Fast-Tube™ is made from high strength polyethylene with an alignment tab running the full length. Sandwich the alignment tab between two 2x4s. When filled with concrete Fast-Tube™ forms a perfect circle.

TOOLS

- hammer tacker, 3/8” staples
- hammer, small nails, 3” nails
- large square
- utility knife

Use two straight 2x4s longer than column height. Mark height on first 2x4. (Some contractors mark tube longer and trim to height in position.)

Start alignment tab at end of 2x4 with weld directly against 2x4 edge. Staple three or four times at base.

Unroll Fast-Tube™. Pull snugly on tab to align along 2x4 and prevent wrinkles. Staple top end 3 or 4 times just below height marker. Then staple tab 18” on center.

Rotate 2x4 on edge, place square against 2x4, cut with utility knife.

Nail second 2x4 to first, sandwiching the alignment tab. Double nail at base and top, then 18” on center. Locate nails 1” from edge closest to tube to better grip tab.

Wrap top of rebar cage to prevent fabric tearing. Slide Fast-Tube™ over rebar. Plumb and brace 2x4s.

Locking base - hand hold method

Hold bottom edge at 8:00 and 4:00 o’clock creating tension to prevent leakage.

Insert pump hose half way down center of tube and withdraw as tube fills.

Vibrate as required.

Locking base - pre-attached method

For accurate alignment, staple center of bottom edge to a 1x2 or 1x4 and brace diameter distance away from 2x4s.

POURING CONCRETE

Insert pump hose down center of tube and withdraw as tube fills. Vibrate as required. Maximum slump is 5" to prevent leakage at the base.

STRIPPING

Pull on alignment tab or cut with utility knife. Reuse stripped Fast-Tube™ fabric as under-slab vapor barrier.

ATTENTION

When filling Fast-Tube™, insert hose in center of tube, half way down. Do NOT pull on top edge as this can unpeel the weld.