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Concrete Form Construction

Terms in this set (41)

Admixture
Material used in concrete or mortar to produce special qualities.
Aggregate
Materials, such as sand, rock, and gravel, used to make concrete.
Air-entrained cement
Cement that has undergone the process of having tiny air bubbles added to it to increase its resistance to freeze and thaw cycles.
Blockouts
The forms used for providing the larger openings in concrete walls.
Buck
A rough frame used to form openings in concrete walls.
Cleat
A piece of 1" x 5" stock that is installed around the walls of a closet to support the shelf and the rod; also, blocks fastened to the stair carriage to support the treads.
Compressive strength
The quality of being resistant to crushing; concrete has high compressive strength.
Concrete
A building material made from Portland cement, aggregates, and water.
Cove
A concave-shaped molding.
Curing
The process of conditioning concrete to make sure it reaches maximum strength.
Flute
Concave groove in lumber; usually spaced closely for decorative purposes as in a column, post, or pilaster.
Footing
Foundation for a column, wall, or chimney made wider than the object it supports, to distribute the weight over a grater area.
Frost line
The depth to which frost penetrates into the ground in a particular area; footings must be placed below this depth.
Girder
A heavy timber or beam used to support vertical loads.
Gusset plate
A pad of wood or metal used over a joint to stiffen and strengthen it.
Half round
A molding with its end section in the shape of a semicircle.
Hydration
Chemical reaction between cement and water causing concrete to harden and gain strength.
Independent slab
A concrete slab that is separate from the foundation.
Kerf
The width of a cut made with a saw.
Monolithic slab
A combined slab and foundation ; also referred to as a thickened edge slab.
Panel
A large sheet of building material.
Pilaster
Column built within and usually projecting from a wall to reinforce the wall.
Pile
Concrete, metal, or wood pillar forced into the earth or cast in place as a foundation support.
Pitch board
A block of wood that is cut to form a right triangle using the Rise and Run dimensions of the stair.
Portland cement
An improved type of cement that is a fine gray powder.
Quarter round
A type of molding, an end section of which is in the form of a quarter-circle.
Rebar
Steel reinforcing rod used in concrete.
Reinforced concrete
Concrete that has been reinforced with steel bars.
Rise
In stairs, the vertical distance of the step; in roofs, the vertical distance from plate to ridge; may also be the vertical distance through which anything rises.
Run
The horizontal distance over which rafters, stairs, and other like members travel.
Scab
A length of lumber applied over a joint to stiffen and strengthen it.
Screed
Strips of wood, metal, or pipe secured in position and used as guides to level the top surface of concrete.
Slab-on-grade foundation
A solid concrete building base used instead of a foundation because it save on material and labor.
Slump test
A test given to concrete to determine its consistency.
Spreader
A narrow strip of wood tacked to the side jambs of a door frame a few inches up from the bottom so that the frame is the same width at the bottom as it is at the top.
Spud vibrator
An immersion type vibrator with a metal tube on its end that is commonly used to consolidate and vibrate concrete.
Strongback
A member placed on edge and fastened to others to help support them.
Tensile strength
The greatest longitudinal stress a substance can bear without tearing apart.
Waler
Horizontal or vertical members of a concrete form used to brace and stiffen the form and to which ties are fastened.
Waste factor
An amount added to a material order beyond the exact calculation to ensure sufficient material supply for job completion.
Yoking
Applying vertical members (2x4s) that hold outside form corner together.
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