Wood Engineering

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This is a list of spreadsheets that allow the calculation of strengths and resistances for different wood elements and connections according to the Canadian structural wood design standard: CSA O86-09: Engineering Design in Wood. These spreadsheets are intended for educational purposes only and are not meant to be used as a design aid. Although effort has been made to ensure that these spreadsheets are accurate and work well, no warrantee is provided and they should be used at your own risk.

For background and general information on Wood Engineering, go to Wood Engineering Basics.

Wood Engineering Introduction

Wood Engineering Basics

Tension Elements

Designing Tension Elements

Lumber Element in Tension
Media:0-Lumber_Tension.xlsx
Glulam Element in Tension
Media:0-Glulam_Tension.xlsx

Columns

Designing Glulam Columns

Lumber column with axial load and different unbraced length in both directions
Media:1-Lumber Column.xlsx
Glulam column with axial load and different unbraced length in both directions
Media:2-Glulam Column.xlsx
Built-up nailed lumber column with variable number of plies (between 2 ply and 5 ply) - unbraced
Media:3-Built-up Lumber Column.xlsx
Built-up bolted glulam column with variable number of plies (between 2 ply and 5 ply) – unbraced
Media:4-Built-up Glulam Column.xlsm

Beams

Bearing Resistance

Curved Glulam Beams

Local bearing on a lumber or glulam beam (both)
Media:5-Local Bearing on a Beam.xlsx
Lumber beam with uniform distributed load
Media:6-Lumber Beam with UDL.xlsx
Glulam beam with uniform distributed load
Media:7-Glulam Beam with UDL.xlsm
Lumber beam with point load at the centre
Media:8-Lumber Beam with Point Load.xlsx
Glulam beam with point load at the centre
Media:9-Glulam Beam with Point Load.xlsx
Lumber Beam with a sloped notch at the support
Media:10-Lumber Beam with Sloped Notch.xlsx
Glulam Beam with a sloped notch at the support
Media:11-Glulam Beam with Sloped Notch.xlsx
Curved glulam beam with uniform distributed load
Media:14-Curved Glulam Beam with UDL.xlsx


Beam-Columns

Designing Lumber Beam-Columns

Designing Glulam Beam-Columns

Lumber beam-column with combined axial load and moment – unbraced
Media:12-Lumber Beam-Column.xlsx
Glulam beam-column with combined axial load and moment – unbraced
Media:13-Glulam Beam Column.xlsx


Bolted Connections

Two-member wood-steel (W-S) bolted connection, load parallel to grain
Media:15-Two Member WS Bolted Connection Parallel.xlsx
Two-member wood-wood (W-W) bolted connection, load parallel to grain
Media:16-Two Member WW Bolted Connection Parallel.xlsx
Two-member wood-wood (W-W) bolted connection, load perpendicular to grain
Media:17-Two Member WW Bolted Connection Perpendicular.xls
Three-member steel-wood-steel (S-W-S) bolted connection, load parallel to grain
Media:18-Three Member SWS Bolted Connection Parallel.xlsx
Three-member steel-wood-steel (S-W-S) bolted connection, load perpendicular to grain
Media:19-Three Member SWS Bolted Connection Perpendicular.xlsx
Three-member wood-steel-wood (W-S-W) bolted connection, load parallel to grain
Media:20-Three Member WSW Bolted Connection Parallel.xlsx
Three-member wood-wood-wood (W-W-W) bolted connection, load parallel to grain
Media:21-Three Member WWW Bolted Connection Parallel.xlsx
Three-member wood-wood-wood (W-W-W) bolted connection, load perpendicular to grain
Media:22-Three Member WWW Bolted Connection Perpendicular.xlsx

Nailed Connections

Two-member wood-wood (W-W) nailed connection, load parallel to grain
Media:23-Two Member WW Nailed Connection Parallel.xlsx
Two-member wood-wood (W-W) nailed connection, load perpendicular to grain
Media:24-Two Member WW Nailed Connection Perpendicular.xlsx
Three-member wood-wood-wood (W-W-W) nailed connection, load parallel to grain
Media:25-Three Member WWW Nailed Connection Parallel.xlsx