TM 5-818-1 / AFM 88-3, Chap. 7
U. S. Army Corps of Engineers
Figure 16-5. Allowable bearing pressure on cohesionless soil layers stabilized by vibroflotation.
Table 16-3. Vibroflotation Patterns for Isolated Footings for an Allowable Bearing Pressure.
Square Footing
Vibroflotation
Center to Center
Size, ft
Points
Spacing, ft
Pattern
4.0
1
---
---
4.5-5.5
2
6.0
Line
6-7
3
7.5
Triangle
7.5-9.5
4
6.0
Square
10-12
5
7.5
Square + 1
@ Center
U. S. Army Corps of Engineers
16-13
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