WOOD CLASSIFICATION
§ 21.61. Group one woods.
The following woods may not be more than 10% smaller than spruce in each cross section dimension
White ash Fraxinus americana, biltmoreana, pennsylvanica lanceolata, pennsylvanica, quadrangulata. Beech Fagus grandifolia. Birch Betula lenta, lutea, nigra. Douglas fir (dense) Pseudotsuga taxifolia. Rock elm Ulmus racemosa. Hickory Hicoria ovata, laciniosa, alba, glabra, ovalisi. Ironwood Ostrya virginiana. Black locust Robinia pseudacacia. Honey locust Gleditsia triacanthos. Hard maple Acer nigrum, saccharum. Red maple Acer rubrum. Red oak Quercus borealis maxima, borealis, velutina, shumardii texana, palustris, phellos, laurifolia, rubra, rubra pagodaefolia, nigra, ellipsoidalis, coccinea, marilandica, kelloggii, catesbaei. White oak Quercus alba, stellata, lyrata, bicolor, muehlenbergii, garryana, prinus, montana, macrocarpa, lobata, virginiana, douglasii, utahensis, emoryi, arizonica, oblongifolia. Osage orange Toxylon pomiferum. Pecan Hicoria pecan, cordiformis, cordiformis elongata, myristicaeformis, aquatica. Persimmon Diospyros virginiana. Southern pine (dense) Pinus taeda, palustris, serotina, echinata caribaea, rigida, glabra.
Cross References This section cited in 34 Pa. Code § 21.21 (relating to wood side rails); 34 Pa. Code § 21.23 (relating to wood steps); 34 Pa. Code § 21.31 (relating to general); and 34 Pa. Code § 21.65 (relating to wood for ladder use).
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