United Kingdom · answered by Verika · verified against sources
What are the requirements for site preparation and resistance to moisture?
"In the First Secr etary of State’s view the requirements of C1 will be met by making reasonable provisions to secure the health and safety of persons in and about the building, and by safeguarding them and buildings against adverse effects of: a. unsuitable material including vegetable matter , topsoil and pre-existing foundations; b. contaminants on or in the gr ound covered, or to be covered, by the building and any land associated with the building; and c. groundwater." [2]
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