ETABS
1. Consider Tie beam from the footing, provide around5'
2.Section properties
- Frame Sections- Beam and column
- Slab sections- Slab
3. Frame sectionproperty data
-for columnnever forget (modify/show rebar)
4. Nagarpalika claims-9'14" ko beam i.e. 230*350and column- 1'*1'
5. Slab thicknessis normally 5"-(125-127mm)
6. Wall sectionsfor shear wall and lift wall whose thickness is around (7"-9")-230mm
7. Load patterns-Add new loads
● wall- dead -1 because we will calculate load of wall in excel later
● Partition wall load -dead -0
● Floor finish -dead -0
● Water tank load -dead -0
● Stair -dead -0
● Earthquake load (EQx/EQy)-dead -0
○ type -seismic
○ auto lateral load -IS 1893-2002
○ modify lateral load
○ check x/y dir +eccentricity
○ seismic coefficient -zone 5- 0.36 per code
○ site type-from soil test results-||
■ less than100 -|||
■ 100-150 - ||l
■ great than 150 - |
○ response reduction factor -5
○ importance factor- 1
■ important building like school,hospital-1.5
■ residential -1
○ Time period -user defined -0.075*H^0.75
8. Mass source
Base shear = Seismic Weight* Coefficient Modify
uncheck element self mass check specifiedload pattern
● LL > 3=multiplier -0.5 (50%) (0.5-multiplier)
● LL <= 3 -0.25 (25%)(0.25-multiplier)
● other load - 1
● no earthquake load because seismicweight =DL +factor*LL
9.Load combination
● Add default designcombination
● Concrete frame design
10. Diaphragm
( definediaphragm for each floor)
11. Modelling
12. To checkwhether all the details are correct or not go to checkbox on top of optionsgrid
● select
● object assignment
● sections
● check mistakes
13. Apply loads (select and assign) For LL<3
● residential buildings-roof-1.5
● Balcony and stair-3
● Slab -2
● Floor finish -1
● Partition wall load - 2
14. Diaphragm
● Select all drawing
● assign
● joints
● diaphragm
● D1 D2 D3…
15. Analyze
● che88⁸ckmodel
● select all
● Run Analysis
16. Display
● story response plots ( permissible range 0.04*story height)
● Case/combo - EQx ,EQy ma check with (building height* 0.004*1000)
● Display type - Max story drifts
17. Display - Show tables
● Analysis
● Result
● modal result
● Modal participating mass ratios
● Center of mass and rigidity
● Reactions ma joint reaction selectall joints
18. Analyze
● set load casesto run
● Calculate diaphragm centersof rigidity
● Again 17.
19. According to Code X\YCCMshould not exceedmore than 5% due to mass and stiffness
20. Modal participating mass ratios ma
last ma 1 huncha that means 100% participating. Also Ux and Uy ma cross ma 50% above vayo vane buildinglai ramro bhanincha . Also do check time period.(1-2 sec permissible )
21. Design
● concrete frame design
○ view/revise preference
○ Select design combination
○ start design check
22. Display
● Force /stress diagrams
● support/spring
● Dcon2
● tabulated
● FzMxMy
● show tables ma
23. After design and details select elevation,select any grid ,click any beam/column, appears a box of "concrete column design information", click summary ,provides shear
24. Deformef shape (on top of the option box) that providescontour.
-EQx/y
-draw contour
25. Animation
For detail:
1. https://www.youtube.com/watch?v=ctppXHxFJNA&list=PLLi68WcVVEamQKy0Gmr6k6iNcLbyZ5PCA&index=4&t=361s
2. https://www.youtube.com/watch?v=_AANqU3_yQU&list=PLLi68WcVVEamQKy0Gmr6k6iNcLbyZ5PCA&index=5
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