Section 1: SCOPE AND RELATED CRITERIA
Scope. This chapter covers criteria for the design of naval
facility trackage. Included are roadways, ballast, ties, rails, track grade,
turnouts, crossovers, highway crossings, sidings, warehouse trackage, track
scales, and yards. For portal crane trackage, see Chapter 2 of this handbook.
Design Criteria Usage. The criteria presented herein are
applicable to the design of new trackage and for major rehabilitations. Where
conditions will not permit their use prior approval is required from
NAVFACENGCOM Headquarters. Requirements for maintenance, minor repair, and
replacement of existing trackage, which is being successfully used, are
presented in other appropriate NAVFAC Maintenance Manuals and instructions and
are not required to be in accordance with these design criteria.
Cancellation. This handbook, MIL-HDBK-1005/6, dated 30 April 1992,
cancels and supersedes NAVFAC DM-5.6 dated November 1981.
Additional Criteria. A list of criteria documents related to Civil
Engineering is presented in the front of this handbook. See MIL-HDBK-1025/1,
Piers and Wharves for criteria on rail supports (deck fittings), wheel loads,
and trackage location and arrangement on waterfront structures (deck structure
design). All documents referenced in this handbook are listed in the
References section located at the end of this handbook. Unless specifically
stated otherwise, use the current editions of all referenced documents.
Policy. When planning track layouts, railroad trackage should be
separated, wherever possible, from portal crane trackage because, apart from
the similarity of the rails, the requirements for portal crane trackage are
completely different from railroad trackage.
Provide separation to insure:
Where Separation is Possible.
Maximum efficiency of both types of trackage.
Elimination of switching hazards.
Free passage of rolling stock under cranes.
b) Where Separation is Impossible. Where both cranes and rolling
stock utilize a common rail, the other railroad rail shall be placed between
the crane rails.
Standards in railroad trackage design
Railroad Trackage Standards.
a) American Railway Engineering Association (AREA) Manual for
b) AREA Portfolio of Trackwork Plans, (companion volume to AREA
Manual for Railway Engineering); and
c) Military Standards (MIL-STD) as listed.
State and local
regulations should be observed where practicable.