CODE CHECKLIST
Strong Sleeve for soil gas collector matting in 8″. Strong sleeves go in form during load-bearing footer pours. Once the concrete is hardened, the foam knockouts are removed and you have a void space to put gas matting through. Strong sleeves allow for pressure field extension across footers.
It is recommended, especially during cold weather months, that 2″ is removed from grade to allow for soil gas collector in soil with 1″ foam above.
Placed in form for gas mat penetrations across slabs.
a. Install at elevations and locations shown on the Drawings or as otherwise directed by the Architect. Coordinate all locations with the Structural Engineer to confirm that the block-out locations through the grade beams and stem walls have sufficient structural strength and adequate reinforcement.
b. Attach the Sleeve to the interior walls of the concrete forms using the (4) pre-drilled holes in each Sleeve unit. Adjust steel reinforcement as directed by the Structural Engineer for wall or grade beam penetrations.
c. After pouring concrete and removing concrete forms, remove the foam insert within each Sleeve. Use mechanical means only, DO NOT USE SOLVENTS TO DISSOLVE THE FOAM. Using solvents (such as gasoline) to remove the foam blocking may damage radon mitigation equipment and may lead to the risk of fire.