Question: Do I Need Footings?

Footers must be a minimum of 24 inches deep.

There must be a minimum of 6 inches of concrete in the footer, 2 story home-8 inches deep.


Rebars are required in dwellings..

How do you build a floating concrete slab?

Below Steps To Build Floating SlabDetermine the area to your floating slab and then mark the four corners with 3-feet metal stakes.Determine the height of the top surface of the concrete slab. … Measure out two feet in the perimeter (laterally) and mark off this area for drainage.More items…•

Do stair stringers need support?

Yes, the stringers need to be supported along their length, but they can span a few feet too, depending on 1) the width of the stairs, 2) the number of stringers, and 3) size of riser board. … 2) More stringers can span further because they’ll be carrying less load.

How deep and wide do footings need to be?

Depth: Footings should extend to a minimum depth of 12 inches below previously undisturbed soil. Footings also must extend at least 12 inches below the frost line (the depth to which the ground freezes in winter) or must be frost-protected. Width: Footings should have a minimum width of 12 inches.

Can you build a garage on a floating slab?

Answer: A floating slab foundation is a foundation which doesn’t have concrete footings. This allows for the garage floor to just be poured over gravel and the existing ground. … As a result, when we build a garage, we always build on a foundation which has footers which are poured at least 38” below the finish grade.

What happens after footings are poured?

If you’re building a house with a slab foundation, holes are dug for the footings that provide support, then forms are added and the concrete for the footings is poured. … Afterward, the basement floor and walls are formed and the concrete is poured. The next step is waiting for the concrete to cure.

How deep should footings be for a 6 foot wall?

A concrete footing should be 100mm deep by 300mm wide if the footing is for a free standing wall. The footing should be increased to 150mm deep and 450mm wide if the wall being built is a retaining wall.

How do you calculate footing size?

How to Calculate Footing SizeDetermine the width and length of the cement slab in inches.Divide the width by 12 to convert it to feet. … Divide the length by 12 to convert it to feet. … Determine the depth or thickness that is required for the footing in inches. … Multiply the width by the length and then by the depth.

Do deck stairs have to land on concrete?

Stair stringers should always land on a level and well-drained surface. If you are landing on a concrete pad or a patio, this should not be a problem. … A 3′ x 3′ level landing area is required at the base of all staircases. The ground may qualify if it meets the requirements.

Do all houses have footings?

Under every house is a foundation, and under most foundations are footings. Most of the time we take footings for granted, and usually we can: For typical soils, a common 16- or 20-inch-wide footing can more than handle the relatively light weight of an ordinary house.

How thick do footings need to be?

Eight inchesEight inches is the minimum thickness for a footing. Ten inches is better and twelve inches is highly desirable. The depth of the footing in the ground depends on: the local frost depth.

How deep should footings be for steps?

Entry Step FootingsFootings must be at least 42 inches in depth.They may be block, poured concrete wall or post footings.Also, the Landing of the steps, must be at least 36 inches from where it abuts (lies adjacent to) the house out to the first step.

How thick should a floating slab be?

Around the edge of the slab, the concrete forms a beam that is perhaps 2 feet deep. The rest of the slab is 4 or 6 inches thick. A 4- or 6-inch layer of gravel lies beneath the slab.

How do you build uneven ground steps?

Although building on top of ground that’s uneven can be challenging, you can succeed if you follow these basic tips:Use a Raised Platform Deck. One solution to building deck stairs on ground that slopes is building a raised platform deck. … Align the Stringers Correctly. … Cut Your Own Stringers. … Use Pressure Treated Wood.

Do steps need footings?

Contrary to entry steps, a set of lawn steps do not need footings because they are not attached to anything else with footings (eg. concrete sidewalk). If a set of lawn steps move due to frost heave or otherwise, the consequences do not justify the cost of installing footings.

Can you put footings under concrete slab?

edit – To put footings under the slab, you can cut holes wherever needed, excavate for footings (Sonotubes or concrete piers or similar) and then patch the concrete slab.

Do you need rebar in a garage floor?

No, rebar is not required. Garage floors are poured last. Generally the thickness is usually about 4″ minimum plus. Many builders will not use rebar, nor do many provide control cuts.

Does slab need footings?

All 3 types of slabs will need a footer and a slab of at least 4″ thick. The footers depth needs to be the depth of the frost line or as per local code, but no less than 12″ deep. … Slab Foundations Like all foundations, the slab starts with concrete footers poured 24 inches below projected finish grade.