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p 266
APPENDIX 3B
DRIVE STAND SPECIFICATIONS
Chapter 3
Hydraulically-Driven Push Piers
Model 238 Drive Stand Specifications
when used with the GRAY
(4)
Drive Cylinder (FS425DC)
Compatible Brackets
(3)
:
FS238B
Drive Cylinder
(4)
(FS425DC):
Stroke = 22”
Cylinder action = double
Bore =
Ø
4.25”
Hydraulic area = 14.18 in
2
Max operating pressure
(2)
= 4,000 psi
Drive Cylinder Adaptor:
FSDCA238
Drive Stand Hardware
(1)
:
(1) -
Ø
3/4
” x 12” long coil rod with nuts
(2) -
Ø
5/8
” x 12” long coil rods with nuts
(4) - 1-
1
” Flanged Pins
Drive Stand Rated Drive Load
(2,3)
30.0 kips
Hydraulic
Pressure
(psi)
Drive
Force
(2,3)
(kips)
Hydraulic
Pressure
(psi)
Drive
Force
(2,3)
(kips)
100
1.4
1,300
18.4
200
2.8
1,400
19.9
300
4.3
1,500
21.3
400
5.7
1,600
22.7
500
7.1
1,700
24.1
600
8.5
1,800
25.5
700
9.9
1,900
27.0
800
11.3
2,000
28.4
900
12.8
2,100
29.8
1,000
14.2
2,115
30.0
1,100
15.6
1,200
17.0
(1)
Drive stand should never be operated without all hardware components firmly in place.
(2)
Do not operate at pressures that produce drive forces in excess of the drive stand’s rated drive load. Max operating pressure of the drive
cylinder produces forces that exceed this value and is given for informational purposes only.
(3)
Do not operate at pressures that produce drive forces in excess of the “maximum drive force during installation” values specified for the
bracket being installed (see Bracket Specifications and Capacities).
(4)
Note that the mounting flange dimensions are different between the RED and GRAY cylinders (FS35DC and FS425DC) and thereby require
the use of unique top fixture weldments that correspond to the appropriate drive cylinder.