: 2 Ex. expansion factors... -> Table 4.7 Monthiy Expansion Factors for a Rural Pimary Road Mnh ADT MEF 1756 1975 Junary Fuhrury March l 100 1450 April May June July 100 200 400 Septenber 450 3750 Ocber 2500 November December LIS 1750 Total yeurly wlume A Mean wrdaly wleme 2 Table 4.5 Hourly Expansion Facton for a Rural Primary Road Volum Velum 600-7:5K) am 7:00-800am 600-700pm 7:00-R00pm 743 70 4200 46 2900 22.05 17.49 2 R00.00am s 22es 900-1000am 457 900-1000pm 10 1 1100-1200m 1200-100am 100-200am 200-300m IKD 1000-1100am 722 17.30 1100-1200pm 120 100pm 100-200p 200-30p 17.10 3L19 3431 241 739 1671 150 100 123.0 1477 12S 300-400am 400-500am 137.22 400-500pm 137 914 Total daly wlume120 Table 4.6 Dalv Expansion Factors for a Rural Primary Road Day of Werk Sunday Mondy Tunday Wedday Thunday Friday Suturday Viume DEF SIS 10,714 9722 7012 7.727 10,714 13125 11 5.74 S10 Total weekly wolume 75,122 4.5 Calculating AADT Using Expansion Factors A traffic engineer urgently needs to determine the AADT on a rural primary road that has the volume distribution characteristics shown in Tables 4.5, 4.6, and 4.7. She collected the data shown below on a Tuesday during the month of May. Determine the AADT of the road. 7:00-8:00 a.m. 8:00-9:00 a.m. 400 535 650 710 9:00-10:00 a.m. 10:00-11:00 a.m. 11:00-12 noon 650
: 2 Ex. expansion factors... -> Table 4.7 Monthiy Expansion Factors for a Rural Pimary Road Mnh ADT MEF 1756 1975 Junary Fuhrury March l 100 1450 April May June July 100 200 400 Septenber 450 3750 Ocber 2500 November December LIS 1750 Total yeurly wlume A Mean wrdaly wleme 2 Table 4.5 Hourly Expansion Facton for a Rural Primary Road Volum Velum 600-7:5K) am 7:00-800am 600-700pm 7:00-R00pm 743 70 4200 46 2900 22.05 17.49 2 R00.00am s 22es 900-1000am 457 900-1000pm 10 1 1100-1200m 1200-100am 100-200am 200-300m IKD 1000-1100am 722 17.30 1100-1200pm 120 100pm 100-200p 200-30p 17.10 3L19 3431 241 739 1671 150 100 123.0 1477 12S 300-400am 400-500am 137.22 400-500pm 137 914 Total daly wlume120 Table 4.6 Dalv Expansion Factors for a Rural Primary Road Day of Werk Sunday Mondy Tunday Wedday Thunday Friday Suturday Viume DEF SIS 10,714 9722 7012 7.727 10,714 13125 11 5.74 S10 Total weekly wolume 75,122 4.5 Calculating AADT Using Expansion Factors A traffic engineer urgently needs to determine the AADT on a rural primary road that has the volume distribution characteristics shown in Tables 4.5, 4.6, and 4.7. She collected the data shown below on a Tuesday during the month of May. Determine the AADT of the road. 7:00-8:00 a.m. 8:00-9:00 a.m. 400 535 650 710 9:00-10:00 a.m. 10:00-11:00 a.m. 11:00-12 noon 650
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question
Transcribed Image Text:1% rq l. .
Z Ex. expansion factors..
Table 4.7 Monthly Expansion Factors fora Rural Primary Road
Monih
ADT
MEF
Junuary
February
March
1350
1.756
1975
1615
1200
1450
April
May
June
July
Aagust
September
October
1600
LAKI
1700
1.394
2500
4100
450
0521
3750
2500
LIRS
1354
November
2000
December
Total yearly volume 2KAS
Mean average daily volume = 270
1750
Table 4.5 Hourly Expansion Factors for a Rural Primary Road
Hour
Volume HEF
Hour
Volume
HEF
600-70
700-800
294
426
4200
29.00
22.05
600-700 p.m
1662
17.49
20.38
489 2526
296 31.19
3431
743
706
R00-900 pm.
9:00-1000 pm.
100-1100 pm
11.00-1200am.
1200-190am.
R00-900am
9:00-10.00 am
1000-11.00 am.
11.00-1200 p.m
1200 100 pm
100-200 p.m.
2:00-30 pm.
300 400 p
400-S0 pm.
S00-600 pm.
Total daily volume = 12150
657
722
667
17.10
IK52
241
51.34
IK71
16.71
739
K32
100-200am
200-300am
300-400am.
400-500am.
500-600am
150
12150
137.2
1430
9014
144
100
90
14.77
12AS
961
92
137
Table 4.6 Duily Expansion Factors for a Rural Primary Road
Day of Week
Volume
DEF
9S15
7.012
7,727
Sunday
Monday
Tuenday
Wednesday
Thursday
Friday
Saturday
Total wookly volume = 75,122.
10,714
9722
11,413
10,714
13,125
11.
7.012
5.724
4.5 Calculating AADT Using Expansion Factors
A traffic engineer urgently needs to determine the AADT on a rural primary road
that has the volume distribution characteristics shown in Tables 4.5, 4.6, and 4.7. She
collected the data shown below on a Tuesday during the month of May. Determine
the AADT of the road.
7:00-8:00 a.m.
400
535
650
710
8:00-9:00 a.m.
9:00-10:00 a.m.
10:00 -11:00 a.m.
11:00-12 noon
650
II
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