UFC 3-260-02
30 June 2001
Conventional Flexible
Pavement Section, mm (in.)
Layer Description
102 (4)
Bituminous surface
254 (10)
Aggregate base course
737 (29)
Aggregate subbase course
1,093 (43) Total thickness
(b) Alternative design 2. A 102-millimeter (4-inch) surface over cement stabilized base
with unbound aggregate subbase is required.
Conventional Thickness, mm (in.)
Stabilized Section Thickness, mm (in.)
Surface
102 (4)
Surface
102 (4)
Base
254 (10)
CT base 254/1.5 (10/1.5) =
169 (6.7)
Subbase
737 (29)
Subbase
737 (29)
Total
1,093 (43)
Total
1,008 (39.7)
CT = Cement treated
(c) Alternative design 3. A 102-millimeter (4-inch) surface over unbound aggregate base
with lime stabilized subbase is required.
Conventional Thickness, mm (in.)
Tentative Stabilized Section Thickness, mm (in.)
Surface
102 (4)
Surface
102 (4)
Base
254 (10)
Base
254 (10)
Subbase
737 (29)
Lime stabilized subbase 737/1.2 (29/1.2) = 614 (24)
Total
1,093 (43)
Total
990 (38)
(d)
Alternative design 4. Bituminous base and lime-stabilized subbase are required.
Conventional Thickness, mm (in.)
Tentative Stabilized Section Thickness, mm (in.)
Surface
102
(4)
Surface
102 (4)
Base
254 (10)
Bituminous base 254/1.5 (10/1.5) =
169 (6.7)
Subbase
737 (29)
Lime stabilized subbase 737/1.2 (29/1.2) = 614 (24)
Total
1,093 (43)
Total
882 (34.7)
10-7
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