What do the Law and Building Regulations have to say?
Builders are required under the Building Control Acts 1991/2007 to make sure that construction materials should be of a suitable nature and quality in relation to the purpose and conditions of their use.
Best building practice now requires that all hardcore materials requiring high compaction within confined areas should be chemically analysed to check if such materials contain any chemicals or metals that may render this material unsuitable for the purpose intended.
It is recommended that:
- The developer shall satisfy himself of the suitability of the ground conditions for the purpose of supporting the development, by carrying out necessary site investigations including chemical analysis of soils to ensure that there are no harmful contaminants or hazards, which could cause deterioration of any element of the development.
- Hardcore materials used in backfill, excavations, floors, road bases etc should be certified by a competent laboratory that they are of a suitable nature and quality in relation to the purpose and conditions of their use. They should be chemically analyzed to check if such materials contain any chemicals, that may give rise to construction damage in the future.
- The primary responsibility for observing Building Control Acts 1991/2007 falls on the persons who actually design and construct buildings and on the owners of buildings, who normally start this process.