12″ x 12″ Plate Replaces
20″ x 20″ Concrete Footing

16″ x 16″ Plate Replaces
24″ x 24″ Concrete Footing






12″ x 12″ Side Plate
for locating against a
Wall or Obstruction

Great for Renovations & Structural Repairs

Insta-Footing is used in place of a poured concrete footing, saving significant time and money. Insta-Footing is to be placed on top of a poured concrete floor slab that is at least 3.5 inches thick. The slab may be required to be leveled with non-shrink grout if existing conditions warrant. Insta-Footing is to be secured to the floor with either two 1/2″ diameter concrete expansion anchor bolts, two concrete screws or powder driven nails. Insta-Footing can support a 4x4, 4x6, 6x6 or steel post. A plate which supports a post at the edge instead of the center is available for the instances where a post needs to be located against a wall or other obstruction. Insta-Footing comes in two difference sizes, a 12″ x 12″ plate and a 16″ x 16″ plate. Plates come unpainted, plain steel. The size of the plate is dependent on the load to be supported and can be determined using the tables below.

Axial Design Loads

Plate IDSizePostOn Concrete Allowed Load (pounds)On Earth Allowed Load (pounds)Replaces Concrete Footing Equivalent
12-4-C12" x 12" x 1/2"4x4 or 4x6 center located7,0002,50020" x 20" or smaller
12-4-E12" x 12" x 1/2"4x4 or 4x6 center edge located2,5001,25012" x 12" or smaller
16-6-C16" x 16" x 1/2"6x6 or 4x6 center located10,0004,40024" x 24" or smaller
Allowed Load amounts assume minimum slab thickness of 3.5 inches, no voids below slab, 2,500 PFS soil bearing.

Lateral & Uplift Design Loads -- Screws or Powder Driven Nails

Plate IDScrews or Powder Driven Nails(2) 1/2" dia. x 3.75" long anchor bolts
Lateral (lbs.)Uplift (lbs.)Lateral (lbs.)Uplift (lbs.)
For plates mounted to concrete only (not earth)

Footing Cost Comparison

ExpenseConcrete FootingInsta-footing
Concrete cost 6 80# bags$260
Rebar (2-#4 each way)$70
Post Connector$6included
Insta-footing Cost0$95 (plus shipping)
Labor to install (see note below)2 hours10 minutes
Cost of labor @ $65/hour$130$11
Cure Time24 hours minimum0
Total Install Cost$169$106 (plus shipping)
Total time to install & cure26 hours10 minutes
Cost savings w/ Insta-footing$68 savings per footing
Time & labor savingsApproximately 26 hours
Labor to install concrete is assuming cutting slab, digging out earth, setting rebar, mixing concrete, etc.