ETL 1110-l-141
29 Jan 88
Action to be Taken.
5.
a. For roads and streets, open storage areas and parking areas, the
thickness design curves attached in Enclosure 1 will be used.
b. The thickness design curves for conventional concrete airfield
pavement in TM
88-6, Chap. 3, will be used also to design RCCP
airfields, with one modification. To account for no load transfer at
joints in RCCP, multiply the
strength by 0.75, and use the product
strength to enter the thickness design curves. This
as the design
will in effect remove the load transfer assumption from the curves.
Transverse contraction joints, when needed, should be spaced at 30
C.
to 60 feet, primarily to create a more aesthically pleasing and easily
maintained joints. The
are typically made 12 to 20 hours or later
after compaction and penetrate to one-third the pavement thickness.
This letter will have routine application as defined
in paragraph c, ER 1110-345-100.
FOR THE COMMANDER:
Encl
Chief, Engineering Division
Directorate of Engineering
and Construction
2
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