8 Flashcards
lock rail
An intermediate horizontal member of a door or window frame that can accommodate a lock.
dampproofing
The materials and methods used to prevent moisture from penetrating a building at or below grade.
vertical-grained lumber
Lumber with rings at 45 degrees to 90 degrees with the wide face. Also called edge-grained lumber.
backset
The distance from the edge of a door to the center of the knob or lock cylinder.
friable
Soil that is easily crumbled or reduced to powder.
rabbet
A groove cut into a member to receive another member.
aluminum
A silvery-white metal obtained from bauxite clay by the electrolytic process. Its properties include light weight, good heat and electrical conductivity, and resistance to corrosion after forming a protective oxide coating.
sidewalk elevator
A freight elevator that rises to or directly on the sidewalk level by opening hatch doors in the ground floor.
preservative
A substance that inhibits the development and action of fungi, borers, and insects that deteriorate wood.
zinc
A low-strength metal that is highly resistant to corrosion and therefore used for protective coatings on steel, such as galvanizing.
ASTM
American Society for Testing and Methods
stile
The upright or vertical edge of a door or window.
sliding door
A door that moves horizontally, either on a track in the floor or from rollers at the head.
reglet
A slot in which roofing material or flashing is inserted, generally in a vertical wall surface.
mastic
A permanently plastic waterproof adhesive material used in sealing joints.
Unified Soil Classification System
The most widely used system for classifying soils. In this system, the soils are primarily classed as coarse-grained (gravels and sands), fine-grained (silts and clays), and highly organic.
California bearing ratio (CBR)
A ratio used to determine the bearing capacity of a soil, based on a standard test.
pith
The heart center of a log.
parging
The application of plaster to the back of masonry walls.
K-value
The thermal conductivity of a material.
varnish
A clear coating consisting of resins dissolved in a volatile liquid. Varnish produces a hard, smooth, and glossy protective film.
ram
The driving device of a hydraulic elevator, which is powered by liquid under pressure within a cylinder. Also referred to as a plunger.
sheeting
Vertical members used to temporarily hold the face of an excavation during construction.
safety glass
Laminated glass, consisting of a thin sheet of transparent plastic laminated between two layers of clear glass. Also referred to as shatterproof glass.
cribbing
A cellular framework that is filled with rock or soil to retain an earth embankment.
elastomeric flooring
Synthetic resins applied in liquid form, producing a durable, seamless floor surface.
perm
The unit or permeability for a given material, expressing the resistance of the material to the penetration of moisture. One perm is equal to the flow of one grain of water vapor through one square foot of surface area per hour with a pressure difference of one inch of mercury.
sound transmission class (STC)
A single-number rating for the evaluation of a particular cross-section in terms of it’s transmission of airborne sound. The higher the STC rating, the more effective the construction is at stopping airborne sound.
check
A lengthwise separation of wood caused by nonuniform seasoning.
selective-collective
An elevator operating system in which all calls are answered in the direction of a car’s travel, and calls in the opposite direction are ignored until the travel direction is reversed.
terne plate
Steel coated with lead and tin, used for roofing and flashing.
bronze
An alloy of copper and tin.
base shoe
A quarter round trim piece used to cover the joint between the finish flooring and the base.
carriage
An inclined timber beam that supports the steps of a wooden stairway.
annealed glass
Ordinary window glass that has been cooled slowly to avoid locked in thermal stresses.
bond
An arrangement of the elements of a masonry wall to provide strength by lapping the units. Also refers to the pattern formed by the exposed faces of the units.
anodizing
A process of coating aluminum with a hard oxide film by electrolytic action to prevent corrosion and improve appearance.
sand
Granular material, ranging from about 3/8” to 1/200”.
vehicle
The liquid portion of a paint that holds the pigment of solids in suspension.
rim lock
A lock mounted on the face of a door.
sash
A frame in which the panes of a window or door are placed.
sheave
A pulley wheel for hoisting that has a grooved rim to accommodate a wire cable.
unit lock
A preassembled lock that is installed quickly and efficiently in a rectangular notch cut in the door edge.
head joint
The vertical mortar joint between ends of masonry units.
edge-grained lumber
Lumber with rings at 45 degrees to 90 degrees with the wide face. Also called vertical-grained lumber.
smelting
Extracting metal from it’s ore.
dado
A rectangular grooved wood joint. Also, the lower part of a wall below a molding or other trim.
heat-absorbing glass
Tinted glass that absorbs a high percentage of solar radiation. Also referred to as actinic glass.
Atterberg limits
The arbitrary limits which define the boundaries between the different states of rigidity or fluidity of fine-grained soils.
