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RHD Operational Procedure Technical Services Wing
 
Planning and Data - Bridge Inspection & Planning Division
 
OP/PD/2.1 - Management of Bridge Database
 
Purpose and Scope :

This procedure describes the process of managing and maintaining the Bridge Management and Maintenance System (BMMS) Database including monitoring and checking data from the annual bridge condition surveys, data entry etc.
 
Definitions :

Bridge Management and Maintenance System (BMMS) is a database established with condition survey of all bridges and culverts of RHD road network and is used in bridge planning, design and management role.

Form BCS-1 is used to report the basic condition of all bridges and culverts on RHD road network and the following details of the structure are recorded:

Section 1 - Location

Section 2 - Structure Type

Section 3 - Superstructure Details

Section 4 - Substructure Details

Section 5 - Foundation Type

Section 6 - Abutment protection & Approach Drainage

Section 7 - Observations (Condition Report)

Section 8 - Structure Total Score

From the structure total score, condition category of the structure is determined.

Form BCS-2 contains a summary of BCS-1 data. The purpose of this form is to allow the Sub-Divisional and Executive Engineer to make comment on the severity of the condition on each bridge. This is a major and important step in assessing the need for maintenance resources.

Form BCS-3 is used to provide sufficient information to make a preliminary cost estimate of the structure in question and the following details of the structure are recorded:

Section 1 - Location

Section 2 - Summary of Proposed Rehabilitation Works

Section 3 - Summary of Overall Bridge Condition

Section 4 - Routine & Periodic Maintenance Assessment

Section 5 - Length of shortest Diversion

Section 6 - Acceptance of the Assessment by the Executive Engineer

The information will be collected for all damaged structures, and will be used for budgetary purposes in future project formulation and to prioritise rehabilitation programmes.

Principal Bridge Inspection (PBI) A full detail inspection of a structure, viewing each key structural components, bearings, hinges, joints etc. from no more than 1 metre.
 
Responsibility :

Superintending Engineer - Planning & Data Circle (SE-PDC) is responsible for overall management of BMMS.

Executive Engineer - Bridge Inspection & Planning Division (EE-BIPD) is responsible for organising collection of filled-up BCS forms from field offices regularly, necessary site inspection, data entry etc. through his SDE/Assistant Engineer. Through Compliance monitoring support and scrutiny of the data in the field he will validate as far as possible the quality of data received.

Executive Engineer - Field Divisions is responsible for managing and satisfies himself of the quality of information being provided for the annual bridge condition survey through their SDEs/SAEs.
 
Method :

4.1 DISTRIBUTION & INSTRUCTION TO FILL UP BCS FORMS

Every year not later than September EE-BIPD will send the latest BCS-1,2 & 3 forms to all field Sub-Divisions with clear instruction to carry out the bridge condition survey as soon as the rainy season is over, record the data in the BCS forms and submit timely.

4.2 ANNUAL BRIDGE/CULVERT CONDITION SURVEY

After the rainy season, when the water levels have receded sufficiently to allow the inspection of the deck soffit and river bed the Sub-Assistant Engineers (SAEs) of field road Sub- Divisions will undertake the survey of all bridges and culverts and record the condition in BCS-1 form. After completing the BCS-1 form the SAEs will compile the BCS-1 data in BCS-2 forms and submit to their respective SDEs.

SDEs and EEs of field divisions will review the BCS-1 & 2 forms and on the basis of their findings from these forms field survey of the damaged bridges will be conducted in order to complete the BCS-3 form for onward submission to EE-BIPD.

4.3 COMPLIANCE MONITORING AND SUPPORT

To add credibility to the data received from the field the Bridge Planning and Inspection Division will undertake monitoring and support inspection of at least 1% of all structures spread throught the country. The focus is on support of the field teams and to address any misinterpretation of data input from the field. Each site inspection will be concluded with a report to the SE Bridge Planning and Data Circle who, if required will take any necessary action.

4.4 SCRUTINIZING AND DATA ENTRY

Upon receipt of the BCS-1, 2 & 3 forms from the field offices the EE-BIPD will transmit those to his the Sub-Divisional Engineer/Assistant Engineer to scrutiny whether the forms are filled up correctly. He may ask for clarification or may inspect the site for additional information.

Upon satisfied with the information data entry in the BMMS database will be organised by the Sub-Divisional Engineer/Assistant Engineer. He also, while organising data entry, will take into account the PBI report.

4.5 UPDATING THE DATABASE

The bridge database is not a fixed set of data and must be constantly updated with accurate and reliable condition information submitted annually from the field offices.
 
References :

Annual Bridge Condition Survey Manual, November 2001.

RHD Bridge Maintenance Management System User Manual.
 
Procedure Flowchart :

The procedure flowchart for this procedure is detailed below -
 


 


 

 

For duties associated with each grade of personnel see

 

Updated on : 1/12/2003

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