Sloping A Floor With Concrete
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A 2 slope will probably ensure better drainage we could also find no slope tolerance for use when a floor slope is specified.
Sloping a floor with concrete. Sloping a floor is necessary for proper drainage. While technically a good idea and perhaps a viable one for professional masons it can be difficult for novices to achieve such results like a couple of inches of gain over 20 feet. When installing a floor drain on most indoor floor surfaces it is important to slope the floor slightly so that water will flow toward the drain efficiently. Foundation issues deteriorating wood supports especially sills which rest on the foundation footer improperly installed joists or sub floors and other issues can all cause a floor to slope or sag.
Sloping concrete floors another great and well thought out question which is best answered at length. 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. The cause of these may be the same or may be different. Sloping floors verses sagging floors these terms are related and a sagging floor actually has a slope from each side of the sag.
Sloped concrete floors direct water away from houses or towards shower drains. Sagging floor issues often relates to framing issues or the loads that the floors are carrying. However if the second floor slopes along with the first floor then there could be a more serious structural cause such as foundation damage or settlement. Whether you are pouring a concrete floor for your shower or for another area such as your garage sloping a concrete floor directs water away from the higher areas of the floor.
There are several problems that can cause a sagging or sloping floor which is one of the reasons why fixing a sloping floor is difficult. The construction manual states that concrete slab floors should be poured so there is 3 3 4 of skirt board left exposed above the slab.