Remodeling home for 200+G tank

[Mtb_reefer]

I’m in the very early stages of planning a new build. Unfortunately my living room just isn’t big enough for a tank 200+ gallons, but fortunately it can be when I knock the wall down Dividing the living room and the garage.

The garage door has already been taken out and framed up so it is essentially a storage room. But the floor is still sloped and has about a 3” drop from the rest of the slab. Now I could have concrete poured and level it out but considering the expense of the tank it self and me being a carpenter I can do the work myself and save a ton.

so here is what I’m thinking. I knock the wall out and open up my living room giving me about 13 more feet to work with. Run floor joist directly on the existing slab and cover it with 3/4” plywood and put down water proof flooring. Now I’ll also be waterproofing the plywood in the area where the 72”x30”x24” tank will sit with red guard or something similar. But my concern is the weight of the tank.

So any of you contractors, carpenters, builders or engineers see any issues with running these joist on 16” centers and reinforcing them side to side, then setting a tank this size on the floor?

 

[Hal3134]

Former engineer here...so you Plan to put joists directly on the garage slab and are worried that the concrete can take the weight? If so, no worries. We could look up the strength of the garage floor and divide the total weight of the tank by the surface area of the joists, but how about we just recognize that my 5000 lb truck has about 6 square feet of surface area (tires) and the floor is just fine. Plus it’s a dynamic load and your tank will be a static load. And The load from your tank will be less.

just make sure you use pressure treated lumber if it will be in contact with the concrete.

 

[Mtb_reefer]

That makes me feel better. My carpentry experience consist of doing what the boss says lol. Joking aside I’m very confident in my work it’s just that having always worked under someone I’ve never been responsible for anything more than the actual labor that goes into building a structure.