9 Flashcards
monel
An alloy of nickel and copper that is resistant to corrosion and used for roofing, kitchen equipment, and so on.
buffer
A device located at the bottom of an elevator hoistway, used to stop a cab’s over travel at low speed, not to stop a free-falling cab. Also referred to as car bumpers.
gypsum block
A solid or cored unit manufactured from gypsum plaster and used for interior, non-load-bearing partitions and for fire protection.
casement
A window attached to a frame by hinges on which the entire unit swings open.
Proctor Test
A laboratory compaction test to determine the optimum moisture content and density for a soil.
lacquer
A protective glossy coating consisting of resins dissolved in a volatile solvent. It dries quickly to a tough, durable finish.
calcium chloride
The most common accelerating admixture used for concrete. It can be used safely in amounts up to 2% of the Portland cement weight.
flat-grained lumber
Lumber with rings 0 degrees to 45 degrees with the wide face. Also called slash-grained lumber.
ceramic veneer
Terra-cotta facing applied as a finish wall material.
acrylic
A noncrystalline thermoplastic with good weather resistance, shatter resistance, and optical clarity; sometimes used for glazing.
plaster ground
A wood strip, metal bead, or screed used to gauge the thickness of plaster.
gypsum
Hydrated calcium sulfate, from which gypsum plaster and plasterboard are made.
plasterboard
Prefabricated, paper-covered sheets having a gypsum core, used for covering interior walls and ceilings or as a base for interior plaster.
Keene’s cement
A quick-setting gypsum plaster used in areas exposed to moisture.
test pit
An excavation made to expose the subsurface soils for in-place examination.
balustrade
A complete railing system, consisting of a top rail, supporting balusters, and sometimes a bottom rail.
plaster
A mixture of Portland cement (exterior plaster) or gypsum (interior plaster) with sand and water, which is applied in layers, or coats.
stainless steel
An alloy steel generally containing more than 10% chromium, in addition to smaller amounts of other elements, such as nickel and manganese. It is resistant to heat, oxidation, corrosion, and acid attack.
condensation
The process by which water vapor (humidity) within a space changes into liquid.
grade NW (no weather)
A grade of brick used where no weather resistance is required.
vitrification
The fusion of a clay product after firing, which makes it impervious.
structural clay tile
Hollow, burned-clay masonry units with parallel cells.
actinic glass
Tinted glass that absorbs a high percentage of solar radiation. Also referred to as heat-absorbing glass.
cast iron
Iron with a relatively high carbon content (over 2%). It is hard, brittle, easily cast into molds, and has a high compressive but low tensile strength.
stretcher
A brick laid with its length parallel to the length of the wall.
weathering steel
Steel that aquires a brownish protective oxide coating when exposed to the weather and therefore requires no paint finish. It is sold under the proprietary names “Cor-Ten Steel” and “Mayari R Weathering Steel”.
asphaltic concrete
A mixture of asphaltic cement and aggregates, used as a paving material, which is spread and rolled while hot.
trowel finish
A smooth, dense concrete surface, produced by steel troweling after the concrete has partially hardened.
stucco
A mixture of sand, Portland cement, lime, and water, which may be tinted and applied as an exterior plaster finish.
perlite
A lightweight volcanic rock used as an aggregate in lightweight concrete or plaster.
resilient flooring
A thin, durable floor covering, manufactured in tile or sheet form, such as vinyl, cork, linoleum, and so on.
common brick
Brick used for general building construction and that has not been treated for texture or color.
caisson
A waterproof box-like enclosure in which construction work can be performed underwater. Also a pile constructed by pouring concrete into a drilled shaft.
urethane
A synthetic resin from which paints and insulation foams are manufactured.
glass
A hard, brittle, ceramic material made from sand, soda, and lime. It is generally transparent, and it is shaped in a variety of ways, in a liquid state at high temperatures.
putty coat
The final smooth coat of interior plaster.
Btu
The abbreviation for British thermal unit, a unit of heat energy, which is defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.
R factor
A measure of thermal resistance.
cylinder lock
A door lock having the locking mechanism within a cylinder.
grout
A high slump concrete, consisting of Portland cement, sand, hydrated lime, water, and sometimes pea gravel.
toughness
A metal’s ability to withstand shock or impact.
galvanizing
The process of applying a coating of zinc to iron for protection against corrosion.
slash-grained lumber
Lumber with rings 0 degrees to 45 degrees with the wide face. Also called flat-grained lumber.
flood coat
In a built-up composition roof, the top layer of bituminous material, which is poured on the surface and covered with an aggregate coating.
terrazzo
Flooring material made from small chips of marble set in cement and polished.
bonding plaster
A gypsum plaster mixture containing lime, which is used on interior concrete surfaces.
clay
A fine-grained, cohesive, inorganic soil.
compression zipper gasket
A prefabricated strip of molded or extruded material used in a dry glazing process. Also referred to as a glazing gasket.
epoxy
A synthetic resin having excellent adhesive properties.
