Stairs in product handling departments shall be constructed with solid treads and closed risers and shall have side curbs of similar material, which shall be 6 inches high as measured at the front edge of the tread.
7 Pa. Code § 37.56
Stairs in product handling departments shall be constructed with solid treads and closed risers and shall have side curbs of similar material, which shall be 6 inches high as measured at the front edge of the tread.
7 Pa. Code § 37.56