classroom Observation Tools for Teachers
PDF
Sports Quiz easy sports quiz sports quiz
PDF
The Lost Whites of Pakistan by Jahanzaib Mughal.pdf
PPTX
PPT- ENG7_QUARTER1_LESSON1_WEEK1. IMAGERY -DESCRIPTIONS pptx.pptx
PDF
Physiotherapy_for_Respiratory_and_Cardiac_Problems WEBBER.pdf
PPTX
Introduction_to_Human_Anatomy_and_Physiology_for_B.Pharm.pptx
PPTX
PPH.pptx obstetrics and gynecology in nursing
PPTX
Pharmacology of Heart Failure /Pharmacotherapy of CHF
RMMM.pdf make it easy to upload and study
Lesson notes of climatology university.
Saundersa Comprehensive Review for the NCLEX-RN Examination.pdf
Final Presentation General Medicine 03-08-2024.pptx
Pharma ospi slides which help in ospi learning
Chapter 2 Heredity, Prenatal Development, and Birth.pdf
Insiders guide to clinical Medicine.pdf
Basic Mud Logging Guide for educational purpose
school management -TNTEU- B.Ed., Semester II Unit 1.pptx
Supply Chain Operations Speaking Notes -ICLT Program
human mycosis Human fungal infections are called human mycosis..pptx
Cell Structure & Organelles in detailed.
Classroom Observation Tools for Teachers
Sports Quiz easy sports quiz sports quiz
The Lost Whites of Pakistan by Jahanzaib Mughal.pdf
PPT- ENG7_QUARTER1_LESSON1_WEEK1. IMAGERY -DESCRIPTIONS pptx.pptx
Physiotherapy_for_Respiratory_and_Cardiac_Problems WEBBER.pdf
Introduction_to_Human_Anatomy_and_Physiology_for_B.Pharm.pptx
PPH.pptx obstetrics and gynecology in nursing
Pharmacology of Heart Failure /Pharmacotherapy of CHF

Technical Drafting Module 4

  • 1. ICT – TECHNICAL DRAFTING – Grade 10 116 Content Standard Performance Standard The learner demonstrates understanding of concepts and underlying principles in drafting structural layout and details using Computer-Aided Design (CAD). The learner independently drafts structural layout and details following the job requirements using Computer- Aided Design (CAD). Quarter III Time Allotment: 12 hrs. MODULE 4 DRAFTING STRUCTURAL LAYOUT AND DETAILS USING COMPUTER-AIDED DESIGN (CAD) Introduction Technology and Livelihood Education (TLE) is one of the nomenclature in the implementation of the K to 12 Basic Education Program (BEP) composed of four components namely: Agri-Fishery Arts, Home Economics, Industrial Arts and Information and Communication Technology (ICT). In this module, the focus is on Drafting Structural Layout and Details using CAD. In this course, you will be introduced to different learning activities that will prepare you to be skillful before you to do the actual work as a draftsman and to be more confident to start your own CAD business. This module is specifically designed to hone your knowledge and skills specifically on Process and Delivery where you have a hands-on activities as you go along. The learning procedures are divided into different sections such as: What to Know, What to Process, What to Reflect and Understand, and What to Transfer. So, explore and experience the lessons in Structural Layout and Details using CAD and be a step closer to being a skillful draftsman.
  • 2. ICT – TECHNICAL DRAFTING – Grade 10 117 ENJOY YOUR JOURNEY! Objectives: Upon completion of this module, you are expected to:  draft foundation plans  draft structural floors and roof framing plans ***** Pre-Assessment: You will be challenged to recall your prior knowledge and experiences about drafting structural layout and details. This Phase will guide you in assessing yourself by answering the questions below. It will also give you the opportunity to explore the basics of drafting structural layout and details using CAD. Directions: Choose the letter of the correct answer. Write your answer in the space provided to each number. _____ 1. Which circle is drawn with a bow compass? A. 360° circle C. irregular curve B. circle template D. flexible curve _____ 2. Where do you set your compass to draw a 21/2 diameter-circle? A. 1.25” B. 1.50” C. 2.00” D. 2.50”
  • 3. ICT – TECHNICAL DRAFTING – Grade 10 118 _____ 3. What is the purpose of an erasing shield? A. to prevent tearing the drawing media B. to avoid erasing nearby lines accidentally C. to protect areas that you do not want to erase D. all of the above are correct answers to the question _____ 4. Which of the following is not an advantage of sketching? A. refinement of ideas C. to communicate ideas B. to practice drawing D. to capture ideas _____ 5. An object is usually shown in more than one view in ____ drawing. A. a rough sketch B. a multi-view C.an isometric D. an oblique _____6. Concurrent engineering design involves ideation, implementation, and __________. A. aesthetics B. creativity C. life cycle D. refinement. _____ 7. What are the three principal views of orthographic drawings? A. Isometric, Perspective, Oblique C. CAD, ISO, ANSI B. Top, Front, Side (end) D. Top, Bottom, Side _____ 8. When using the TRIM command, which do you select first? A. The cutting edges C. The object to be trimmed B. Everything D. Nothing _____ 10. How many snap points does an object have? A. One C. Depends upon the object B. Two D. At least four _____ 11. How many points do you need to define for the rectangle command? A. One B. Two C. Four D. None _____ 12. How many AutoCAD objects are in a rectangle? A. None B. One C. Four D. Eight _____ 13. If you draw a line at 270 degrees, where does it point to? A. Up B. Down C. Left D. Right _____ 14. How long will a line be when drawn from 1,4 to 4,4? A. Four units C. Three Units B. Eight Units D. None of the above _____ 15. How long will line from 1,4 to @4<5 be? A. Three units B. Four units C. Five units D. 6.4031 units _____ 16. How many points do you need to draw a line using Absolute Coordinates? A. None B. One C. Two D. Four
  • 4. ICT – TECHNICAL DRAFTING – Grade 10 119 _____ 17. When selecting objects, what is selected if you press L? A. Select lines only B. Select the last object created C. Select objects when you move your mouse to the left D. Select the last object you modified _____ 18. What happen when you click Pressing Shift? A. It allows you to draw a window B. It removes the next selected object from the set C. It automatically deletes the object(s) D. It highlights the selected objects _____ 19. What does pressing “F” do when selecting objects? A. Allows you to draw a fence C. Finishes the selection set B. Limits you to five objects D. Allows to find specific text _____ 20. How do you select the last set of object(s) you selected? A. Type 'L' B. Type 'P' C. Type 'H' to highlight them D. Can’t be done _____ 21. What is the best way of drawing a rectangle? A. By using the Line command B. By using the Rectangle command C. By using the Polyline command D. By using the Multiline command _____ 22. If you move something four units to the right, what would be the 2nd point of displacement? A. @4,0 B. @4<0 C. Neither 1 nor 2 D. Both 1 and 2 _____ 23. How would you select objects when using the stretch command? A. With a crossing window C. Pick them one by one B. Hold the shift key while selecting D. Type 'S' _____ 24. At what point does a drawing start? A. The first point you select C. A random point in space B. 0,0 D.10,10 _____ 25. At what point are objects rotated? A. Base point B. Bottom right of the object C. Centre of the object D. Origin
  • 5. ICT – TECHNICAL DRAFTING – Grade 10 120 Skills Assessment Directions: Read the drafting skills carefully. Then write "No Knowledge," if you are not very familiar, "A little," and "A lot," if you are familiar with the skills. Write your answers in your notebook. Skills in Drafting Structural Layout and Details using Computer-Aided Design No Knowledge A Little A Lot I can indicate the locations of wall footings, footings and columns in drafting the floor plan. I know how to draw in a larger scale details of wall footings, footings and columns. I know how to draft structural floor and roof framing plans based on floor and foundation plans using timber, concrete or steel construction. I know how to draft structural floor and roof beams showing sizes, shapes and detailed connections. Learning Goals and Targets: After having understood the introduction and carefully answered the pre- assessment skills test, you may now have ideas of what you will be dealing with in this module. Now prepare to set your goals and targets for this module by completing the activity below. Write your answer in your notebook. My goals are: Goal 4 Goal 3 Goal 2 Goal 1
  • 6. ICT – TECHNICAL DRAFTING – Grade 10 121 My targets are: After knowing your learning goals and targets, are you ready to move on with this module? This will include topics like: the preparation of drafts in foundation plans and drafts in structural floors and roof framing plans using CAD. Enjoy and have fun while performing the activities prepared for you. Introduction All structures are required to have a foundation. The foundation provides a base to distribute the weight of the structure into the soil. The weight, or load, must be evenly distributed over enough soil to prevent it from compressing the soil. In addition to resist the load from gravity, the foundation must resist floods, winds, and earthquakes. Where flooding is a problem, the foundation system must be designed for the possibility that much of the supporting soil may be washed away. The foundation must also be designed to resist any debris that may be carried by floodwaters. Symbols are used on floor plans to describe items that are associated with living in the home, such as doors, windows, cabinets, and plumbing fixtures. Other symbols are more closely related to the construction of the home, such as electrical circuits and material sizes and spacing. One of the most important concerns of the drafter is to carefully combine all of the symbols, notes, and dimensions on the floor plan so the plan is uncluttered and easily read. Target 1 Target 2 Target 3
  • 7. ICT – TECHNICAL DRAFTING – Grade 10 122 The design of the roof must be considered before the roof plan is drawn. The designer will consider the basic shape of the roof as the floor plan and elevations are drawn in the preliminary design stage. This does not mean that the designer plans the entire structural system for the roof during the initial stages, but the general shape and type of roofing material to be used will be planned. Often the roof can present a larger visible surface area than the walls. In addition to aesthetic considerations, the roof can also be used to provide rigidity in a structure when wall areas are filled with glass. To ensure that the roof will meet the designer’s criteria, a roof plan is usually drawn by the drafter to provide construction information. In order to draw the roof plan, a drafter should understand types of roof plans, various pitches, common roof shapes, and common roof materials. Lesson 1: Drafting Foundation Plans This lesson is designed to help you recognize the most appropriate design, proper locations in doing such foundation plans (footing, wall footing, and columns) and to familiarized you to the different materials needed in making a house or building foundations. Technical Terms Encountered in Drafting Foundation Plans Foundation - is the part of the building below the surface of the ground which is sometimes called the substructure. Footing - is an expansion at the lower end of a wall, pier or column to distribute the load into the ground. External Reference - is a DWG, DWF, DWFx, raster image, DNG, or PDF file incorporated into a drawing for reference only. Layer Filters - are settings that screen out, or filter, layers you do not want to display in the list view pane of the Layer Properties Manager.
  • 8. ICT – TECHNICAL DRAFTING – Grade 10 123 Library Path – is the path AutoCAD that searches by default to find an xref file, including the current folder and locations set in the Options dialog box. Limit Dimensioning - is a method of dimensioning in which the upper and lower limits are given, instead of the specified dimension and tolerance. Limits - are the size of the virtual drawing area in model space. They are largest and smallest numerical values a feature can have. Linear Parameter - creates a measurement reference between two points. Line Conventions - are standards related to line thickness, type, and purpose. Line Spacing - is the vertical distance from the bottom of one line of text to the bottom of the next line. Line type Scale - is the lengths of dashes and spaces in line types. Truss - is the framework, typically consisting of rafters, posts, and struts, supporting a roof, bridge, or other structure. Mono Truss - is a truss has only one slope as opposed two (half of a common truss). Hip Truss - is a truss erected to sustain the angle-rafters of a hip-roof. Beam - is a long, sturdy piece of squared timber or metal spanning an opening or part of a building, usually to support the roof or floor above. Joist - is a length of timber or steel supporting part of the structure of a building, typically arranged in parallel series to support a floor or ceiling. Lateral Bracing - refers to any piece (wood or metal) on a bridge that help keep the top chord from bending horizontally. Schedule Bracing - is a structural member, such as a beam or prop, used to reinforced a framework, such a supporting beam in a building.
  • 9. ICT – TECHNICAL DRAFTING – Grade 10 124 Using CAD to Draw Foundation Plans The six steps used to draw a foundation plan manually are similar to the steps used when drawing with AutoCAD. Below are the sequence in coming up a Foundation Plan based on standard but you may also innovate some techniques which are familiar with you 1. Firstly, plan your drawing. This includes planning where the drawing will be created and stored, the needed layers, line types, and what loads will need to be supported. Because you do not have the same kind of accuracy problems when working with CAD as you have with manual drafting, the CAD floor plan may be used as an accurate basis for drawing the foundation plan. 2. Next display the floor plan, and then begin the foundation drawing directly over the floor plan on another layer. 3. Draw the outer side of the stem walls using the OSNAP command. 4. Freeze all floor-related information once the outline of the floor plan has been traced. 5. Use the OFFSET command to lay out the thickness of the stem walls and footings. Corners can be adjusted by using the FILLET or TRIM command. 6. Change the lines representing the footings using the CHANGE PROPERTIES command. By following the step-by step instructions for a particular foundation type, the plan can be completed. 7. Use the dimensions used on the floor or framing plan. Show the existing dimensions so that they are displayed on the foundation drawing, or use the COPY command to place the needed dimension in the drawing. Use a layer such as BASE DIM for placing dimensions required by the floor and foundation plans. 8. Place any dimensions that were not placed on previous plan views as needed on the foundation plan. This will include the locations of openings in the stem wall for any doors into the garage, foundation supports, and braced wall anchor locations. Openings in the exterior envelope that will be above a wood floor system do not need to be located on the foundation plan.
  • 10. ICT – TECHNICAL DRAFTING – Grade 10 125 9. Type general notes and store them as a WBLOCK to be reused on future foundation plans. Many drafters also store lists of local notes required for a particular type of foundation as a WBLOCK and insert them into a drawing. Once inserted into the foundation plan, the notes can be moved to the desired position. 10. Store the foundation plan when completed separately from the floor plan to make plotting easier. Storing the foundation plan with the floor and framing plan will save disk space, and proper use of layering can ease plotting. All foundation walls, bearing footings, and support beams will be in their correct locations. Suggested Activity 1 Directions: Based on your acquired knowledge and skills in the preparation of computer-aided drawings. Draft the following structural details below, by selecting the appropriate CAD tools/commands.
  • 11. ICT – TECHNICAL DRAFTING – Grade 10 126 Suggested Activity 2 Directions: Using CAD, select the appropriate tools/commands in creating the typical column and footing details. As shown in the drawing below label each details following the sequence for drawing structural plan using AutoCAD. Note: Consider the measurements according to the column and footing specified. Layers and colors must conform to the standards.
  • 12. ICT – TECHNICAL DRAFTING – Grade 10 127 Suggested Activity 3 Directions: Using CAD, draft and complete the foundation plan below by using the appropriate tools/commands.
  • 13. ICT – TECHNICAL DRAFTING – Grade 10 128 SUMMATIVE ASSESSMENT: Lesson 1 Directions. Using CAD, perform the following problems below using the appropriate tools/commands. 1. Draw a foundation plan from a sample floor plan provided by your teacher. Indicate complete dimensions, notations, and the required standard specifications of a foundation plan. 2. Draw separate plans for wall footing, column, and footing details you present in your foundation plan. 3. Use appropriate scale dimensions suitable to your drawings. 4. Refer to your floor plan to determine the dimensions and position of load-bearing walls. Review your previous exercises and lecture notes for your guidance to complete information. 5. After finishing your drawing, submit a printed output of your to your instructor for evaluation. Lesson 2: Drafting Structural Floor and Roof Framing Plans Floor Plan - is the top cross-sectional view of the floor area of a house. Floor Framing Plan - the plan that is drawn of the roof area used to show the shape of the roof. Roof Framing Plan – is the plan that is drawn of the roof area used to show the shape of the roof.
  • 14. ICT – TECHNICAL DRAFTING – Grade 10 129 Green roof – is a roof system consisting of some type of vegetation growing in soil, planted over a waterproof membrane. Cool roof – is a roof that features highly reflective materials. It can be something as simple as finishing the roof by painting it with a coating of light- colored water sealant. Ridge – is the horizontal intersection between two or more roof planes and represents the highest point of a roof. Drafting Structural Floor Plans The foundation plan shows not only the concrete footings and walls but also the members that are used to form the floor system. Two common types of floor systems are used in residential construction: floor systems built at grade level and floor systems with a crawl space or basement below the floor system. Both on-grade foundations and crawl space floor systems have their own components and information that must be put on a foundation plan. The final CAD drawing is printed, plotted, or published within a selected sheet size at a specific scale. Most often, sheet size and drawing scale are known standards, set according to drawing and office practices. CAD offers significant flexibility when laying out a floor plan according to sheet and scale requirements. Commands and options are available that allow you to easily adjust the drawing to accommodate a specific sheet size and drawing scale. Traditional manual drafting setup tasks such as selecting drawing orientation and identifying the working and drawing areas are not as critical when using CAD. A CAD drawing can be rotated as needed to properly orient the view on the sheet. If necessary, a north arrow symbol is inserted and rotated to the exact north direction. As with manual drafting, the working area of a CAD drawing is relative to the sheet size. However, CAD allows you to select a different sheet size if the plot does not fit within the working area. Alternatively, if appropriate, you can easily modify the drawing scale to fit the plot on the original sheet. Care in centering the drawing on the sheet is not as important with CAD, because the drawing can be moved at any time. Most CAD applications use a virtual drawing area that is infinite in size. This
  • 15. ICT – TECHNICAL DRAFTING – Grade 10 130 allows you to draw a floor plan at actual size, or full scale, and then scale the drawing to fit a specific sheet for plotting. When using this system, you can focus on the floor plan layout, without having to concentrate on scaling objects. CAD has transformed the traditional process of setting up and laying out a drawing, by offering significant flexibility. Still, effective layout planning and preparation is critical. Determine the proper drawing orientation, sheet size, working area, scale, and drawing area before you begin drawing to increase productivity and limit costly and time-consuming mistakes. Sequence for Drawing Structural Floor Plan in AutoCAD Check off the features used with this floor plan drawing checklist and drawing sequence in AutoCAD. Note that each of these items are not required but rather guide in ensuring all the standard features of a floor plan is observable.  Exterior walls.  Interior walls.  Furring over concrete walls (if used).  Masonry veneer (if used).  Doors: Proper use of exterior doors; correct door  Swing direction; clearance from walls, cabinets, and traffic.  Door sizes or symbols for door schedule key.  Windows: Proper symbols; clearance from walls, cabinets, and traffic.  Window sizes or symbols for window schedule key.  Skylights located and specified.  Base cabinets.
  • 16. ICT – TECHNICAL DRAFTING – Grade 10 131  Upper cabinets.  Closets and storage: Closets and wardrobes labelled and with shelf and pole or additional shelves and drawers, storage closet, linen with shelves, pantry with shelves, special storage features noted.  Appliances: Cooktop/range, hood with vent or vent, oven, double oven, microwave, refrigerator, lazy Susan, washer and dryer with vent, trash compactor.  Utilities: Furnace, air conditioner, water heater with platform and straps. Floor Framing Plans Framing plans for each floor are drawn using the floor plan as a base. The floor plan layers that contain the walls, windows, doors, cabinets, and plumbing fixtures should be displayed, with all other floor information frozen. With the proper material displayed, complete the framing plan in the same order that was used with manual methods. 1. Layers can be added to contain materials for the framing plan. Each new layer is given the prefix of UPPR FRAM, MAIN FRAM, or LOWR FRAM to make it easy to identify required layers for plotting. 2. Sub-names for ANNO, DIMN, TRUSS, LATR, and BEAM layers must also be added. 3. Complete the drawing by adding major framing members first, and then working toward smaller members. Place beams that will be required to support joists or trusses, and then place a marker to represent each joist type. The joist markers can be stored as a block, and then inserted and stretched to the needed size. 4. Lateral bracing information can be added to the drawing using blocks. Schedules for one-level and multilevel construction bracing can be created, and the appropriate schedule can be inserted into the drawing.
  • 17. ICT – TECHNICAL DRAFTING – Grade 10 132 5. Symbols to represent each type of bracing can also be created as blocks and inserted into the required position throughout the drawing. Because the upper level materials are different from the lower braces, lateral symbols should be placed on layers that are level specific. This allows the lower floor lateral information to be displayed on the foundation plan without repeating the schedule. This requires the creation of layers such as UPPR FRAM LAT SYMB, MAIN FRAM LAT SYMB, or LOWR FRAM LAT SYMB. 6. Symbol information should be placed on a different layer than the lateral schedule. With the framing and lateral information represented, place dimensions to represent all walls, openings, and framing materials. 7. Dimension layers should be divided by level; some dimensions such as the overall and major jogs will be the same on all levels. This information can be placed on a layer titled BASE DIMS. 8. Wall-to-wall, and wall-to-opening dimensions should be placed on a layer that is specific to each level of the structure such as MAIN FRAME EXT DIMS. 9. Annotation can now be placed to locate all framing materials. 10.Notes should also be placed on layers that are level-specific. Local notes should be divided by layers to represent title block text and text that is level-specific.
  • 18. ICT – TECHNICAL DRAFTING – Grade 10 133 Suggested Activity 1 Directions: Below is a sample illustration of a typical floor slab detail. From your finished foundation plan, draft a floor slab detail, use the given slab schedule using the appropriate CAD tools/commands. Drafting Roof Framing Plans The roof framing plan can be created using the roof or floor plan as a base drawing. Upper and lower framing plans are created using the floor plans for the starting points. Two major methods are available to create these drawings. Information can be added to the base drawings and controlled by layers, or information can be added to a separate drawing and referenced to the original. If the roof plan is to be controlled by layers, it is important to remember that the base floor plan is plotted at a scale of 1/4" = 1'−0" and the roof framing plan is usually plotted at a much smaller scale. Because you are
  • 19. ICT – TECHNICAL DRAFTING – Grade 10 134 drawing in model space, you are working at full size, but you will need to adjust the line scale and the text scale factors for the appropriate scale on the roof framing plan. One alternative in creating a roof plan is to place the needed roofing materials using the floor plan as a base. This method can be especially helpful on a complicated stick-frame roof. If the floor plan is used as a base for a roof framing plan, show all of the walls printed in matted lines using grayscale, and show all roofing materials using black lines. Layer Method of Drafting Roof Framing Plans 1. Once the layout method is selected, add layers to contain materials for the roof plan. For this example, the drawing will be controlled using layers within the base drawing. 2. Give each new layer the prefix of ROOF FRAM to make it easy to identify required layers for plotting. 3. Add sub-names for ANNO, DIMS, TRUSS, and BEAM. Complete the drawing by working from the roof down to the foundation, and by adding major framing members first, and then working toward smaller members. 4. Draw standard trusses first in the center section of the roof, and then the hip trusses are represented. 5. Finally, draw trusses are drawn at each edge. With all materials represented, dimensions should be placed to locate material limitations, beam locations, and overhang sizes. 6. Provide notation to specify each material and framing member size that has been represented. Drafting Roof Framing Plans using CAD A roof framing plan can be drawn using a CAD program following procedures similar to those used for a manual drawing. The drawing can be created in the file containing the floor plan. 1. Start by freezing all floor plan material except the exterior walls, furniture, and skylights. 2. Create layers to contain the roof plan using the ROOF prefix. Layer names such as ROOF WALL, ROOF LINE, ROOF OUTL, ROOF ANNO, ROOF DIMN, or layer names based on the NCS should be
  • 20. ICT – TECHNICAL DRAFTING – Grade 10 135 used to keep the roof information separate from the floor plan information and to ease plotting. 3. Draw the outline of the residence on the ROOF WALL layer by tracing the outline of the walls on the floor plan, and then freeze the walls of the floor plan. 4. Complete the plan using the appropriate step-by-step process for the required roof type. Using the OFFSET command, the lines that represent the walls can be placed to represent the roof outline. 5. Use the PROPERTIES command to assign the lines to the appropriate layer, and to assign the required line weight and line type. 6. When the roof plan is completed, a copy can be saved as a BLOCK with a title ROOF. Suggested Activity 2 Directions: Select the appropriate CAD tools/commands in drafting the structural roof framing plan of the given floor plan below. Layout your proposal and have it approved by your teacher before you start drawing.
  • 21. ICT – TECHNICAL DRAFTING – Grade 10 136 Suggested Activity 3 Directions: Using CAD, draft the given truss connection details below. Suggested Activity 4 Directions: Based on the given sample roof framing plan below, perform the following: 1. Draft the structural components of the given roof framing plan. 2. Establish line scales and line weights fit for plotting at 1/8” = 1’-0”. 3. Use an architectural font for all text.
  • 22. ICT – TECHNICAL DRAFTING – Grade 10 137 Sample Roof Framing Plan Summative Assessment: Lesson 2 Directions: Using CAD, select the appropriate tools/commands in drafting the structural roof framing plan and the detailed connections appropriate to the given roof framing plan below.
  • 23. ICT – TECHNICAL DRAFTING – Grade 10 138
  • 24. ICT – TECHNICAL DRAFTING – Grade 10 139 Post-Assessment: Answer the post assessment test below to determine whether there is significant increase in your understanding of Drafting Structural Layout and Details using Computer-Aided Design (CAD). Directions: Choose the letter of the correct answer. Write your answer in the space provided for each number. _____ 1. Which circle is drawn with a bow compass? A. 360° circle C. irregular curve B. circle template D. flexible curve _____ 2. Where do you set your compass to draw a 21/2 diameter-circle? A. 1.25” B. 1.50” C. 2.00” D. 2.50” _____ 3. What is the purpose of an erasing shield? A. to prevent tearing the drawing media B. to avoid erasing nearby lines accidentally C. to protect areas that you do not want to erase D. all of the above are correct answers to the question _____ 4. Which of the following is not an advantage of sketching? A. refinement of ideas C. to communicate ideas B. to practice drawing D. to capture ideas _____ 5. An object is usually shown in more than one view in ____ drawing. A. a rough sketch B. a multi-view C.an isometric D. an oblique _____6. Concurrent engineering design involves ideation, implementation, and __________. A. aesthetics B. creativity C. life cycle D. refinement. _____ 7. What are the three principal views of orthographic drawings? A. Isometric, Perspective, Oblique C. CAD, ISO, ANSI B. Top, Front, Side (end) D. Top, Bottom, Side _____ 8. When using the TRIM command, which do you select first? C. The cutting edges C. The object to be trimmed D. Everything D. Nothing _____ 10. How many snap points does an object have? C. One C. Depends upon the object D. Two D. At least four _____ 11. How many points do you need to define for the rectangle command? A. One B. Two C. Four D. None
  • 25. ICT – TECHNICAL DRAFTING – Grade 10 140 _____ 12. How many AutoCAD objects are in a rectangle? A. None B. One C. Four D. Eight _____ 13. If you draw a line at 270 degrees, where does it point to? A. Up B. Down C. Left D. Right _____ 14. How long will a line be when drawn from 1,4 to 4,4? A. Four units C. Three Units B. Eight Units D. None of the above _____ 15. How long will line from 1,4 to @4<5 be? A. Three units B. Four units C. Five units D. 6.4031 units _____ 16. How many points do you need to draw a line using Absolute Coordinates? A. None B. One C. Two D. Four _____ 17. When selecting objects, what is selected if you press L? A. Select lines only B. Select the last object created C. Select objects when you move your mouse to the left D. Select the last object you modified _____ 18. What happen when you click Pressing Shift? A. It allows you to draw a window B. It removes the next selected object from the set C. It automatically deletes the object(s) D. It highlights the selected objects _____ 19. What does pressing “F” do when selecting objects? A. Allows you to draw a fence C. Finishes the selection set B. Limits you to five objects D. Allows to find specific text _____ 20. How do you select the last set of object(s) you selected? A. Type 'L' B. Type 'P' C. Type 'H' to highlight them D. Can’t be done _____ 21. What is the best way of drawing a rectangle? A. By using the Line command B. By using the Rectangle command C. By using the Polyline command D. By using the Multiline command _____ 22. If you move something four units to the right, what would be the 2nd point of displacement? A. @4,0 B. @4<0 C. Neither 1 nor 2 D. Both 1 and 2
  • 26. ICT – TECHNICAL DRAFTING – Grade 10 141 _____ 23. How would you select objects when using the stretch command? A. With a crossing window C. Pick them one by one B. Hold the shift key while selecting D. Type 'S' _____ 24. At what point does a drawing start? A. The first point you select C. A random point in space B. 0,0 D.10,10 _____ 25. At what point are objects rotated? A. Base point B. Bottom right of the object C. Centre of the object D. Origin
  • 27. ICT – TECHNICAL DRAFTING – Grade 10 142 Appendix A. Assessment Tool: Performance Rubrics Name: __________________________________ Date: __________ Year & Section: _______________ Criteria 5 points 3 points 1 point Proficiency Perform the task with competence and exceptional performance Perform the task with competence and with standard performance Perform the task with competence but below standard performance Method Followed the given procedure from start to finish, observed correct usage of command tools Followed the given procedure, noted once incorrect usage of command tools Followed the given procedure, noted more than once incorrect usage of command tools. Accuracy Perform the task with no error Perform the task with at least 1-2 errors Perform the task with more than 2 errors Time Management Finish the work on/before the given time Finish the work after the given time Unable to finish the work Rating Scale: Points Earned Numerical Rating Descriptive Rating 17 – 20 91 – 100 Outstanding 13 – 16 86 – 90 Very Good 9 – 12 81 – 85 Good 5 – 8 76 – 80 Fair 1 - 4 71 – 75 Needs Improvement Teacher’s Comments: Teacher’s Signature: _____________ Date: _____________ Note: This assessment tool can also be used in the evaluation of the following suggested activities: A. Suggested Activity 2 (Transfer), page 100 B. Summative Assessment Lesson 1, page 101
  • 28. ICT – TECHNICAL DRAFTING – Grade 10 143 C. Suggested Activity 1 (Process), page 104 D. Suggested Activity 1 (Process), page 107 E. Suggested Activity 2 (Transfer), page 108 F. Suggested Activity 1 (Process), page 110 G. Summative Assessment: Lesson 2, page 112 Appendix B Assessment Tool: Performance Rubrics Name: _____________________________________Date: __________ Year & Section: _______________ Criteria 5 points 3 points 1 point Line Technique Application of (all) various lines was used according to standards At least 3-5 lines were used not according to standards More than 5 lines were used not according to standards Accuracy All measurements and notations needed were accurately done At least 3-5 measurements and notations needed were inaccurately done More than 5 measurements and notations needed were inaccurately done Layout/Proportion All drawings were drawn proportionately and was layout properly Layout was good but 1-2 drawing were out of proportion More than 2 drawings were drawn out of proportion and improperly layout Time Management Finish the task ahead of the given time/date Finish the task on the given time/date Unable to finish the task on the given time/date RATING SCALE: Points Earned Numerical Rating Descriptive Rating 17 - 20 91-100 Outstanding 13 - 16 86 - 90 Very Good 9 - 12 81 - 85 Good 5 - 8 76 - 80 Fair 1 - 4 71 - 75 Needs Improvement