CoLateral
Design Checker

Wood Shearwall and Diaphragm Designer

Preliminary CSA O86 single-wall shearwall calculator - unit shear, hold-down demand, overturning, and four-term deflection.

Design CheckerCSA O86Screening tool
Wood Shearwall and Diaphragm Designer running in the CoLateral workspace
Wood Shearwall and Diaphragm Designer in the CoLateral desktop workspace.

What it does

Preliminary CSA O86 based SINGLE-WALL elevation calculator: lateral point loads and gravity loads on one wood shearwall, unit shear vs a source-tagged sheathing schedule, hold-down / chord tension and compression enveloped over both loading directions, overturning vs gravity restoring, and the CSA O86 four-term deflection (bending, panel shear, nail slip, anchorage) against a drift limit.

What it does not do

One wall segment at a time - diaphragm distribution (flexible/rigid), torsion, collectors, chords between segments, and multi-storey stacking are NOT implemented. Sheathing schedule values are representative placeholders unless replaced with verified CSA O86, CWC, CCMC, or manufacturer data. Perforated shearwall method, automatic NBC wind and seismic loads, CLT systems, and final connection selection are not implemented.

How to use it

Use for preliminary lateral system layout, demand collection, and review planning only. Verify all resistance values, fastening schedules, hold downs, collectors, chords, diaphragm assumptions, and code clauses before project use.

Covers

woodshearwalldiaphragmo86lateralhold downcollectorchorddrifttorsion

Use Wood Shearwall and Diaphragm Designer in your own projects

Every tool ships inside the CoLateral desktop workspace, so a result can stay attached to the project, the drawing, and the review trail it belongs to instead of ending up in a loose spreadsheet.

Outputs are design aids and stay in draft until a qualified engineer reviews and approves them.