Tuesday, May 12, 2009

Bridging a doorway

Well, we now have to get past a doorway as we leave Paxinos heading East. Next stop is Weigh Scales but first we have to create a duck under as we jump from one wall to another. I made an assembly that can be removed in the case that the refrigerator in that small room has to be replaced. It has a false bottom to allow me to run some wires under the riverbed. First we made the road bed out of plywood to be sure everything was on a consistent grade(2%). Then we cut out the center section and placed the bridge piers there. Mistake number one was forgetting that the deck girder requires piers to go up to the level of the track. So, we will have to make some future adjustments. I will show the completed bridge installation in a future post.

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