§ 21.70. Strength tests.

 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.

Cross References

   This section cited in 34 Pa. Code §  21.21 (relating to wood side rails).

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