Steel Structure design in ETABS tutorial- Complete guide

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Finite element Modelling of steel structure in etabs
4 Storey building
1st storey = 15 feet
Remaining storeys = 12feet
All Bays are 24x24ft
Steel moment frame
Composite floor system
No beam deeper than 18inches
Dead load = Self weight+40psf(partitions etc.)+300lb/ft on perimeter beams
Live load = 100psf(Reducible as less than 100psf See ASCE 7-10 code)
Earthquake load ASCE 7-10 as default in Etabs
Wind load ASCE 7-10 at 100mph

Steps for design of steel structure using etabs
Grids define for steel structure building in etabs
Material define
Import beams and columns W shapes
Lateral force resisting Beams shall be preferably W16-W18
Lateral force resisting Columns shall be from W14-W18
Define autoselect section list
Define Deck section as designed -For deck design refer to manuals such as vulcraft (USA) etc.
Master storey and draw in similar storeys
Draw lateral force resisting beams (AutoLatBm) and columns (A-LatCol)
Secondary beams by quick draw beams (A-CompBm)
Metal Deck on steel beams (Draw as clockwise) without meshing on frames
Add exterior cladding for application of wind load by auto draw cladding by floors as they define perimeter of our building in our case, the cladding must have no stiffness or mass
Load patterns
Dead,Super dead, Cladding, Reducible Live,EQX,EQY ,Wind X,Y
Modify Seismic load and define parameters as per ASCE 7-10 code
Wind loads using exposure from frame and shell include shell objects
Apply Gravity loads to model (SDL, Cladding)
Draw developed elevation definition (R,B,T,L) for unfolded view
Turnon local axis of shell
Go to left and assign wind pressure coefficients (At windward Cp =-0.8 for positive X direction)
Go to Right and assign wind pressure coefficients (At Leeward Cp =0.8 for positive X direction)
Similarly for Y direction apply loads as per local axis orientation of cladding shell
No diaphragm is assigned to steel deck
Add Combinations in combos and design of beams, columns and secondary beams
Run Model
Check SFD, BMD, AFD of model
Right click a secondary beam and go to design tab see its selected as composite beam design
Design of composite beams, View revise composite beam overwrites, AISC 360-10, Unshored Construction, Deflection, Walking Vibration, Start design check
Verify design and analysis section
Right click on any composite beam and see analysis and design section difference
You may check design report
Re run for matching the analysis and design section
Verify all members passed
Select all frames, design composite beams and make the auto section as null to remove a list assigned and make a single design section assigned to members
Now its up to you the whether make uniform design by selecting a single heaviest secondary beam and assign to all secondary beam.
Proceeding to lateral force resisting beams
Select beams and go to steel design option and select lateral bracing option as user defined, and assign at quarter points(0.25,0.5,0.75 at bottom) as we have secondary beams providing lateral bracings to these beams
Select all beams again and overwrites as IMF or SMF as per your choice
Right click on beam and go to design tab see its selected as Steel Frame design
Start design
Re-Run, for analysis and the design sections
Check PM ratios
Check the analysis and design section difference
Verify all members passed
In the next videos we will discuss in detail the design of columns, steel plate shear wall design, how to design different steel structures, framing systems, the complexity of different types of structural stabilities specially in tall buildings .

#Etabs #design #Engineering

[EngineeringLearningPlatform]

Watch and learn Basics of Design of Steel structures in ETABS

[hariasssss]

hi, when assigning the lateral bracing, why you selected the all the perimeter beams because only some of the beams are connected with the purlins while other beams are not connected with purlins. But you assigned lateral bracing points to all the perimeter beams. can you explain me. ?


when assigning the lateral bracing points, why you provided bracing type as bottom? What does it mean ?

[sheikhsadi]

this video helped me a lot. thanks. i noticed there is no stair case, lets say if i want to make a steel stair case what should i do ?

[emilioconde]

Can you explain the lateral bracing you used in this video? How does this look like in real life?

[husseinmahdi]

Regarding side wall and roof coefficient we don't need to apply....just windward wall cofficient and leeward wall coefficients?

[tekdhant]

Thank you so much for the video!! It really helped me!!

[qualityengineersguide]

How to print the calculation into an excel file or word file to submit to the municipality?

[qualityengineersguide]

Can we do Secondary Beam not Composite?

[suhasnag]

can you please make a tutorial video of diagrid highrise steel structure.

[m.shaihanayub]

Can we design metak deck on software as well?

[martinfery]

how to analyze profil castellated in etabs?

[gaganpatidar]

informartive video. Can u make on video that why etabs and staad pro gives different values for bending moment and shear force (for same structure with same material and sections). Plz

[structurelearninghub]

Your model is showing time period 2.335 second why?