Sonotube® TubeBase®
Installation
Below grade/ground installation tips
- Excavate hole to a depth to avoid frost penetrating under pier. (Typically 4’ to 6’.)
- Apply Sonotube form to TubeBase footing form.
- Cut off excess plastic at top of wedges to desired Sonotube form size.
- Attach Sonotube form to TubeBase footing form with a minimum of 4, 1” screws.
- Place TubeBase footing form at desired location. (On undisturbed soil or 4”-6” of compacted crushed stone or gravel.)
- Install footing rebar if required. (Rebar installation should be approved and designed by a qualified engineer and meet all building code requirements.)
- Level/plumb Sonotube form/TubeBase footing form prior to backfilling.
- Sonotube form and TubeBase footing form combined cannot exceed/extend 24” or more above grade/ground.
- Have inspected by building inspector as required by different municipalities.
- Backfill making sure Sonotube form remains level/ plumbed at desired location.
- Prior to pouring concrete into Sonotube form invert spare TubeBase on top of Sonotube form to act as a funnel for concrete pour.
- Pour concrete.
- Install anchor bolt to accept bracket as required.
Above grade/ground installation tips
For any TubeBase footing form project which requires the combined use of a Sonotube form and TubeBase footing form to exceed/extend 24” above ground/grade when pouring concrete, the Sonotube form MUST be braced to prevent movement of Sonotube form while the concrete is curing. (Conventional methods: Strapping or 2X materials w/stakes; wooden collar; frame with side braces)
