N.M. Code R. § 14.9.4.33
B. Water columns or gauge glasses which are located over ten (10) feet above the floor or a walkway shall be provided with a suitable platform beneath them, which need not be provided with a permanent means of egress.
[1-1-98; 14.9.4.33 NMAC - Rn, 14 NMAC 9.4.33, 08-01-03]