Basic Diaphragm Action
Definition
Flexible vs Rigid
section 3.3
section 9.11
Transverse vs Longitudinal Loading
chords - boundary members ⊥ to the applied force
collectors (struts) - boundary members // to the applied force
Shear vs Bending
sheathing - shear - web
chords - moment (couple) - flanges
collectors (struts or drag struts) - reactions to shearwalls
drags or collects the diaphragm shear into the shearwall
Lots of Seismic Comments... pages 9.6-7