70008Re: 50% heavier.. WAS.. [bolger] Re: Options for ply thickness for similar sharpie construction on simila

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• Dec 24, 2013
Ok that's enough now. Play nice. Santa is watching

Leigh Ross

484-464-1575 (C)
www.unicornkayaks.com

> On Dec 24, 2013, at 18:19, John Weiss <jrweiss98020@...> wrote:
>
> 3/8 is 50% more than 1/4:
>
> 150% = 150/100 = 3/2
>
> 1/4 x 3/2 = 3/8
>
>> On 12/24/2013 11:05, Chief Redelk wrote:
>> Quote..<If you assume that ¼” and 3/8’” plywood have equal densities,
>> 3/8” weighs 50% more than ¼”. If you assume a straight substitution of
>> 3/8” for ¼” (with no change in framing), then a hull made if 3/8” will
>> weigh 50% more than an identical hull made of ¼”.>
>>
>> John, not doubting you but my thinking went like this..
>>
>> If a boat would weigh 60 lbs in 1/4 ply it seems 3/8 ply would be
>> adding only 1/3 more wood..it should weigh 1/3 more..For example a 90
>> lbs boat normally made out of 1/4 built with 3/8 ply should have 30
>> lbs more wood added so it seems it would weight 120 lbs built using
>> 3/8 ply...
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>
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