GRASSCRETE®

By Bomanite Corporation

GRASSCRETE® is a cast-in-place, monolithic, continuously reinforced grass/concrete porous pavement system. It can be used anywhere an impervious paving method is used, e.g. driveways, parking lots, access routes, embankments, drainage ditches, storage areas for heavy materials and vehicles, etc.

ADDITIONAL DATA ABOUT GRASSCRETE®:

1. Gross Coverage. Surface area is 47% concrete and 53% hole. Gross usually covers much of the concrete in areas not subject to regular vehicle traffic.

2. Adjoining Edges. All adjoining hard surfaces must be abutted at I " below to allow for topsoil and growth of grass.

3. Maintenance. GRASSCRETE® requires watering and mowing as would be normal for any lawn. Irrigation must be provided in dry climates to keep the grass healthy. Mowing needs are less in areas of frequent traffic. The grass roots are protected by concrete and are not damaged by vehicle use.

4. Alternate to Planting Grass. Holes may be filled and covered with crushed stone, seashells, etc. to provide drainage.

5. Drainage. GRASSCRETE® drains at about the same rate as would an ordinary lawn in the same location. The presence of concrete has little effect on the drainage; the soil and the slope are the controlling factors. A test report by an independent laboratory on infiltration rates is available upon request.

6. Load Test Report. A test report by an independent laboratory on a fire truck load test is available upon request. A 33 ton Grumman fire apparatus with outriggers was tested with a horizontal extension of 100 feet of its man-lift with 800 pounds of weight in the man-lift. (Note that GRASSCRETE® is a continuously reinforced monolithic slob, and therefore has flexural strength, unlike unit pavers.)

7. Fire-Lane Access. It is recommended that a 12" border be used at perimeters of GRASSCRETE® monolithic to GRASSCRETE® driving surface.

8. Alternate Reinforcement. It is acceptable to substitute steel reinforcing bar of equivalent reinforcement value for the welded wire steel fabric. However, this will usually raise the cost because of the additional labor required.

9. Concrete Volume. GRASSCRETE® is 60% concrete by volume and 40% void area, not including widened edges and solid borders.

10. Slope Paving. GRASSCRETE® can be readily installed on slopes as steep as 3: 1. Steeper slopes are more difficult and costly and 2:1 is the steepest that could be possible.

11. Curved Areas. GRASSCRETE® formers are square and are used most effectively in rectangular areas free of obstruction. GRASSCRETE® may be used in curved areas and areas having obstructions, but there may be some design limitations and increases in 6 nit costs.

NOTE: GRASSCRETE® is not designed to be a finished surface.

IMPORTANT NOTE: This specification supersedes all GRASSCRETE® specifications published prior to July 1, 1998.

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