(1) Empirically constructed brick non-bearing retaining walls shall conform to the dimensions and be subject to the conditions prescribed in subsections (2) to (9).

(2) No superimposed loads, except pedestrian traffic shall be permitted behind the retaining wall within a distance equal to the height of the wall.

(3) No structure shall be erected on such wall except framed or wired fences no covered with sheeting and not exceeding 1,4 metres in height.

(4) The upper surface of the fill behind such a wall shall be approximately level.

(5) Expansion joints shall be provided in such retaining-walls at distances apart not exceeding 24 metres , and where piers are provided, expansion joints shall bisect piers.

(6) Every such retaining wall shall ne constructed vertical, shall be bonded into or cast integrally with piers which shall be built on the side of such wall remote from the fill and to the full height of such wall:

Provided that, where no details of piers are given in Table XIV, no piers are required.

(7) Every such pier shall have the minimum cross-sectional area set forth in Table XIV.

(8) Every such retaining-wall and its piers, if any, shall be built on a foundation of the minimum dimensions set forth in Table XIV, which foundation shall be constructed of concrete complying with the requirements of section 14.

TABLE XIV
DIMENSIONAL REQUIREMENTS OF EMPIRICALLY CONSTRUCTED NON-BEARING BRICK RETAINING WALLS AND THEIR PIERS AND FOUNDATIONS

(9) the upper surface of such foundation shall be at least 150 millimetres below the adjoining finished ground-level, and neither the retaining-wall nor any associated pier thereof shall overhang such foundation.

(10) Empirically constructed brick retaining-walls which are bearing walls shall comply, mutatis mutandis, with the requirements of section 46.