Collector / Drag Strut Axial Force (ASCE 7 12.10)
The accumulated axial force in a collector (drag strut) that gathers diaphragm shear across an opening and drags it back to the shear wall: collector_force = unit_shear x collector_length, plus the ASCE 7 12.10.2.1 Omega0 overstrength demand the diaphragm chord never carries. The separate load path diaphragm-shear leaves out.
Formula and source
collector_force = unit_shear x collector_length; collector_force_omega = Omega0 x collector_force.
The ASCE 7-22 Section 12.10.1 / 12.10.2 collector (drag strut) axial force and the 12.10.2.1 overstrength demand, by name.
Audience
This tile is built for trades and the adjacent professions in the Carpentry and Construction group. The interactive calculator runs entirely in your browser. No account, no fee, no advertising, no tracking.
Related tools
Posture
Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.