Here are some other construction requirements:

1. Slab design needs a minimum 5¹/₂-inch thickness. Where used for emergency vehicle access roads, all edges must have solid concrete bands or borders a minimum of 6 inches wide. These are normally painted red.

2. Six-gauge welded wire mesh is required between 2 and 3 inches above the subgrade.

3. Physical expansion joints are necessary where the system abuts other concrete or structures.

4. Forms are placed on the subgrade, then concrete is placed level to the top of forms. Finish the surface with a rough broom texture (Figure 12-23). Notice the Grasscrete forms in the lower section of the photo. A grout pump and brooms are used to evenly distribute the concrete into the holes of the forms. Concrete can also be poured from a cement truck depending on the location of the project.

Photo Courtesy of: Bomanite Corporation

Figure 12-23 (left) Installing Grasscrete forms Figure 12-24 (below) The front displays finished Grasscrete system Photo Courtesy of: Bomanite Corporation

5. Remove forms after the concrete has hardened sufficiently. In Figure 12-24, a couple of workers in the back lift the forms using specialty tools designed for this purpose. The front displays the finished system.

6. No traffic of any kind should be allowed on the slab until 14 days after the concrete is placed, and only after soil is replaced in holes.

7. Soil movement and seeding should normally be done by a landscaping contractor. In the finished product, only the grass is visible.

Manhours – Again, Bomanite Grasscrete is installed by factory-trained, licensed contractors, so hire a subcontractor to handle this type of installation. For those who are interested, from a manhour standpoint figure 8 manhours for 2,000 square feet with a crew of six. This figure is based on all the prep work being completed first, and doesn't included soil movement or seeding.

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