2022: ☢️ Specific Gravity of Timber (& Formula, Definition, Infographic)

Definition

The specific gravity of timber is the ratio of the density of timber to that of a reference substance (Usually water).

This information can be used to tell whether timber will float (or sink) if dropped in water (Buoyancy).

Formula

SG = ρtimber / ρwater

Note: Both densities need to be in the same unit as they will cancel each other and produce SG.

Specific Gravity vs Density vs Specific Weight

There are important differences between density, specific weight and specific gravity. Follow these links to learn about the differences between them.

I will provide you the timber specific gravity in a dimensionless unit (Unitless) in this page. You may check how it converts to kg/m³ (SI unit), g/cm³, g/ml, kg/l, lb/ft³ by following the link below:

Specific Gravity of Timber (Relative to Water)

It does vary a lot depending on the wood its made from. But here is an average:

SG = 0.7

Specific gravity values are not very useful. Why not check the density of timber (all units)?

My Specific Gravity Infographic

Put the timber specific gravity in perspective!

How about an incentive to share this post? (You will help other colleagues find this blog)

Download and enjoy my infographic:

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