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, C_d – NDS 2015, Section 4.3.2

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

Temperature Factor, C_t – NDS 2015, Section 4.3.4

Beam Stability Factor, C_L – NDS 2015, Section 4.3.5

Size Factor, C_F – NDS 2015, Section 4.3.6

Flat Use Factor, C_fu – NDS 2015, Section 4.3.7

Incising Factor, C_i – NDS 2015, Section 4.3.8

Repetitive Member Factor, C_r – NDS 2015, Section 4.3.9

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

Reference Bending Stress, F_b – NDS Supplement 2015

 

Output Parameters

Section Modulus, Sx

Actual Tensile Stress, f_t

Actual Bending Stress, fb

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

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

Allowable Bending Stress with Stability Factor, F_b** – 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