Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 21 - LADDERS
WOOD CLASSIFICATION
- Section 21.61 - Group one woods
- Section 21.62 - Group two woods
- Section 21.63 - Group three woods
- Section 21.64 - Group four woods
- Section 21.65 - Wood for ladder use
- Section 21.66 - Sapwood
- Section 21.67 - Durability
- Section 21.68 - Density
- Section 21.69 - Names
- Section 21.70 - Strength tests
- Section 21.71 - Soft maple
- Section 21.72 - Pecan species
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