Hi,
I have to perform a Response Spectrum Analysis and Structural Design of a horizontal vessel structure in STAAD with following information:
CODE - Indian Codes for seismic and structural (IS1893, IS800-LSD)
RESPONSE SPECTRUM ANALYSIS (RSA)
It is a site specific spectra provided by Client in form of - Frequency vs Sa/g.
MY QUESTION:
1. Should I convert the Frequency vs Sa/g to ------> Time vs Sa/g (Generic Spectrum) and use it in RSA.?
2. Since it is a Generic Spectrum----- Do I have to multiply the values by 9.8 (g) so as to use it in RSA.?
3. Any other scaling factors to be used ?
STRUCTURAL DESIGN
The Horizontal Vessel is long and is supported on Saddle supports (6 saddles & 6x2=12 support points). Further saddles are supported on Framed Supporting Structure (beams & columns).
Out of these 6 Saddles, 2 are fixed and rest are Sliding.
MY QUESTION is
1. I have modeled the Horizontal vessel + Saddle + Supporting Structure. How to model the Sliding supports i.e. Joint b/w saddles and supporting structure (refer marked sketch)
Any help is appreciated.
Thanks in advance.
