Square Foot TubeBase concrete quantity needed install plastic footing form

Consult the Square Foot® Concrete Usage Table before you begin your concrete footings project.

Concrete Usage for Each Square Foot®

PRE-MIXED CONCRETE BAGS

READY-MIXED TRUCK DELIVERED

	Model #	Concrete/Square Foot®;
CONVERSION	SF 22	2.00 cubic feet
1 cubic yard = 27 cubic feet	SF 28	4.50 cubic feet
	SF 32	7.00 cubic feet
* check with your local ready-mix plant for minimum quantities.

Technical features:

The small vent holes in the sloped sections allow the escape of air trapped inside the footing form when the footing is being poured with concrete.
The top rings of the Square Foot® footing forms are designed to accept various inside diameter construction tubes from various manufacturers for each footing form model. The rings not used must be cut off at the top of the ring being used and removed before any concrete is poured.
The bottom base flange is designed to fit flat on the excavated area and provides a location at the base where 3/8" (0.95cm) of 12 - 12" (30.50cm) steel spikes may be drilled on at a 45 degree inward angle. This will anchor the footing form in position for above ground use or when the unit has not been backfilled.
Refer to specific literature from Construction Tube Manufacturers for technical information on acceptable lengths of construction tubes. Extra vibration to consolidate concrete may be necessary, such as using a mechanical concrete vibrator or tapping on the outside of construction tubes for columns exceeding 8 feet (2.44m) Square Foot®;

Protected by:

U.S. Patent # 4,673,157 (Footing form)
U.S. Patent # 6,543,742 (Footing form)
U.S. Patent # 4,767,241 (Method for simultaneous forming of concrete footings and piers) Other patents pending.

Building Code Information and Independent Testing:

CONCRETE USAGE