Storm Drain Lining

[SiPaul]

Although lining is generally used for sanitary lines we are considering lining a storm drain to prevent leaking. An adjacent utility is concerned that storm water is infiltrating their system. I would assume that the process is the same as for lining a sanitary line.

We may have heat issues here because of the proximity to a steam line. Does anyone know if the cured liners are thermo-setting ,i.e., once they are cured they won't "melt" back to a plastic state?

 

[SlideRuleEra]

Sewer linings are often polyethylene or polyurethane based.
Polyethylene is typically thermoplastic.
Polyurethane can be either thermoplastic or thermosetting.
Suggest that you contact the manufacturers to determine the temperature limits for their product - the thermal properties of the liner may not be the only consideration (another factor could be the bond between the storm drain and the liner).

 

[dicksewerrat]

I work in the lining industry now. after 35= years constructing and repairing pipes. Lining can seal the storm drain. The polyester resin sets at temps from 130 to 190 degrees F. Once it is crued, it can easily withstand 150 degrees F without major problems. what area of the country are you in? i can steer you to contractors and/or installers that can help you. the steam line shouldn't be heating the soils high enough to cause problems.

 

[SiPaul]

i think that the steam is heating the soil. The system is ancient and not being maintained. I spoke to the lining company and he said that there is no way that it would work because the steam condensate discharge to the drain would crack the thermosetting polyurethane.

I am going to have the steam company remove the discharge and then line.

Dicksewerrat,
If you are in the lining business...can you line a pipe for structural support. If you have apipe that is cracked and failing can you line it and count on any structural support:

 

[dicksewerrat]

Sure you can. The design for the fully deteriorated pipe is for a structural liner. It will withstand the soil load, groundwater load and live load. This design does not use any of the old pipe in the strength calcs. How hot is the ground and the condensate? I can't believe a lining contractor would say the heat would hurt the liner. If it is around 180 you go to the epoxy resin. heat doesnt affect it very much. and other resins can be formulated to withstand all kinds of effluents.

 

[nackra]

I worked on a contaminted site where concern to avoid costs of excavating/disposing of contaminated soils required by replacement of storm sewer system. Design using a rehabilitation system of cured in place pipe (CIPP) was selected to prevent infiltration of contamination into storm sewer (which discharged to waterway).

I believe that ASTM F1216 has been updated to allow "inversion" and "pulled in place" methods to install liner.

 

[dicksewerrat]

By the way, we are lining a 24" storm drain on Monday to stop infiltration