Quote:
Originally Posted by fotze2
What am I looking at there? What’s the yellow stuff and wire wrapped for. Those structural clothes hangars?
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I believe these lines are an inner plastic liner or coating, a steel cylinder followed by high tension steel cable in concrete. The steel cylinder is for internal pressure the concrete is for external loading
https://www.ewingfabricators.com/pro...-pressure-pipe
So the yellow is the internal liner.
Wild ass guess is that the concrete failed externally leading to the collapse of the pipe. It looks like from the damage to the liner that it failed outside in.
Edit: looking closer the yellow looks to be the steel cyclinder. It would be painted for corrosion prevention against the concrete.