Kettering 6ft Drainage Catch-pit


The site of the drainage was a tight 6ft with the catch-pit touching the cut-back sleeper. Originally the catch-pits consisted of concrete base and frames. Due to the stresses on the catch-pit the concrete frames were continuously breaking and having to be replaced every 3 months. Another problem was the catch-pit had two cross drains as well as the 6ft run, this led to the concrete catch-pit being less robust than usual.

The Solution:

In 2010 Aqua was approached by Babcock Rail with the intention of installing a GRP catch-pit system which Aqua had developed. They hoped the new units would be able to withstand the dynamic forces being imposed without a failure occurring. Testing by an out-sourced company, Exova, had concluded that the units could take a side load of 39t thus leading to high confidence level that these units would work in such an environment.  In August of that year Aqua supplied Mini-Stirling catch-pit bases with Mini-Derby GRP frames and these were subsequently installed in the 6ft, figure 1. 


In February 2011 a review of the drainage units took place. Upon inspection the units were found to be working correctly. There were no signs of deformation or damage from the cyclic forces being induced upon them. To this date the units are still working smoothly and have never needed replacement.


Aqua GRP base units and Derby frames provide an extremely strong catch-pit that is capable of functioning in tight 6ft applications, where no other catch-pit is capable of!

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Kettering 6ft Drainage Catch-pit

The site of the drainage was a tight 6ft with the catch-pit touching the cut-back sleeper. Originally the catch-pits consisted of concrete base and frames.


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