Larry W. Primm
(334) 730-3614
lprimm@supervoid.comDavid S. Primm, P.E.

(334) 221-5761

primmd@supervoid.com

   

 

 

 

  

 

 


Pipe-Voids

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.


Unique Projects
Because every project is unique, each pipe void system should be designed to specifically meet project requirements. For this reason, we at SuperVoid have developed several different products for various applications. We have approached the need for variation by offering pipe void systems which we consider to be good, better, and best.


A Good option is PV-614
The PV-614 is a good pipe void system when the soil is moderately expansive. This system provides a 6 inch deep, 14 inch wide void space under a layer of non-cohesive ballast soil. The plumbing system is installed directly in the ballast soil. The void envelope is maintained after backfill by filter fabric which comes preinstalled on the void form units.



A Better option is Standard Pipe Void
The Standard Pipe Void system is a good option for all soil types. It is a better option than PV-614 for moderately expansive soils. The SuperVoid Standard Pipe Void system can be provided in many different configurations to meet project specific needs. Like PV-614, Standard Pipe Void provides a void envelope below a layer of non-cohesive ballast soil. The Standard Pipe Voids are wrapped in filter fabric in the field, then SuperVoid Rib Retainers are placed along each side of the Standard Pipe Voids to prevent lateral soil migration into the void space.


The Best option is Saddle Pipe Void
The Saddle Pipe Void system is the best option for all soil types. This system offers the greatest protection to plumbing systems by suspending pipes inside of the void space which eliminates all pipe-soil contact. The SuperVoid Saddle Pipe Void system can be provided in several different configurations to meet project specific needs. Like Standard Pipe Void systems, Saddle Pipe Void systems are wrapped in filter fabric in the field, then SuperVoid Rib Retainers are placed along each side of the Saddle Pipe Voids to prevent lateral soil migration into the void space. Saddle Pipe Void systems are suitable for pipes up to 12 inches in diameter and can be designed to accommodate extremely expansive soils and pipe clearance requirements.