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Abstract:VTrans Transportation District Administrators have asked the Agency’s Structures Section to consider
using nonmetallic materials in bridge drainage systems. Fiberglass is inert to oil, gas, road salt, ice
melting
solutions and many other corrosive chemicals. The effort behind this project was to learn about
the product, the installation details, to compare its costs to other commonly installed drainage systems
and to make observations regarding its durability.
Th
e drain system used was the Westfall Company Fiberglass Bridge Drain System. This system ha
d
not been used in Vermont. The material that is to be used is for bridge and highway piping and is a
filament wound composite pipe consisting of a thermosetting r
esin and continuous glass filament
structural reinforcement. The individual components are nonmetallic.
The results of this work showed that the initial installation cost of using Fiberglass Bridge Drain System
is about same as current practice. The
work showed that the system is less susceptible to corrosion
and defects, and subsequently the product will sustain its
functionality longer, thus reducing the costs
of repairs and/or replacement. The Agency should update the Special Provisions and Suppl
emental
Specifications to include specifications that allow and direct the use of the Fiberglass Drain System.
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