- Is code approval required?
No. Fastfoot® is a temporary form, similar to lumber.
- How deep a footing can I pour?
Footing depths up to 24" are achieved with Fastfoot®. If the
height of the fabric under the 2x4 screed rail is greater than
10", install a second 2x4 to reduce fabric tension and bulge
(the 10" rule). See the
installation manual for more
information.
- Will Fastfoot® reduce my costs?
In most cases Fastfoot® will reduce your forming costs
significantly. Increased footing depth will lead to increased
savings. Conversely, a higher reuse of your forming lumber will
reduce your savings. For a detailed cost comparison using your
project specifications, please click here.
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- Will Fastfoot® improve my forming
speed?
Yes. You no longer transport 2x10s or 2x12s to and from the
jobsite. Stripping of 2x4s and stakes is fast as they haven't
touched concrete. Concrete placement is fast as you use a higher
slump concrete without leakage.
- Can I vibrate the concrete?
Yes, or kick the fabric.
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- How does the fabric affect steel
placement?
Fastfoot® does not affect steel placement what so ever.
- What about steps?
Forming steps is fast, easy, and very inexpensive. The only
lumber required is the plywood bulkhead - the rest is done with
fabric. Dramatic cost savings are obtained in materials, labor
and concrete.
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- Do I use more concrete?
No. On full footing forms the 2x4s are spaced 3" closer together
than the footing contact width (1 1/2" offset). This reduces
concrete. As well, there is no concrete leakage with Fastfoot®
as you are pouring into a closed form.
- Does the Fastfoot® prevent rising
damp?
As water is strongly attracted to concrete, it is essential to
protect the footing from external water sources. A 3 to 4"
drainage layer should be installed under the footing with
impermeable soils. Fastfoot® must be installed around the
footing, with the wall membrane lapped over the footing
membrane. For additional information
please click here.
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- Will the Fastfoot® improve
concrete quality?
Yes. In summer, Fastfoot® prevents rapid concrete desiccation by
ground and form water absorption. In winter, Fastfoot® prevents
concrete contamination by muddy ground and water. For additional
information, please click here.
- Will Fastfoot® affect the
lateral resistance of the footing with the ground?
As most footings are designed to transfer vertical loads from
the building structure to the ground below, the fabric will have
no effect on structural performance.
Significant lateral resistance is provided by footings as a
result of the following:
· the ground is uneven, and/or
· there is a slab or floor inside the foundation
Under these conditions, the footing (either fabric or lumber
formed) can withstand normal lateral loading.
If the footing is constructed on very flat ground and there is
no slab to prevent lateral movement (for example with retaining
walls), the footing must be engineered to withstand lateral
loads. In this situation an Engineer must design the proposed
footing. Standard engineering practice is to 'key' the footing
into the ground by digging a small keyway parallel and under the
footing before placing the fabric and pouring the concrete.
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- What size Fastfoot® do I use for
my footing?
For the correct Fastfoot® width to use, please click here.
- What is the difference between a
full footing form and an edging form?
A full footing form is when the fabric width forms both sides
and bottom of the footing with a single width of fabric. Click
here for the full footing. An edge form is when the edge only is
formed with a single width of fabric. Edging fabric is typically
used when the footing or slab is too wide to form with a single
width of fabric. Click here for the edging.
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