The work under Gasworks Bridge is drawing to an end. Removing the earth has been only part of the story, albeit the most visible. It would be no good having just a dip in the track without a proper means of taking away the rainwater. Although we have not seen much rain in the last couple of months the subject of drainage is never far from our minds. Now that the levels are established it's time to assemble the drains and make the connections.
Alongside the line there are slotted drains buried in ballasted trenches, these allow the surface water to drain away from the running line, at predetermined intervals are catch pits and inspection chambers, these are connected in series before finally emptying in to the existing drainage channels.
Here are the inspection chambers above ground. There is a lot of work to get the holes dug, trenches formed and plumbed up all so that there is a clear downhill path for the water to follow.
Here is one of the chambers in hiding mode, waiting for the final earth levels to be set
Here we have a view towards the bridge with the drains in place and covered with ballast, the inspection pit is in the foreground.
And here is one of the finished items. Not a lot to be seen from above the ground but plenty of work has gone on before reaching this stage.
The final view shows the levels and bank side waiting for nature to turn it green again, though we will need rain to both test the drains and help the plants to grow back.
Pictures from a recent track walk by Guy N.
Until next time.
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