How To Install Grass Block Pavers

ane. Excavate and compact the soil sub-course.

2. Place and compact the gravel base (Effigy 1). The gravel base of operations should extend beyond the Turfstones a min. of vi? where possible. For residential employ, 6 in. base is recommended. For vehicle loads and traffic, a minimum of 8 in. Use filter cloth for low CBR soils (less than 4%), those with high clay and silt contents, soils in high water table areas, or soils in depression lying areas subject to flooding. Cloth should exist fine enough to prevent migration of soil into the base. Woven fabrics are preferred over non-woven materials when the cloth is placed straight nether the sand layer where subjected to traffic.

3. Spread and screed the bedding sand (grading to arrange to ASTM C33). Practise not apply masonry sand. Sand should exist screeded to proper elevations and take compatible moisture content prior to placing the Turfstone pavers. The screeded sand should not exist disturbed.

4. Identify the Turfstones on bedding sand. Turfstones should be placed with the minimum articulation spacing of at to the lowest degree i/xvi?.

v. Vibrate the Turfstones into the sand. Use a high-frequency (3500-5000 cycles per second), depression amplitude plate vibrator. A rubber mat should exist attached to the vibrator to protect the grids from cracking and chipping. Plywood sheets placed on the Turfstones tin be used for protection if a rubber mat is not available.

half dozen. Spread topsoil or gravel into the Turfstones and vibrate again. Grass seed and fertilizer can be mixed with the topsoil or broadcast directly on the surface and swept into openings and joints.

7. Vibrate again after voids are total. The terminal level of topsoil should exist ane/2? to three/4? below the superlative surface. This will lend some protection to the grass from tires as it grows.