This guideline parallels the land development process, from Site Assessment through to Concept Design phases, focusing specifically on the issues and objectives relevant to WSD.
There are other guideline documents that provide further guidance on detailed design phases, such as the Auckland Design Manual, and Auckland Council’s codes of practice and technical design guides.
Throughout the land development process, there are several stages where approval is required from Auckland Council (Figure 2). In general all development projects involving the construction of new public assets will require a resource consent, engineering approval and code of compliance. If the concept design does not follow the conditions of existing plans, a plan change application is required, which should include a stormwater management plan highlighting the use of WSD in the concept design. Building consents are also required for most construction activities on private property and some construction activities on public property. Where development (or related activities) might occur on existing parks and reserve land, land owner approval is required.
NZS4404:2010 is the standard document relating to design phases, and NZS3915:2005 is the standard document relating to construction documentation.
A series of checklists are available from http://www.aucklanddesignmanual.co.nz/design-thinking/wsd.
They link the principles and stages described in this document with the requirements for consents under both the Local Government Act 2002 (LGA) and the Resource Management Act 1991 (RMA).
WSD concept design
Figure 3 is a flow chart indicating the detailed steps required for the Site Assessment, Site Analysis and Concept Design phases shown in Figure 2. At each step of the process, information requirements and relevant sections of GD04 are identified to assist the designer in the concept development.
The sections in this guideline relate to each of the phases shown in Figure 3. The Site Assessment phase (Section C) involves capturing all the information required up front for the
project to provide for a ‘no surprises’ approach to Site Analysis and Concept Design.
The Site Analysis phase (Section D) takes the resource map completed in the Site Assessment phase and applies environmental and development frameworks to determine the most appropriate development layout and form.
The Concept Design phase (Section E) takes the development form and adds sufficient detail to ensure the design is feasible and to allow the preparation of an initial cost estimate. The concept design should provide a sufficient level of detail for plan change applications if required.
Note: Technical design guide documents provide detailed advice for design and construction of devices.