Hussain Abid

Rana! Is there any other difference between ver 8 and ver 16 except that as mentioned by you?

Completely different. That means modelling two buildings separately

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Thanks for the reply.in order for more precise understanding of the subject topic i share a link.if time allows, kindly reply 'YES'. The link is

Dear experienced fellows After completing the model in Etabs, what's the next step for foundation design. What i have learnt is that: 1- Do we have to import the Edb file into SAFE? I didn't get this point of modelling foundation in Etabs coz i have learnt that foundation is modelled in SAFE only 2- we have to get the forces value i.e Factored axial loads and bi axial moments from reactions in ETABS and design foundation in SAFE accordingly? Thnx in anticipation

Bundles of thaks

im attaching screenshot for the beams b/w grids F &H. im unable to make out the three values 0.9,0.2,0.9 and 0.6,0.6,0.4. These values show the top and bottom reinforcement values, how to interpret these values?

It would be nice if you could elaborate the same case with beams reinforcement.

Thnx for your valuable comments.

LIVE load option in static load cases is assigned when we have parking load on floors, otherwise assign REDUCIBLE LIVE load option for normal load occupancy i.e movement of people, luggage etc.

Aoa dear experienced fellows. Can anyone let me know how can we do the detailing of a 15"x30" rcc column with 4.5 in2 of Ast. Do we have to use ACI SECTION 7.7 Equations for the purpose or any other fomula or thumb rules etc. Any suggestions in this regards are highly appreciate. Thnx

Dwar Baz in the above link file not found.we usually select Tributary Area for L.L.R,can sm1 explain why its done and wat abt other options like Influence area etc.thnx

Dear all,i found out the reason why column reinforcement was 1℅ in all columns and it was that i had erroneously assigned oversized column dimensions in some columns. But my second querry yet remains unanswered that is whether the building be modelled as a whole or separated into two portions in order to avoid errors.thnx n regards

Dear waqar I'm uploading architecture and edb file of the model.i have separated the building by providing expansion joint.the file in etabs model is one portion of the building, I'm working on it.secondly if we dont want to provide expansion joint thn wat to do? coz when i model the entire building then lots of errors are coming so i separated the building now there aren't any errors.all suggestions will be highly appreciated.thnx n regards STATIC MODEL.EDB STATIC MODEL.$ET AMMALGAMATION PLAN-Model.pdf

R.c Hibbeler's structural analysis is also worth reading and enjoying 😁

Dear Uzair, I'm also facing the same problem.my building is in zone 2A,soil sd,all spans are less than 25ft,slab thickness 6",size of columns and beams are 12"x30" and 9"x18" respectively. Seismic load cases are 4. End result is all columns are having steel 1%.is it ok to have same %age in all columns? Or something is definitely wrong? Secondly building shape is pretty regular and no of stories are eight.rigid diaphragm assigned.etabs version 9.7.5. but i just remember i erroneously defined 25% live load in mass source command as the building is for purely residential purpose as against Warehouse or a garrage where we define 25% of L.L.?

Thnx a lot for ur kind co operation.i ll check it

Wat abt static analysis!! How to get T if performing static analysis.i think go to TABLES, isn't it?

interesting discussion!!! but how can we check T i.t the fundamental time period in ETABS?

interesting discussion!!! but how can we check T i.e the fundamental time period in ETABS?

Kindly elaborate the second point sir,thnx

Aoa dear S.Es Wat is the criteria for selection of a particular type of a foundation especially with reference to an RCC building? e.g A RAFT or SINGLE FOOTING?

Dear Baz, From your discussion,wat i hv been able to conclude is that a column will b designed as a Short column(neglecting p-delta)or Long column(including p-delta.is it so,sir?

Aoa respected SEs.it has been learnt that p-delta effects are considered under certain conditions.it is not necessary to consider it in every project.wat are the conditions? When to include it n when not? Elaborative comments will be highly welcome.thnx n regards

THNX for reply sir it wud b convenient for me if u write down step by step procedure for adding load combos.can u plz write down step by step procedure for adding load combos,i also hv seen ur ETABS CHECKLIST but still im unable to understand.hope u understand my point.looking for ur expert comments.