Att 06_Load Rating (230603).pdf
PDF 2 MB Posted
- Attached to
- Bog Dam 4 Bridge replacement Federal contract opportunity
- Solicitation number
- 12445524R0008
- Issued by
- Department of Agriculture Forest Service
About this file
This document is a Bridge Rating Summary and Load Rating Report for a bridge replacement project. The report provides a detailed analysis and load rating calculations for a new steel girder bridge with a timber deck, designated as the Replacement - Bog Dam 4_15-7.9_0922 bridge.
The key details include:
- The bridge has a span length of 39.17 feet and utilizes a W24x76 steel girder superstructure.
- The load rating was performed using the Load and Resistance Factor Rating (LRFR) method for various standard and legal vehicles, including the HL-93 design truck, Type 3, Type 3S2, Type 3-3, and various single-unit trucks.
- The controlling rating factors range from 1.05 to 2.59, with the NRL (Notional Rating Load) truck having a rating factor of 1.37 and a safe load capacity of 54 tons.
- The report includes detailed calculations and analysis for dead loads, live loads, stresses, resistance factors, and other engineering parameters.
View the file
Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| Sol_12445524R0008.pdf | ||
| Att 01_Schedule of Items (240614).docx | DOCX document | |
| Att 05_Project Location Map (240326).docx | DOCX document | |
| Att 08_Brass Girder (230428).pdf | ||
| Att 03_FSSS (240603).pdf | ||
| Att 07_Design Analysis (230602).pdf | ||
| Att 09_Wage Rates (240105).pdf | ||
| Att 02_SOW (240419).docx | DOCX document | |
| Att 04_Plans (240417).pdf |
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Text version
BRIDGE RATING SUMMARY
USFS REGION 9 LOAD RATING REPORT
Forest: WHITE MOUNTAIN Ranger District: ANDROSCOGGIN
Rated By: DARYN CARTER Bridge Name: BOG DAM
Reviewed By: GUST JUNTTILA, P.E. Bridge Number: FR 15-7.9
Firm: UPEA Bridge SN: 092202000001024
Rating Date: 6/2/2023
SUMMARY OF CONTROLLING RATING
(Rating Factors)
RF
Safe Load Capacity
(tons)
Posting Load (tons)
Controlling
Member
Location
(span ratio)
Controlling Effect*
(M, V, or B)
HL-93 Inventory 1.05
--- --- Int. Girder 0.5 STR I, M
HL-93 Operating 1.36
--- --- Int. Girder 0.5 STR I, M
NRL 1.37
54 --- Int. Girder 0.5 SERV II, M
SU4 1.81
48 --- Int. Girder 0.5 SERV II, M
SU5 1.71
53 --- Int. Girder 0.5 SERV II, M
SU6 1.54
SU7 1.45
56 --- Int. Girder 0.5 SERV II, M
Type 3 2.13
Type 3S2 2.27
81 --- Int. Girder 0.5 SERV II, M
Type 3-3 2.59
103 --- Int. Girder 0.4 SERV II, M
* M = Moment, V = Shear, B = Bearing
NOTES or COMMENTS:
New Bridge, Initial Load Rating
Load Rating Engineer: Daryn Carter
Checked By Engineer: Gust Junttila, P.E.
Regional Bridge Program Manager:
gjunttila Text Box Daryn Carter
BRASS-GIRDER™ Input Parameters
Version Information Girder GUI: 8.8.0.3001 Girder XML: 8.8.0.3001
BRASS™ XML: 2.9.0.3001
Administration
Project ID: U28-02592 Task 101 Project Title: Replacement - Bog Dam 4_15-7.9_0922 Bridge ID: 092202000001024 Bridge Name: Bog Dam Bridge Route Name: FR 15 Reference Marker: 7.9 Title 1:
Title 2:
Date: 4/28/2023 Agency: U.P. Engineers & Architects Designer/Rater: DCarter Reviewer: GJunttila Comments:
Bridge Notes
New Superstructure.
Control
Structure Structure Type: GirderLine Define Deck Cross Section: Yes Number of Members: 4
Skew Angle: -
Analysis Model Type: Beam
Number of Top Spans: 1
Spans
Span Length
1 39.17 ft
Structure Material: Steel Beam Type: Rolled Composite Structure: No Number of Stages: 1 Deck Material: Timber
Analysis
Unit System: US Analysis Method: LRFD Analysis Type: Rating Member of Interest: 3 Model Element Type: Stepped Point of Interest Generation Control: Tenth Live-load Distribution Factor Application: AnalysisPoint Interpolate Reinforcement: No Calculate Effective Width: No Perform Constructibility Checks: No
Input
Symmetry
Component Symmetric
Beam Profile No
Deck Profile No
Shear Connectors No
Transverse Stiffeners No
Bearing Stiffeners No
Longitudinal Stiffeners No
Bracing (Member) No
Lateral Support No
Cb Factors (LRFD) No
Beam Distribution Factors (LRFD) No
Reaction Distribution Factors (LRFD) No
Merge Beam/Deck Profile Schedules: Yes
Distribution Perform Dead Load Distribution: Yes Calculate LRFD Live Load Distribution Factors: Yes Page 3 of 43
Dead Load Distribution Methods
Stage Method 1 Tributary area
Live Load Distribution (LRFD) Distribution Method: AASHTO LRFD Cross Section Code: a3 Max. Number of Lanes Loaded: Computed
Slab Thickness Type: Structural Set eg = 0 for Non-composite: No Apply Skew to Lever Rule Override: Yes Apply Skew to Ridgid Rule Override: Yes Use Constants from Table 4.6.2.2.1-2: No Timber Deck Type: Spike Laminated
Libraries Section Library:
Vehicle Library:
Output
Primary Output Action Output Level: DL+LL Action Locations: 10thPoints
General Member Properties: Yes Load Combinations: Yes Load and Resistance Factors: Yes Warnings: No Camber: Yes Critical Design Ratios / Rating Factors: Expanded Critical Failure Mode Ratios: No
Live Load Truck Positions: No Variable Axle Spacing: No Live Load Settings: No Live Load Combinations: No Live Load Details: No
Stage
Stage Output
1 No
Dead Load Member Self Load: Yes Distributed Dead Loads: Yes Concentrated Dead Loads: No
Temperature Change: No Settlements: No
Load Distribution Dead Load Distribution: No Live Load Distribution: Yes
Intermediate Output Intermediate Output Level: Minimum Effective Width: No Floorbeam Lane Position: No
Points of Interest Specification Checks: No Load Factoring/Combinations: No
Load Distribution Dead Load: No Live Load: No
Limit State Output (LRFD)
Limit State Specification Check Load Combination
Strength I Yes Yes
Strength II Yes Yes
Strength IV No No
Service I Yes Yes
Service II Yes Yes
Fatigue I Yes Yes
Fatigue II Yes Yes
Intermediate Output (cont.)
Steel Transverse Stiffeners: No Bearing Stiffeners: No Longitudinal Stiffeners: No
Results Tables X-Y Plot Action Tables: No Specification Check Results Tables: No Mesh Plot Files: No
BRASS-PAD™ Data Transfer File: No
Influence
Output influence lines for: None Ordinate Divisor: 1
Factors
Load Factors (LRFD)
Limit State
DC DW DU TU
max min max min max min max min
Strength I 1.25 0.9 1.5 0.65 1.5 0.65 1.2 0.5
Strength II 1.25 0.9 1.5 0.65 1.5 0.65 1.2 0.5
Strength IV 1.5 0.9 1.5 0.65 1.5 0.65 1.2 0.5
Service I 1 1 1 1 1 1 1.2 1
Service II 1 1 1 1 1 1 1.2 1
Fatigue I 0 0 0 0 0 0 0 0
Fatigue II 0 0 0 0 0 0 0 0
Load Factors (LRFD) (continued)
Limit State
LL
SE PS DS
Design Legal Permit
Inventory Operating max min max min max min
Strength I 1.75 1.35 1.3 0 1 1 1 1 1.25 0.9
Strength II 1.35 0 1.1 1 1 1 1 1.25 0.9
Strength IV 0 0 0 0 0 1 1 1.5 0.9
Service I 1 0 1 1 1 1 1 1 1
Service II 1.3 1 1.3 1 0 0 1 1 1 1
Fatigue I 1.75 0 0 0 0 1 1 0 0
Fatigue II 0.8 0 0 0 0 1 1 0 0
Load Modifiers (LRFD)
Limit State Ductility Redundancy Importance Combined Product max min
Strength I 1 1 1 - -
Strength II 1 1 1 - -
Strength IV 1 1 1 - -
Service I 1 1 1 - -
Service II 1 1 1 - -
Fatigue I 1 1 1 - -
Fatigue II 1 1 1 - -
Resistance Factors (LRFD)
Resistance Factors
Type Value φ Flexure 1 φ Shear 1 φ Bearing 1 φ Compression 0.95 φ Shear Connectors 0.85 φ Fatigue 1
System/Total Modifiers
Limit State Resistance Type System Total
Strength Flexure 0.95 -
Strength Shear 1 -
Strength Bearing 1 -
Strength Compression 0.95 -
Strength Shear Connectors 1 -
Strength Longitudinal Reinforcement 1 -
Service Flexure 1 -
Fatigue Fatigue 1 -
Condition Modifiers
Limit State Condition
Strength 1
Service 1
Fatigue 1
Materials
Steel
ID Name Yield Stress
Tensile Strength
Modulus of Elasticity
Density Thermal Expansion Coefficient
2 Grade 50W 50 ksi 70 ksi 29000 ksi 0.49 kcf 6.5E-06 °F-1
Timber
ID Name Density Thermal Expansion Coefficient
1 Douglas Fir-Larch Select Structural 0.05 kcf 2E-06 °F-1
Dead Load Groups
Groups
ID Name Stage Type Description
1 DC1 1 DC Non-composite component dead load
2 DW1 1 DW Wearing surface dead load
Deck Geometry
Deck
Deck Thickness: 5.5 in.
Left Cantilever Length: 1.5 ft Right Cantilever Length: 1.5 ft Equal Member Spacing: Yes
Travelway Locations
Distance to Left Edge: 1.075 ft Distance to Right Edge: 13.925 ft
Sacrificial Topping Thickness: - Dead Load Type: DW
Member Spacing
Bay # Spacing
All 4 ft
Soffits No soffits have been defined.
Appurtenances No appurtenances have been defined.
Deck Loads
Materials/Stages Deck Material: Douglas Fir-Larch Select Structural Curb & Median Material: Douglas Fir-Larch Select Structural Wearing Surface Weight: 0.0125 ksf
Stages Apply to entire structure: Yes Deck Stage: 1 Curbs Stage: 1 Median Stage: Not Assigned Wearing Surface Stage: 1
Line Loads
Dead Load Group Line Load Load Location
DC1 0.047 kip / ft 0 ft
DC1 0.047 kip / ft 15 ft
Uniform Loads No uniform loads have been defined.
Live Loads
Live Load Control Direction Control: Up+Down Standard Live Loads: Design+Legal Wheel Advancement Denominator: 100
ADTT: 99
ADTT for Single Lane: 45 Multiple Presence Adjustment Method: AASHTO LRFD C3.6.1.1.2 % of Dynamic Load Allowance (Impact): 100 %
Dynamic Load Allowance (LRFD)
Design/Rating Procedure Truck Lane Fatigue
Design 33 % 0 % 15 %
Legal 33 % 0 % 0 %
Permit 33 % 0 % 0 %
Special Vehicles
Axle Vehicles No axle vehicles have been defined.
Lane Vehicles
No lane vehicles have been defined.
Definitions (LRFD)
Definition 1
Code: HL-93-TRUCK Type: DesignTruck Design Rating: Design % of Dynamic Load Allowance: - Scale Factor: - Lanes Loaded: Critical Notional Load: Yes Fixed DLA: -
Live Load Factor Overrides
Limit State gamma LL gamma LL Operating
Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - - Fatigue II - -
Definition 2
Code: HL-93-TANDEM Type: DesignTandem Design Rating: Design % of Dynamic Load Allowance: - Scale Factor: - Lanes Loaded: Critical Notional Load: Yes Fixed DLA: -
Live Load Factor Overrides
Limit State gamma LL gamma LL Operating
Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - - Fatigue II - -
Definition 3
Code: HL-93-TRKTRA Type: DesignTruckTrain Design Rating: Design % of Dynamic Load Allowance: - Scale Factor: - Lanes Loaded: Critical Notional Load: Yes Fixed DLA: -
Live Load Factor Overrides
Limit State gamma LL gamma LL Operating
Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - - Fatigue II - -
Definition 4
Code: HL-93-LANE Type: DesignLane Live Load Factor Overrides
Design Rating: Design % of Dynamic Load Allowance: - Scale Factor: - Lanes Loaded: Critical Notional Load: No Fixed DLA: -
Limit State gamma LL gamma LL Operating
Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - - Fatigue II - -
Definition 5
Code: HL-93-FAT Type: FatigueTruck Design Rating: Design % of Dynamic Load Allowance: - Scale Factor: - Lanes Loaded: Single Notional Load: No Fixed DLA: -
Live Load Factor Overrides
Limit State gamma LL gamma LL Operating
Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - - Fatigue II - -
Definition 6
Code: TYPE3 Type: GeneralTruck Design Rating: Legal % of Dynamic Load Allowance: - Scale Factor: - Lanes Loaded: Critical Notional Load: No Fixed DLA: -
Live Load Factor Overrides
Limit State gamma LL gamma LL Operating
Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - - Fatigue II - -
Definition 7
Code: TYPE3S2 Type: GeneralTruck Design Rating: Legal % of Dynamic Load Allowance: - Scale Factor: - Lanes Loaded: Critical Notional Load: No Fixed DLA: -
Live Load Factor Overrides
Limit State gamma LL gamma LL Operating
Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - -
Fatigue II - -
Definition 8
Code: TYPE3-3 Type: GeneralTruck Design Rating: Legal % of Dynamic Load Allowance: - Scale Factor: - Lanes Loaded: Critical Notional Load: No Fixed DLA: -
Live Load Factor Overrides
Limit State gamma LL gamma LL Operating
Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - - Fatigue II - -
Definition 9
Code: TYPE3-3 Type: LegalTruck Design Rating: Legal % of Dynamic Load Allowance: - Scale Factor: - Lanes Loaded: Critical Notional Load: No Fixed DLA: -
Live Load Factor Overrides
Limit State gamma LL gamma LL Operating
Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - - Fatigue II - -
Definition 10
Code: TYPE3-3 Type: LegalTruckTrain Design Rating: Legal % of Dynamic Load Allowance: - Scale Factor: - Lanes Loaded: Critical Notional Load: No Fixed DLA: -
Live Load Factor Overrides
Limit State gamma LL gamma LL Operating
Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - - Fatigue II - -
Definition 11
Code: LEGAL-LANE Type: LegalLane Design Rating: Legal % of Dynamic Load Allowance: -
Live Load Factor Overrides
Limit State gamma LL gamma LL
Scale Factor: - Lanes Loaded: Critical Notional Load: No Fixed DLA: -
Operating Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - - Fatigue II - -
Definition 12
Code: SU4 Type: GeneralTruck Design Rating: Legal % of Dynamic Load Allowance: - Scale Factor: - Lanes Loaded: Critical Notional Load: No Fixed DLA: -
Live Load Factor Overrides
Limit State gamma LL gamma LL Operating
Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - - Fatigue II - -
Definition 13
Code: SU5 Type: GeneralTruck Design Rating: Legal % of Dynamic Load Allowance: - Scale Factor: - Lanes Loaded: Critical Notional Load: No Fixed DLA: -
Live Load Factor Overrides
Limit State gamma LL gamma LL Operating
Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - - Fatigue II - -
Definition 14
Code: SU6 Type: GeneralTruck Design Rating: Legal % of Dynamic Load Allowance: - Scale Factor: - Lanes Loaded: Critical Notional Load: No Fixed DLA: -
Live Load Factor Overrides
Limit State gamma LL gamma LL Operating
Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - - Fatigue II - -
Definition 15
Code: SU7 Type: GeneralTruck Design Rating: Legal % of Dynamic Load Allowance: - Scale Factor: - Lanes Loaded: Critical Notional Load: No Fixed DLA: -
Live Load Factor Overrides
Limit State gamma LL gamma LL Operating
Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - - Fatigue II - -
Definition 16
Code: NRL Type: GeneralTruck Design Rating: Legal % of Dynamic Load Allowance: - Scale Factor: - Lanes Loaded: Critical Notional Load: Yes Fixed DLA: -
Live Load Factor Overrides
Limit State gamma LL gamma LL Operating
Strength I - - Strength II - - Strength IV - - Service I - - Service II - - Service III - - Fatigue I - - Fatigue II - -
General Combinations (LRFD)
Standard Combo Truck Lane
Combination Factors
Truck Lane
Yes HL-93-TRUCK HL-93-LANE 1 1
Yes HL-93-TANDEM HL-93-LANE 1 1
Yes HL-93-TRKTRA HL-93-LANE 0.9 0.9
Yes HL-93-FAT Not Assigned 1 -
Yes TYPE3 Not Assigned 1 -
Yes TYPE3S2 Not Assigned 1 -
Yes TYPE3-3 Not Assigned 1 -
Yes TYPE3-3 LEGAL-LANE 0.75 1
Yes TYPE3-3 LEGAL-LANE 0.75 1
No SU4 Not Assigned 1 -
No SU5 Not Assigned 1 -
No SU6 Not Assigned 1 -
No SU7 Not Assigned 1 -
No NRL Not Assigned 1 -
Deflection Combinations (LRFD)
Standard Combo Truck Lane
Combination Factors Allowable Deflection
Truck Lane Denominator Absolute
Yes HL-93-TRUCK Not Assigned 1 - 500 -
Yes HL-93-TRUCK HL-93-LANE 0.25 1 500 -
Component Groups
Transverse Stiffeners No transverse stiffener groups have been defined.
Bearing Stiffeners No bearing stiffener groups have been defined.
Longitudinal Stiffeners No longitudinal stiffener groups have been defined.
Library Sections
W24X76 Name: W24X76 Description: WIDE FLANGE 24X76 7th Edition
Nominal Depth: 24 in.
Weight/Length: 76 lb / ft Section Depth: 23.91 in.
Neutral Axis Depth: 11.955 in.
Area: 22.4 in.2
Moment of Inertia (X | Y): 2100 in.4 | 82.6 in.4
Plastic Modulus (X | Y): 201 in.3 | 28.7 in.3
Top Flange Width: 8.985 in. Web Thickness (Top | Bottom):
0.44 in. |
0.44 in. Bottom Flange Width: 8.985 in.
Top Flange Thickness: 0.682 in. Web Depth: 22.546 in. Bottom Flange
Thickness: 0.682 in.
Top Cover Plate Width: 0 in. Bottom Cover Plate Width: 0 in.
Top Cover Plate Thickness: 0 in. Bottom Cover Plate Thickness: 0 in.
Top Cover Plate Clearance: 0 in. Bottom Cover Plate Clearance: 0 in.
Top Taper Height: 0 in. Top Fillet Height: 0 in. Bottom Taper Height: 0 in. Bottom Fillet Height: 0 in.
Top Taper Distance: 0 in. Top Fillet Width: 0 in. Bottom Taper Distance: 0 in. Bottom Fillet Width: 0 in.
Specification Control
General
Lane Geometry
Design Vehicle Lane Width: 12 ft Vehicle Width: 10 ft Wheel Spacing: 6 ft Encroachment Distance: -
Load Factors Control (LRFD): Use load factors per analysis type (Review = max/min; Rating = max only)
Skew Factors
Span # % of Span % of Skew
1 - -
Steel Use Appendix A6 (LRFD): No Allow Plastic Analysis: No Override Longitudinal Stiffeners: No
Fatigue
AASHTO LRFD Table 6.6.1.2.5-2 % of Span: 10 Span Length: 40 ft
Stress Range in Longitudinal Reinforcement Over the Piers: 10 ksi
Detail Categories (LRFD)
Detail Category
Constant, A x 10^8
Constant Amplitude Fatigue Threshold
A 250 kip3 24 ksi
B 120 kip3 16 ksi
B' 61 kip3 12 ksi
C 44 kip3 10 ksi
C' 44 kip3 12 ksi
D 22 kip3 7 ksi
E 11 kip3 4.5 ksi
E' 3.9 kip3 2.6 ksi
Limit State Map
Limit State Maps (LRFD)
Limit State Design Review Rating
Design Load Legal Load Permit Load Design Load Legal Load Permit Load
Strength I Yes Yes No Inventory/Operating Yes No
Strength II Yes Yes Yes Exclude No Yes
Strength IV No No No Exclude No No
Service I No No No Exclude No No
Service II Yes Yes No Inventory/Operating Yes Yes
Fatigue I Yes Yes No Inventory No No
Fatigue II Yes Yes No Inventory No No
Spec. Check Map (Strength)
LRFD Specification Check Maps
Design Load Review
Spec Check Strength I Strength II Strength IV
Flexure Yes Yes No
Shear Yes Yes No
Bearing Yes Yes No
Flexural Stress In Longitudinal Stiffener Yes Yes No
Legal Load Review
Spec Check Strength I Strength II Strength IV
Flexure Yes Yes No
Shear Yes Yes No
Bearing Yes Yes No
Flexural Stress In Longitudinal Stiffener Yes Yes No
Permit Load Review
Spec Check Strength I Strength II Strength IV
Flexure Yes Yes No
Shear Yes Yes No
Bearing Yes Yes No
Flexural Stress In Longitudinal Stiffener Yes Yes No
Design Load Rating
Spec Check Strength I Strength II Strength IV
Flexure Yes Yes No
Shear Yes No No
Bearing Yes Yes No
Flexural Stress In Longitudinal Stiffener No No No
Legal Load Rating
Spec Check Strength I Strength II Strength IV
Flexure Yes Yes No
Shear Yes No No
Bearing Yes Yes No
Flexural Stress In Longitudinal Stiffener No No No
Permit Load Rating
Spec Check Strength I Strength II Strength IV
Flexure Yes Yes No
Shear Yes No No
Bearing Yes Yes No
Flexural Stress In Longitudinal Stiffener No No No
Spec. Check Map (Service)
LRFD Specification Check Maps
Design Load Review
Spec Check Service I Service II
Crack Control Yes No
Flexural Stress In Flanges No Yes
Live Load Deflection Yes Yes
Legal Load Review
Spec Check Service I Service II
Crack Control Yes No
Flexural Stress In Flanges No Yes
Live Load Deflection Yes Yes
Permit Load Review
Spec Check Service I Service II
Crack Control Yes No
Flexural Stress In Flanges No Yes
Live Load Deflection Yes Yes
Design Load Rating
Spec Check Service I Service II
Crack Control No No Page 18 of 43
Flexural Stress In Flanges No Yes
Live Load Deflection Yes Yes
Legal Load Rating
Spec Check Service I Service II
Crack Control No No
Flexural Stress In Flanges No Yes
Live Load Deflection Yes Yes
Permit Load Rating
Spec Check Service I Service II
Crack Control No No
Flexural Stress In Flanges No Yes
Live Load Deflection Yes Yes
Spec. Check Map (Fatigue)
LRFD Specification Check Maps
Design Load Review
Spec Check Fatigue I Fatigue II
Fatigue of Reinforcement Yes No
Fatigue of Shear Connectors Yes Yes
Fatigue Shear Range of Shear Connectors Yes Yes
Fatigue of Special Points Yes Yes
Fatigue Shear Yes No
Legal Load Review
Spec Check Fatigue I Fatigue II
Fatigue of Reinforcement Yes No
Fatigue of Shear Connectors Yes Yes
Fatigue Shear Range of Shear Connectors Yes Yes
Fatigue of Special Points Yes Yes
Fatigue Shear Yes No
Permit Load Review
Spec Check Fatigue I Fatigue II
Fatigue of Reinforcement Yes No
Fatigue of Shear Connectors Yes Yes
Fatigue Shear Range of Shear Connectors Yes Yes
Fatigue of Special Points Yes Yes
Fatigue Shear Yes No
Design Load Rating
Spec Check Fatigue I Fatigue II
Fatigue of Reinforcement Yes No
Fatigue of Shear Connectors No No
Fatigue Shear Range of Shear Connectors No No
Fatigue of Special Points Yes Yes
Fatigue Shear Yes No
Legal Load Rating
Spec Check Fatigue I Fatigue II
Fatigue of Reinforcement Yes No
Fatigue of Shear Connectors No No
Fatigue Shear Range of Shear Connectors No No
Fatigue of Special Points Yes Yes
Fatigue Shear Yes No
Permit Load Rating
Spec Check Fatigue I Fatigue II
Fatigue of Reinforcement Yes No
Fatigue of Shear Connectors No No
Fatigue Shear Range of Shear Connectors No No
Fatigue of Special Points Yes Yes
Fatigue Shear Yes No
Member
Member Notes
No member notes have been defined.
Member Materials
Beam
Beam Material: Grade 50W
Beam Profile
Library Section Apply to entire member: No
Section Name
Material
ID
Support Number
Start Distance Length
W24X76 2 1 0 ft 39.17 ft
Top Cover Plate No top cover plate schedules have been defined.
Bottom Cover Plate No bottom cover plate schedules have been defined.
Hinges
No hinges have been defined.
Special Locations
No special locations have been defined.
Splice Locations
No splice locations have been defined.
Supports
Support Conditions
Support Support Restraint
Horizontal Vertical Rotational
1 Restrained Restrained Free
2 Free Restrained Free
Spring Constants No spring constants have been defined.
Schedules
Bracing Apply to entire member: No
Spacing Support Start Distance Length
9.7925 ft 1 0 ft 39.17 ft
Transverse Stiffeners No transverse stiffener schedules have been defined.
Bearing Stiffeners No bearing stiffener schedules have been defined.
Longitudinal Stiffeners No longitudinal stiffener schedules have been defined.
Lateral Support No lateral support schedules have been defined.
Cb Factors (Standard) Apply to entire member: No
Cb Method Cb Factor
Support Start Distance Length
Top Flange Bottom Flange
Standard 1 0 ft 39.17 ft
Cb Factors (LRFD) Apply to entire member: No
Cb Method Cb Factor
Support Start Distance Length
Top Flange Bottom Flange
Standard 1 0 ft 39.17 ft
Fatigue Stress (Standard) No fatigue stress (standard) schedules have been defined.
Member Control
Steel: Flexure
Flexural Resistance Control
Span Ignore Eq. 6.10.7.1.2-3
(LRFD)
1 No
Flange Local Buckling Resistance Adjustment
Standard Specifications: - LRFD Specifications: -
Steel: Shear
End Panels: Top Span(s)
Span Overhang Distances End Panel Distances
Left Right Left Right
1 8.5 in. 8.5 in. - -
Points of Interest
No points of interest have been defined.
Dead Loads
Uniform No uniform dead loads have been defined.
Additional Self-weight No additional self-weight dead loads have been defined.
Distributed No distributed dead loads have been defined.
Concentrated
Dead Load Group Support Concentrated Load
Distance Horizontal Force
Vertical Force
DC1 1 9.7925 ft - 0.1356 kip
DC1 1 19.585 ft - 0.1356 kip
DC1 1 29.3775 ft - 0.1356 kip
Temperature No temperature dead loads have been defined.
Settlement No settlement loads have been defined.
Pedestrian Load
Pedestrian Load: -
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** Copyright © 1987-2021 WYDOT ** ** Version 8 Release 8 Service Pack 0 ** ** ** Release Version ** ** ** (64-bit) ** ** Release Date: November 2021 ** ** For user assistance and system information contact: ** ** Phone: (307) 777-4489 ** ** E-mail: BRASSTechSupport@wyo.gov ** ** The source version is maintained by BridgeTech, Inc. ** ** Disclaimer: ** ** The Wyoming Department of Transportation assumes no liability or responsibility ** ** for and make no representations or warranties as to applicability or suitability ** ** of this computer program. Anyone making use thereof or relying thereon assumes ** ** all responsibility and liability arising from such use or reliance. ** ** AASHTO LRFD Specifications: ** ** BRASS-GIRDER™ is current with the AASHTO LRFD Bridge Design Specifications, 9th ** ** Edition, 2020. Load and Resistance Factor Ratings are current with the AASHTO Manual ** ** for Bridge Evaluation, 3rd Edition, 2018, with 2019 and 2020 Interim Revisions. ** ** AASHTO Standard Specifications (LFD): ** ** BRASS-GIRDER™ is current with the AASHTO Standard Specifications for Highway ** ** Bridges, 17th Edition, 2002. Load Factor Ratings are current with the AASHTO Manual ** ** for Bridge Evaluation, 3rd Edition, 2018, with 2019 and 2020 Interim Revisions. **
BRASS-GIRDER Version 8.8.0 Agency : U.P. Engineers & Architects Page: 1 Engineer : DCarter Date: 05/23/2023 Bridge Name: 092202000001024 Bog Dam Bridge Time: 8:55 AM Input File : ..TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.girder Output File: ..R9 TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.out
** STRUCTURE/ANALYSIS SUMMARY **
Structure Type : Beam Material Type : Steel Number of Stages : 1 Element Type : Stepped Analysis Type : Rating Wheel Adv. Denom.: 100 (initial value)
Span No. Length (ft) Angle (deg) 1 39.1700 N/A
Supports:
-------------- Fixity -------------- --------- Spring Constants --------- Support Horizontal Vertical Rotational Horizontal Vertical Rotational No. (k/ft) (k/ft) (ft-k/rad) 1 Restrained Restrained Free Infinity Infinity N/A 2 Free Restrained Free N/A Infinity N/A
Beam Material Properties:
Unit Weight : 0.490 k/ft^3 Modulus of Elasticity (E) : 29000.000 ksi Thermal Expansion Coefficient : 0.0000065 / deg. F
Agency : U.P. Engineers & Architects Page: 2 Engineer : DCarter Date: 05/23/2023 Bridge Name: 092202000001024 Bog Dam Bridge Time: 8:55 AM Input File : ..TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.girder Output File: ..R9 TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.out
** OUTPUT CONTROL SUMMARY **
Action Output Locations Actions at tenth points Dead Load Actions YES Live Load Actions YES Concurrent Actions NO Girder Properties YES Truck Position NO Variable Axle Spacing NO Live Load Settings NO Live Load Combinations NO Live Load Details NO Load Combinations YES Load and Resistance Factors YES Warnings NO Member Self-Load YES Distributed Dead Loads YES Concentrated Dead Loads NO Temperature Change NO Settlements NO Camber Summary YES Influence Summary NO Critical Design Ratios or Rating Factors YES (Expanded) Critical Failure Mode Ratios NO Dyn. Load Allowance Summary NO Intermediate Output Level Condensed Stage 1 NO
Limit State Intermediate Output Load Combinations
STRENGTH I YES YES
STRENGTH I-O YES YES
STRENGTH II YES YES
STRENGTH IV NO NO
SERVICE I YES YES
SERVICE II YES YES
SERVICE II-O YES YES
SERVICE III NO NO
FATIGUE I YES YES
FATIGUE II YES YES
Dead Load Distribution (Intermediate) NO Dead Load Distribution (Standard) NO Live Load Distribution (Intermediate) NO Live Load Distribution (Standard) YES Transverse Stiffeners (Intermediate) NO Bearing Stiffeners (Intermediate) NO Longitudinal Stiffeners (Intermediate) NO Shear Connectors (Intermediate) NO Shear Connectors (Standard) NO Floorbeam (Intermediate) NO Effective Width (Intermediate) NO Action X-Y Plot Tables NO Specification Check Results Tables NO Mesh Plot Files NO
Agency : U.P. Engineers & Architects Page: 3 Engineer : DCarter Date: 05/23/2023 Bridge Name: 092202000001024 Bog Dam Bridge Time: 8:55 AM Input File : ..TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.girder Output File: ..R9 TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.out
Self-Load Summary:
Span Beginning of Load End of Load No. Distance, ft Magnitude, k/ft Distance, ft Magnitude, k/ft 1 0.000 0.0755 39.170 0.0755
Load Groups:
1. Non-composite component dead load
2. Wearing surface dead load
Distributed Dead Load Summary:
No loads are present.
Deck Loads and Schedules Summary:
Element Stage Load, k/ft Deck 1 0.0917 Wearing Surface 1 0.0500
Span Start Element Stage No. Distance, ft Length, ft Deck 1 * 0.000 39.170 Wearing Surface 1 * 0.000 39.170
Note: A span number denoted as "*" indicates the distances reference the left end of the bridge and the load may extend over one or more spans.
Agency : U.P. Engineers & Architects Page: 4 Engineer : DCarter Date: 05/23/2023 Bridge Name: 092202000001024 Bog Dam Bridge Time: 8:55 AM Input File : ..TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.girder Output File: ..R9 TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.out
** LIVE LOAD DISTRIBUTION FACTORS SUMMARY **
Beam Distribution Factor Schedule: Shear
Distances, ft Span No. Start End mg(1-lane) mg(M-lanes)
1 0.000 19.585 0.434 (LRFD) 0.424 ( M,LRFD)
1 19.585 39.170 0.434 (LRFD) 0.424 ( M,LRFD)
Beam Distribution Factor Schedule: Moment
Distances, ft Span No. Start End mg(1-lane) mg(M-lanes)
1 0.000 39.170 0.434 (LRFD) 0.424 ( M,LRFD)
Beam Distribution Factor Schedule: Deflection
Distances, ft Span No. Start End mg(1-lane) mg(M-lanes)
1 0.000 39.170 0.270 (LRFD) 0.270 ( 1,LRFD)
Reaction Distribution Factors: Shear
Support No. mg(1-lane) mg(M-lanes)
1 0.434 (LRFD) 0.424 ( M,LRFD)
2 0.434 (LRFD) 0.424 ( M,LRFD)
Reaction Distribution Factors: Moment
Support No. mg(1-lane) mg(M-lanes)
1 0.434 (LRFD) 0.424 ( M,LRFD)
2 0.434 (LRFD) 0.424 ( M,LRFD)
Reaction Distribution Factors: Deflection
Support No. mg(1-lane) mg(M-lanes)
1 0.270 (LRFD) 0.270 ( 1,LRFD)
2 0.270 (LRFD) 0.270 ( 1,LRFD)
Notes:
=> The controlling method is included in parenthesis next to each distribution factor.
USER = User Input LR-T = Lever Rule Specified in AASHTO LRFD Table LRFD = AASHTO LRFD Formulas LR-O = Lever Rule Override LR = Lever Rule Method RG-O = Rigid Method Override => Additionally, for multiple-lanes loaded, the number of lanes loaded is shown. An 'M' is used with the USER and LRFD methods because the number of multiple lanes is unknown.
=> The Lever Rule Override is invoked when the ranges of applicability are not satisfied for the AASHTO LRFD distribution factor formulas.
Agency : U.P. Engineers & Architects Page: 5 Engineer : DCarter Date: 05/23/2023 Bridge Name: 092202000001024 Bog Dam Bridge Time: 8:55 AM Input File : ..TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.girder Output File: ..R9 TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.out
LOAD FACTORS SUMMARY:
Limit State eta D eta R eta I eta T eta T
MAX MIN
STRENGTH I 1.00 1.00 1.00 1.00 1.00
STRENGTH II 1.00 1.00 1.00 1.00 1.00
STRENGTH IV 1.00 1.00 1.00 1.00 1.00
SERVICE I 1.00 1.00 1.00 1.00 1.00
SERVICE II 1.00 1.00 1.00 1.00 1.00
SERVICE III 1.00 1.00 1.00 1.00 1.00
FATIGUE I 1.00 1.00 1.00 1.00 1.00
FATIGUE II 1.00 1.00 1.00 1.00 1.00
Limit State DC DW DU LL (Design) LL LL MAX MIN MAX MIN MAX MIN Inventory Operating Legal Permit
STRENGTH I 1.25 1.25 1.50 1.50 1.50 1.50 1.75 1.35 1.30 0.00
STRENGTH II 1.25 1.25 1.50 1.50 1.50 1.50 1.35 0.00 0.00 1.10
STRENGTH IV 1.50 1.50 1.50 1.50 1.50 1.50 0.00 0.00 0.00 0.00
SERVICE I 1.00 1.00 1.00 1.00 1.00 1.00 1.00 0.00 0.00 1.00
SERVICE II 1.00 1.00 1.00 1.00 1.00 1.00 1.30 1.00 1.30 1.00
SERVICE III 1.00 1.00 1.00 1.00 1.00 1.00 0.80 0.00 1.00 0.00
FATIGUE I 0.00 0.00 0.00 0.00 0.00 0.00 1.75 0.00 0.00 0.00
FATIGUE II 0.00 0.00 0.00 0.00 0.00 0.00 0.80 0.00 0.00 0.00
Limit State TU SE PS DS
MAX MIN MAX MIN MAX MIN MAX MIN
STRENGTH I 1.20 1.20 1.00 1.00 1.00 1.00 1.25 1.25
STRENGTH II 1.20 1.20 1.00 1.00 1.00 1.00 1.25 1.25
STRENGTH IV 1.20 1.20 0.00 0.00 1.00 1.00 1.50 1.50
SERVICE I 1.20 1.20 1.00 1.00 1.00 1.00 1.00 1.00
SERVICE II 1.20 1.20 0.00 0.00 1.00 1.00 1.00 1.00
SERVICE III 1.20 1.20 1.00 1.00 1.00 1.00 1.00 1.00
FATIGUE I 0.00 0.00 0.00 0.00 1.00 1.00 0.00 0.00
FATIGUE II 0.00 0.00 0.00 0.00 1.00 1.00 0.00 0.00
Notes:
=> DU = Utilities => PS = Prestress => DS = Differential Deck Shrinkage
RESISTANCE FACTORS SUMMARY:
Limit State Condition Phi C
STRENGTH 1.000
SERVICE 1.000
FATIGUE 1.000
STRENGTH SERVICE FATIGUE
Resistance Type ----------------------- ----------------------- --------------------- Base System Total Final System Total Final System Total Final phi phi S phi T phi phi S phi T phi phi S phi T phi Flexure 1.000 0.950 0.950 0.950 1.000 1.000 1.000 1.000 1.000 1.000 Shear 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 Bearing 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 Shear Connectors 0.850 1.000 1.000 0.850 1.000 1.000 0.850 1.000 1.000 0.850 Compression 0.950 0.950 0.950 0.902 1.000 1.000 0.950 1.000 1.000 0.950 Fatigue 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000
Notes:
=> Base phi factors are not adjusted by phi C * phi S.
=> phi T = phi C * phi S >= 0.85 => phi (Final) = phi (Base) * phi T => The phi (Final) values are used as the resistance factors in all applicable analysis/rating calculations.
Agency : U.P. Engineers & Architects Page: 6 Engineer : DCarter Date: 05/23/2023 Bridge Name: 092202000001024 Bog Dam Bridge Time: 8:55 AM Input File : ..TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.girder Output File: ..R9 TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.out
** DEAD LOAD CAMBER SUMMARY **
Length of Span No. 1 = 39.170 ft
POINT DISTANCE CAMBER
NO. (ft) (in) 1.000R 0.0000 0.00
1.100 3.9170 0.06
1.200 7.8340 0.12
1.250 9.7925 0.14
1.300 11.7510 0.16
1.400 15.6680 0.19
1.500 19.5850 0.20
1.600 23.5020 0.19
1.700 27.4190 0.16
1.750 29.3775 0.14
1.800 31.3360 0.12
1.900 35.2530 0.06 1.100L 39.1700 0.00
Note: Camber includes girder weight, superimposed uniform dead loads, and load groups 1 through 4.
LIMIT STATE LEGEND:
BRASS Specifications STRENGTH I Strength I Inventory STRENGTH I-O Strength I Operating STRENGTH II Strength II STRENGTH IV Strength IV SERVICE I Service I SERVICE II Service II Inventory SERVICE II-O Service II Operating FATIGUE I Fatigue I FATIGUE II Fatigue II
Agency : U.P. Engineers & Architects Page: 7 Engineer : DCarter Date: 05/23/2023 Bridge Name: 092202000001024 Bog Dam Bridge Time: 8:55 AM Input File : ..TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.girder Output File: ..R9 TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.out
CRITICAL RATING FACTOR SUMMARY: Design Load Inventory
Live Load Combination Total Controlling Limit State Rating Load No. Description Vehicle Wt. Point of Action Factor Rating (tons) Interest Location (tons)
1 HL-93-TRUCK + HL-93-LANE (DTK) 36.00 * 105.0000 STRENGTH I 1.05 37.83 *
Flexure (stress) Maximum Effects
2 HL-93-TANDEM + HL-93-LANE (DTM) 25.00 * 105.0000 STRENGTH I 1.05 26.14 *
3 HL-93-FAT (FAT) 36.00 * * * UNKNOWN N/A N/A
Unknown???
* * * WARNING * * *
=> A controlling point of interest was NOT found.
=> A critical rating factor was NOT found.
=> Use the Specification Control form (Spec. Check Map tabs) to turn on the desired limit state checks.
=> Use the Specification Control form (Limit State Map tab) to turn on the desired limit states.
=> For fatigue, check if shear connectors, special locations, or rebar are missing.
Crit HL-93-TANDEM + HL-93-LANE (DTM) 25.00 * 105.0000 STRENGTH I 1.05 26.14 *
* Note: This live load is a notional load. The Total Vehicle Weight is taken from the Vehicle Library or is the sum of the axle weights for special vehicles.
The Load Rating is calculated as the Total Vehicle Weight times the Rating Factor.
Agency : U.P. Engineers & Architects Page: 8 Engineer : DCarter Date: 05/23/2023 Bridge Name: 092202000001024 Bog Dam Bridge Time: 8:55 AM Input File : ..TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.girder Output File: ..R9 TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.out
CRITICAL RATING FACTOR SUMMARY: Design Load Operating
Live Load Combination Total Controlling Limit State Rating Load No. Description Vehicle Wt. Point of Action Factor Rating (tons) Interest Location (tons)
1 HL-93-TRUCK + HL-93-LANE (DTK) 36.00 * 105.0000 STRENGTH I-O 1.36 49.10 *
2 HL-93-TANDEM + HL-93-LANE (DTM) 25.00 * 105.0000 STRENGTH I-O 1.36 33.89 *
Crit HL-93-TANDEM + HL-93-LANE (DTM) 25.00 * 105.0000 STRENGTH I-O 1.36 33.89 *
* Note: This live load is a notional load. The Total Vehicle Weight is taken from the Vehicle Library or is the sum of the axle weights for special vehicles.
The Load Rating is calculated as the Total Vehicle Weight times the Rating Factor.
Agency : U.P. Engineers & Architects Page: 9 Engineer : DCarter Date: 05/23/2023 Bridge Name: 092202000001024 Bog Dam Bridge Time: 8:55 AM Input File : ..TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.girder Output File: ..R9 TST-USFS Bridge IDIQ - 21 Bridges\Calcs\Task 101 - WMNF Bog Dam 4\BRASS\Bog Dam 4 - W 24x76.out
CRITICAL RATING FACTOR SUMMARY: Legal Load
Live Load Combination Total Controlling Limit State Rating Load No. Description Vehicle Wt. Point of Action Factor Rating (tons) Interest Location (tons)
4 TYPE3 (TRK) 25.00 105.0000 SERVICE II 2.13 53.31
Flange Stress
Bottom Flange
5 TYPE3S2 (TRK) 36.00 105.0000 SERVICE II 2.27 81.60
Flange Stress
6 TYPE3-3 (TRK) 40.00 104.0000 SERVICE II 2.59 103.42
7 SU4 (TRK) 27.00 105.0000 SERVICE II 1.81 48.91
8 SU5 (TRK) 31.00 105.0000 SERVICE II 1.71 53.06
9 SU6 (TRK) 34.75 105.0000 SERVICE II 1.54 53.62
10 SU7 (TRK) 38.75 105.0000 SERVICE II 1.45 56.10
11 NRL (TRK) 40.00 105.0000 SERVICE II 1.37 54.87
Maximum Effects Bottom Flange
Crit NRL (TRK) 40.00 105.0000 SERVICE II 1.37 54.87
LIMIT STATE LEGEND:
BRASS Specifications STRENGTH I Strength I Inventory STRENGTH I-O Strength I Operating STRENGTH II Strength II STRENGTH IV Strength IV SERVICE I Service I SERVICE II Service II Inventory SERVICE II-O Service II Operating FATIGUE I Fatigue I FATIGUE II Fatigue II
BRIDGE RATING FORMS
USFS REGION 9 LOAD RATING REPORT
STRUCTURE NUMBER: 092202000001024
Forest: WHITE MOUNTAIN Ranger District: ANDROSCOGGIN
Bridge Name: Replacement - Bog Dam 4_15-7.9_0922 No.: 092202000001024
Rated By: Daryn Carter Date: 5/2/23 6:41 PM
SUMMARY OF RATING
RF Tons Controlling
Member Location Limit State
HL-93 LOADING - Inventory 3.07 - Deck Interior Shear
HL-93 LOADING - Operating 3.98 - Deck Interior Shear
TYPE 3 RATING VEHICLE 7.09 177.30 (SLC) Deck Interior Shear
TYPE 3S2 RATING VEHICLE 7.70 277.05 (SLC) Deck Interior Shear
TYPE 3-3 RATING VEHICLE 7.48 299.29 (SLC) Deck Interior Shear
SU4 7.09 191.48 (SLC) Deck Interior Shear
SU5 7.09 219.85 (SLC) Deck Interior Shear
SU6 7.09 246.44 (SLC) Deck Interior Shear
SU7 7.09 274.81 (SLC) Deck Interior Shear
NRL 7.09 283.68 (SLC) Deck Interior Shear
*SLC = Safe Load Capacity **SPL = Safe Posting Load
Notes or Comments:
For timber deck rating only
Load Rating Performed By: Daryn Carter Signature/Date:
Load Rating Checked By: Gust Junttila, P.E.
Signature/Date:
Load Rating Approved By:
Signature/Date:
Statement of Report Basis: For Timber Deck Rating Only
Bridge Name: Replacement - Bog Dam 4_15-7.9_0922
Bridge Number:
092202000001024
Last Save: 5/2/23 6:41 PM
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Bridge Inspector:
Organization: USFS Bridge Name: Replacement - Bog Dam 4_15-7.9_0922
Bridge Number:
092202000001024
Last Save: 5/2/23 6:41 PM
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Inputs
Rating Method:
Load and Resistance Factor Rating U.S. Customary
Deck Type: Nail-Laminated Stringer Type: Steel - W24X76 - Custom Number of Lanes: 1 Number of Stringers: 4 Stringer Span: 39.17 (ft) Steel Yield Stress (Fy): 500.000 (ksi) Unbraced Length: 9.79 (ft) Moment Gradient (Cb): 1.00 (see user manual) Deck Skew: 0.00 (deg) Min. Panel Width: 15.00 (in) Decking Fb: 1.200 (ksi) Decking FV: 0.180 (ksi) Component Dead Loads: 94.00 (plf) Wearing Surface Dead Load: 162.50 (plf) Wheel/Track Gage: 6.00 (ft) Impact Factor: 0.33 Effective Length of Deck Resisting Wheel Load: 62.00 (in) Exterior Stringer Live Load Distribution Factor: 0.36 (wheel loads) Interior Stringer Live Load Distribution Factor: 0.45 (wheel loads) C-C Ext. Stringers: 12.00 (ft) Deck Thickness: 5.50 (in) Deck Travel Clear Width: 12.85 (ft) Total Deck Width: 15.00 (ft) Component Dead Load Factor, γDL: 1.25 Wearing Surface Dead Load Factor, γWS: 1.50 Design Inventory γLL 1.75 (for design loads) Design Operating γLL 1.35 (for design loads) Legal Live Load Factor, γL: 1.30 (for legal loads) Permit Load Factor, γPL: 1.10 (for permit loads) Stringer Moment Resistance Factor, Φ: 1.00 Stringer Shear Resistance Factor, Φ: 1.00 Stringer Condition Factor ΦC Good or Satisfactory (6 or Higher) Timber Deck Moment Resistance Factor, Φ: 0.85 Timber Deck Shear Resistance Factor, Φ: 0.75 Deck Condition Factor ΦC Good or Satisfactory (6 or Higher) System Factor 0.95
Bridge Name: Replacement - Bog Dam 4_15-7.9_0922
Bridge Number:
092202000001024
Last Save: 5/2/23 6:41 PM
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HL-93 LOADING - Live Loading Results Span Length: 39.17 (ft) Maximum Moment: 563.64 (kip-ft) Maximum Moment Location From Left End: 19.09 (ft) Maximum Shear (at support): 67.38 (kip) Max. Bridge Live Load Deflection: 0.00 (in) L / 1,926,507,715,185 Maximum Reaction: 67.38 (kip)
Load Info Controlling Moment Load: Design Tandem and Lane Controlling Shear Load: Design Truck and Lane Controlling Reaction Load: Design Truck and Lane
HL-93 LOADING - Stresses and Ratios
Dead Load Moment and Shear Stringer Deck
Moment (DL + SDL) 35.56 (kip-ft) 0.20 (kip-ft) Moment (WS) 7.79 (kip-ft) 0.07 (kip-ft) Shear (DL + SDL) 3.63 (kip) 0.20 (kip) Shear (WS) 0.80 (kip) 0.08 (kip)
Distributed Live Load Moment and Shear Interior Exterior
Shear Bending Shear Bending Deck 10.30 (kip) 8.93 (kip-ft) Stringer 25.42 (kip) 256.20 (kip-ft) 24.51 (kip) 205.03 (kip-ft)
Inventory Rating Ratio Interior Exterior
Shear Moment Shear Moment Deck 3.07 3.54 Stringer 8.49 44,721,897.42 8.81 55,884,907.74
Operating Rating Ratio Interior Exterior
Shear Moment Shear Moment Deck 3.98 4.59 Stringer 11.01 57,972,829.98 11.42 72,443,398.92
Additional Information Inventory GVW (Safe Load Capacity) N/A See Appendix C Inventory Rating Factor 3.07 Operating GVW (Safe Load Capacity) N/A See Appendix C Operating Rating Factor 3.98 Inventory γLL 1.75 (for design loads) Operating γLL 1.35 (for design loads) Multi-Presence Factor Reduction 0.95 Impact 0.33
Bridge Name: Replacement - Bog Dam 4_15-7.9_0922
Bridge Number:
092202000001024
Last Save: 5/2/23 6:41 PM
Page 4 of 14Replacement - Bog Dam 4_15-7.9_0922 - Results - v2.4.2.0
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TYPE 3 RATING VEHICLE - Live Loading Results
Maximum Moment: 339.40 (kip-ft) Maximum Moment Location From Left End: 21.30 (ft) Maximum Shear (at support): 40.50 (kip) Max. Bridge Live Load Deflection: 0.00 (in) L / 3,199,353,825,728 Maximum Reaction: 40.50 (kip)
Load Info Load Axle No. 1: 16.00 (kip) Load Axle No. 2: 17.00 (kip) Spacing: 15.00 (ft) Load Axle No. 3: 17.00 (kip) Spacing: 4.00 (ft)
TYPE 3 RATING VEHICLE - Stresses and Ratios
Dead Load Moment and Shear Stringer Deck
Moment (DL + SDL) 35.56 (kip-ft) 0.20 (kip-ft) Moment (WS) 7.79 (kip-ft) 0.07 (kip-ft) Shear (DL + SDL) 3.63 (kip) 0.20 (kip) Shear (WS) 0.80 (kip) 0.08 (kip)
Distributed Live Load Moment and Shear Interior Exterior
Shear Bending Shear Bending Deck 6.00 (kip) 5.13 (kip-ft) Stringer 15.28 (kip) 154.27 (kip-ft) 14.73 (kip) 123.46 (kip-ft)
Rating Factor Ratios Interior Exterior
Shear Bending Shear Bending Deck 7.09 8.31 Stringer 19.02 99,978,458.76 19.73 124,934,031.56
Additional Information Rating GVW (Safe Load Capacity) 177.30 (tons) Safe Posting Load N.A.
Rating Factor 7.09 Bridge need not be posted for this load.
γLL 1.30 (for legal loads) Multi-Presence Factor Reduction 0.95 Impact 0.33
Bridge Name: Replacement - Bog Dam 4_15-7.9_0922
Bridge Number:
092202000001024
Last Save: 5/2/23 6:41 PM
Page 5 of 14Replacement - Bog Dam 4_15-7.9_0922 - Results - v2.4.2.0
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TYPE 3S2 RATING VEHICLE - Live Loading Results
Maximum Moment: 315.85 (kip-ft) Maximum Moment Location From Left End: 20.18 (ft) Maximum Shear (at support): 38.26 (kip) Max. Bridge Live Load Deflection: 0.00 (in) L / 3,437,901,490,525 Maximum Reaction: 38.26 (kip)
Load Info Load Axle No. 1: 10.00 (kip) Load Axle No. 2: 15.50 (kip) Spacing: 11.00 (ft) Load Axle No. 3: 15.50 (kip) Spacing: 4.00 (ft) Load Axle No. 4: 15.50 (kip) Spacing: 22.00 (ft) Load Axle No. 5: 15.50 (kip) Spacing: 4.00 (ft)
TYPE 3S2 RATING VEHICLE - Stresses and Ratios
Dead Load Moment and Shear Stringer Deck
Moment (DL + SDL) 35.56 (kip-ft) 0.20 (kip-ft) Moment (WS) 7.79 (kip-ft) 0.07 (kip-ft) Shear (DL + SDL) 3.63 (kip) 0.20 (kip) Shear (WS) 0.80 (kip) 0.08 (kip)
Distributed Live Load Moment and Shear Interior Exterior
Shear Bending Shear Bending Deck 5.53 (kip) 4.72 (kip-ft) Stringer 14.43 (kip) 143.57 (kip-ft) 13.92 (kip) 114.89 (kip-ft)
Rating Factor Ratios Interior Exterior
Shear Bending Shear Bending Deck 7.70 9.03 Stringer 20.14 107,432,972.75 20.88 134,249,263.04
Additional Information Rating GVW (Safe Load Capacity) 277.05 (tons) Safe Posting Load N.A.
Rating Factor 7.70 Bridge need not be posted for this load.
γLL 1.30 (for legal loads) Multi-Presence Factor Reduction 0.95 Impact 0.33
Bridge Name: Replacement - Bog Dam 4_15-7.9_0922
Bridge Number:
092202000001024
Last Save: 5/2/23 6:41 PM
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TYPE 3-3 RATING VEHICLE - Live Loading Results
Maximum Moment: 280.67 (kip-ft) Maximum Moment Location From Left End: 21.85 (ft) Maximum Shear (at support): 35.73 (kip) Max. Bridge Live Load Deflection: 0.00 (in) L / 3,868,801,791,833 Maximum Reaction: 35.73 (kip)
Load Info Load Axle No. 1: 12.00 (kip) Load Axle No. 2: 12.00 (kip) Spacing: 15.00 (ft) Load Axle No. 3: 12.00 (kip) Spacing: 4.00 (ft) Load Axle No. 4: 16.00 (kip) Spacing: 15.00 (ft) Load Axle No. 5: 14.00 (kip) Spacing: 16.00 (ft) Load Axle No. 6: 14.00 (kip) Spacing: 4.00 (ft)
TYPE 3-3 RATING VEHICLE - Stresses and Ratios
Dead Load Moment and Shear Stringer Deck
Moment (DL + SDL) 35.56 (kip-ft) 0.20 (kip-ft) Moment (WS) 7.79 (kip-ft) 0.07 (kip-ft) Shear (DL + SDL) 3.63 (kip) 0.20 (kip) Shear (WS) 0.80 (kip) 0.08 (kip)
Distributed Live Load Moment and Shear Interior Exterior
Shear Bending Shear Bending Deck 5.69 (kip) 4.86 (kip-ft) Stringer 13.48 (kip) 127.58 (kip-ft) 13.00 (kip) 102.09 (kip-ft)
Rating Factor Ratios Interior Exterior
Shear Bending Shear Bending Deck 7.48 8.77 Stringer 21.56 120,898,425.57 22.36 151,075,820.77
Additional Information Rating GVW (Safe Load Capacity) 299.29 (tons) Safe Posting Load N.A.
Rating Factor 7.48 Bridge need not be posted for this load.
γLL 1.30 (for legal loads) Multi-Presence Factor Reduction 0.95 Impact 0.33
Bridge Name: Replacement - Bog Dam 4_15-7.9_0922
Bridge Number:
092202000001024
Last Save: 5/2/23 6:41 PM
Page 7 of 14Replacement - Bog Dam 4_15-7.9_0922 - Results - v2.4.2.0
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SU4 - Live Loading Results
Maximum Moment: 396.85 (kip-ft) Maximum Moment Location From Left End: 20.79 (ft) Maximum Shear (at support): 45.12 (kip) Max. Bridge Live Load Deflection: 0.00 (in) L / 2,736,181,416,578 Maximum Reaction: 45.12 (kip)
Load Info Load Axle No. 1: 12.00 (kip) Load Axle No. 2: 8.00 (kip) Spacing: 10.00 (ft) Load Axle No. 3: 17.00 (kip) Spacing: 4.00 (ft) Load Axle No. 4: 17.00 (kip) Spacing: 4.00 (ft)
SU4 - Stresses and Ratios
Dead Load Moment and Shear Stringer Deck
Moment (DL + SDL) 35.56 (kip-ft) 0.20 (kip-ft) Moment (WS) 7.79 (kip-ft) 0.07 (kip-ft) Shear (DL + SDL) 3.63 (kip) 0.20 (kip) Shear (WS) 0.80 (kip) 0.08 (kip)
Distributed Live Load Moment and Shear Interior Exterior
Shear Bending Shear Bending Deck 6.00 (kip) 5.13 (kip-ft) Stringer 17.02 (kip) 180.39 (kip-ft) 16.41 (kip) 144.36 (kip-ft)
Rating Factor Ratios Interior Exterior
Shear Bending Shear Bending Deck 7.09 8.31 Stringer 17.07 85,504,516.16 17.71 106,847,255.44
Additional Information Rating GVW (Safe Load Capacity) 191.48 (tons) Safe Posting Load N.A.
Rating Factor 7.09 Bridge need not be posted for this load.
γLL 1.30 (for legal loads) Multi-Presence Factor Reduction 0.95 Impact 0.33
Bridge Name: Replacement - Bog Dam 4_15-7.9_0922
Bridge Number:
092202000001024
Last Save: 5/2/23 6:41 PM
Page 8 of 14Replacement - Bog Dam 4_15-7.9_0922 - Results - v2.4.2.0
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SU5 - Live Loading Results
Maximum Moment: 423.26 (kip-ft) Maximum Moment Location From Left End: 21.54 (ft) Maximum Shear (at support): 49.44 (kip) Max. Bridge Live Load Deflection: 0.00 (in) L / 2,565,458,834,241 Maximum Reaction: 49.44 (kip)
Load Info Load Axle No. 1: 12.00 (kip) Load Axle No. 2: 8.00 (kip) Spacing: 10.00 (ft) Load Axle No. 3: 8.00 (kip) Spacing: 4.00 (ft) Load Axle No. 4: 17.00 (kip) Spacing: 4.00 (ft) Load Axle No. 5: 17.00 (kip) Spacing: 4.00 (ft)
SU5 - Stresses and Ratios
Dead Load Moment and Shear Stringer Deck
Moment (DL + SDL) 35.56 (kip-ft) 0.20 (kip-ft) Moment (WS) 7.79 (kip-ft) 0.07 (kip-ft) Shear (DL + SDL) 3.63 (kip) 0.20 (kip) Shear (WS) 0.80 (kip) 0.08 (kip)
Distributed Live Load Moment and Shear Interior Exterior
Shear Bending Shear Bending Deck 6.00 (kip) 5.13 (kip-ft) Stringer 18.65 (kip) 192.39 (kip-ft) 17.98 (kip) 153.96 (kip-ft)
Rating Factor Ratios Interior Exterior
Shear Bending Shear Bending Deck 7.09 8.31 Stringer 15.58 80,169,507.41 16.16 100,180,577.84
Additional Information Rating GVW (Safe Load Capacity) 219.85 (tons) Safe Posting Load N.A.
Rating Factor 7.09 Bridge need not be posted for this load.
γLL 1.30 (for legal loads) Multi-Presence Factor Reduction 0.95 Impact 0.33
Bridge Name: Replacement - Bog Dam 4_15-7.9_0922
Bridge Number:
092202000001024
Last Save: 5/2/23 6:41 PM
Page 9 of 14Replacement - Bog Dam 4_15-7.9_0922 - Results - v2.4.2.0
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