Engineering Specifications

 

• AUSPEC 1 - Council's specification for engineering works
• Minor works specification
• On-site stormwater detention (OSD) technical specification
• Specification for erosion and sediment control – subdivision/major construction works
• Standard details for vehicle crossings, footpaths, kerb, gutter, gutter crossings, pavings
• Narrabeen-Collaroy Fishermans Beach – Criteria for the Siting and Design of Foundations for Residential Development – Geomarine Report
• Guidelines for CCTV Investigations of Council Stormwater Assets
• Guideline for Preparing a Dilapidation Survey of Council Stormwater Assets
• Guideline for Preparing Works as Executed Data for Council Stormwater Assets
• Guidelines for Preparing a Coastal Report
• Guidelines for Preparing a Flood Risk Assessment Report
• Guidelines for Preparing a Flood Potential Statement
• Works as Executed Drainage

AUSPEC 1 - Council's Specification for Engineering Works

AUSPEC 1 is a design guide and construction specification to be used for all large scale engineering works including large lot residential subdivisions, industrial and commercial development. It covers Geometric Road design, pavement design, stormwater drainage design and erosion control and stormwater management.

AUSPEC 1 can be purchased from Council's Development Engineering Section. There are two sections to this document:

1. Design Specifications
2. Construction Specifications

• Council's fees and charges - see development engineering fees - publications AUSPEC 1 (PDF)

Minor Works Specification

Warringah Council's minor works specification covers construction works such as footpath paving, vehicle crossing construction, minor drainage works, kerb and gutter, part road construction and other engineering works required as a condition of the Development Consent.

For large lot residential subdivisions, industrial and commercial development, Council’s specification for engineering works AUSPEC 1 is to be used.

• Council's minor works specification (PDF)
• Vehicle crossings

On-Site Stormwater Detention (OSD) Technical Specification

On-Site Stormwater Detention (OSD) is required generally for all developments in the Warringah Council Local Government Area. This is to minimise the impacts on Council’s downstream stormwater drainage system that may result from the proposed development.

To assist Council in determining whether OSD is required for single dwellings (including alterations and additions), Council's OSD checklist can be filled out and submitted with the Development Application. The OSD volume may be offset, for alterations and additions to existing dwellings and new single dwellings, when rainwater tanks are used for re-use in accordance with BASIX requirements (see OSD technical specification).

A positive covenant and restriction as per user are required to be registered on the title for the OSD system to ensure regular maintenance and operation. See Council's OSD Technical Specification for sample wording.

• Council's on-site stormwater detention (OSD) checklist (single dwellings) (PDF)
• Council's on-site stormwater detention (OSD) technical specification (PDF)
• Development Applications
• BASIX requirements

Specification for Erosion and Sediment Control – Subdivision/Major Construction Works

The specification titled “Managing Urban Stormwater – Soils and Construction”  is to be used for all subdivision and major construction works in Warringah which have the potential for soil erosion.  The measures contained within the specification will prevent unacceptable environmental impacts caused by soil erosion and sedimentation onto adjoining land, drainage systems and receiving waters such as creeks, rivers and lagoons. You can obtain this specification from Landcom.

Narrabeen-Collaroy Fishermans Beach – Criteria for the Siting and Design of Foundations for Residential Development – Geomarine Report

• Download Criteria (PDF, 4.3MB)  

The Narrabeen-Collaroy Fishermans Beach – Criteria for the Siting and Design of Foundations for Residential Development provides criteria for the siting and design of foundations for residential development shown on Council’s Coastal Hazard map.