Regulation 17 Preparation of sites and resistance to moisture
(1)
Subject to paragraph (2), a building shall be so constructed as to protect the building and its users from harmful effects caused by –
(a)
moisture rising from the ground; and
(b)
precipitation.
(2)
This regulation shall not apply to a building where penetration of moisture from outside will result in effects no more harmful than those likely to arise from use of the building.