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.

Maximum floor slope.

Floors that slope 2 or 3 inches in 20 feet would be a very serious concern. Floor testing testing on slopes. Your figure of 1 4 per foot doesn t sound bad. I d slope it as much as you can stand.

It is usually 1 8 to 1 4 per foot. 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. So during the winter melted snow and rain would puddle there and freeze. Here is the citation from the international residential code irc.

A 2 slope will probably ensure better drainage we could also find no slope tolerance for use when a floor slope is specified. Floor slopes shall be reasonably uniform and comply with 5 6 1 through 5 6 3. But they got one low spot right where i got out of my car. 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.

It stands to reason that the steeper the slope then the more likely you are to slip on that slope yet one of the biggest mistakes we see is a lack of understanding that a slope on a floor requires an increase in the slip resistance value srv also know as the pendulum test value ptv. 213 cm to the point of the first slope change as shown in figure 5. 5 6 2 changes in slope between shallow and deep. When they poured my garage slab in my last house i asked em to slope it a lot.