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/C478M-22 standard for load carrying capacity and pull-out resistance, available as noted in Appendix B;
- (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.
Source. (See Revision Note at chapter heading for Env-Wq 700) #8590, eff 3-25-06; ss by #10693, eff 10-15-14; ss by #14258, eff 7-1-25, EXPIRES: 7-1-35