Trade Terms Flashcards
the height of the floor after it is finished with its final covering
AFF (above floor finish)
Carry air conditioned or heated air to all rooms. They are made of sheet metal usually. Two shapes of ducts commonly used for carrying air are round and square duct. The round duct is more efficient based on volume of air handled. That is, less duct material is needed to make a large enough duct to carry the necessary air. Round ducts create the least resistance to air flow. Ducts should be insulated everywhere to prevent air from escaping through seams, cracks and holes. Use caulking, soldering or cover with asbestos free Insulating tape. Paper fiber ducts should not be used when ducts are embedded in concrete.
Air Duct
Minerals such as sand, gravel, and crushed stone. Divided into many sizes – fine - coarse, when added to cement and water produces concrete. Sand is considered a fine aggregate and stone or gravel a coarse aggregate
Aggregate
used for lintels or headers over a door or window which supports masonry over the openings. A piece of iron that forms a right angle and is used to span openings and support masonry at the openings. In brick veneer they are used to secure the veneer to the foundation.
Angle Iron
A mineral insoluble in water and used extensively in building for waterproofing roof coverings and roads.
Asphalt
A type of composition shingles made of felt saturated with asphalt and surfaced with mineral granules.
Asphalt Shingles
Self powered excavation equipment that digs by pulling a boom mounted bucket towards itself. It is used to dig basements and/or footings and to install drainage or sewer systems. When digging a trench deeper than 7 1/2 ft. use crossings with standard guardrails and toe boards beforehand.
Backhoe
The flow of liquids through irrigation into the pipes of a potable or drinking water supply from any source which is opposite to the intended direction of flow.
Backflow
A device or means to prevent backflow into the potable water supply.
Backflow Preventer
On the side of a door where the lock goes there is one side higher than the other [high edge]. Measuring from the high edge to the center of the lock is the “back set” 2 3/8” in residential and 2 ¾” in commercial
Backset
classified as to ingredients and identified as NEAT, WOOD-FIBERED, READY-MIXED and BOND plasters. Plasters used for scratch and brown coats.
Base Coats
Any large piece of timber, stone, iron, or other structural material used to support a load over an opening or from post to post.
Beam
A fixed point usually taken from the finished floor elevation sprayed in orange/yellow paint on walls at job site. It is usually set at 5’ and is used as a level reference line.
Bench Mark
Bevel of a door is the angle of the front edge of the door, or an angle cut on any piece of material.
Bevel
The equivalent of a board 1 foot square and 1 inch thick
Board Foot
Ties & rods or structural members used for supporting and strengthening various parts of a building. Used for lateral stability for columns and beams.
Bracing
The coat of plaster directly beneath the finish coat. In three-coat work, the brown is the second coat. Allow 7 days drying period.
Brown Coat
British thermal unit - The amount of heat energy required to raise the temperature of one pound of water through a change of one degree F
BTU
brick for building purposes not especially treated for texture or color, formerly called “common brick” It is stronger than face brick.
Building Brick
