Nathan,

I appreciate your response to my query. Your main concern seems to be safety (yes!), and in particular the ability of the PVC conduit pipe to stay rigid. I'm curious, what would be a good minimum standard of rigidity? In other words, if a material of length X could support Y pounds of weight then what is an acceptable amount of flex (Z)?

For example, if supported say 4 feet of PVC conduit with sawhorses at either end, and weighted it with 50 lbs., how much downward flex could be considered "safe enough"? Or 6 feet of length and 100 lbs? Opinions?

Again, thanks for your thoughts,
Wayne