| DEPTH OF TRENCH (FEET) |
WALES | HYDRAULIC CYLINDERS | TIMBER UPRIGHTS | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| VERTICAL SPACING (FEET) |
*SECTION MODULUS (IN³) |
WIDTH OF TRENCH (FEET) | MAX. HORIZ. SPACING (ON CENTER) |
||||||||
| UP TO 8 | OVER 8 UP TO 12 | OVER 12 UP TO 15 | SOLID SHEET |
2 FT. | 3 FT. | ||||||
| HORIZ. SPACING |
CYLINDER DIAMETER |
HORIZ. SPACING |
CYLINDER DIAMETER |
HORIZ. SPACING |
CYLINDER DIAMETER |
||||||
| OVER 5 UP TO 10 |
4 | 3.5 | 6.0 | 2 IN. | 6.0 | **2 IN. | 6.0 | 3 IN. | 3x12 | --- | --- |
| 7.0 | 6.5 | 2 IN. | 6.5 | **2 IN. | 6.5 | 3 IN. | |||||
| 14.0 | 10.0 | 3 IN. | 10.0 | 3 IN. | 10.0 | 3 IN. | |||||
| OVER 10 UP TO 15 |
4 | 3.5 | 4.0 | 2 IN. | 4.0 | **2 IN. | 4.0 | 3 IN. | 3x12 | --- | --- |
| 7.0 | 5.5 | 3 IN. | 5.5 | 3 IN. | 5.5 | 3 IN. | |||||
| 14.0 | 8.0 | 3 IN. | 8.0 | 3 IN. | 8.0 | 3 IN. | |||||
| OVER 15 UP TO 20 |
4 | 3.5 | 3.5 | 2 IN. | 3.5 | **2 IN. | 3.5 | 3 IN. | 3x12 | --- | --- |
| 7.0 | 5.0 | 3 IN. | 5.0 | 3 IN. | 5.0 | 3 IN. | |||||
| 14.0 | 6.0 | 3 IN. | 6.0 | 3 IN. | 6.0 | 3 IN. | |||||
| OVER 20 | For
applications other than those listed in the tables, refer to CFR
1926.652(c)(2) for use of manufacturer's tabulated data. |
||||||||||
* Consult product manufacturer and/or qualified engineer for Section Modulus of available wales.
** 2-inch diameter cylinders, at this width, shall have structural steel tube (3.5 x 3.5 x 0.1875) oversleeves, or structural oversleeves of manufacturer's specification, extending the full, collapsed length.
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