Tuesday, 31 December 2013 Written by Administrator
» Nail A sharp-pointed metal pin used for fastening of wood.
» Nail-base sheathing A sheathing mate- rial, such as wood boards or plywood, to which siding can be attached by nailing, as differentiated from one such as cane fiber board
or plastic foam board that is too soft to hold nails.
» Nail popping The loosening of nails holding gypsum board to a wall, caused by dr ying shrinkage of the studs.
» Nail set A hardened steel punch used to drive the head of a nail to a level flush with or below the surface of the wood.
» National Building Code of Canada (NBCC) The predominant Canadian model building code.
» NBCC See National Building Code of
Canada.
» Near-infrared (NIR) radiation An invis- ible portion of the solar spectrum that accounts for over half of the total heat energy in solar radiation.
» Needle beam A steel or wood beam threaded through a hole in a bearing wall and used to support the wall and its super- imposed loads during underpinning of its
foundation.
» Needling The use of needle beams. Negative-side waterproofing Waterproof- ing applied to the inner side of a wall,
acting to resist water passage from the op-
posite side.
» Neoprene Polychloroprene, a synthetic rubber.
» NIR radiation See Near-infrared radia- tion.
» Noble metal See Passive metal.
» Noise Reduction Coefficient (NRC) An index of the proportion of incident sound that is absorbed by a surface, expressed as a decimal fraction of 1.
» Nominal dimension An approximate di- mension assigned to a piece of material as a convenience in referring to the piece.
» Nonaxial In a direction not parallel to the long axis of a structural member. Nonbearing Not carr ying a load.
» Nonhydraulic cements Cementitious materials, such as gypsum and lime, that remain water soluble after curing. See also Hydraulic cements.
» Nonmovement joint A connection be- tween materials or elements that is not designed to allow for movement.
» Nonworking joint A joint that is not sub- jected to significant deformations.
» Nosing The projecting for ward edge of a stair tread.
» NRC See Noise Reduction Coefficient. Nut A steel fastener with internal heli- cal threads, used to close a bolt.
Last Updated on Wednesday, 08 January 2014 10:37
