Return to index: [Subject] [Thread] [Date] [Author]

Maximum base shear

[Subject Prev][Subject Next][Thread Prev][Thread Next]
UBC 97 formula 30-5 page 2-14 states that
the base shear need not exceed the value of the following;
 
V=2.5 Ca I W/R
 
for zone 4, at less than 2 km from a fault and using
maxumum values of Ca and I, and R=8.5 for SMRF(Concrete) This was 12 in UBC 88
 
Ca = .44(1.5)
V=Wx2.5x.44(1.5)(1.25)/8.5
V=.243W
 
This says that  .243G  is a maximum for buildings.
 
Could this g force be exceeded by an  intensity 7
earthquake?
 
Thanks in advance.
 
 
Alex C. Nacionales