I am currently working on a build and I have a question and not sure if I am asking it correctly.
If you were building a flat bottom planning hull
16’ length
7’ bottom width
12-15” sides
Desired max speed 20-30 mph
Displacement approximately 2100#
Could you use 1/4 marine ply for the hull if glassed both sides. Would use an egg crate stringer/framing system
Spans on 16” centers square. Basically creating a box. Thanks for your response.
Plywood laminate strength
- Explorer 19TV
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- cape man
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Re: Plywood laminate strength
1/4 " for the sides should be fine, but I would go at least 1/2" for the bottom.
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Re: Plywood laminate strength
Thanks cape man.
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Re: Plywood laminate strength
Thanks guys.
- Evan_Gatehouse
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Re: Plywood laminate strength
With all the support from the framing 16" spans, you can use thinner than 1/2".
If you are glassing both sides with a single layer of 12 oz biaxial you probably could get away with 3/8 quite easily.
If you are glassing both sides with a single layer of 12 oz biaxial you probably could get away with 3/8 quite easily.
designer: FB11/GV10,11,13/ HMD18/
SK17,MM21/MT24
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Re: Plywood laminate strength
Or you could buy one of the proven Mertens plans and know that it will work. If nothing else the specifications would be a good guide.
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Re: Plywood laminate strength
Thanks for the replies, I’ve built a few boats as well as rebuilt a few. I have a couple sets of plans and I am using that as a reference as well.
Just wanted and respect the forums opinion as I know there is a lot of valuable knowledge here.
Just wanted and respect the forums opinion as I know there is a lot of valuable knowledge here.
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Re: Plywood laminate strength
Going with the 3/8 for the bottom for sure with one to two layers 17 oz
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Re: Plywood laminate strength
17oz on 3/8". No worries about that breaking unless you plan on dropping it off buildings.
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