2 Flashcards
impact hammer test
A nondestructive test to determine the strength of hardened concrete, by measuring the rebound of a plunger after striking the concrete surface. This test is not accurate enough to be a substitute for standard compression tests.
rail
A horizontal frame member of a door or window.
camber
A curve built into a structural member to compensate for deflection.
rubble masonry
Masonry composed of rough broken stones.
nonferrous metal
A metal containing no iron, such as aluminum, copper, or lead.
vertical conveyor
A motor-driven device used to distribute a continuous flow of materials throughout multistory buildings.
delamination
The separation of laminations of a glued laminated beam caused by a failure of the adhesive.
quoin
A cornerstone used at the exterior angles of a building to visually indicate strength.
friction pile
A pile whose load is supported by friction between the pile surface and the surrounding soil.
tremie
A pipe used for placing concrete under water. A hopper for filling is provided at the top, while the lower end is kept submerged in the fresh concrete.
closer
A device which attaches to a door to automatically close the door safely, quietly, and at a controlled speed.
honeycomb
A void left in concrete that is poorly mixed or placed.
concrete
A mixture of fine and coarse aggregates, Portland cement, and water.
spread footing
A foundation that spreads the load over a large area of soil. It is also called a footing.
firestops
Horizontal blocks placed between studs to resist the spread of fire.
vibration
Consolidating freshly poured concrete by using an oscillating vibrator. Immersion-type (spud) vibrators are lowered into the concrete, while form vibrators are attached to the exterior of forms.
governor
A device that measures and limits the speed of an elevator using the control panel.
downspout
A vertical pipe used to conduct roof water to the ground. Also called a leader.
head
The upper horizontal member, extending between jams, which forms the top of a door or window frame.
dumbwaiter
A hoisting and lowering device used to vertically transport materials or supplies, but not people.
screed
A strip of material placed at intervals along a wall to be plastered to gauge the thickness of the plaster. Also, a strip used to strike off excess concrete to bring the surface to the proper grade.
shingles
Thin standardized units of wood, slate, tile, asphaltic material, and so on, which are laid in overlapping rows to cover roofs or walls.
gunite
Pneumatically applied concrete shot into place by means of compressed air. This method may be used for both repair work and new construction, especially in difficult locations or where thin sections occur.
type X
A type of gypsum lathing board or gypsum wallboard that is fire retardant.
moving ramp
A continuously-moving, power-driven device that transports passengers up an inclined plane horizontally (moving sidewalk). Moving ramps have continuous tread, rather than the individual steps of an escalator.
portland cement
The finely ground material used as the binder for structural concrete.
value engineering
The systematic review of a project design to obtain the best value for the money spent, considering first costs, operating costs, and replacement costs.
muntin
A short, vertical member within a window frame, either vertical or horizontal.
louver
An assembly of sloping, overlapping slats, fixed or adjustable, which excludes rain but admits air and/or light.
modular bricks
Bricks with dimensions such that one or more brick courses plus the mortar joints produce courses with an exact dimension, which is usually a multiple of 4 inches.
soil boring log
A log showing the types of soil encountered in a test boring and other relevant information.
dead bolt
A locking device which is rectangular in a cross-section and projected manually.
stud wall
A wall consisting of small, closely spaced members usually sheathed on both faces with a wall material.
architectural appearance grade
The appearance grade used for glue laminated members where appearance is an important requirement.
admixture
A prepared substance added to concrete to alter or achieve certain characteristics.
pane
A piece of glass used to glaze a division of a window or door.
light
A pane of glass, a window, or any subdivision of a window.
mortise lock
A lock installed in a rectangular opening cut in the door, rather than on the doors surface.
panic hardware
A door-latching assembly that will open the door if subjected to pressure.
winder
A step in a spiral stairway that is wedge-shaped, with its tread wider at one end than the other.
soffit
The exposed underside of an architectural element, such as a beam or arch.
forms
The molds into which concrete is placed until it hardens.
fiber saturation point
The moisture content (about 30%) above which there is no shrinkage or swelling of wood with variation in moisture content.
reverberation
The persistence of sound in an enclosed space after the source has stopped.
cricket
A flashing saddle used on a sloping roof to divert water around a chimney.
stop
The trim applied to the inside face of a door or window frame against which the door or window closes.
escalator
A continuously moving, power-driven mechanical device that transports passengers along an incline from one floor to another. Also referred to as a moving stairway.
gypsum lath
A base for plaster consisting of a gypsum core sandwiched between two sheets of heavy, porous paper.
accelerator
A substance, such as calcium chloride, added to a concrete mix to speed up its setting and strength development.
