© 2014 Foundation Supportworks
®
,
Inc.
All Rights Reserved
p 268
APPENDIX 3B
DRIVE STAND SPECIFICATIONS
Chapter 3
Hydraulically-Driven Push Piers
Model 288 Drive Stand Specifications
when used with the GRAY
(4)
Drive Cylinder (FS425DC)
Compatible Brackets
(2)
:
FS288B, FS288BV,
FS288BL, FS288BFM
Drive Cylinder
(4)
(FS425DC):
Stroke = 22”
Cylinder action = double
Bore =
Ø
4.25”
Hydraulic area = 14.18 in
2
Max operating pressure = 4,000 psi
Drive Cylinder Adaptor
(3)
:
FSDCA (reversible)
Drive Stand Hardware
(1)
:
(1) -
Ø
3/4
” x 12” long coil rod with nuts
(2) -
Ø
1” x 15” long L-pins
Drive Stand Rated Drive Load
(2)
56.7 kips
Hydraulic
Pressure
(psi)
Drive
Force
(2)
(kips)
Hydraulic
Pressure
(psi)
Drive
Force
(2)
(kips)
200
2.8
2,600
36.9
400
5.7
2,800
39.7
600
8.5
3,000
42.6
800
11.3
3,200
45.4
1,000
14.2
3,300
46.8
1,200
17.0
3,400
48.2
1,400
19.9
3,500
49.7
1,600
22.7
3,600
51.1
1,800
25.5
3,700
52.5
2,000
28.4
3,800
53.9
2,200
31.2
3,900
55.3
2,400
34.0
4,000
56.7
(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 “maximum drive force during installation” values specified for the
bracket being installed (see Bracket Specifications and Capacities).
(3)
Drive cylinder adaptor FSDCA is a reversible adaptor that is compatible with both PP288 and PP350 push pier systems. Assemble the
adaptor to the cylinder rod in the appropriate orientation for the corresponding pier size being installed.
(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.
