
3.1 Subsurface Bed Design Example
Final Dimension Layout
(Note: System layout and number of rows will vary based on site constraints)
A42
Basal Area Length:
97 ft
Basal Area Width:
14 ft
Minimum Number of Units:
48 A42 Modules
Center to Center Spacing:
7 ft
Edge to Center Spacing:
3.5 ft
Designed Basal Area:
1,358 ft
2
B43
Bed Length:
81 ft
Bed Width:
17 ft
Minimum Number of Units:
40 B43 Modules
Center to Center Spacing:
8.5 ft
Edge to Center Spacing:
4.25 ft
Designed Basal Area:
1,377 ft
2
FIGURE 9: PLAN VIEW – 600GPD – A42 – BED SYSTEM – ≤ 0.5% SLOPE
SPECIFIED SAND
97'
96'
14'
3' 6"
7'
DISTRIBUTION BOX
FIGURE 10: CROSS SECTION VIEW – 600 GPD – A42 – BED SYSTEM – ≤ 0.5% SLOPE
SPECIFIED SAND
3.5'
7'
3.5'
12" MIN - 19" MAX
OF COVER SOIL
MATERIAL
14'
13"
ORIGINAL GRADE
FINAL GRADE
Содержание GSF A42
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