How to calculate base shear for time period more than 0.06 sec
How to calculate base shear for time period more than 0.06 sec
(OP)
Hi,
I will really appriciate if somebody can tell me how to calcullate base shear of non building structure when fundamental time period is more than 0.06sec.
I can find V = 0.30SdsWI (Eq 15.4.5-ASCE7-05 ) fundamental time period less than 0.06 sec.
can we just use V=0.03XW ( section 15.4.1)
Thanks in advance
I will really appriciate if somebody can tell me how to calcullate base shear of non building structure when fundamental time period is more than 0.06sec.
I can find V = 0.30SdsWI (Eq 15.4.5-ASCE7-05 ) fundamental time period less than 0.06 sec.
can we just use V=0.03XW ( section 15.4.1)
Thanks in advance






RE: How to calculate base shear for time period more than 0.06 sec
RE: How to calculate base shear for time period more than 0.06 sec
It is tank of 5' dia radius, 36 ' high made of steel.Tank will store argon gas.
RE: How to calculate base shear for time period more than 0.06 sec
ASCE 7 seems to be very poorly written for applications such as this, and it is not always clear what the meaning, if any, is.
RE: How to calculate base shear for time period more than 0.06 sec
Thanks for replying back. Let me rephrase may questin, may be I was not very clear in my first post. It is not the tank I am designing. It is the support system , as these tanks are elevated 1.5' above the ground by steel coulmn.
I need to have base shear of the tank to design base plate and hilti anchor bolts.
Thanks in advance
RE: How to calculate base shear for time period more than 0.06 sec
It looks to me like you found a hole in the ASCE standard. As the section you cite is titled "Rigid Nonbuilding Structures", my first inclination was that there must be a section for "flexible nonbuilding structures". But I haven't been able to find anything to help you out. The commentary is pretty useless.
If I do find something, I will post again.
RE: How to calculate base shear for time period more than 0.06 sec
You might also want to confirm with the vessel designer if there is any anticipated loading or horizontal movement at the base plates due to pressurization, vertical loading, or temperature changes in the tank.