Structural Engineering Calculator to Analyze Wood Glulam Members in Bending and Shear per NDS 2015

May 4, 2018 Abdul Siraj, P.E.

Calculator Description

This online engineering calculator computes the actual bending and shear stresses and allowable bending and shear stresses for a wood glulam member in bending and shear according to the National Design Specification for Wood Construction 2015 (NDS 2015)

Calculator Link

Input Parameters

Bending Moment, M

Maximum Shear Load, V

Member Width, b

Member Depth, d


Load Duration Factor, Cd – NDS 2015, Section 5.3.2

Wet Service Condition Factor, Cm – NDS 2015, Section 5.3.3

Temperature Factor, Ct – NDS 2015, Section 5.3.4

Beam Stability Factor, CL – NDS 2015, Section 5.3.5

Volume Factor, Cv – NDS 2015, Section 5.3.6

Flat Use Factor, Cfu – NDS 2015, Section 5.3.7

Curvature Factor, Cc – NDS 2015, Section 5.3.8

Stress Interaction Factor, CI – NDS 2015, Section 5.3.9

Shear Reduction Factor, Cvr – NDS 2015, Section 5.3.10


Reference Bending Stress, Fb – NDS Supplement 2015

Reference Shear Stress Parallel to grain, Fv – NDS Supplement 2015


Output Parameters

Cross-Sectional Area, A

Section Modulus, S

Actual Bending Stress, fb

Actual Maximum Shear Stress, fv

Allowable Bending Stress, Fb‘ – NDS 2015 Table 5.3.1

Allowable Shear Stress Parallel to Grain, Fv‘ – NDS 2015 Table 5.3.1


Bending Check

Shear Check