If a weighbridge has 1 or more pits:
(a) each entrance to a pit must be:
(i) covered; and
(ii) at least 1 metre deep; and
(iii) at least 900 mm wide; and
(b) the neck of the pit must be at least 900 mm wide; and
(c) a lever located in the neck of the pit must have a clearance of at least 150 mm on each side of the lever; and
(d) each part of the underwork must be freely accessible; and
(e) if each part of the underwork is freely accessible from above, there must be a clearance of at least 150 mm below each part of the underwork; and
(f) in any other case -- there must be a clearance of at least 400 mm below the lowest lever; and
(g) each pit must be kept free from any accumulation of water, mud or debris; and
(h) each pit must be:
(i) free‑draining; or
(ii) provided with automatic mechanical drainage.