Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 21 - LADDERS
WOOD CLASSIFICATION
Section 21.70 - Strength tests
Universal Citation: 34 PA Code ยง 21.70
Current through Register Vol. 54, No. 38, September 21, 2024
The following species are commonly associated with others of the same genus under the American Lumber Standards nomenclature but no strength tests have been made on them at Forest Products Laboratory:
| Birch | Nigra. |
| Hickory | Ovalisi. |
| Red oak | Quercus borealis maxima, shumardii, texana, palustris, rubra pagodaefolia, ellipsoidalis, coccinea, marilandica, kelloggii, and catesbaei. |
| White oak | Lyrata, muehlenbergii, garryana, lobata, virginana, douglasii, utahensis, emozyi, arizonica, and oblongifolia. |
| Pecan | Cordi formis elongata, myristicaeformis, and aquatica. |
| Red alder | Rhombifolia. |
| Hackberry | Laevigata. |
| Basswood | Heterophylla. |
| Buckeye | Glabra. |
| Chestnut | Pumila. |
| Cottonwood | Deltoides virginiana, heterophylla, and sargentii. Populus trichocarpa, macdougalii, and fremontii. |
| White ash | Pennsylvanica. |
This section cited in 34 Pa. Code § 21.21 (relating to wood side rails).
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