United States Department of Transportation
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Utilizing Snap-Tite slip line pipe as a direct burial cross pipe, construction and first interim report, October, 2007.
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2007-10-01
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Abstract:The Maine Department of Transportation uses reinforced concrete, polymer coated corrugated metal,
corrugated aluminum or corrugated polyethylene for highway cross pipes. Design life for cross pipe is 50
plus years. Repair of failed cross pipes involves excavation and replacement resulting in high costs and
traffic congestion. A cost effective solution to repair failed cross pipes is to slip line the pipe. MaineDOT
policy allows the use of solid wall and profile wall high density polyethylene pipe for slip line
applications. Snaptite is one of the solid wall liners often used.
SnapTite
Pipe is a smooth bore pipe that comes in a variety of lengths and diameters. The pipe is
lightweight and has a unique joint that snaps together to form a tight bond and water tight seal.
The Department has been slip lining corroded corrugated metal cross pipes for a number of years
using SnapTite
Pipes. This repair can only be employed when the existing pipe is large enough for the
slip line pipe, the replacement pipe is large enough to handle the water flow, the ends of the metal pipe
have not been lifted by frost, and the position of the existing pipe is sufficient for drainage.
A cross pipe on the Smyrna Road in Oakfield and another on the Pond Road in Benedicta were not
suitable for slip lining and had to be replaced. It was decided to use SnapTite
Slip Line Pipe as a direct
burial cross pipe at these locations because of the cost as compared to the conventional materials used.
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