 |
|
 |
|
|
|
What is Form-A-Drain®
and how does it work? Form-A-Drain®
is a complete, permanently installed system that forms footings,
drains foundations, and provides a sub-slab perimeter radon
reduction system.
• System Components
• Foundation Footing Form
• Foundation Drainage and Radon Reduction
• End Results
CertainTeed designed and developed FORM-A-DRAIN, a patented
combination footing form system, foundation drainage system, and
radon reduction system for residential basement applications.
The system consists of lineal sections
installed as the foundation footing forms. Upon completion of
the concrete pour, the system stays permanently in place and
performs the function of a foundation drainage system.
It is also an effective method of reducing
radon, since it is a sub-slab perimeter system that forms a
complete loop around the foundation.
FORM-A-DRAIN is the subject of BOCA Research
Report #95-37, renewed annually.
|
|
|
|
|
|
System
Components
Form-A-Drain lineals are manufactured from PVC
(polyvinyl chloride) material using high content of recycled
materials, in convenient 12-foot lengths. Three full dimensional
sizes are available: 4", 6" and 8" – all sizes are 2-1/4" wide.
Each 12-foot lineal weighs less than 6 pounds in 4", less than 8
pounds in 6", and less than 11 pounds in 8", for ease of
transportation, handling, and joining. Accessories are
available, including couplings, corners, drainage outlets, T’s,
and vertical angle pieces. Grade stakes can be left in place;
they do not have to be pulled. Spacer straps are available in
various widths to ensure proper footing width. All fittings and
accessory items are made to precise CertainTeed product
specifications. Fittings are manufactured for easy assembly
without mechanical or solvent fastening. Lineals can be cut
easily with a hand or power saw to exact lengths required.
|
| Click photos for
larger images.
Filter Fabric
Outlet Fitting
Grade Stake
Spacer Strap
back to top |
 |
|
|
|
 |
|
Foundation
Footing Form
Installation is simple, using lineals, couplings,
and corners which ensure a precise form setup.
Spacer straps hold forms in place at specified
widths, for consistent footing dimensions. Rebar
stakes through vertical holes in couplings and
90º corners help keep the system aligned. Grade
stakes hold the system at the proper elevation
for the concrete pour. Alternatively, traditional
steel forming pins may be used.
The entire system is left
permanently in place, eliminating the need to return
to strip, remove, clean, and transport forms to the
next jobsite.
|
|
back to top
Foundation Drainage
and Radon Reduction
|
Outlet
Crossover
Radon
Click photos above for larger
images.
back to top |
|
The installed FORM-A-DRAIN
system, upon competing the function of forming the
foundation footing, is already in place to perform
the ongoing role of the foundation drainage system.
This eliminates the need to purchase and install
separate drain pipe. Lineal section are
manufactured with one slotted wall. These slots
allow water to enter into the two channels and then
exit through installed drain outlets. Lineals are
also available with filter fabric for use in soil
conditions where required by code.
The drainage system is ideally located below the
foundation wall and parallel to the footing; never
below it.
Due to its level placement, high and
low spots are eliminated, allowing improved water
flow through the smooth interior surface of each
lineal channel. Drainage is provided to both the
exterior and interior sides of the foundation.
Crossovers provide a connection between the
inner and outer channels. Drain outlets allow
water to exit the exterior channel through a
drainage pipe, or the interior channel to a sump
pit.FORM-A-DRAIN also
allows for a means of radon reduction. With
simple adaptations, the same system, already in
place, can perform as a radon reduction system.
Lineals form a complete loop around the foundation,
which is in conformance with the EPA’s Model
Standards & Techniques for Radon Control in New
Residential Buildings. Click on the
"Technical" link at left to download Installation
Manual for complete details.
|
| |
 |
|
End Results
FORM-A-DRAIN forms precise foundation
footings, with an ideally located foundation
drainage system above the bottom of the footing and
below the foundation wall. The system allows for
simple adaptation to function as an effective means
for radon reduction since it forms a complete loop
around the foundation.
Eliminate the need, cost, and time of going back to
the jobsite to remove, strip, clean, and transport
forms for reuse. Join the evolution in advanced
footing construction; never go back to obsolete
methods. |
back to top
|
|
|
|
|
|
|
|
|
|
