1 MARCH 2000
(4) For rehabilitation, track should be regaged if the existing gage is less than 56-1/4 in. or greater
than 57 in.
f. Cost Estimates. For plans for major rehabilitation, cost estimates are usually based on costing the
major work items, with extra allowances for minor work at other locations and additional minor work within
the major work locations or work categories. When the rehabilitation plan is done in one stage, the cost
estimates must also serve for the contract plans and specifications. In this case, the cost estimate
breakdown must be more detailed.
7. FINAL PLANS AND SPECIFICATIONS.
a. Detailed Work Plan. For final (contract) plans and specifications, all work must be spelled out in
detail. If not previously done, thorough inspections should be conducted for all included facilities to
assure correctness of work requirements, work locations, and work and material quantities.
b. Marking Parts to be Replaced. At this time, all ties, rail, joint bars, bridge members, and other
components intended for replacement should be individually marked, as well as the limits for all work
locations. When marking defective parts, especially ties, bridge members, switch points, and frogs, those
items that are in marginal condition (less than 3 to 5 years additional life) should also be included (and
marked) for replacement.
c. Top-of-Rail Profiles.
(1) When ballast is added to the track, and the track is to be raised by 3 in. or more, top-of-rail
profiles (elevations along the top of the rail at 50 to 200-ft intervals) should be taken so the final surface
can be checked. These profiles will also help in estimating ballast quantities; this is especially useful if
existing track surface is poor, as many low areas will likely need to be raised more than average to
restore a smooth final surface.
(2) Initial top-of-rail profiles may be useful for track along loading docks to ensure proper car floor
height at the dock.
(3) Top-of-rail profiles should be taken wherever overhead clearances are tight.
d. Drainage Profiles and Cross Sections. Before final plans and estimates are made, ditch profiles and
cross sections should be taken to determine final ditch gradients and check earthwork quantities. These
profiles are also needed to specify the exact work to be done and to guide the contractor's work in the
e. Handling Scrap and Salvage Materials.
(1) Rehabilitation contracts and specifications should require that scrap rail and other track materials
be neatly stacked and/or bundled in a designated storage area for later disposal. Likewise, salvageable
rail and OTM should be separated by type and weight, stacked or containerized, and stored in a
designated area for reuse by the installation or shipment to another installation.