SuperVoid Pipe-Void Systems allow for plumbing systems under buildings to be isolated from the potentially damaging effects of expansive soils.
SuperVoid Systems currently offers three different pipe void systems. Selection of a project appropriate pipe void system depends on several variables. The biggest and most important variable is the expansive properties of the soil in which the plumbing systems is to be installed. Other variables can include pipe size, depth, and pipe material.
• We call soils having a Potential Vertical Rise (PVR) of 4 inches or less moderately expansive.
• We call soils having a PVR of 4 to 8 inches significantly expansive.
• We call soils having a PVR of more than 8 inches extremely expansive.