Technical Booklet B Materials and Workmanship·Page 14·2.8

Tests and calculations for materials

Where no relevant harmonised European standard exists, tests, calculations, or other means may be used to demonstrate material performance. Testing laboratories accredited by UKAS or equivalent national accreditation bodies provide reliable evidence of material suitability.

Where there is no relevant harmonised European standard, tests, calculation or other means may be used to demonstrate that the material can perform the function for which it is intended. UKAS or an equivalent national accreditation body belonging to the EA may accredit the testing laboratories; this accreditation provides a means of showing that the tests can be relied on.

Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/Technical Booklet B - Materials and Workmanship.pdf