§ 171.57. Insulation.
The requirements for the use of insulation are as follows:
(1) Ceiling and walls shall be insulated with fire resistant material of a type approved by the Underwriters Laboratories, Inc. Standard 723. See Appendex A.
(2) If floor insulation is used it shall be 5-ply, 5/8-inches thick or it shall equal or exceed properties of exterior type softwood plywood, C-D Grade as specified in Standard PS1-83 issued by the United States Department of Commerce. See Appendix A.
The provisions of this § 171.57 amended under the Vehicle Code, 75 Pa.C.S. § § 4103, 45514553 and 6103.
The provisions of this § 171.57 adopted August 19, 1983, effective August 20, 1983, 13 Pa.B. 2561; readopted December 4, 1987, effective December 5, 1987, 17 Pa.B. 5052; amended September 13, 1996, effective September 14, 1996, 26 Pa.B. 4411. Immediately preceding text appears at serial page (140082).
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