ETABS BASIC DESIGN
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This document provides instructions for analyzing and designing a G+4 multistory building using ETABS. It includes steps to model the building with beams, columns, slabs and walls. Materials are defined for concrete, rebar and masonry. Section properties are created for beams, columns and slabs. The building grid is laid out and elements are drawn. Supports are assigned and loads including dead, live, wind and earthquake are applied. Load combinations are defined and an analysis is run to obtain shear and moment diagrams and joint reactions.
ETABS BASIC DESIGN
- 1. ETABS BASIC DESIGN R. UDHAYASANKAR., M.E sankarme7@gmail.com 7639444321,9597771821 Analysis and design of multistory building
- 2. SPACE FRAMED STRUCTURE Rectangular section G+4 Beam = 230*300 mm Main beam = 230*450 mm Column = 230*450 mm Slab thickness = 200 mm Wall thickness = 230 mm Load = 3 kN/m
- 3. STEP 1 Open →The ETABS → Click → New Model Model initialization Click → Use built in setting with Display Metric SI Steel section data base Indian Steel design code IS 800-2007 Concrete design code IS 456-2000 Click → Ok STEP 2 Grid Dimension Plan New model → quick templates Number of Grid Lines X Direction = 5 Number of Grid Lines Y Direction = 5 Spacing of Grid X Direction = Uneven spacing Spacing of Grid Y Direction = Uneven spacing Click → Custom Gird Spacing
- 4. Edit Grid Data Click → Display Grid Data Grid IdX Spacing Grid IdY Spacing A 3 1 4 B 4 2 3 C 4 3 3 D 4 4 3 E 0 5 0 → OK Story Dimension Number of Stories = 5 Typical Story Height = 3 Bottom Story Height = 2 → OK
- 5. STEP 3 • Material • Property • Support • Load • Analyses Material Add concrete material Click→ Define → Material Property → Define Material→ Click → Add New Material Property Region Indian Material concrete Standard Indian Grade M 20 Ok→ Ok → Ok Add Rebar Material (Reinforcement) Click → Define → Material Property → Define Material → Click→ Add New Material → Add New Material Property Region Indian Material Rebar Standard Indian Grade Fe 415
- 6. OK → OK → OK Add Masonry (wall) Click → Define → Material Property → Define Material → Click → Add New Material → Add New Material Property Region Indian Material Masonry Standard Indian Grade - OK → OK→ OK Plinth Beam 230 X300 Property Define → Section Properties → Frame Section → Frame Properties → Add New Material → Concrete → Click → Rectangle Frame Section Property data Property name = Beam 230 *300 Material = M20 Section dimension Depth D= 300 mm Width B= 230 mm Click → Reinforcement → Click Modify show rebar Design type Click→ m3 design only (beam) Rebar material Longitudinal bar = Fe 415 Conferment tiles = Fe 415 Cover to longitudinal rebar cover Top bar = 41 mm
- 7. Bottom bar = 41 mm Ok→ Ok → Ok Main Beam 230 X 450 Property Define → Section Properties → Frame Section → Frame Properties → Add New Material → Concrete → Click → Rectangle Frame Section Property data Property name = Beam 230 *450 Material = M20 Section dimension Depth D= 450 mm Width B= 230 mm Click → Reinforcement → Click Modify show rebar Design type Click→ m3 design only (beam) Rebar material Longitudinal bar = Fe 415 Conferment tiles = Fe 415 Cover to longitudinal rebar cover Top bar = 41 mm Bottom bar = 41 mm Ok→ Ok → Ok COLUMN 230 X 450 Property Define → Section Properties → Frame Section → Frame Properties → Add New Material → Concrete → Click → Rectangle Frame Section Property data
- 8. Property name = Column 230 *450 Material = M20 Section dimension Depth D= 450 mm Width B= 230 mm Click → Reinforcement → Click Modify show rebar Design type Click→ m3 design only (Column) Rebar material Longitudinal bar = Fe 415 Conferment tiles = Fe 415 Ok→ Ok → Ok
- 9. SLAB 200 SLAB PROPERTY SLAB Define → Section Property → Slab Section → Add New Property Property Name Slab 200 Slab Material M20 Modeling Type Shell Thick Thickness 200 mm Ok→ Ok
- 10. WALL 230 WALL PROPERTY WALL Define → Section Property → Wall Section → Add New Property Property Name Wall 230 Wall Material Masonry Modeling Type Shell Thick Thickness 230 Mm Ok → Ok
- 11. STEP 5 • Draw Beam • Draw Column • Draw Slab • Draw Wall Draw the Beam B1 PLINTH BEAM Change the Plan View Click → View → Click→ Set Plan View → Story 1→ Ok (Z = 2m) Click → Draw→ Draw Beam → Click Quick Draw Beam Properties of Object Property Select Beam → 230 *300 → Ok Draw the Beam B2 MAIN BEAM Click →View→ Click Set Plan View → Story 1→ Ok (Z = M) Click → All Story Click → Draw→ Draw Beam → Click Quick Draw Beam Properties of Object
- 12. Property select beam → 230 *450 →ok Draw the column Click →All Stories Click→ Draw Column → Quick Draw Column Property →230 X 450 → Ok Draw Slab Click→ All Story Click → Draw → Draw Floor → Click → Quick Draw Floor Properties of Object Property → Select → Slab → 200 Draw Wall Click→ All Story
- 13. Click →Draw→ Draw Wall→ Click → Quick Draw Wall Properties of Object Property →select → wall 230 How Cut the Wall Click→ Draw Wall→ Draw Wall Opening Click → Wall Double→ Click Draw STEP 6 Support Select the node a point
- 14. Select→ Assign→ Joint→ Restraint → Select→ Fixed→ Ok STEP 7 CRETE THE C.G OF THE BUILDING Select → Whole Building Click→ Assign → Shell → Diaphragms → D1 → OK CLICK • LOADS • DEAD LOAD • LIVE LOAD • WIND LOAD
- 15. • EARTHQUCK LOAD LIVE LOAD Select All Floor Slab Click→ Select → Select→ Properties Slab → Section → Select → Slab 200 Select → Close Apply→ Live Load on Slab Assign → Shell→ Loads → Uniform Load Pattern → Name Live Load Load 3 kN/mm2 → Ok Apply Wind and Earthquake Load Wind Force Define Load Pattern Define Wind Load Load Wind Load Self- 0 Auto Lateral Load Is 875 Add New Load Click → The Load →Click Modify → Lateral Load
- 16. → Ok Earthquake load Define EQ Load Seismic Self 0 Auto Lateral Load Is 1983 2002 Add New Load Click The Load → Click → Modify Lateral Load → Ok
- 17. → Ok Load combination Define load combination ADD new load Combo 1 Dead Load 1.5→ Add Live Load 1.5 →Add Wind Load 1.2→ Add Seismic Load 1.2 → Add → Ok → Ok → ok STEP 8 Analyze
- 18. Select→ Analyze → Run analyze STEP 9 Click →Display →Force Stress→ Diagram Fram /Pier Select → LIVE LOAD Shear force shear 2-2 Bending moment 3-3 Display option Click → show value at controlling stations on diagrams → OK Joint Reaction Click → Display → Force /Stress Diagram →Supporting Spring Reaction → Select Load → Dead or Live → Ok ‘ → Ok ‘ → Numerical Value Select →Display→ Show Table→ Click→ Analysis →Ok