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

[GREG1957]

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.

 

[BUGGAR]

Composite plastic (fiberglass) piles?

 

[IRstuff]

We'd be looking at around 100 psi, so you need to reconcile the concept with that first, such as performance, range, etc.

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

https://www.youtube.com/watch?v=BKorP55Aqvg

faq731-376 forum1529

 

[GREG1957]

Buggar,
can you please expand

 

[BUGGAR]

Lee Composites website will get you started.

 

[BUGGAR]

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

 

[GregLocock]

The romans used concrete.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376

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[GREG1957]

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

 

[BUGGAR]

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

 

[chicopee]

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

 

[EdStainless]

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.

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P.E. Metallurgy, Plymouth Tube

 

[MikeHalloran]

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