C2 Resistance To Moisture

1834 Words8 Pages
C2 Resistance to Moisture Moisture. Water in liquid, solid or gaseous form. The requirements Resistance to moisture The floors, walls and roof of the building shall adequately protect the building and people who use the building from harmful effects caused by: (a) ground moisture; (b) precipitation and wind-driven spray; (c) interstitial and surface condensation; and (d) spillage of water from or associated with sanitary fittings or fixed appliances. In the First Secretary of State’s view the requirements of C2 will be met if the floors, walls and roof are constructed to protect the building and secure the health and safety of persons in and about the building from harmful effects caused by: moisture emanating from the ground or from groundwater; precipitation and wind-driven spray; interstitial and surface condensation; and spillage of water from or associated with sanitary fittings and fixed appliances. Moisture can rise from the ground to damage floors and the base of walls on any site, although much more severe problems can arise in sites that are liable to flooding. Driving rain or wind- driven spray from the sea or other water bodies adjacent to the building can penetrate walls or roofs directly, or through cracks or joints between elements, and damage the structure or internal fittings or equipment. Surface condensation from the water vapour generated within the building can cause moulds to grow which pose a health hazard to occupants. Interstitial condensation may cause damage to the structure. Spills and leaks of water, in rooms where sanitary fittings or fixed appliances that use water are installed (e.g. bathrooms and kitchens), may cause damage to floor decking or other parts of the structure. Any ground supported floor will meet the requirement if the ground is covered with dense concrete laid on a hardcore bed and a

More about C2 Resistance To Moisture

Open Document