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A: Precise Forms continues to develop new and cost effective methods
for conforming to the code criteria that require an R-10 in walls constructed in Zone 4
and higher. We have introduced a revolutionary patent pending support system in our
EASI-WALL in the last 18 months. This has garnered a tremendous amount of interest in many
markets.
We now want to introduce EASI-WALL NR. This is the same product without
the steel grid. Many contractors have exhibited great interest in getting just the foam
and the patented support system. This would require the contractor to place the steel on
site for each wythe.
This provides the security of the EASI-WALL support system and allows
the contractor to install the steel required by their local code departments or their
local Engineer on site. Another option that can expand the potential for market growth for
the concrete contractor.
A: The EASI-WALL can come with several types and thicknesses of foam;
these are factors that impact the R-Value. Additionally, your geographic location has an
impact on the R-Value. What we can say is the foam has a qualified R-Value and the
concrete has little or no R-Value but does have mass. It takes 2 hrs per inch for the
ambient temperature to pass through the mass of standard concrete. Therefore, with a 4/2/4
wall configuration you have 8 hrs of protection on the exterior before the ambient
temperature reaches the foam insulation. Conversely, this works to your advantage on the
interior of the structure as well, acting as an 8 hr thermal mass with the 4” of
concrete.
A: The structural steel design should be left to your Structural
Engineer. We have worked consistently with a Structural Engineer on the design of the
EASI-WALL, but make no claims on the performance of this design. What we can say, is that
your Structural Engineer would be able to take this design and make supplementary
structural add-ons if needed, that you would place on site. The soil conditions, as well
as the amount of load exerted on the wall will vary from area to area due to many factors.
Therefore, we recommend you consult with your local Structural Engineer. The 10” on
center grid of #3 rebar should get you well into the design criteria for most conditions,
but this needs to be determined by your local code criteria.
A: This will prevent most conflicts with the wall ties and the steel
when using an 8” hole pattern or 6”- 12” hole pattern on the forming
system. Plus, this allows the Patent Pending support system to be as close as we can for
that all important foam support and remain clear of the wall ties.
A: The EASI-WALL is preassembled in our factory to include several
labor saving factors. The bulk of the reinforcing steel is already in place, except for
any additional structural steel your engineer may require, thus reducing the cost of on
site labor for placement and securing of the steel. All the Stand Offs (spacers) are
preassembled and ready for installation, therefore on site labor is dramatically reduced
as this process is already completed when you receive the product. The installation of
electrical outlets and switch boxes become quite simple and fast with the outlet clip that
installs in a matter of seconds, and can be located virtually anywhere vertically or
horizontally. Concrete placement can proceed at a normal pour rate as the Patent Pending
support system offers the very best in foam support on the market. The foam for a
structure of 250 lineal feet of 10' wall can be installed by 2 workers easily in a day, in
most cases. This relates to money savings as a full crew is not on site. The second step
would be for the electricians and plumbers to install all of their items and again the
forming crew is not on site waiting for these installations to take place, thus reducing
several trades from stepping on each other or slowing the process. When factoring in these
crucial erection and placement points, the EASI-WALL is far and away ahead of any other
sandwich wall panel on the market. It is ready to use with little on site additional
requirements.
A: The corners are secured by trimming off the overhanging rebar on the
end of one panel. Snug the panels together making sure the insulation is touching. Tie the
corner rebar segments locking the panels into place. Trimming the rebar on site allows any
standard panel to be used rather than digging through the pile to find a specific panel
for the corner.
A: A 16” X 16” piece weighs 6.4 lbs. Roughly 5.7 lbs per
square foot with a 2lb density 2” thick piece of foam.
A: The EASI-WALL will allow for a minimum 3” thick concrete wall
on either or both sides up to whatever thickness you may require. The foam thickness can
be adjusted per your design however the support of a 1” thick piece of foam will
require extra care in the placement of the concrete as we have not tested off set pours
with foam less than 2” thick.
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