CMU Walls

Your home is starting to grow.

The one of the most important steps is planning where to store the CMU blocks. A standard 8 x 8 x 16 block weighs between 30-35 pounds. The block mason needs to move blocks a minimal distance to perform the job easily.

Sills and lentils are an integral part of the block laying operation. They support the windows indoors so that the blocks above are supported the way the foundation supports the walls. Blocks and sills are precast to the dimensions plus a given amount based on the number of windows that will be set in the future. As more blocks are laid more storage room will be required.

As the walls continue to go up the lentils will be set in place, and they will require support while the concrete is drying. The walls and lentils will be filled with rebar and some openings will purposely remain in the lower part of the wall to make sure the concrete fill is solid.

Your new first floor is now taking shape, it will be a large open area waiting for trusses and interior walls. If this is a multi-story building your general contractor may erect scaffolding to carry the walls up beyond the first floor.

The block laying portion of the project requires a great deal of coordination. With a team that works well together the chances of having a quality job are high. There are more than just concrete block masons involved. Individuals with expertise in rebar and sill placement as well as individuals that construct forms for opening are all key members of the team.

I have attached pictures that will give you an idea of the steps involved. Next time we're going to talk about trusses and what to expect.

Stay tuned, there's a lot more to come,

Dik Muller