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Author Topic:   That boat don't float
Capt Stormfield
Member
Posts: 404
From: Vancouver Island
Joined: 01-17-2009


Message 131 of 453 (520847)
08-24-2009 1:07 PM
Reply to: Message 130 by ICANT
08-24-2009 12:35 PM


Re: Limits of Wood
So big things can be built out of wood.

Yes, but both buildings and boats have structural limits. For all materials, not just wood. The limits for wooden boats, even when reinforced with other materials, are known. The dimensions of the ark exceed those limits. Period.

When properly built, once the boards have received water and swell they will not leak as long as the boards stay in the water.

They're called planks. The issue with larger vessels is not their static integrity, it is their movement in a seaway. Small boats are not analogous to large boats in this respect for the same reasons that organisms with the dimensions of insects cannot be scaled up to the size of horses. As size increases the mass and resultant forces increase by a factor of 3 while cross sectional area (and consequently strength & resistance to torsional forces) only increases by a factor of 2.

Big wooden boats flex and open their seams.

Capt.


This message is a reply to:
 Message 130 by ICANT, posted 08-24-2009 12:35 PM ICANT has responded

Replies to this message:
 Message 132 by ICANT, posted 08-24-2009 1:49 PM Capt Stormfield has responded

  
Capt Stormfield
Member
Posts: 404
From: Vancouver Island
Joined: 01-17-2009


Message 136 of 453 (520862)
08-24-2009 2:50 PM
Reply to: Message 132 by ICANT
08-24-2009 1:49 PM


Re: Limits of Wood
Well the ark was no boat.

It was not built like a boat.

It was built like a building with rooms in it.

Is it your impression that boats don't have compartments? Boats are designed, from the standpoint of both external shape and interior structure, to maximize their strength. "Not built like a boat" does not carry a positive connotation to anyone familiar with why boats are the way they are.

I still would like to know who determined the structural limit that a wood ark would be 300 feet long.

Shipwrights with centuries of experience behind them who did their damnedest to exceed it.

KP


This message is a reply to:
 Message 132 by ICANT, posted 08-24-2009 1:49 PM ICANT has not yet responded

  
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