Fairbanks 12-1492 - 12-1496 A.A.R. Combination Railroad Track/MTS - Manual (Page 10)

04/12 10 50538 Rev. 7
1-C: Rails & Anti-Creep Devices
The Scale is designed to accept a 115 lb. rail with Foster #62 rail clip. The approach rails
and Scale Weigh Rail should be the same weight. The approach anchor bolts, approach rail
plates, rail clips, and anti - creep devices are all optional items. They can be supplied by
Fairbanks Scales when ordered as accessories, otherwise they are not supplied.
Positive means must be provided by others to prevent the creeping of the approach rails and
to maintain a clearance which shall be not less than 1/8 inches or more than 5/8 inches
between the approach rails and the weigh rails. Switch points are highly recommended for
this purpose. A minimum of seventy five (75) feet of tangent track at each approach is
required by the A.A.R.
50538-2
Rail
Weldment
Anti-creep devices are constructed of angle iron with a flat iron weldment to fit to the rail as
shown above, The rail is side drilled through its web and bolted to the anti - creep device,
effectively securing it from any movement.
The AAR Scale Specifications state that the rail on the approach and the weighbridge shall be
properly anchored to prevent creeping of the rails. This is done in order to maintain the prop-
er gap between the approach rail and the weighrail.
Rails should be miter cut at the ends of the weighrails and approach rails to assure a smooth
transfer of wheels in order to reduce impact loading to the scale.
NOTE: It is strongly recommended that any anti-creep device(s) be installed by qualified rail-
road maintenance and repair service personnel.
45
3/8 inch gap
1
2
50538-3