Ok, so I've designed a tank, it's an "L" shape, 8 foot on one leg, by 6 foot on the other. I'm going to use 2x10's for a base, glue and screwed, 2x6 studs for the framing, 12" on center, 3/4 in ply, epoxy fiber glass coating, the hole shebang. My questions are what woyld be considered adequate deck framing underneath. I have several 4x4 post, going onto beefy piers. The outside band of the deck is doubled 2x10, the center of the tank has a doubled 2x6 joist and so does the edge, the post are all within 3 foot of each other, but they are just screwed to the band, joist, beams and perlin. I didn't cut them in. I am going to block next to them to catch more weight and the screw pattern is overkill, from both directions, didn't split any wood. After doing the full calculation on weight I am worried that I don't have enough support to hold it all. Am I being paranoid or what should I do to beef it up if I should. Any help would be greatly appreciated. Pics to follow soon.
Also, I've seen some people post about the plywood used, I plan to go with either marine grade or hardwood, but what should I do about the cavities inbetwee the studs? Should they have holes cut or should I just paint in there before I close up the outside with anything?
Also, I've seen some people post about the plywood used, I plan to go with either marine grade or hardwood, but what should I do about the cavities inbetwee the studs? Should they have holes cut or should I just paint in there before I close up the outside with anything?