SPF lumber

Also called: dimensional lumber, framing lumber

Standard-size sawn lumber from spruce, pine and fir, sold in sizes such as 2x4. A platform that people will stand or sit on needs the member sizes, support spacing and joint loads checked.

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When you'd need this

I want to build a frame for a platform bench
I need posts for shelving

Measure and check before you buy

Nominal size (2x4, etc.) and actual dimensions
Length
Pressure treated or not
Structural grade
Dryness
Where it will be used (indoors or outdoors)

Safety: Caution: have the load checked for anything people will stand or sit on.

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