Seismic Demands in Nonstructural Components

This calculation determines nonstructural component seismic design forces per ASCE 7 or NBC 2020.

Code:
US flagASCE 7
S_DS(g)

Design spectral acceleration at short periods

Constraints
min: 0step: 0.01
I_p

Component importance factor

Constraints
min: 1step: 0.25
W_p(lb)

Component weight

Constraints
min: 0
z(ft)

Height from the point of attachment to the seismic base

Constraints
min: 0step: 1
h(ft)

Overall depth of cross section

Constraints
min: 0.001step: 1
a_p

Amplification factor

Constraints
min: 0step: 0.5
R_p

Response modification factor

Constraints
min: 0step: 0.5
Q_o

Overstrength factor (for anchorage in concrete/masonry)

Constraints
min: 0step: 0.5
FₚWₚhhzz

Calculation Steps:

    Component parameters
    • Component = Custom
    • Amplification factor: ap = 1
    • Overstrength factor: Ω0 = 1 (for anchorage design in concrete or masonry)
    • Response modification factor: Rp = 1
    Calculate the horizontal design force, Fp
    • Fpmin

      Minimum seismic force

      lb
    • Fpmax

      Maximum seismic force

      lb
    • Cp

      Seismic coefficient

    • Fp

      Horizontal seismic design force

      lb
    User Notes: