Floors that slope 2 or 3 inches in 20 feet would be a very serious concern.
Maximum floor slope.
5 6 1 the slope of the floor from the shallow end wall towards the deep area shall not exceed 1 foot in 7 feet 30 cm.
Nearly all will say that if a floor slopes 1 and 1 2 inches in twenty feet or more that there should be further investigation.
Your figure of 1 4 per foot doesn t sound bad.
When they poured my garage slab in my last house i asked em to slope it a lot.
Aci 117 90 st andard specifications for tolerances for concrete construction and materials gives a level alignment tolerance of 3 4 inch for top of slab elevation of slabs on grade.
A 2 slope will probably ensure better drainage we could also find no slope tolerance for use when a floor slope is specified.
5 6 2 changes in slope between shallow and deep.
Floor slopes shall be reasonably uniform and comply with 5 6 1 through 5 6 3.
Another consideration regardless of the amount of slope is whether there is structural damage in the home or only cosmetic damage.
213 cm to the point of the first slope change as shown in figure 5.
I d slope it as much as you can stand.
But they got one low spot right where i got out of my car.
The building code requires that a garage floor be sloped towards the door but does not specify a minimum slope.
Shower floor slope to efficiently drain the recommended minimum slope for a shower floor is about 4 percent or a 1 2 inch drop per every 12 inches from the shower walls to the drain.
It is usually 1 8 to 1 4 per foot.
Floor testing testing on slopes.