Section Env-Wq 704.14 - Manholes: Steps Manhole steps shall:
(a) Be permitted only at the request of the system owner;(b) Be manufactured of stainless steel, plastic-covered steel, or plastic;(c) Be shaped so that they cannot be pulled out of the concrete wall into which they are secured;(d) Be certified by the manufacturer as meeting the ASTM C478 standard in effect at the time the manholes were manufactured for load carrying capacity and pull-out resistance;(e) Not be secured with mortar;(f) Be approximately 14 inches by 10 inches in dimension;(g) Have a drop section or raised abutments to prevent sideways slippage off the step; and(h) Have non-skid safety serrations on the foot contact surfaces.N.H. Admin. Code § Env-Wq 704.14
Adopted byVolume XXXIV Number 46, Filed November 13, 2014, Proposed by #10693, Effective 10/15/2014, Expires10/15/2024.