## Calculator Description

This online engineering calculator computes the actual tensile stress and allowable tensile stress for a wood / lumber member in tension according to the National Design Specification for Wood Construction

## Calculator Link

## Input Parameters

Member Width, b

Member Depth, d

Number of Bolt Holes, n

Bolt Hole Diameter, d_{h}

Tensile Force, P

Load Duration Factor, C_{d}

Wet Service Condition Factor, C_{m}

Temperature Factor, C_{t}

Size Factor, C_{F}

Incising Factor, C_{i}

Reference Tension Stress Parallel to Grain, F_{t}

## Output Parameters

Net Cross Sectional Area, A_{n}

Actual Tensile Stress, f_{t}

Allowable Tension Stress Parallel to Grain, F’_{t}

Final Check

## Reference Formulas

An = b*(d-n*d_{h})

ft = P / A_{n}

F’t = Ft*C_{d}*C_{m}*C_{t}*C_{F}*C_{i}