swati structure.ipt
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The document provides details about the design of a G+2 residential building structure located in Delhi for Swati Structure Solutions Pvt. Ltd. It includes information on the design loads as per Indian codes, analysis of the structure using STAAD Pro software, load calculations, seismic design criteria as per IS 1893, and design and detailing of reinforced concrete structural elements. The structure will consist of a column-beam-slab framing system to resist vertical and lateral loads.
swati structure.ipt
- 1. SWATISTRUCTURE SOLUTION H.O.: 503, 5TH FLOOR SACHDEVA CORPORATE TOWER PLOT No. 8, COMMUNITY CENTRE, SECTOR-8, ROHINI DELHI-110085 E-mail:-swaticonsultant@gmail.com Web: swatistructuresolutions.com submitted by: ANKUR KUMAR Reg no.:-9910003003 3rd YEAR, B.TECH
- 2. INPLANT TRAINING REPORT Submitted By ANKUR KUMAR Reg no.:-9910003003 3rd YEAR, B.TECH In partial fulfillment of Bachelor of Technology in CIVILENGINEERING From 6/12/2012 to 27/12/2012 KALASALINGAM UNIVERSITY (Kalasalingam Academy of Research and Education) Krishnankoil-626190
- 3. COMPANY PROFILE Established in 1990, Swati Structure Solution Pvt. Ltd. stands for Quality, Reliability and Trustworthiness. A multifacetedorganization, SSPL provides an entiregamut of solutions, be it in Architecture, Infrastructure, Engineering and Planning. SSSPLwholly owned Indian company. SSSPLis one of the fastest growing infrastructure consultants in India. With offices in New Delhi & Chandigarh and plans to develop offices in south India. Our current areas of operations include Transport Planning, Roads,Bridges, Rail& Buildings. Today, there are more than 45 staff employed by SSPL in Delhi & Chandigarh, including specialists in the fields of transportation,highways, rail, bridges and civil engineering. Our employees have achieved several milestones, which are of tremendous importance to them and the company. AREA OF EXCELLENCE Sectors • Buildings
- 4. • Architecture • Bridge, Flyover & Interchanges • Foot over Bridge • Rail over Bridge & Rail under Bridge • Highway, Expressway & Village Roads • Traffic& Transportation Services/Studies • Planning and feasibility studies • Strategic option studies • Geotechnical, Hydrological & Other Investigation • Design, Project Preparation & Cost Estimation
- 5. TABLE OF CONTENTS INTRODUCTION REFERENCE BOOKS & IS CODES DESCRIPTION OF THE STRUCTURE AND STRUCTURAL SYSTEM DESIGN DATA ALLOWABLE DEFLECTIONS DESIGN PHILOSOPHY ANALYSIS, MODEL AND SOFTWARE USED LOAD CONSIDERATION LOAD CALCULATION SEISMIC DESIGN CRITERIA DESIGN & DETAILING OF RCC STRUCTURE LOAD COMBINATIONS FOR CONCRETE DESIGN OF STRUCTURAL ELEMENTS NET SAFE BEARING CAPACITY GUIDELINE NOTES DRAWING INTERPRETATION ANNEXURE-I (STAAD MODEL) DESIGN OF STAIR CASE SPANNING LONGITUDINALLY
- 6. 1. INTRODUCTION Based on the Architectural plans, section & elevation received from DUSIB DD-IV, R.P. Bagh, Delhi the proposed building is a dispensary located GaliZamirWali, NawabGanj,Delhi. Topography of site as per site plan is even and the natural ground level of site isconstant. In this brief report we are presenting the data and assumptions related to the project, which has lead to the design at final stage. 2. REFERENCE BOOKS & IS CODES IS 875 Code of practice for design loads for buildings and structures Part I Dead Loads Part II Imposed Loads Part III Wind Loads Part V Special Loads and CombinationsIS 1893:2002 Criteria for earthquake resistance design of structures IS 4326:1993 Code of practice for earthquake resistant design and construction of buildings IS 13920:1993 Code of practice for ductile detailing of reinforced concretestructures subjected to seismic forces SP 22 Explanatory handbook on codes for earthquake engineering, IS 1893 & IS 4326 IS 456:2000 Plain and reinforced concrete - Code of practice SP 16 Design aids for reinforced concrete to IS 456 SP 24 Explanatory handbook on IndianStandard Code for plain and reinforced concrete , IS 456SP 34 Handbook on concrete reinforcement and detailing IS 2502 Code of practice for bending and fixing of bars for concrete reinforcement IS 1786 Specification for high strength deformed steel bars and wires forconcrete reinforcement IS 269 Specification for 33 grade ordinary
- 7. Portland cement IS 8112 Specification for 43 grade ordinary Portland cement IS 12269 Specification for 53 grade ordinary Portland cement IS 1489 (Part 1) Portland-Pozzolona Cement -- Specification IS 383 Specification for coarse and fine aggregates from natural sources for concreteIS 9103 Specification for admixtures for concrete IS 10262 Recommended guidelines for concrete mix design IS 1904 Code of practice for design and construction of foundations on soilsIS:800:1984 Code of practice for general construction in steel 43. DESCRIPTION OF THE STRUCTURE AND STRUCTURAL SYSTEM The project consists of G+2 storey residential building. The typical blocks have 3 flats at each floor and common service core containing lifts, staircase and lobby. Tower framing system shall be column, beam & slab to resist both vertical & lateral loads. 4. DESIGN DATA CONCRETE Compressive strength of concrete, fck= 25 N/mm2 (For foundation, beam & slab) fck= 25 N/mm2 (For Column) Concrete density = 25kN/m 3 Concrete cover to the rebar are as follows a) foundation = 50mm b) columns = 40mm c) beams = 25mm d) Slabs = 20mm Modulus of Elasticity of Concrete, Ec = 5000√fck Concrete Poisson's ratio = 0.20 REINFORCEMENT
- 8. Reinforced steel yield strength, fy = 500N/mm2 Modulus of elasticity ofsteel, Es = 2.05X108kN/mm2 5. ALLOWABLE DEFLECTIONS a) The final deflection due to dead loads and live loads (unfactored) measured fromas cast levels of supports is not more than Span/250. b) The deflection after erection of partitions and the application of finishes is not morethan span/350 or 20 mm, whichever is the lesser Lateral Frame Deflection (StoryDrift) Under Seismic Load: Story Drift under nominal seismic loads is not more than 0.004h, where h is the story Height. Maximum value of story drift will be given after analysis. 6. DESIGN PHILOSOPHY a) Building has been analyzed for conventional loads, Structural members/ componentincluding foundation, RCC slab, beams and columns are designed for the dead, live & seismic loads. The beams and columns frame arrangement and design has been done by using STAAD PRO version V8i. b) All the RCC columns of the building are supported on Raft foundation. Foundation are typically designed for the reaction obtained from predominant load case, byanalyzing on STAAD PRO c) Serviceability & strength checks of foundation & members are carried out as per IS 456: 2000 5 7. ANALYSIS, MODEL AND SOFTWARE USED i) Super Structure: - The building has been analysed as a 3-dimensional skeletal structure of beam column frame structure using STAAD PRO version V8i software. ii) Sub Structure: -STAAD PRO V8i adopted for the analysis & design of foundation.
- 9. 8. LOAD CONSIDERATION Dead Loads includes self weight of structure is taken as per IS 875 (Part- 1) - 1987 Imposed Loads is taken as per IS 875 (Part-2) - 1987 Earthquake loads are calculatedas per IS 1893 (Part 1) : 2002 Load combinations shall be taken as per IS 1893 (2002) & IS 875 (Part-5) - 1987 9. LOAD CALCULATION 9.1 Dead Load a) Self Weight = Automatically calculated by software b) Brick wall load i) 230mm Thk. Wall = 5kN/m Run/m height Floor to floor height = 3.30m(Net Height) = 3.00-0.45 = 2.85m Weight of Wall = 2.85 x 5.0 = 14.25 kN/m ii) 115mm Thk. Wall = 2.75kN/m Run/m height Floor to floor height = 3.30m(Net Height) = 3.00-0.45 = 2.85m Weight of Wall = 2.85 x 2.75 = 7.838 kN/m Say 7.85kN/m iii) Parapet Wall 230mm Thk. (1.0m High) Weight of Wall = 1.0 x 5.0 = 5 kN/m c) Floor Load i) Typical Floor Self Weight of Slab = 0.125 x 25 = 3.125kN/sqm (This will vary for different slab thickness) Floor Finish = 0.05 x 24 = 1.2kN/sqm Ceiling Plaster = 0.006 x 20 = 0.12kN/sqm
- 10. Total Dead Load = 4.445kN/sqm Say = 4.50kN/sqm6 ii) Toilets Self Weight of Slab = 0.125 x 25 = 3.125kN/sqm Floor Finish = 0.05 x 24 = 1.2kN/sqm Ceiling Plaster = 0.006 x 20 = 0.12kN/sqm Sunken = 0.5 x 20 = 10.0kN/sqm Partition = 1.0kN/sqm Total Dead Load = 12.82kN/sqm iii) Kitchen Self Weight of Slab = 0.125 x 25 = 3.125kN/sqm Floor Finish = 0.05 x 24 = 1.2kN/sqm Ceiling Plaster = 0.006 x 20 = 0.12kN/sqm Sunken = 0.15 x 20 = 3.0kN/sqm Total Dead Load = 7.445kN/sqm Say = 7.5kN/sqm iv) TerraceLvl. Self Weight of Slab = 0.125 x 25 = 3.125kN/sqm (This will vary for different slab thickness) Water proofing/Brick Coba = 0. 2 x 20 = 4.0kN/sqm Ceiling Plaster = 0.006 x 20 = 0.12kN/sqm Total Dead Load = 7.245kN/sqm Say = 7.50kN/sqm 9.2 Imposed Load a) All rooms and Kitchen = 2kN/sqm b) Toilet and Bath Rooms = 2kN/sqm c) Hall, Corridors, passages, lobbies, staircases
- 11. including fire escapes and store rooms = 4kN/sqm d) Balconies = 3kN/sqm 10. SEISMIC DESIGN CRITERIA Seismic loads are calculated as per provisions of IS: 1893-2002. The parameters selected are given below Fundamental natural time period is taken as Ta = 0.075h0.75as per clause 7.6.1 of IS: 1893-2002, for R.C.C Frame Building. h = Height of building in meter. Parameter Value Z i.e. Zone Factor 0.24 (For zone IV) I i.e. Importance Factor 1.5 R i.e. Response Reduction Factor 5 h i.e. Height of Building As/arch.dwg. Length & width of Building As/arch.dwg. Soil Type Medium 7 Response Spectrum reduction factor is taken as 5.0 from table 7 of IS: 1893-2002 For special Reinforced Cement Concrete Frames (Moment resisting frames specially detailed to provide ductile behavior). The Time period of the structure has also been worked out using software. The building has been designed for base shear based on codal time periodin accordance with clause7.8.2 of IS: 1893-2002 using modification factor = VB/VBwhereVBis calculated based on codal time period Ta = 0.075h0.75 and VBis calculated based on time period given by software. The horizontal earthquake force has been calculated for the full dead load & Reduce liveload as per clause 7.3.1 Table-8 of IS:1893-2002. 11. DESIGN & DETAILING OF RCC STRUCTURE The design of RCC Beam & Slab is being done using IS: 456-2000 and SP- 16. Limit state method of structure design is being followed. Columns and beams are being designed using STAAD PRO version V8i software.
- 12. 12. LOAD COMBINATIONS FOR CONCRETE DESIGN OF STRUCTURAL ELEMENTS The limit state load combinations used for design of concrete structural elements such as beams & columns are as per IS:875 Part 5 and IS:456. They are listed below. Various load combinations considered are as follows:- 1. 1.5 (D.L+ Reduced L.L) as per Fig. 1 of IS: 875 – 1987 (Part-2) 2. 1.5 (D.L E.Q in Xdirection) - 3. 1.5 (D.L E.Q in -direction) Z 4. 1.2 (D.L + K1L.L E.Q in Xdirection) - 5. 1.2 (D.L + K1L.L E.Q in -direction) Z 6. 0.9 (D.L) + 1.5 E.Q. in X-direction 7. 0.9 (D.L) + 1.5 E.Q. in Z-direction D.L =Dead loads L.L = Live loads E.Q= Earthquake loads K1= 0.25 For live load class upto 300Kg/m2, 0.5 For live load class above 300Kg/m2 However unfactored loads are used for size& pressure calculations of foundation. 13. NET SAFE BEARING CAPACITY Geotechnical reportFoundation design shall be based on the geotechnical investigation report. The net safe bearing capacity of soil is 13t/sqm at 3.0m depth from N.G.L. 14. GUIDELINE NOTES
- 13. Guideline Notes for Concrete Work are available in General Detail Drawings and Notesof Swati Structure Solution Pvt. Ltd. and shall be supplied along with working drawings. Reinforcing steel specificationReinforcing steel to be used in this project is Fe500 grade T.M.T. bars corresponding to 0.2% proof stress The reinforcing steel should have a minimum elongation of 14.5%. Details and notes on reinforcement are available in General Detail Drawings and Notes of Swati structure solution pvt.ltd. The following are included in the notes: 1. Notes on reinforcement 2. Development length and lap length of reinforcement based on grade of steel and grade of concrete 3. Cover to reinforcement 4. Details of bends and hooks etc. 15. DRAWING INTERPRETATION Abbreviations, definitions, symbols and notationsAbbreviations, definitions, symbols and notations used in the structural drawings are obtained in the General Detail Drawings and Notes of Swati Structure solution pvt.ltd Typical details Typical details of various elements can be obtained in the General Detail Drawings and Notes of Swati structure solution pvt.ltd. In cases where specific details are not included in the structural drawings, reference shall be made to these details by the contractor. No construction work shall proceed on site without studying these General Detail Drawings and Notes
- 18. DESIGN OF STAIR CASE SPANNING LONGITUDINALLY