12. Refer to Figure II-1 attached. A flexible pavement is to be evaluated according to the AASHTO 1972 design guide. The existing pavement has a weighted structural number=3.4, a regional factor=2.0, and a soil support value=4.5. What would be the approximated number of daily equivalent 18-kip axles to be allowed on this road for a 20-year analysis period? a. 10 b. 33 c. 100 d. 1490
12. Refer to Figure II-1 attached. A flexible pavement is to be evaluated according to the AASHTO 1972 design guide. The existing pavement has a weighted structural number=3.4, a regional factor=2.0, and a soil support value=4.5. What would be the approximated number of daily equivalent 18-kip axles to be allowed on this road for a 20-year analysis period? a. 10 b. 33 c. 100 d. 1490
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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12. Refer to Figure II-1 attached. A flexible pavement is to be evaluated according to the AASHTO 1972
design guide. The existing pavement has a weighted structural number=3.4, a regional factor=2.0, and a
soil support value=4.5. What would be the approximated number of daily equivalent 18-kip axles to be
allowed on this road for a 20-year analysis period?
a. 10
b. 33
c. 100
d. 1490
Transcribed Image Text:Figure II-1
Design Chart for Flexible Pavements, Pt - 2.5
SUPPORT VALUE
IT!!!
5 - SOIL
TOTAL EQUIVALENT 18-KIP SINGLE
AXLE LOAD APPLICATIONS, THOUSANDS
४४
-10
500
1,000
SN
-100
3,000
10,000
20,000 3,000
-2,000
-500
DAILY EQUIVALENT 18-KIP SINGLE
AXLE LOAD APPLICATIONS
(20 year analysis period)
-1,000
SN-WEIGHTED
STRUCTURAL NUMBER
REGIONAL FACTOR
STRUCTURAL NUMBER
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