Chord & Collector

Diaphragm chord force and collector / drag-strut member design.

Design diagram — updates live with your inputs

Diaphragm Geometry & Loads

Diaphragm span L (ft) Parallel to load

Diaphragm depth W (ft) Perpendicular to load

Lateral load w (plf) Distributed shear

Load duration Sets CD

Collector length L_c (ft) Un-walled length feeding the shear wall along the collector line

Material type

Species Sawn lumber only

Grade Sawn lumber only

Member net area A_net (in^2) Net section of the chord / collector member

Splice capacity (lb) Provided splice/connection capacity (0 = skip the check)

Service condition Sets CM

Temperature Sets Ct

Incised lumber Yes Sets Ci

NDS 2018