20x25 diy garage slab

I’m looking at building a 20x25 garage on a lot adjacent to my house. The lot is fairly level aside from the back right corner. Plan is the do 12”x12” footers all the way around with 5” slab on compacted gravel base, mesh with rebar in the footers. Accounting for the slab being 5 inches above grade at the highest corner, that would put the back right corner at about 20” above current grade. Whats the best way to approach that low corner to assure a strong pour and good drainage afterwards? Hard to tell by the photo but there is a slope from the road going down to that low corner so want to make sure there is still adequate drainage. submitted by /u/Confident_Top_4083 [link] [comments]

May 22, 2025 - 19:30
 0
20x25 diy garage slab
20x25 diy garage slab

I’m looking at building a 20x25 garage on a lot adjacent to my house. The lot is fairly level aside from the back right corner. Plan is the do 12”x12” footers all the way around with 5” slab on compacted gravel base, mesh with rebar in the footers. Accounting for the slab being 5 inches above grade at the highest corner, that would put the back right corner at about 20” above current grade. Whats the best way to approach that low corner to assure a strong pour and good drainage afterwards? Hard to tell by the photo but there is a slope from the road going down to that low corner so want to make sure there is still adequate drainage.

submitted by /u/Confident_Top_4083
[link] [comments]