Building A Garage On An Existing Concrete Slab

Using a chalk line with red chalk snap a line that will mark the outside line of your shed.

Building a garage on an existing concrete slab.

Any structure that you build will be more stable when it is set on a solid foundation. Measure and mark on the existing concrete the points of your corners for your shed. The type of foundation or footings and slab you build your garage on will depend on your budget the size of the garage the grade and the soil conditions. Before you get started throwing up a shed on your concrete slab you ll need to give it a thorough inspection.

If you re fortunate enough to have a pre existing concrete slab in your yard then you are already halfway to building extremely solid storage shed. The first step in building the garage foundation is pouring the concrete which costs 140 per cubic yard. Pouring just a slab with a thickened perimeter is the least expensive and a perfectly acceptable option if you have good soil conditions not spongy. From this red line measure in the width of the sill plate 4 inches if you are using 2 by 4s 6 inches for a 2 by 6.

Concrete pad to be poured figure 3. If the area where you are planning to use the cinder blocks is already covered with a concrete pad you can easily build a cinder block wall right on top of the concrete. Figure 1 garage constructed on concrete pad. Figure 2 l concrete foundation anchor bolt.

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