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    9. IT-9 Network Utilities
Infrastructure Development Code

DS-4.4 Design

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Drawing Ref: T400

City Plan Performance Standard: Appendix 12D
  1.  All transport network shall be designed and constructed to ensure:
    1. It is consistent with any relevant structure or urban growth plan; and
    2. It is compatible with the design and construction of the existing transport network.

 

City Plan Performance Standard: Appendix 12D
  1. The transport network shall be designed and constructed to ensure:
    1. Roads and bridges will meet the requirements of their hierarchy, function, location and design speed including appropriate road markings and signage;
    2. Minimum and maximum road gradients will be as follows:

Road Type                                                     Minimum            Maximum
Secondary Arterial                                        Must allow Self Draining    5%
Collector or Local within Industrial Zones        Must allow Self Draining    5%
Collector                                                      Must allow Self Draining    8.33%
Local / Service Lane                                     Must allow Self Draining    12.5%

  1. Arterial and Collector Roads will be able to accommodate cycle ways, and bus stops;

All surfaces and components (including street furniture) of the transport network shall be pre-approved by the Council and provide for an asset life that is suitable for its intended purpose;

  1. The reticulation, conveyance and temporary ponding functions of the stormwater management  system for the associated catchment can be accommodated;
  2. Roads required to incorporate kerb and channel shall include sumps are installed to allow surface water to enter the primary stormwater management system;
  3. New carriageways to be vested in Council shall be sealed using bitumen as the primary surface sealant;
  4. Footpaths shall be provided for roads in all zones except:
    1. Where the road is a service lane; or
    2. In the Rural Residential Zone and Rural Zones where footpaths are not required;
  5. Where street-to-street pedestrian accessways are required or provided clear lines of sight between entry and exit points shall be provided, unless this is not possible due to topographical constraints.

The following shall apply:

  1. Unless otherwise approved by Council, the design of the transportation network shall be in accordance with the IDC but may be supplemented by the documents noted in DS-4 Apx A.1 General. Consideration shall be given to pedestrian/cycle use in the design of any road.
  2. A transportation network computer modelling system approved by Council may also be used.
  3. Low impact design tools and techniques for transportation design, where appropriate, will be considered by Council. Such methods, in addition to those mentioned below may include features and techniques such as reduction in impermeable surfaces, permeable paving and filter strips. Concept approval is required from Council before undertaking low impact design.
  4. In all cases the designer shall confirm with Council the classification of roads in the vicinity of the proposed infrastructure development and ensure that the roading design conforms to the correct road hierarchy. The road hierarchy within Tauranga City is shown on the hierarchy map in the Standard Drawings.
  5. All arterial and collector roads shall be designed to cater for public transport requirements.
  6. A safety audit report may be required.  Refer to DS-4 Apx D Safety Audits and Table 1-Design Requirements for Various Road Classifications for all safety auditing requirements.

Detailed design shall be required at the time of Infrastructure Development Works Approval. Where no Infrastructure Development Works Approval is required, Council approval shall be obtained at a time required by Council and before the construction of the system.

DS-4.4.1   Urban Roads

Where not otherwise covered by the IDC all urban roads shall be designed in accordance with the widths and gradients detailed on DS-4.5.1.1 Table 1: Design Requirements for Various Road Classifications and the Austroads publications Guidelines to Traffic Engineering Practice and Guidelines for Urban Road Design APGE9/2.

Attention is drawn to the requirements of New Zealand Standard specifications, standards and guidelines to be met as appropriate to good practice for the design of urban roads.
In the case of urban roads intersecting or joining State Highways, early consultation shall be made with the New Zealand Transport Agency with regard to appropriate standards.

DS-4.4.2   Rural Roads

Where not otherwise covered by the IDC all rural roads shall also be designed in accordance with Austroads Rural Road Guide The Geometric Design of Rural Roads.


Definitions in this section

Council

Design

Designer

Development works approval

IDC

Infrastructure

Low impact design

Road

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