SilverPhoenix
Member
I have a rather odball question regarding positioning my sump under my tank.
My house is single story on top of concrete slab. Atop that is some glued down enginered tongue and groove wood flooring, about 3/8" thick.
I have a wooden stand constructed of 3 x 2x4 at each corner supporting 2x6 cross beams running the 6' lenght of the tank.
Probably overkill but to compensate for any potential sag I have 1.5" angle Iron atop the 2x6 beams. 4" steel beams we just rediculously pricey.
My issue is that the bottom of the DT will be at 42" which puts the bottom of the 2x6 at 36 1/2" above the floor.
My sump is 25 1/2" high leaving 11" clearance between the top of the sump and the bottom of the beams.
My planned skimmer is 10 1/2" at its narowest dimension.
I failed to account for the fact that there might be a significant bow in the concrete slab under the tank.
When in place there is about a 3/8" gap between the floor and both ends of the tank. The middle 2 feet if the tank rest solidly on the floor.
Obviously I know that this is unacceptable from a stress standpoint on the tank.
Unfortunately I have left myself with very little leeway to compensate for the bow in the slab.
Has anyone had any experience with using self leveling agents in order to place a tank directly on the floor?
If my calculations are correct (est 2800 lbs of weight over 192 linear inches of rim at aproximately .75" width for a total of 142 square inches of contact translates into roughtly 20 psi pressure being applied to any given square inch of floorint under the tank. for the sake of safety I believe I have over calculated the weigth of the tank and under estimated the footprint of the bottom rim of the tank. I have also not included the footprint of the 2 cross braces in the middle of the tank.
Would I be better off removing the flooring under the tank and leveling straight off the slab?
I left the flooring there under the premise that, if I move and dismantl the tank I hypothetically might not have to redo the floor under the tank or at most might only have to refinish it.
My project has obviously stalled until I can find an adequate remidy for this issue.
I have explored using some construction epoxies that when cured have a strength of about 2000 psi to build up a level ledge to support the footprint of the tank but they have been too cumbersome to work with properly. I remember seeing self leveling flooring agents on this old house or some other show years ago and know that they exist but havent had much luck in finding one in the stores. or at least one that any of the employees think would have a chance of workign for me.
I have even considered using an epoxy resin clearcote agent that I used years ago tha tis supposdly equivalent to roughly 40 cotes of polyurathane but I havent got my hands on it to see what it's cured compression strength migtht be.
Any suggestions would be greatly appreciated.
Thanks
My house is single story on top of concrete slab. Atop that is some glued down enginered tongue and groove wood flooring, about 3/8" thick.
I have a wooden stand constructed of 3 x 2x4 at each corner supporting 2x6 cross beams running the 6' lenght of the tank.
Probably overkill but to compensate for any potential sag I have 1.5" angle Iron atop the 2x6 beams. 4" steel beams we just rediculously pricey.
My issue is that the bottom of the DT will be at 42" which puts the bottom of the 2x6 at 36 1/2" above the floor.
My sump is 25 1/2" high leaving 11" clearance between the top of the sump and the bottom of the beams.
My planned skimmer is 10 1/2" at its narowest dimension.
I failed to account for the fact that there might be a significant bow in the concrete slab under the tank.
When in place there is about a 3/8" gap between the floor and both ends of the tank. The middle 2 feet if the tank rest solidly on the floor.
Obviously I know that this is unacceptable from a stress standpoint on the tank.
Unfortunately I have left myself with very little leeway to compensate for the bow in the slab.
Has anyone had any experience with using self leveling agents in order to place a tank directly on the floor?
If my calculations are correct (est 2800 lbs of weight over 192 linear inches of rim at aproximately .75" width for a total of 142 square inches of contact translates into roughtly 20 psi pressure being applied to any given square inch of floorint under the tank. for the sake of safety I believe I have over calculated the weigth of the tank and under estimated the footprint of the bottom rim of the tank. I have also not included the footprint of the 2 cross braces in the middle of the tank.
Would I be better off removing the flooring under the tank and leveling straight off the slab?
I left the flooring there under the premise that, if I move and dismantl the tank I hypothetically might not have to redo the floor under the tank or at most might only have to refinish it.
My project has obviously stalled until I can find an adequate remidy for this issue.
I have explored using some construction epoxies that when cured have a strength of about 2000 psi to build up a level ledge to support the footprint of the tank but they have been too cumbersome to work with properly. I remember seeing self leveling flooring agents on this old house or some other show years ago and know that they exist but havent had much luck in finding one in the stores. or at least one that any of the employees think would have a chance of workign for me.
I have even considered using an epoxy resin clearcote agent that I used years ago tha tis supposdly equivalent to roughly 40 cotes of polyurathane but I havent got my hands on it to see what it's cured compression strength migtht be.
Any suggestions would be greatly appreciated.
Thanks