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Decoding Lumber ID Stamps

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Lumber explained 👍 #framing #carpentry #learn #build

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What happens here

This step focuses on interpreting the stamps found on lumber. The presenter uses a diagram to explain each element. 'SPIB' refers to the Grading Authority. 'No. 2' indicates the grade of the lumber, which typically ranges from 'SS' (Structural Select) down to '3'. 'Prime' signifies high quality within its specific grade. 'KD' stands for Kiln Dried, meaning the lumber has been dried to a moisture content of 19% or less. Finally, 'HT' indicates Heat Treated, a process used to treat the wood for pests.

Goal: Understand the information provided on lumber grade stamps.

Tools and materials

  • Diagram on Lumber — Explaining the components of a lumber ID stamp
  • Lumber Piece with Stamp — Visual example of a lumber ID stamp
  • Pointer — Highlighting different parts of the stamp and diagram

What they say

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and 1/4 for these three and these two are halves. Here's a diagram for lumber ID. SPIB is the grading authority. Number two is the grade, which goes from SS all the way down to three. Prime means that it's high quality within this number two grade. KD stands for kiln dried and the moisture was 19% or less. HT is for heat treated and this is to treat for pests that can be inside of the wood. Lumber grade goes from SS all the way to three. Number two is what

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