ETABS - Diapraghm Forces

DIAPHRAGM FORCES

1. Applied diaphragm forces (define diaphragm using semi-rigid option)

1. Display any stress or shell force for the relevant load case

1. For maximum chord forces, Draw or define a section cut where maximum chord forces are expected

1. Moments in Z are the in-plane moment in slab make sure angle is zero, refresh as required

1. The value of Z moment divided by slab width is equal to compression and tension chord forces

1. Shear and collector forces at slab-shear wall connection , draw or define section cut next to support following wall direction

1. Make sure angle is zero, in this case shear/collector force is equal to F2 or 2559lbs as expected