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Strong....cheap...non corrosive material

Strong....cheap...non corrosive material

(OP)
Picture a mine headgear in 50m of sea water sat in a strong current, what materials would you use? It must be strong, and last at least 20 years, is this possible at a realistic price.
I would be glad for any thoughts.

RE: Strong....cheap...non corrosive material

Composite plastic (fiberglass) piles?

RE: Strong....cheap...non corrosive material

(OP)
Buggar,
can you please expand

RE: Strong....cheap...non corrosive material

Lee Composites website will get you started.

RE: Strong....cheap...non corrosive material

Thinking more about it, extra thickness on your structural steel might get your 20 years at the lowest price.

RE: Strong....cheap...non corrosive material

(OP)
I assume that the Romans would have used copper rod or bronze for reinforcing their concrete structures

RE: Strong....cheap...non corrosive material

The Romans substituted gravity for their reinforcing. Gravity doesn't rust.

RE: Strong....cheap...non corrosive material

"...Gravity doesn't rust." neither does marine bronze.

RE: Strong....cheap...non corrosive material

Bronze decays at a rate that is infinitely faster than the rate at which gravity fails.
Designing a structure so that it is all in compression is the best bet regardless of the material.
Very few materials like being under tension in seawater.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube

RE: Strong....cheap...non corrosive material

Too bad you could't make it out of old fiberglass runabouts, of which there seems to be a huge supply.

Mike Halloran
Pembroke Pines, FL, USA

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