Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

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

Status
Not open for further replies.

GREG1957

Marine/Ocean
Joined
Oct 4, 2016
Messages
3
Location
GB
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.
 
Composite plastic (fiberglass) piles?
 
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! faq731-376 forum1529
 
Buggar,
can you please expand
 
Lee Composites website will get you started.
 
Thinking more about it, extra thickness on your structural steel might get your 20 years at the lowest price.
 
I assume that the Romans would have used copper rod or bronze for reinforcing their concrete structures
 
The Romans substituted gravity for their reinforcing. Gravity doesn't rust.
 
"...Gravity doesn't rust." neither does marine bronze.
 
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
 
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
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top