Table D-1.3
Aluminum Hydraulic Shoring
Waler Systems for Soil Type B
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 8.0 2 IN. 8.0

2 IN.

 8.0 3 IN. --- --- 3x12
7.0 9.0 2 IN. 9.0

2 IN.

 9.0 3 IN.
14.0 12.0 3 IN. 12.0 3 IN. 12.0 3 IN.
OVER 10
UP TO 15		 4 3.5 6.0 2 IN. 6.0 2 IN. 6.0 3 IN. --- 3x12 ---
7.0 8.0 3 IN. 8.0 3 IN. 8.0 3 IN.
14.0 10.0 3 IN. 10.0 3 IN. 10.0 3 IN.
OVER 15
UP TO 20		 4 3.5 5.5 2 IN. 5.5 2 IN. 5.5 3 IN. 3x12 --- ---
7.0 6.0 3 IN. 6.0 3 IN. 6.0 3 IN.
14.0 9.0 3 IN. 9.0 3 IN. 9.0 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.
For trench depths in excess of 20 feet, refer to CFR 1926.652(c)(2) and CFR 1926.652(c)(3).

*Consult product manufacturer and/or qualified engineer for Section Modulus of available wales.

Return to OSU Trenching/Shoring Manual