Diamond (Ashton Joint Venture) Security Regulations 1982

heavy gauge chain link mesh (mesh size not to exceed 5 cm) to a minimum height of 1.8 m above the actual ground level outside the fence; and

a barbed wire extension extending outwards above the chain link mesh at an angle of between 35° and 45° from the vertical and consisting of 3 strands of barbed wire spaced at intervals of approximately 12.5 cm and fastened to or passed through extensions of the posts supporting the fence.

fixed into a concrete apron that is not less than 15 cm in depth;

secured to pipe framing or to wire strained between the posts supporting the fence; or

held to the ground by u‑shaped stakes placed at intervals of not less than 1.5 m and driven into the ground to a depth of not less than 50 cm.

of tubular steel or galvanized iron pipe secured into a concrete footing to a depth of not less than 50 cm; or

of concrete with a concrete footing that is not less than 50 cm in depth.

masonry or concrete (without foot or hand holds) to a minimum height of 1.8 m above the actual ground level outside the wall; and

a barbed wire extension extending outwards above the masonry or concrete at an angle of between 35° and 45° from the vertical and consisting of 3 strands of barbed wire spaced at intervals of approximately 12.5 cm and fastened to or passed through tubular steel or galvanized iron pipes secured into the wall.