determine seismic forces for non-building structures

Question 1

determination of seismic factors - R, Ω & Cd

Answer 1

ASCE 7 - table 15.4-1 or 12.2-1 for non building structures similar to buildings

Question 2

seismic base shear, V

Answer 2

V = Cs W

Question 3

seismic response coefficient (Cs)

Answer 3

Cs = Sds/(R/I) - ASCE 7 (12.8-2) non building structures (ie,, when T<Ts)

Question 4

see page 1 - 89 for more Cs conditions

Answer 4

pg. 1 - 89

Question 5

non building structures NOT similar to buildings

Answer 5

determine of seismic factors - R, Ω & Cd - Table 15.4 - 2 for non building structures NOT similar to buildings

Question 6

seismic base shear, V

Answer 6

V = Cs W

Question 7

seismic response coefficient, Cs

Answer 7

Cs = Sds / (R/I)

Question 8

Cs shall not be less than:

Answer 8

Cs = 0.044 Sds I ≥ 0.03 minimum

Question 9

In addition, for nonbuilding structures where S1 ≥ 0.6…. Cs shall not be less than:

Answer 9

Cs ≥ .08 S1 / (R/I) minimum * asce 7 15.4.1, item 2 for an exception for tanks and vessels