How To Build A Concrete Slab Roof

The steel bar joists are l shaped so the blocks have a flange to sit on.

How to build a concrete slab roof.

Step 5 placing the concrete slabs. Tie two bands of 1 2 in. Understand the gravity of the project and take the necessary safety precautions. After making sure that your steel joists are laid you need to place the concrete slabs one at a time and according to the size that you made from the steel joists.

Key steps to constructing a concrete roof slab. After placing the headers and tubes at over the slab pave the roof slab ensure all tubes are placed well and compact with concrete mixture so that after paving the roof will look like a normal concrete floor. Step 1 taking safety precautions. Install a row of concrete blocks on their faces with the open ends facing towards the sides.

Once excavation and piles are complete a concrete cap beam is poured across the top of the piles. Then a concrete mixture is poured spread through the framework and reinforced with steel bars which serve as a kind of skeleton for the cured concrete. Building a concrete ceiling will increase the phonic insulation and durability of your house. This will help in two ways.

Step 3 placing the steel joists. Lay the concrete slabs. Next apply a coat of concrete primer to the entire roof. The cap beam evenly distributes the load of the roof slab to the piles below.

These frames can either be removable concrete forms or stay in place insulating concrete forms which simply become a part of the finished roof. Use a metal cutting blade or disc in a reciprocating saw circular saw or grinder to cut the rebar. Rest the blocks between the 7 inch joist pairs up against each other. But these advantages come together with a few drawbacks such as the higher cost of the project or the fact that pouring a concrete ceiling may take up to several months until you can actually build the walls and the roof.

Step 6 working. Tie in the rebar to strengthen the slab cover the fill with a layer of 6 mm plastic sheeting. Start at one end and paint yourself into a corner. How to build a flat concrete roof.

Then switch to a paintbrush. The joists are basically to provide a foundation for the concrete blocks. Steel reinforcing rods rebar to stakes set about four inches from the perimeter of the forms. Make sure you wear all.

The air gap in the tubes will act a insulation since heat travel through air will be less. Step 4 coat with primer. Use a single piece wherever you can and make sure it is centered over the seam when you put it down.