Exam 8: Concrete Form Construction

Slump tests are done to determine the proper mixture of ingredients before placing concrete.

Protect concrete from freezing for a minimum of ____ after being placed by providing insulation or artificial heat, if necessary.

Metric rebars are measured in ____.

In tropical climates, footings must be placed as much as 6 feet below the surface.

The footing width is usually ____ the wall thickness and the footing depth is often equal to the wall thickness.

A rigid foam forming system called insulated concrete forms (ICFs) uses ____-inch thick expanded polystyrene.

____ are doubled 2 * 4 pieces with spaces between them used to stiffen wall forms.

Where necessary, to prevent heat loss through the floor and foundation walls, ____made of extruded polystyrene is installed under the concrete slab.

The ____ for a foundation provides a base on which to spread the load of a structure over a wider area of the soil.

If concrete is moist-cured for 7 days, its strength is up to about ____ percent of full strength.

Concrete has high compressive strength.

Any water used to make concrete should be clean and even drinkable.

Precast concrete foundations sections are set by a crane and then bolted together.

Steel reinforcing bars, called rebars, are used in concrete to increase its ____.

Rise is the vertical distance of a step, the height of each step.

Concrete wall forms have more stress in the middle than they do at the top and bottoms.

______ strength is the quality of being resistant to breaking under a pulling force.

Form panels are built of special form plywood backed by metal ribs or 2 * 4 ____.

The purpose of a(n) ____ is to provide a lock between the footing and the foundation wall.

____ tests are made by inspectors on the job to determine the consistency of concrete.