3 Flashcards
slump test
A test for mixed concrete to determine consistency and workability.
sandblasting
The blasting of concrete with sand or another abrasive material to dull the formed surface, make the color uniform, or expose the aggregate.
dead-end corridor
A corridor that is closed at one end, usually limited to 20 feet in length.
flashing
An impervious material used to prevent water penetration at joints formed by different materials or surfaces.
yard lumber
Lumber of all sizes and patterns intended for general building purposes.
control joint
A groove in a concrete structure made to predetermine the location of cracks.
Lewis bolt
A round threaded metal device with a bell-shaped end that is used to anchor stone.
board foot
A unit of measure for lumber equal to the volume of a board 12”x12”x1”.
casting
A method of producing a metal product by pouring molten metal into a mold of the desired shape.
hydrostatic pressure
The pressure exerted by a liquid against every surface it contacts.
electric elevator
An elevator operated by traction, in which steel cables with counterweights raise or lower the elevator car.
needle beam
A short beam passed through a wall to provide temporary support.
post-and-beam system
A simple structural system consisting of beams simply supported on posts.
glass block
A solid or hollow unit of translucent glass used for non-load-bearing walls.
metal
A material characterized by opaqueness, hardness, the ability to conduct heat and electricity, and a distinctive luster when untarnished.
heat-strengthened glass
Glass that has greater resistance to impact, thermal stresses, and wind than annealed glass, but less than that of tempered glass.
membrane
A thin impervious layer of material that prevents water penetration, as in a built-up roof or wall below grade.
elevator car
The load-carrying unit of an elevator, including its platform, frame, enclosure, and door. Also referred to as an elevator cab.
pitch pocket
An opening between growth rings containing pitch or resin.
tactile finish
A knurled or roughened finish applied to operating hardware on doors leading to areas that might be hazardous to visually impaired persons.
tilt-up wall
A reinforced concrete wall that is precast at the job site, usually in a flat position, and later tilted up and set into place.
wet pipe sprinkler
A sprinkler system that is continuously pressurized with water. If a fusible sprinkler opens, water is immediately forced through the sprinkler head.
waterproof
Impervious to water or water vapor, even under pressure.
wood defect
A natural or manufacturing imperfection in wood that may affect its strength, appearance, use, or grading. Included are knot, pitch pocket, shake, check, split, and wane.
