Soil Gas Collector™ - Installation InstructionsWhere is SGC™ most widely applied? SGC™ is the most efficient and cost effective methods for creating sufficient permeability beneath concrete floors to allow for the capture and exhaust of naturally occurring radon gas. SGC™ ease of installation:
Reduce material costs:
SGC™ Passive system:
Placing the Mat1. Lay out the Soil Gas Collector (SGC) on the sub grade after the final preparation and before the concrete is poured. It is typically laid out in a rectangular loop in the largest area with branches or legs into the smaller areas. 2. Position the "T-Riser" in appropriate location and nail down with a 12-inch spike through hole in center. 3. Slide the SGC into openings in "T-Riser" with a portion of the fabric around the outside. Tape the fabric to the outside of the "T-Riser" with duct tape and staple the SGC to the ground with a landscaping staple near the "T-Riser" 4. Roll out the SGC, smooth it onto the ground. To avoid wrinkles and buckling, work away from the "'T-Riser", stapling it to the ground as you go. The SGC should be stapled to the ground every three to four feet, in addition to the corners, "tee's" and ends. 5. Corners are constructed by peeling back the filter fabric, cutting the two ends of the SGC matrix at 45° angles and butting (or overlap no more than 1\2 inch) the matrix together. Pull the filter fabric back and tape into place. Staple across the joint of the matrix and each leg of the corner. Use a minimum of four staples at each corner - two across the joint and one on each leg. 6. The "tees" for branches or legs are constructed by slitting the fabric of the main loop at the location desired. Cut the fabric of branch at the edges and expose 2 inches of the matrix. Cut off the exposed matrix and butt the matrix of the branch (or overlap no more than 1\2 inch) to the matrix of the main loop. Pull the filter fabric of the branch back over the main loop and tape into place. Staple across the joint of the matrix with two staples and one each on the branch and the main loop. Use a minimum of four staples at each "tee"- two across the joint and one on each on the loop and branch 7. All openings in the fabric at joints, "tee's and ends of the branches should be taped to keep out the concrete. 8. When the building is ready for the soil gas vent pipe to be installed, the top of the "T-Riser" is cut off and a four-inch pipe is inserted, caulked with polyurethane and secured with screws. The vent pipe should be labeled to avoid confusion with the plumbing pipes. Note: The openings in the riser are laid out at 180° to accommodate straight runs of the SGC only. If the riser is to be located in a corner, which is Not uncommon, the front of the "tee" can be cut off and the SGC inserted into the new opening. The side of the "tee" which will not be used should be sealed with duct tape. This creates a "90° tee" which will allow the riser to be placed in a corner with either end of the SGC loop running into the "tee" at a 90° angle. Pouring Concrete:The filter fabric that comes sewn around the soil gas collector prevents the wet concrete from entering the mat and reducing its air collection capacity. The only precaution that needs to be taken is that the fabric is duct tape closed at seams of splices and corners sufficiently to keep the uncured concrete from entering. The mat also needs to be secured to the soil with landscape staples to prevent the concrete from lifting it off the soil while it is being applied. Reinforcing bars and wire can be laid right on top of the mat.
Note that the mat is strong enough to withstand concrete workers and their wheelbarrows as they cross over it during the course of installing the slab.
Riser has special hole and spike for securing it in place.
Making Corners and SplicesThe mat should be routed around the inside perimeter of the foundation. This will require an occasional corner. Furthermore, splices will have to be made to join two lengths of mat together. Corners and splices are very easy to make, and do not require any special fittings. Cut back the filter fabric to expose the core material. In the case of a splice merely overlap the core by at least one corrugation replace the cloth and tape it. Use two landscape staples to hold the splice in place. In the case of a corner slice the core of two adjoining legs of the mat at 45-degree angles, overlap the edges by one corrugation, tape the cloth and landscape staple together. The corner is illustrated below:
Cut back the cloth. Cut the core at a 45 degree angle. Overlap corrugations
Replace filter cloth. Duct tape edges to keep out concrete. Staple in place. Connecting The Mat To The RiserA convenient riser with a dual entry allows for either end of the loop of mat to be secured to the soil gas vent riser.
Slide the mat into either end of the riser and tape the edge to prevent wet concrete from entering. The riser comes with a molded cap to keep out concrete Later this cap can be cut off and the 4" Sch. 40 PVC riser can be inserted, screwed and caulked into place
Risers are often placed in corners for convenience of later pipe routing. The plastic riser "tee" can be cut to allow for such situations. Mat Specifications:
The information contained herein is believed to be accurate. However neither KT. Ventures, Inc. nor its selling agents can guarantee results of usage of this product nor assume any obligation or liability for the suitability of the material for the USC contemplated or for the information contained herein. Soil Gas Collector ™ For Radon Control Systems For Technical Information and Orders Call (719) 444-0646 Fax (719) 442-2384
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