Costs and Personnel Time for EWF Installation
The following summary of costs and time estimates is not meant to be definitive. Markup for contractors or other overhead and profits is not included. No costs were incurred for edging since treated wood edging was already installed. The estimates do not include the significant amount of personnel time required to remove the sand from the playground.
| Quantity of material | ||
| EWF | 120 yd3 uncompacted | |
| Vitri-Turf | 35 gal | |
| Soil-Sement | 80 gal (45% solids) | |
| Market value of material | ||
| EWF | $21/yd uncompacted (incl. shipping) | $2,520 |
| Vitri-Turf | $18/gal (100% solids, 11 lb/gal) | $630 |
| Soil-Sement | $7/gal (45% binder/55% water) | $560 |
| Drainage system (rock, geotextile, and drainage) |
+ $800 |
|
| $4510 | ||
| Equipment and tool rental (market value) | $1500 | |
| Personnel time | |
| Drainage system installation, 25 h @ $15/h | $375 |
| Unbonded EWF installation, 60 h @ $10/h | 600 |
| Bonded surface installation, 24 h @ $15/h | 360 |
Installation of the two surface treatments was completed during one work day. Approximate effort for installation of 300 ft2 of each material (600 ft2 total) was 24 h (four people for 6 h).
| Summary of costs for 0.3-m- (12-in.-) depth surface treatment | ||||
| Cost ($/ft2 ) | ||||
| Play surface | ||||
| Component | Labor | Materials | Paid labor | Volunteer labor |
| Drainage system | 0.20 | 0.40 | -- | -- |
| EWF (0.3 m, 12 in.) | 0.30 | 1.17 | 2.07 | 1.57 |
|
Vitri-turf(38 mm, 1.5 in.) |
0.60 | 2.10 | 4.77 | 3.67 |
| Soil-sement (63.5 mm, 2.5 in.) | 0.60 | 1.87 | 4.54 | 3.44 |
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