Fairbanks 2000 SERIES Rocker Column Railroad Scale - Manual (Page 11)

03/10 11 50614 Rev. 5
1-E: Foundation Construction & Installation
Use only certified prints that are marked for the particular installation, customer, and scale.
All the dimensions indicated on the certified prints must be rigidly and faithfully followed dur-
ing all phases of construction. There is very little tolerance for misplacements and mistakes.
Pier heights are especially critical as there must be enough space for finishing grout under all
stands (per certified drawings) while rails on the scale weighbridge and approach rail must be
absolutely level.
Placement of foundation bolts is absolutely critical to the successful installation of the scale.
The use of a template or form that matches the design called for can be used. Foundation
bolts must NOT be installed at an angle, too deep, or too shallow. Very close tolerances must
be met on all aspects of pit construction.
1-F: Grout Plates
The Grout plates are the foundation upon which the scale structure rests, and their level,
accurate position is basic to the entire structure. Base plates must be installed at proper
height and in the same plane. All grout plates must be level within .015" per foot. All pier bolts
must have enough height to allow vertical adjustment of the base plate's, but not so high as
to interfere or to have insufficient depth into the pier.
1-G: Rocker Column Loadcells
The 110,000 lb capacity compression loadcells are designed to meet the most stringent
accuracy requirements. They offer total stainless steel construction and complete hermetic
sealing, making them suitable for use in the toughest of environments. They are rated IP 68.
The load cell's Rocker Column design permits it to be self aligning, always returning to its
original plumb, square, and level position after loading and unloading disturbances.
1-H: Ground Rods:
Ground rods are essential in providing protection to the electronic components and loadcells
from both lightning surges and static discharges. Pit ground rods shall be tied to the founda-
tions steel reinforcement rod (rebar) prior to pouring, and shall protrude 4 inches above the
pit floor.
Ground rods for approach rails shall be tied to the rebar assembly. There are five (5) rods
with the locations specified as below: