Maribyrnong City Council – Drainage Data Collection and Revaluation

Maribyrnong City Council – Drainage Data Collection and Revaluation The provision of municipal stormwater drainage network data collection and revaluation, to enable the collection of a complete inventory to update Council’s GIS, financial and Assets databases.

Drainage Data Collection and Revaluation

Background

The provision of municipal stormwater drainage network data collection and revaluation, to enable the collection of a complete inventory to update Council’s GIS, financial and Assets databases.

The contract also required the identification of both structural and serviceability issues, as well as identification of areas requiring further investigation.

Objectives

The project had two main requirements:

1. The collection and verification of the stormwater drainage network

2. The revaluation of Council’s stormwater drainage network

Scope Of Services

The data collection was undertaken throughout the entire Maribyrnong LGA.

Specific Requirements

Council supplied digital drainage data, which show the approximate location of the known drainage network, including pits, pipes, and end walls.

The specification required the following tasks to be undertaken:

Specific Requirements

Detailed analysis of the supplied drainage was carried out in MapInfo Professional.

Pit locations were surveyed using RTK GPS providing high horizontal and vertical accuracy. Pits and pipes were linked and fully attributed using AssetMap software and Motion tablet computers. Pipe connectivity and condition were assessed using custom built zoom cameras.

All accessible pits and pipe were inspected to ensure complete network coverage.

Traffic management plans and traffic control was supplied by Council’s incumbent contractor.

The valuation was undertaken in accordance with Australian Accounting Standards. A Revaluation, rather than Cost, approach was adopted to determine the Fair Value for the stormwater class of infrastructure assets. In addition, a Greenfields based approach was applied to determining the valuation as directed by Council.

Deliverables

The project deliverables included:

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