How TubeBase™ Works

FORM DESCRIPTION

Sound Footings™ footing form is an engineered pre-fabricated form made from Block CoPolymer Pinnacle 2135H which can replace formwork for footings that support piers. The plastic footing form has a square base that tapers up to a conical shape that allow, for standard fiber construction tubes to be attached to the top of the footing form. Sound Footings™ footing forms are available in two different sizes: Model TB22, Model TB28, and Model TB32. The footing form has a uniform height with six flanges at the top to accommodate the different sized construction tubes. The construction tube is attached to the conical section of the footing form using four 3/4 inch - 1 inch (1.91 cm 2.54 cm) wood screws. It is then set into the ground on undisturbed soil or 4 in.- 6 in. (10.16 - 15.24cm) compacted crushed stone. The footing form is then plumbed, backfilled and is filled with concrete making a monolithic pier and footing unit. The construction tube and plastic footing form remain in place after the concrete is cured.

SOUND FOOTINGS™ FOOTING FORMS DETAILS

Two sizes are available:

MODEL TB22 is 22 inches (55.88 cm) square at the base. It will accommodate 8 inch (20.32 cm), and 10 inch (25.4cm) construction tubes.

MODEL TB28 is 28 inches (71.12 cm) square at the base. It will accommodate 8 inch (20.32 cm), 10 inch (25.4cm), and 12 inch (30.48) construction tubes.

MODEL TB32 is 32 inches (81.28 cm) square at the base. It will accommodate 12 inch (30.48 cm), 14 inch (35.56 cm), 16 inch (40.64 cm), & 18 inch (45.72 cm) and large construction tubes.

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 Sound Footing™ 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 inch (0.95 cm) holes may be drilled on a 45 degree angle to receive a minimum of 12 -12 inch (30.50 cm) steel spikes driven in 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 length of construction tubes. External 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 (2.44 m).