Project step by step 16 prepare the site.
Building a concrete wall on concrete slab.
If this is the case drill through the curb and into the slab with a roto hammer every few feet.
A poured wall is much stronger and generally last many more years than a block wall.
The depth and size of the foundation will vary depending on the size of the concrete block wall and the weight it must support but a typical freestanding wall requires a foundation that is about twice as wide as the wall itself and which extends about 1 foot down below the frost line.
Your local building code may call for the wall to be anchored to the slab with threaded rods.
How to build a wall on a concrete slab step 1.
Run a chalk snap line.
Contact your local building department to see whether a permit is required and how close to the lot.
Stake and brace the side form.
If you want to build a concrete retaining wall you should consider pouring the wall rather than making it out of concrete blocks.
Pouring a concrete retaining wall is not that difficult and this easy to follow how to guide will show you just what to do.
Remove the curb and clean the slab thoroughly with a wire brush.
Position the snap line across the marks that indicate one of the wall s ends and snap a line to lay out the.
All concrete block walls must rest on a sturdy foundation of poured concrete.
Then fill the holes in the slab with hydraulic cement.