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REPORT
This report is an archived publication and may contain dated technical, contact, and link information
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Publication Number:  FHWA-HRT-16-007    Date:  January 2016
Publication Number: FHWA-HRT-16-007
Date: January 2016

 

Long-Term Bridge Performance (LTBP) Program Protocols, Version 1

Visual Inspection—Concrete Elements Protocols (VIC)

FLD-DC-VIC-001, Concrete Deterioration

FLD-DC-VIC-002, Concrete Substructure Condition Assessment

FLD-DC-VIC-003, Concrete Deck—Spalls and Delamination

FLD-DC-VIC-004, Concrete Superstructure and Substructure—Spalls and Delamination

FLD-DC-VIC-005, Concrete—Cracking

FLD-DC-VIC-006, Concrete—Abrasion

FLD-DC-VIC-007, Concrete—Sulfate Attack

Long-Term Bridge Performance Program Logo

Concrete Deterioration
LTBP Protocol #: FLD-DC-VIC-001


1.

Data Collected

 
1.1 None. This protocol provides a list of protocols to guide visual inspection and data recording of a bridge with a concrete deck and superstructure.  

2.

Onsite Equipment and Personnel Requirements

 
2.1 Equipment: None.  
2.2 Personnel: PRE-PL-LO-005, Personnel Qualifications.  

3.

Methodology

 
3.1 Use the segmentation and numbering system for the superstructure (FLD-OP-SC-002, Structure Segmentation and Element Identification System) so defects can be located and noted by the unique element identifier.  
3.2 Use FLD-OP-SC-003, Determination of Local Origins for Elements, to establish a local origin on each element.  
3.3 Use the data collection grid (FLD-OP-SC-001, Data Collection Grid and Coordinate System for Bridge Decks) to locate defects on the deck.  
3.4 Use the following protocols for finding defects and recording characteristics:  
3.4.1 Deck and superstructure:  
3.4.1.1 For potential spalls and delaminations on the deck: FLD-DC-VIC‑003, Concrete Deck—Spalls and Delamination.  
3.4.1.2 For each instance of spalls and delaminations on the superstructure: FLD-DC-VIC-004, Concrete Superstructure and Substructure—Spalls and Delamination.  
3.4.1.3 For each instance of cracking: FLD-DC-VIC-005, Concrete—Cracking.  
3.4.1.4 For each instance of abrasion: FLD-DC-VIC-006, Concrete—Abrasion.  
3.4.1.5 For each instance of sulfate attack: FLD-DC-VIC-007, Concrete—Sulfate Attack.  
3.4.2 Bearings:  
3.4.2.1 FLD-DC-VIS-001, Elastomeric Bearings.  
3.4.2.2 FLD-DC-VIB-002, Rocker Bearings.  
3.5 Documenting defects:  
3.5.1 Take photographs of defects using FLD-DC-PH-002, Photographing for Documentation Purposes, and create a photo log.  
3.5.2 Use sketches as needed to document defects and supplement the photographs.  
3.6 Storing data, documents, and images:  
3.6.1 FLD-DS-LS-001, Data, Document, and Image Storage—Local, for local storage.  
3.6.2 FLD-DS-RS-001, Data, Document, and Image Storage—Remote, for remote storage.  
3.7 Reporting: Transfer all metadata, data, documents, and images to Federal Highway Administration (FHWA), and/or upload all metadata, data, documents, and images into the Long-Term Bridge Performance (LTBP) Bridge Portal.  

4.

Data Collection Table

 
4.1 None.  

5.

Criteria for Data Validation

 
5.1 None.  

6.

Commentary/Background

 
6.1 This protocol provides guidance for planning the detailed visual inspection of a concrete bridge deck and superstructure that consists of reinforced or prestressed concrete members as well as a reinforced or prestressed concrete deck.  
6.2 A bridge superstructure is that portion of a bridge that receives and supports traffic loads (distributed by the bridge deck) and, in turn, transfers these loads to the bridge substructure, via the bridge bearings. A concrete superstructure can consist of girders (such as American Association of State Highway and Transportation Officials (AASHTO) standard Type I though VI I-girders, AASHTO Pavement Condition Index (PCI) standard bulb tee girders, AASHTO/PCI standard pretensioned spread or adjacent box beams, specific State standard pretensioned concrete I‑girders or bulb-tee girders, pretensioned U-beams, cast-in-place posttensioned box girders, and segmental girders), diaphragms, and girder ends made continuous for a live load.  
6.3 Bearings are considered elements of the superstructure.  

7.

References

 
7.1 LTBP Protocols:  
7.1.1 PRE-PL-LO-004, Personal Health and Safety Plan.  
7.1.2 PRE-PL-LO-005, Personnel Qualifications.  
7.1.3 FLD-OP-SC-001, Data Collection Grid and Coordinate System for Bridge Decks.  
7.1.4 FLD-OP-SC-002, Structure Segmentation and Element Identification System.  
7.1.5 FLD-OP-SC-003, Determination of Local Origins for Elements.  
7.1.6 FLD-DC-VIB-001, Elastomeric Bearings.  
7.1.7 FLD-DC-VIB-002, Rocker Bearings.  
7.1.8 FLD-DC-VIC-003, Concrete Deck—Spalls and Delamination.  
7.1.9 FLD-DC-VIC-004, Concrete Superstructure and Substructure—Spalls and Delamination.  
7.1.10 FLD-DC-VIC-005, Concrete—Cracking.  
7.1.11 FLD-DC-VIC-006, Concrete—Abrasion.  
7.1.12 FLD-DC-VIC-007, Concrete—Sulfate Attack.  
7.1.13 FLD-DC-PH-002, Photographing for Documentation Purposes.  
7.1.14 FLD-DS-LS-001, Data, Document, and Image Storage—Local.  
7.1.15 FLD-DS-RS-001, Data, Document, and Image Storage—Remote.  
7.2 External:  
7.2.1 FHWA-NHI-12-053, Bridge Inspector’s Reference Manual, Federal Highway Administration, Washington, DC, 2012.  

 

 

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