Question 3.6: Determine diaphragm design force Determine the diaphragm des...

Elementary Structural Analysis and Design of Buildings: A Guide for Practicing Engineers and Students

Determine diaphragm design force
Determine the diaphragm design force $F_{px}$ at each floor of the building. Floor and roof diaphragm seismic design forces are determined in accordance with
$F_{px}=\frac{\sum\limits_{i=x}^{n} {F_i}}{\sum\limits_{i=x}^{n} {w_i}} w_{px}$ (3.24) (ASCE 7 Equation 12.10-1)
where:
$F_{px}$ is the diaphragm design force
$F_i$ is the design force
$w_i$ is the seismic weight
$w_{px}$ is the seismic weight of diaphragm

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