§ 15.17. Materials.
(a) Steel. Wherever used, steel shall conform to the standard specifications of the American Institute of Steel Construction, as amended. In addition, load carrying steel members of permanent grandstands for outdoor use, and of portable grandstands, including steel members which may be in contact with the earth may not be less than 1/4 inch thick, except for the following:
(1) The web of rolled structural shapes may be not less than 17/100 inch thick.
(2) The deck plates of a steel-deck grandstand, railings and hot galvanized load carrying members not in contact with the earth, may not be less than 3/16 inch thick.
(3) In foldable and permanent grandstands used entirely indoors the required thickness of steel may be decreased 50%, if in all other respects it complies with the requirements of this chapter, and if the location and usage of a member is such that there is no likelihood of distortion which might affect the safety of the grandstand.
(b) Wood. Each wood structural member shall be well seasoned and of a quality not less than the lowest grade in the respective species, as provided in § 15.18(b) (relating to allowable stresses). The quality of seats may be not less than the lowest grade of finish lumber, and of boarding and sheathing not lower than No. 2 common grade. In specifying wooden parts, the species and grade and the actual finished sizes of the parts shall be given.
(c) Other materials. Other materials, where used, shall be suitable, of uniform quality, and without defects affecting the strength or service of the grandstand.
The provisions of this § 15.17 adopted August 15, 1933; amended through July 1, 1968.
This section cited in 34 Pa. Code § 15.11 (relating to applicability); and 34 Pa. Code § 15.14 (relating to design and workmanship).
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