They are laying Fiber Optics in our neighborhood and they were throwing away 3-8 foot lengths of HDPE 2 inch pipe- the orange stuff on big spools on the side of the road.. I grabbed it all and now have 400 3 -4 foot pieces and 250 8 foot lengths.

How many pieces of this pipe should I put in each half of a 5 gallon bucket of cement I mix? I don't want to make each bucket too dense.

Any suggestions on best what to build with all this pipe?

This will be used in a private 200 acre lake and has been approved by both the HOA as well as the DNR.