4.—(1) The base of the silo must be—E+W
(a)designed in accordance with the code of practice for design of concrete structures for retaining aqueous liquids published by the British Standards Institution and numbered BS 8007: 1987(1), or
(b)constructed using appropriate hot-rolled asphalt in accordance with the code of practice for selection and use of construction materials published by the British Standards Institution and numbered BS 5502: Part 21: 1990(2).
(2) The base of the silo, the base and walls of its effluent tank and channels and walls of any pipes must be impermeable.
Commencement Information
I1Sch. 5 para. 4 in force at 1.4.2021, see reg. 1(3)
Publication date: 30 October 1987. ISBN 0-580-16134-X.
Publication date: 31 December 1990. ISBN 0-580-18348-3.