Tuesday, 31 December 2013 Written by Administrator
» Louvers - an opening provided with one or more slanted fixed or movable fins to allow flow of air but to exclude rain or sun or to provide privacy.
» Lockers in High Pressure Laminate - The laminate lockers are applied in the super market, the school, the shower room and bath room. They are available in various color
and models. They are superb in quality and fashionable in design. Our lockers have enjoyed a very good repution in foreign market.
» A cladding joint design inmonly made of rigid polystyrene insulat- ing foam, used as permanent formwork for the casting of concrete walls.
» Insulating glass A glazing unit made up of two or more sheets of glass with an air- space in between.
» Insulating glass unit (IGU) See Insulat- ing glass. Intensive green roof A green roof with relatively deep soil capable of supporting a broad variety of plants and shrubs.
» Labyrinth which a series of interlocking baffles pre- vents drops of water from penetrating the joint by momentum.
» Lacquer A coating that dries extremely quickly through evaporation of a volatile solvent.
Lagging Planks placed between sol- dier beams to retain earth around an excavation.
» Lag screw A large-diameter wood screw with a square or hexagonal head.Laminate As a verb, to bond together in layers; as a noun, a material produced by bonding together
layers of material.
Laminated glass A glazing material con- sisting of outer layers of glass laminated to an inner layer of transparent plastic.
» Laminated strand lumber (LSL) Wood members made up of long shreds of wood fiber joined with a binder.
» Laminated veneer lumber (LVL) Struc- tural composite lumber made up of thin wood veneers joined with glue.
» Laminated wood See Glue-laminated wood.
» Landing A platform in or at either end of a stair.
» Lap joint A connection in which one piece of material is placed partially over another piece before the two are fastened together.
» Lateral force A force acting generally in a horizontal direction, such as wind, earthquake, or soil pressure against a foundation wall.
» Lateral thrust The horizontal compo- nent of the force produced by an arch, dome, vault, or rigid frame.
» Latewood See Summerwood.
» Latex caulk A low-range sealant based on a synthetic latex.
» Latex/polymer modified portland ce- ment mortar A tile setting mortar simi- lar to dr y-set mortar, but with additives that improve the cured mortar's freeze-thaw resistance,
flexibility, and adhesion; used for thin-set tile applications.
» Lath (rhymes with "math") A base mate- rial to which plaster is applied.
» Lathe (rhymes with "bathe") A machine in which a piece of material is rotated against a sharp cutting tool to produce a shape, all of whose cross sections are cir- cles; a
machine in which a log is rotated against a long knife to peel a continuous sheet of veneer.
» Lather (rhymes with "rather") One who applies lath.
» Lay-in panel A finish ceiling panel that is installed merely by lowering it onto the top of the metal grid components of the ceiling.
» Lead (rhymes with "bed") A soft, easily formed nonferrous metal, dull gray in color.
Lead (rhymes with "bead") In masonr y work, a corner or wall end accurately
constructed with the aid of a spirit level to ser ve as a guide for placing the bricks in the remainder
of the wall.
» Leader (rhymes with "feeder") See
Downspout.
Leaf The moving portion of a door. Lean construction Methods of construc- tion and its management that emphasize
efficiency, elimination of waste, and con-
tinuous
improvement in quality.
» Ledger A horizontal wood member fas- tened to a wall or beam to which the ends of joists may be connected.
» Lehr A chamber in which glass is an- nealed.
Let-in bracing Diagonal bracing that is nailed into notches cut in the face of the studs so as not to increase the thickness of the wall.
» Level cut A saw cut that produces a level surface in a sloping rafter when the rafter is in its final position. See also Plumb cut.
» Leveling plate A steel plate placed in grout on top of a concrete foundation to create a level bearing surface for the lower end of a steel column.
» Lewis A device for lifting a block of stone by means of friction exerted against the sides of a hole drilled in the top of the block.
» Life-cycle cost A cost that takes into account both the first cost and the costs of maintenance, replacement, fuel con- sumed, monetar y inflation, and interest over the life of the
object being evalu- ated.
» Lift-slab construction A method of building multistor y sitecast concrete buildings by casting all the slabs in a stack on the ground, then lifting them up the columns with jacks
and welding them in place.
» Light A sheet of glass, also spelled
"lite."
Light gauge steel stud A length of thin sheet metal formed into a stiff shape and used as a wall framing member.
Light to solar gain (LSG) ratio The vis- ible light transmittance of a glazing unit divided by the solar heat gain coefficient, a measure of the energy-conser ving po- tential of the
unit.
Lightweight aggregate Low-density ag- gregate used to make lightweight con- crete, mortar, and plaster; in concrete, aggregate with a density of less than 70 lb/ft3 (1120
kg/m3).
Lignin The natural cementing sub- stance that binds together the cellulose in wood.
» Lime A nonhydraulic cementitious material, used as an ingredient in mor- tars and plasters. See also Hydrated lime, Quicklime.
» Lime mortar Masonr y mortar made from a mix of lime, sand, and water; used principally in the restoration of historic structures.
» Lime putty See Finish lime.
» Limestone A sedimentar y rock consist- ing of calcium carbonate, magnesium carbonate, or both.
» Linear metal ceiling A finish ceiling whose exposed face is made up of long, parallel elements of sheet metal.
» Liner A piece of marble doweled and cemented to the back of another sheet of marble.
» Line wire Wire stretched across wall studs as a base for the application of met- al mesh and stucco.
» Linoleum A resilient floor covering material composed primarily of ground cork and linseed oil on a burlap or canvas backing.
» Lintel A beam that carries the load of a wall across a window or door opening. Liquid sealant Gunnable sealant.
» Lite See Light.
Live load Nonpermanent loads on a building caused by the weights of peo- ple, furnishings, machines, vehicles, and goods in or on the building.
» Load A weight or force acting on a structure.
Loadbearing Supporting a superim- posed weight or force.
» Loadbearing wall See Bearing wall.
» Load indicator washer A disk placed under the head or nut of a high-strength bolt to indicate sufficient tensioning of the bolt by means of the deformation of ridges on the
surface of the disk; also called a direct tension indicator washer.
» Lockpin and collar fastener A boltlike device that is passed through holes in struc- tural steel components, held in ver y high tension, and closed with a steel ring that is
squeezed onto its protruding shank.
» Lockstrip gasket A synthetic rubber strip compressed around the edge of a piece of glass or a wall panel by inserting a spline (lockstrip) into a groove in the strip.Longitudinal
shrinkage In wood, shrink- age along the length of the log.
» Lookout A short rafter, running perpen- dicular to the other rafters in the roof, which supports a rake overhang.
» Louver A construction of numerous sloping, closely spaced slats used to dif- fuse air or to prevent the entr y of rainwa- ter into a ventilating opening.
» Low-e coating See Low-emissivity coat- ing.
» Low-emissivity coating A surface coat- ing for glass that selectively reflects solar radiation of different wavelengths so as to permit high visible light transmittance while
reflecting some or all types of infra- red (heat) radiation.
» Low-lift grouting A method of con- structing a reinforced masonr y wall in which the reinforcing bars are embedded in grout in increments not higher than
4 feet (1200 mm).
» Low-range sealant A sealant that is capa- ble of only a slight degree of elongation prior to rupture; a caulk.
» Low-slope roof A roof that is pitched so near to horizontal that it must be made waterproof with a continuous membrane rather than shingles; com- monly and inaccurately
referred to as a "flat roof." In the International Build- ing Code, a roof with a slope of less than
2:12 (17 percent).
» LSG See Light to solar gain ratio. LSL See Laminated strand lumber. Luffing-boom crane A heavy-duty lifting
device that uses a tower-mounted boom
that may rotate in any
vertical plane as well as in a horizontal plane.
» LVL See Laminated veneer lumber.
Last Updated on Wednesday, 22 January 2014 07:24
