Glacier Boats of Alaska - Builder's Forums

Great Alaskan and Boat Building => Projects - Non-Glacier Boats of Alaska boat projects => Topic started by: Tom Freeburg on July 09, 2020, 12:27:35 PM

Title: 3/4 flooring?
Post by: Tom Freeburg on July 09, 2020, 12:27:35 PM

Full disclosure here.  I am building a 25 1/2 Tolman Jumbo, and using Brian’s construction manual as a guide because of the included details.
My question:  I bought 18mm Aquatec, not realizing it is acceptable to use 1/2 for the cabin and fish decks.  Due to the Covid issues I cannot return or even exchange it.  I am probably adding a lot of unneeded weight, yes?  Can I skimp on the underfloor supports?  (I think not)

Any suggestions?

Thx

Title: Re: 3/4 flooring?
Post by: Brian.Dixon on July 09, 2020, 12:46:36 PM

Thanks for the kind words!

Very roughly figuring out the added weight, using 22' of deck that's 8' wide (this is LARGER than what you are doing), I calculate 3.6 cubic feet of extra wood ... at around 40# per cubic feet of fir plywood, that's only about 140#.  Your boat won't even know it's there ... Carry on.  Don't skimp on the under-deck structure.

Brian

Title: Re: 3/4 flooring?
Post by: Grady300 on August 10, 2020, 03:29:06 PM

I like the 3/4" for flooring. Gives you more meat to mount things to like seats bases ect.