Structural Engineering Calculator to Analyze Wood / Lumber Members in Tension + Bending per NDS 2015

May 1, 2018 Abdul Siraj, P.E.

Calculator Description

This online engineering calculator computes the actual tensile and bending stresses and allowable tensile and bending stresses for a wood sawn lumber member in tension + bending according to the National Design Specification for Wood Construction 2015 (NDS 2015)

Calculator Link

https://www.engineeringexamples.net/engineering-calculator-for-analysis-of-wood-sawn-lumber-member-in-tension-plus-bending-per-nds-2015/

Input Parameters

Tensile Force, P

Bending Moment, M

Member Width, b

Member Depth, d

Net Cross-Sectional Area, An

Load Duration Factor, Cd – NDS 2015, Section 4.3.2

Wet Service Condition Factor, Cm – NDS 2015, Section 4.3.3

Temperature Factor, Ct – NDS 2015, Section 4.3.4

Beam Stability Factor, CL – NDS 2015, Section 4.3.5

Size Factor, CF – NDS 2015, Section 4.3.6

Flat Use Factor, Cfu – NDS 2015, Section 4.3.7

Incising Factor, Ci – NDS 2015, Section 4.3.8

Repetitive Member Factor, Cr – NDS 2015, Section 4.3.9

Reference Tension Stress Parallel to Grain, Ft – NDS Supplement 2015

Reference Bending Stress, Fb – NDS Supplement 2015

 

Output Parameters

Section Modulus, Sx

Actual Tensile Stress, ft

Actual Bending Stress, fb

Allowable Tension Stress Parallel to Grain, F’– NDS 2015, Table 4.3.1

Allowable Bending Stress without Stability Factor, Fb* – NDS 2015, Section 3.9.1

Allowable Bending Stress with Stability Factor, Fb** – NDS 2015, Section 3.9.1

Combined Tension and Bending Check – NDS 2015, Equation 3.9-1

Buckling on the Compression Face Check – NDS 2015, Equation 3.9-2