We always pour at least 4 of concrete for basement floors. For a 6 inch slab therefore you would set your forms for a 6 inch thick slab. 13 minimum thickness of slab on the ground.
Below the concrete is a 6 inch pile of gravel covered by a plastic sheet to prevent excess moisture from reaching the slab.
Basement concrete slab thickness. Recommended thickness of concrete slabs. The international residential code irc 2012 which applies in my area states that. Frustrated i drilled in various areas to discover only 2 of concrete thickness even as little as 1 12 inches. Concrete slab thickness recommended thickness of concrete slabs.
Engineering toolbox resources tools and basic information for engineering and design of technical applications. Concrete slab on ground floors shall be a minimum 35 inches thick. Basement walls and bases are designed using the program tedds parameters for the retained soils. 5 6.
The basement slab will act as a prop to the base of the basement walls. Ubc recommends minimum thickness of concrete floor slabs supported directly on the ground to be 89mm whereas bcgbc4010a apply structural principles to residential low rise constructions determined minimum thickness to be 100mm. Foundation how house construction works howstuffworks. Basement concrete slab thickness.
Dropping the level of a basement floor jlc. This home will have poured basement walls over the footings so the basement slab isnt bearing the weight of the house walls. It will be designed for either uplift due to water pressure below or as a clear span as appropriate. Dropping the level of a basement floor jlc.
Hardwood floor over a concrete slab concrete basement flooring benefits lawriter oac 4101 8 4 01 foundations fixing concrete basement floor. Search is the most efficient way to navigate the engineering toolbox. 6 8 inches 015 02 m side walks barn and granny floors. The slab itself is usually 4 6 inches thick.
What problems will this cause and is 3 code for slab thickness. The slab will be formed in reinforced concrete. It sounds like the sub base wasnt properly compacted hence the vibration when you stomp on the concrete. Im not sure what code is in your area.
On march 10 2019 by amik. How to pour a basement slab. Today with the plus side of the tolerance gone a slab can be built to satisfy the specification although as noted in the ascc position statement based on the variations in thickness with typical slab constructioneven using a laser screedyou would need to plan for an average thickness 1 inches thicker than the minimum in order to be statistically confident of meeting the specification.
