2017-11-29_REVISION - C1981038

• Permit No: C1981038
• IBM Index Class Name: Revision
• Doc Date: 11/29/2017
• Doc Name: Report of Culvert Condition
• From: Steven K. Harper, LLC
• To: DRMS
• Type & Sequence: RN7
• Email Name: CCW
• Media Type: D
• Archive: No

Bridge No:Bowie Resources PID Number:
SFN:N/A Project No:
Year Built:~1975 Load Rated By:JR Date:
Bridge Type:Corrugated Metal Pipe Checked By:LH Date:
LRFR of In-Service, Corrugated Metal Pipe Structures
N/A
11/16/2017
11/16/2017
The surface tire contact area for HL-93 loading (per AASHTO LRFD 3.6.1.2.5):
WT = 20" =1.67 ft
LT = 10" =0.83 ft
The surface tire contact area for Ohio Legal Trucks (per AASHTO LRFD C3.6.1.2.5 Guideline):
WT (in) =P/0.8
LT (in) =6.4γ(1+IM/100)
where, p = wheel load (kips)
1.30
So,2F1 3F1 4F1 5C1
SU4, SU5,
SU6, SU7
P "heavy axle" wheel load with
madj (kips) =10.8 9.2 7.6 9.2 9.2
WT (ft) =1.13 0.96 0.79 0.96 0.96
LT (ft) =0.69 0.69 0.69 0.69 0.69
Distribution of wheel loads through earth fills (per AASHTO LRFD 3.6.1.2.6):
for HL-93 Design Truck:
WD = 1.67+φEH=13.67 ft
LD = 0.83 + φEH =12.83 ft
for Ohio Legal Trucks and SHVs:
2F1 3F1 4F1 5C1
SU4, SU5,
SU6, SU7
WD = WT + φEH =13.13 12.96 12.79 12.96 12.96
LD = LT + φEH =12.69 12.69 12.69 12.69 12.69
IM = dynamic load allowance percent
γ = Load Factor for Ohio Legal Loads γ LL =
Where, WT = Tire contact width, LT = Tire contact length, WD = Distributed load width, LD = Distributed load length
H
Distributed Load Area
P PL
WD WD LD
W WD
WD (total)
Distributed Load Area
(no overlapping)
Wheel loads distributed area
(overlapping perpendicular to the direction of travel)
P P
P P
Wheel Spacing
L
Saxle
LD
W
P
Axle loads distributed area
(overlapping along the direction of travel)
Revised by ODOT 5/2016 Page 7 of 10