STRUCTURAL ENGINEERING FORUM OF INDIA [SEFI]

Dear Hemal,

I agree with the fact that SSI will not affect the response of buildings founded on rock or rock like material.

But, as there is scope for difference in opinion in codal provisions ...

Dear Er Vijayarathnam,

Cl 6.1.4, IS1893 Part 1 : 2016
Soil structure interaction may not be considered in seismic analysis of structures supported on rock or rock like material at shallow depth. ...

Dear Sir,

I think IS1893 Part 1 has missed the provisions of separate stiffness modifiers for SLS.

If we compare these provisions with ACI318-11 (ACI318-14 is having major changes about the pro ...

Dear Sasindran,

Following 2 points to be considered carefully while modeling steel elements in STAAD

1. Orientation of members shall be correct: This use to be problem generally for angle member ...

Dear Er Vijayarathnam,

I prefer following philosophy for the considering foundation stiffness.

1. Analysis 1: Assign fixed support irrespective of tie / Grade beams.

2. Work out foundation ...

Amol,

We need to interpolate for the intermediate values of damping.

BIS has issued IS1893 Part 1 : 2016 recently and suggested to consider 5% damped response spectrum irrespective of MOC. I pre ...

Dear All,

Refer the Cl c-3, page no 44 in the following book.

http://www.iitk.ac.in/nicee/IITK-GSDMA/EBB_001_30May2013.pdf

This will focus on the requirement of 15% separation of time period ...

Dear Arunkumar,

It wont be possible for me to share project calculation. But, you can refer to the following procedure.

Consider the building with following configuration
a. Height of the build ...

Dear Er Aayush,

Modeling of brick infill in STAADpro / ETABS is not necessary.

Building without brick infill, T = 0.075 h ^ 0.75

Building with brick infill, T = 0.09 h / sqrt (d)

Second ...

Dear Er Aayush,

Formulas proposed in the IS1893 Part 1 are empirical formulas. Hence, we can not make such modifications to such formulations.

Any proposed modifications shall either be support ...