proposed amendments to the infrastructure development...

12 May 2017

Proposed Amendments to the Infrastructure Development Code (IDC)

Topic: Public Lighting

SummaryCouncil received feedback via the IDC Review Project that the IDC was out dated in thisarea and that the industry is shifting toward LED lighting as the minimum standard.Council has also had some failures of lighting components in recent months.

Current RequirementThe current IDC requires high-pressure sodium luminaires.

Amendment 1 – LED Luminaires.Council’s preference is to move to the more energy efficient LED luminaire and to align itselfwith current national standards.

Summary of InformationIDC sections DS-8 Public Lighting and AM-7 Public Lighting have been completely rewrittento align with national standards. Reviewers are advised to read both sections as newdocuments.

Approval of Documentation or Further Amendments Due to ConsultationThe Advisory Panel for this topic will consist of the following Council staff:

Ché HedgesInfrastructure Engineer

Simon FitzpatrickTeam Leader: Development Engineering

James WickhamTeam Leader: Tauranga Transport Operations Centre

The Final Approval or Decline of this topic will be undertaken by:

Christine JonesGeneral Manager: Growth & Infrastructure

Proposed IDC Documentation:

DESIGN STANDARD

DS-8 PUBLIC LIGHTING

TABLE OF CONTENTS

DS-8.1 General 1

DS-8.2 Minimum Requirements 1

DS-8.3 Regional Council Requirements 1

DS-8.4 Design 1

DS-8.5 Information Requirements 2

DS-8.6 Public Spaces 3

DS-8.7 Streetlighting 3

DS-8.8 Design Criteria 5

DS-8.9 Approved Materials 15

DS-8.10 Work Undertaken on Councils Network 15

DS-8.11 Installation 15

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DS-8.1 General

The primary goals of public lighting (at night or at times of moderate natural light) are to:

a) Provide an environment that is conducive to the safe and comfortable movement of:i) Pedestrians.ii) Cyclists and non-vehicular traffic.iii) Vehicular Traffic.

b) Discourage illegal acts or behaviour.

This is generally achieved by the installation of streetlights, cark park lighting, walkway and reservelighting. Other aesthetic lighting systems such as up-lights are occasionally used to highlight publicstructures and/or signage.

The design of public lighting shall ensure that the public lighting network effective and aestheticallypleasing, of good quality, easy to maintain and cost effective.

DS-8.2 Minimum Requirements

Designs shall provide for a public lighting system that:

a) Complies with the operative City Plan and Infrastructure Development Code (IDC).

b) Is designed to acceptable urban design, landscaping and engineering methods.

c) Minimises, isolates or eliminates health and safety hazards during both its construction and itsuse.

d) Minimises, isolates or eliminates any adverse ecological and environmental effects.

e) Minimises light spill onto neighbouring properties and upward light e.g. sky glow.

DS-8.3 Regional Council Requirements

There are no specific Bay of Plenty Regional Council requirements for public lighting.

DS-8.4 Design

The following shall apply:

a) Unless otherwise approved by Council, the design of public lighting shall be in accordance with theIDC and may be supplemented by the documents noted in DS-8 Appendix A.1 General.

b) All lighting requirements shall be designed by a person who holds an industry standardqualification for such designs, using a recognised computer design system.

c) Public Lighting (other than street lighting in a designated public road), may require a ResourceConsent and / or a Building Consent.

d) The installation shall be designed for economic use of energy.

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e) Alternative design solutions utilising computer calculations based upon Commission Internationalede L'éclairage (CIE) standards are acceptable provided that clear correlation is supplied to proveequivalence with the current version of AS/NZS 1158 for the specific project parameters

f) Detailed design shall be required at the time of Development Works Approval. Where noDevelopment Works Approval is required, Council approval shall be obtained at a time required byCouncil and before to the construction of the system.

DS-8.5 Information Requirements

The following shall be provided at the time of Development Works Approval:

a) Electronic copy of the lighting design report and lighting design plans scaled to 1:500.

b) The lighting design layout shall include all relevant topographic information, property boundaries,driveway crossovers, kerb line, footpath, landscaping, overhead power lines and any other elementsrelevant to lighting design constraints.

c) Documentation in accordance with the relevant part(s) of AS/NZS1158 to show compliance.

d) Lighting sub-category used in the design, e.g. V2, P4. These shall be recorded on each lightingplan.

e) For category V roads: Luminance calculations from Perfectlite together with Isolux plots fromAGI32, illustrating relevant contours for the lighting sub-category with illuminance and pointilluminance values necessary to demonstrate compliance. Also include a 10 lux horizontal isolux line.

f) For Category P roads: Illuminance diagrams from AGI32 illustrating relevant contours for thelighting sub-category with illuminance and point illuminance values necessary to demonstratecompliance.

g) Information shown in Table 1: Information Requirements for Category V Roads and Table 2:Information Requirements for Category P Roads.

Table 1: Information Requirements for Category V RoadsParameter Symbol NotesAverage carriageway luminance L Straight sectionsOverall uniformity Uo Straight sectionsLongitudinal uniformity UL Straight sectionsThreshold increment % TI Straight sectionsSurround (verge) illumination ratio Es Straight sectionsPerfectlite maximum spacing Straight sections

Maximum spacing at bends Bends – Summarise reduced spacing values, showing the bendradius (m), reduction factor and reduced spacing (m).

Point illuminance EphIntersections, pedestrian crossings, pedestrian refuges and definedpedestrian crossing routes at signalised crossing

Illuminance (horizontal) uniformity UE1 Intersections and pedestrian refuges onlyVertical illuminance EPV Pedestrian crossing

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Table 2: Information Requirements for Category P RoadsParameter Symbol NotesAverage horizontal illuminance Eh

Point horizontal illuminance Eph

Illuminance (horizontal) uniformity UE2

Point vertical illuminance Epv

Luminous intensity at Gamma 80 IG80 For maximum luminaire watts in the designPeak luminous intensity IPEAK For maximum luminaire watts in the designPerfectlite maximum spacing Straight sections

DS-8.6 Public Spaces

Public spaces are environments such as public precincts, transport terminals etc. A principle of CrimePrevention through Environmental Design (CPTED) is that lighting can reduce the risk of crime andimprove safety levels on local roads and public spaces. Refer to section 3.1 of AS/NZS 1158 for moredetails.

DS-8.7 Streetlighting

Streetlighting is defined as a lighting installation constructed for the purpose of illuminating theRoad Zone or public car parking.

DS-8.7.1 Road Classification

Lighting classifications shall be determined as follows:

a) Street Lighting requirements are largely determined by the road classification and sub-category ofthe road. The road classification and sub-category shall be agreed by Council prior to commencingthe design process

b) To determine the appropriate lighting classification and sub-category, sections 1.1 and 3.1 ofAS/NZS 1158 shall be used.

DS-8.7.2 Public Pedestrian Accessways


a) Public pedestrian accessways shall be illuminated so visual surveillance of the accessway from theroadway at night is possible. They shall be designed to minimise light intruding into dwellings.

b) Accessways shall be lit to the appropriate P category as set out in section 3.1 of AS/NZS 1158.Table 2.2 of AS/NZS 1158 defines the criteria for determining the lighting subcategory.

c) Luminaires shall be pole top mounted and high enough to be out of reach of vandals but lowenough to allow access from a ladder. Consider the use of 4m high lighting columns to limit spilllight.

d) Where the primary area to be lit is accessed by a road or path that also must to be lit, theaccessway shall be lit to the same standard with lighting systems of similar appearance as those inthe primary area.

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DS-8.7.3 Pedestrian Crossings


a) All Pedestrian Crossing types shall be lit in accordance with AS/NZS 1158.4. Luminaires shall havea photometric distribution specifically designed to suit pedestrian crossings.

b) At an un-signalised pedestrian crossing, AS/NZS1158.4 allows the use of a Belisha disc or a flashingBelisha beacon. Please contact Council who will advise which type is appropriate for the specificcrossing.

DS-8.7.4 Lighting Near or at Permanent Traffic Management Devices

At traffic management devices such as roundabouts, speed tables, speed humps, pedestrian refugesetc that intend to:

a) Slow traffic on category P roads:i) 3.5 lux horizontal point illuminance shall be used in accordance with AS/NZS1158.3.1.ii) This is not additional to road lighting.

b) Deter traffic on category P roads:i) Install reflective devices as per the Manual of Traffic Signs and Markings (MOTSAM).

Contact Council for advice whether the local area traffic management devices have been provided toslow or deter traffic prior to detailed design commencing.

Refer to AS/NZS 1158.1.1 for lighting of traffic management devices on V category roads.

DS-8.7.5 Private Roads, Private Ways, Private Areas


a) Streetlighting for private-ways (rights-of-way) and privately owned accessways is theresponsibility of the private owner and no private lighting shall be supplied electricity from thepublic streetlighting system.

b) Private streetlighting shall be designed to minimise the effects of the intrusion of light intodwellings.

DS-8.7.6 Rural Roads

Streetlights are not required for rural roads except as flag-lighting at intersections where required byCouncil. Streetlighting for rural areas is addressed in AS/NZS 1158.1.1 clause 3.5.

Since the ambient light and sky glow in rural areas is significantly less than in built-up areas, specialcare shall be taken to limit spill light and glare. In addition to this:

a) Street lighting shall comply with the minimum applicable standard for intersections and roadterminations.

b) Minimise lighting beyond these areas. Only provide sufficient lighting so that a pedestrian walkingalong the road always has a light in view.

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c) Priority shall be given to roads that are designated for traffic detours from main highways.

d) For isolated intersections, refer to NZTA M30.

DS-8.7.7 Reserve and Walkway Lighting

Reserve and walkway lighting includes all lighting for use in public areas not including the Road Zoneor car parking. These may include column/lantern lighting, "up-lights", floodlights and any otherlighting not otherwise specified in the IDC but approved by Council. The following shall apply:

a) The design of reserve and walkway lighting shall follow the requirements of the IDC. Where notspecified a recognised design standard and/or design method approved by Council shall be utilised.

b) The electrical power supply to the reserve and walkway lighting from the reticulation shall beowned by Council.

DS-8.8 Design Criteria


a) The lighting design shall optimise the design spacing between luminaire positions by consideringthe combination of the mounting height, luminaire type, lumen output and luminaire wattage.

b) For category P3 and P4 roads, one of the primary objectives is to reduce the luminaire power toless than 28 Watts per luminaire. Designs using luminaire power above 28 Watts will be consideredprovided this yields significant gains in the lighting column spacing.

c) The lighting design shall minimise glare and light spill on neighbouring properties and theenvironment. Designs shall display horizontal illuminance isolines, including a 10 lux line.i) AS/NZS1158 provides requirements on the obtrusive effects of public lighting.ii) AS4282 provides further guidance.iii) The maximum tilt for a luminaire shall be 0° for P Category and 5° for V Category (zero preferred)from the horizontal unless otherwise approved by Council.iv) External screens shall not be used.

d) For new designs on P Category roads, Council requires the luminous intensity at Gamma 80 to belimited to 400 cd and the peak intensity between 60° and 80° vertical at any horizontal angle to1,800 cd.

e) For designs on V Category roads, the Threshold Increment (TI) along the road shall be no greaterthan 12%, with the pedestrian traffic lights as well as the adjacent streetlights included in thecalculation.

f) The designer shall use the manufacturer’s data in conjunction with the NZTA M30 Specification tocalculate Lumen Depreciation and to calculate the design Maintenance Factor (MF).

g) The designer shall also obtain the lighting manufacturer’s lumen maintenance calculation, basedupon their proprietary method of determining lumen depreciation over 85,000 hours (energisedtime), 25⁰C ambient and 0.92 LMF (unless a more stringent factor is applicable), allowing for allelectronic and optical degradation factors. The LMF factors provided in BS5489 may be used in lieu

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of those recommended in AS/NZS1158. The designer shall use the most conservative of the twomaintenance factors for the design.

DS-8.8.1 Streetlighting Location


a) Columns shall be located in accordance with AS/NZS1158. This shall apply equally to both V and Pcategory roads unless specified below:

b) For General Columns, set back from kerb face to the face of the column shall be:i) 1m unless otherwise notedii) 3m for roundabouts (for the extent of the illuminance calculation area defined by AS/NZS1158,but not less than 5m from the tangent point as defined in AS/NZS1158.1.2 clause B6.4 and figure B4)on V Category roads.

c) For Frangible Columns (energy-absorbing or shear-base):i) If kerb present, same as b) aboveii) If no kerb present, distance from road edge (painted line or edge of seal) or:ii-a) 1m behind a rigid barrier (e.g. concrete)ii-b) Beyond the deflection zone of a non-rigid barrier (e.g. guard rail or wire rope)ii-c) 3m minimum where there is no barrier

d) For Rigid Columns:i) Where posted speed limit is 70kph or less, same as b) and c) aboveii) Where posted speed limit is greater than 70 kph:ii-a) 6m from the road edge if there is no kerb and no barrierii-b) As for sections same as b) and c) above otherwise

e) Greater offsets may be required depending on the road classification e.g. for arterial roads it isdesirable to have the columns located behind the footpath and to provide a longer outreach arm.For areas of high pedestrian usage, pedestrian specific lighting shall be considered.

f) Joint Use Columns e.g. traffic signal & lighting, provide in accordance with traffic signal columnrequirement. Where possible streetlights at signalised intersections and pedestrian crossings shallbe incorporated into joint use signal columns.

g) In new subdivisions, columns shall be located:i) To provide the correct lighting levels in accordance with AS/NZS 1158 and the IDC.ii) Aligned with the road corridor boundary unless otherwise approved by Council.iii) On designs prior to designing for the location of trees (to create the daytime aesthetics).iv) Aligned with the common boundary between adjacent property lots, orv) Aligned off the build-line, i.e. the corner of a building within the property lot (this is particularlyrelevant with regards to point c below)vi) Within 15m of the corner if it is the first lighting column in a side street. Measure from theproperty boundary facing the street that vehicle has turned from. The column shall be on thedriver’s left side.

h) Trees shall be positioned considering that the expected future dripline, when the tree is mature,will provide a minimum clearance of 2m from the dripline.

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i) The expected future dripline of the trees when mature shall be shown on the lighting designlayout. Consider the potential impact of shadows from road lighting when the trees are mature.Exercise care when selecting the species of trees and positioning them in relation to street lights.Also consider the use of 6m columns in treed subdivisions. This will result in additional lights, but willbetter distribute light onto the road from under the tree canopy and limit spill light.

j) Streetlight columns shall be clear of footpaths.

k) A streetlight shall be located within 10m on the approach side of the bus stop.

l) Where it is required to locate a lighting column under an overhead low voltage power line:i) The designer shall utilise existing poles (where possible) by selecting lamps of appropriateluminance to provide the required standard of lighting to comply with the appropriate category (e.g.P1 to P3) under AS/NZS 1158. Consider supplementing the light from the other side of the road.Brackets on distribution poles shall comply with the requirements of the Utility Operator.ii) There shall be a minimum of 1m clearance between the overhead conductor and the top of thelighting column at all times. Columns shall not exceed a height of 4 metres. The luminaire shall notprotrude beyond the front face of the kerb. The maximum upward tilt shall not exceed 5⁰. Forvoltages greater than low voltage, ECP34 shall apply.

m) Pole spacing’s shall be as per AS/NZS 1158. This may be varied where a proposed improvedlayout is approved by Council.

n) Streetlights shall be positioned to be clear of trees. For mature tree-lined roads with trees on oneside, columns shall be placed on the opposite side. If there are trees on both sides, columns on eachside may be required, located midway between trees, with long outreach arms to reach out underthe canopy. Pruning trees as part of the design is not recommended as this will be on-going andcannot be guaranteed.

o) Columns shall be located outside the dripline and where the tree root structure cannot interferewith underground cabling or other underground services (unless tree pits are used to confine theroot structure).

p) Streetlights shall be positioned 1m clear of vehicle crossings. Safe sight lines for drivers exitingtheir properties shall be considered when locating streetlights.

DS-8.8.2 Lighting Columns

Drawing Reference: T801


a) All columns shall comply with NZTA M26 and be supplemented by a PS1 Producer Statement.

b) Shear base columns shall be used where the posted speed limit is ≥70 kph, unless the column islocated behind a barrier, beyond the deflection zone.

c) Where b) does not apply, Columns shall have a ground-planted base in residential and rural-residential areas unless otherwise approved by Council. They shall have a frangible base elsewhere.

d) Each column shall be individually numbered at time of manufacture, together with the month andyear of manufacture. In addition to the unique column number, a Quick Response (QR) code shall be

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attached for easy on-site data access. These labels shall be positioned above the gear door at aheight of 2m above ground.

e) All columns shall be hot-dip galvanised to prevent damage from the elements e.g. rusting etc.Galvanised columns may then be coated for aesthetic purposes before installation from the base ofthe column to 0.5m above final ground level using a two-pot epoxy paint or powder coatingapplication approved by Council.

DS-8.8.2.1 Column Height, Arm Length, Luminaire Mass and Sail Area

All columns shall be constructed as specified in Table 3: Standard Column Heights, Arm Lengths,Luminaire Mass and Sail Area below:

Table 3: Standard Column Heights, Arm Lengths, Luminaire Mass and Sail AreaNominal Column Height

(m)Maximum Bracket Arm

Outreach (m)Luminaire Mass

(kg)Luminaire Sail Area

(m²)14.0* 4.0 15.0 0.1512.0 4.0 15.0 0.1510.0 3.0 13.0 0.128.0 2.0 9.0 0.10

6.0* 1.0 8.0 0.10* Appropriate for single outreach only.

a) Standard columns shall have a curved outreach bracket arm with a 5° upward tilt.

b) The minimum spigot diameter shall be 42mm.

c) The minimum thickness of steel plate used in any structural column element shall be at least2mm. Special requirements from AS/NZS 4676 apply if the thickness of steel used in any structuralelements of the column is less than 3mm.

DS-8.8.2.2 Wind Loading


a) Columns shall be designed to safely sustain the appropriate loads as set out in the current versionof AS/NZS 1170.2. Refer to Table 4: Factors to Determine Site Wind Speed.

Table 4: Factors to Determine Site Wind Speed

Description Factors AS/NZS 1170.2:2002Reference Clauses

Regional gust wind speed, VR45 m/s(design life 50 years, Region A)

Table 3.1Regional Wind Speeds

Wind directional multipliers, Md1.0(any direction)

Table 3.2Wind Direction Multiplier

Terrain/height multiplier, Mz,catTerrain Category 2,site elevation 0m; Mz,cat

Clause 4.2Terrain/Height Multiplier

Shielding multiplier, Ms 1.0 Clause 4.3Shielding Multiplier

Topographic multiplier, Mt 1.0 Clause 4.4Topographical Multiplier

b) Wind loadings are assumed to be non-directional, i.e. the worst orientation of the column isconsidered. Designs that consider wind direction, with respect to the orientation of the lightingcolumn, may be warranted in special cases, but this is generally not necessary.

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c) Wind pressures are based on design wind speeds for each wind zone as per Section 5 of AS/NZS3604 and are calculated in accordance with AS/NZS 1170.2.

d) The minimum drag coefficient is taken as for a smooth round shape (CD = 1.2). Other shapes willrequire modification with the appropriate modification factor in accordance with Table E4 of AS/NZS4676.

e) The frontal area of luminaires shall be taken from the orientation that results in the greatest windexposed surface, and the force on these is assumed to act at the top of the column. The frontal areashall include all other attachments, motifs etc., which are not part of the main lighting columnstructure.

f) Allowance shall be made for the additional forces due to wind on a 1m² fixed sign; or for a singleoutreach, one 0.9m x 1.8m banner; and for a double outreach, two 0.9m x 1.8m banners, mounted2.5m above ground level. Columns may be fitted with either a sign or banner(s), but not both.

g) Column bases may require appendages to prevent twisting of the poles in extreme wind events.The following formula shall be used to calculate the pole loading due to wind speed.

DS-8.8.2.3 Minimum Column Strengths

Steel column strengths shall be based on the requirements of AS/NZS3404 and AS/NZS4600. Steelsection strength requirements apply to the base of the column (at the top of the concrete footing),i.e. not necessarily at the ground surface. Minimum section modulus requirements shall take intoaccount any service opening near the critical location at the base. Locations of openings other thanat the base shall also be considered.

DS-8.8.2.4 Deflection and Vibration

The complete assembly (e.g. column, outreach and luminaire) shall be designed to minimisedeflection and vibration. To account for fatigue, the lateral liner deflection of the column shall notexceed hp/15, where hp is the height of a column above ground level.

DS-8.8.2.5 Dynamic Response Check


a) Translational Response:i) Dynamic response of a light column may subject the structure and fixtures to excessiveacceleration and forces. Where structures have natural frequencies less than 1Hz, Section 6 ofAS/NZS 1170.2 requires dynamic analysis to be carried out.ii) The dynamic response of a light standard may be in a number of vibrational modes, includingfundamental translational (lateral) cross-wind response as well as torsional response, particularlywhere the fixtures are eccentric and have high mass.

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b) Torsional Response:i) The torsional response may be combined with the translational response. As with the translationalresponse, Section 6 of AS/NZS 1170.2 requires dynamic analysis to be carried out for structures withnatural frequencies less than 1Hz.

c) Wind-Sensitive Structure:i) The dynamic analysis of a wind-sensitive structure is outside the scope of this document andspecialist design will be required where the structure is deemed to be wind sensitive.

DS-8.8.2.6 Switchboard (Door Cavity Opening)


a) The door cavity opening shall be positioned to permit safe access for maintenance by:i) Not facing the street.ii) The door cavity opening being accessible at all times.

b) The door cavity opening shall be a standard size of 300mm x 150mm. The base of the door cavityopening shall be located between 600mm and 900mm above finished ground level, to provide safeand easy access for maintenance.

c) The door cavity opening shall be prevented from being opened by unauthorised persons, by theuse of fasteners requiring a specific tool to gain access to the switchboard.

DS-8.8.2.7 Shear Base Columns

Shear base columns are only to be installed in speed zones of 70km/h or greater. All other speedzones shall utilise flange base or ground planted columns. All shear base type columns shallincorporate IP68 plug and socket connection to ensure that the pole disconnects from the livesupply in the event of vehicle impact or similar occurrence (Transnet Amerace 65U or equivalent).

DS-8.8.2.8 Foundation Design

Footings for lighting columns are classified into two broad groups:

a) DS-8.8.2.8.1 Direct Planted Footings.

b) DS-8.8.2.8.2 Pad Footings.

DS-8.8.2.8.1 Direct Planted Footing

A direct planted footing is simply an extension of the pole. It relies primarily on varying the length ofthe extension (i.e. the embedment depth) and its projected area, to engage the required resistanceof the foundation to overturning and sliding. This type is widely used for foundations with a bearingstrength between 100kPa and 240kPa.

The embedment depth of directly planted poles shall be calculated in accordance AS/NZS 4676,taking due account of the mechanical properties of the particular foundation materials. Theembedment depth should not be less than 500mm in any soil. The top 500mm of any pile foundationshall be ignored when determining capacity.

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DS-8.8.2.8.2 Pad Footing

Pad footings are usually constructed from concrete and rely primarily on their mass and thedistribution of this mass to provide the required stability. For this type of footing, the embedmentdepth is not as critical a factor in the overturning resistance of the pole, but may be a majorconsideration in generating resistance to sliding.

Base fixing bolts shall be designed in accordance with AS/NZS4676 and shall be arranged so thatcable access through the base plate hole is not impaired.

DS-8.8.2.9 Surface Coatings


a) Surface finishes shall be smooth and free from obvious blemishes.

b) Final coating is optional. However, all columns, complete with mitred and curved outreach arms,shall be finished, both internally and externally, in one of the following forms:i) Hot dipped galvanised mild steel – painted, unpainted or powder coatedii) Stainless steel (316 grade) – painted, unpainted or powder coated

DS-8.8.2.9.1 Repair of Damage to Surfaces


a) Corrosion protection that has been damaged by welding, erection or other causes shall berectified before the column is put into use. The damaged area shall be prepared and shall be dry andclean, free from dirt, grease, loose or heavy scale of rust before the corrosion protection is applied.

b) The corrosion protection shall be applied as soon as practicable and before noticeable oxidationof the cleaned surfaces occurs. Damaged zinc coating shall be restored by application of anequivalent thickness of a suitable zinc paint conforming with:i) AS/NZS 4680.ii) AS/NZS 3750.9.iii) AS/NZS 3750.15 or with thermal zinc spray.

DS-8.8.2.9.3 Contact with Ground Surface

Structural steel sections shall not make direct contact with the ground. All sections shall beembedded in or bear on concrete, or be otherwise protected. Concrete poured around steelstructures shall be continuous and not cast in sections.

All lighting columns shall, on top of the all-over galvanisation, be covered in an extra epoxyprotective coating from 200mm above the ground level to the base of the column. Bare, untreatedmetal is not acceptable.

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DS-8.8.2.9.4 Warranty


a) A copy of the coating applicator’s certification that the coating has been applied in accordancewith the coating manufacturer’s specification shall be provided prior to the installation of thecolumns.

b) If the applicator does not possess the necessary certified applicator status, the coating suppliershall monitor the work and provide the required certification.

c) Materials and paint finishes of columns and luminaire bodies shall be unconditionally guaranteedagainst fair wear and tear for a minimum of 10 years, commencing from the date of handover toCouncil.

DS-8.8.2.10 Welding

All welds and welding processes shall comply with the current standards outlined in AS/NZS1554.

DS-8.8.2.11 Quality Assurance Inspection

Council may elect to nominate an inspector to ensure the quality of the lighting column including,but not limited to the quality of the:

a) Steel.

b) Welding.

c) Protective Coating.

The manufacturer shall supply Council with all certifications to ensure the quality of the column.

DS-8.8.2.12 Column Protection


a) Structural members shall be adequately protected during handling and transport, to minimisedamage to the corrosion protection. The columns shall be individually wrapped in heavy-dutypolythene, or similar method of protection, to protect them from damage. The protective wrappingshall not remain in place for any extended period of time, e.g. during site storage, as damage to thepaint finish is likely to occur.

b) Components that are transported in nested bundles shall be separable without damage to othercomponents or their coatings. Consider the use of lifting beams with appropriately spaced liftingpoints and slings, or lifting with properly spaced forklift tines.

c) The column wrapping shall be applied while the column is installed and stood upright in theexcavation, and the wrapping shall be removed upon completion of installation.

d) Any damage caused before the handover to Council shall be repaired as new, with all warrantiesremaining intact. Where the damage is considered too severe, the contractor shall, upon written

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instruction from Council or its representative, replace the damaged equipment with a new item atno cost to Council.

DS-8.8.2.13 Mowing strip

A smooth concrete mowing strip shall be provided around the base of lighting columns whereappropriate. The concrete shall be 25MPa strength with a minimum width of 200mm on all sides anddepth of 150mm. The concrete shall be boxed, finished level with the surrounding ground level andhave a smooth trowel finish, slightly graded away from the column, to eliminate water collectingnext to the column.

DS-8.8.3 Luminaires (Lanterns)


a) All new or replacement luminaires shall be light-emitting diode (LED).

b) All luminaires shall comply with the requirements of AM-8.3 Luminaires.

DS-8.8.4 Electrical Supply


a) Each street light shall be connected directly to the distribution company reticulation. In somesections of road, it may be cost effective to connect more than one light to a single connection fromthe low-voltage network.

b) The electricity reticulation supplying the streetlights is specified by the local network utilityoperator, which is the owner of the reticulation system.

c) Design of the cables and switching shall be in accordance with the specifications and requirementsof the local network utility operator and all new installations shall be underground.

d) The Designer shall contact the local network utility operator for details of points of supply,switching and any other requirements and shall demonstrate to Council that this information hasbeen obtained.

e) The electrical power supply to the streetlights from the reticulation shall be owned by the localnetwork utility operator.

f) Where there is no established utility operator reticulation and many lights have to be suppliedfrom a single network connection, install two separate cables with each cable looping into everysecond streetlight column. This means that, if a circuit fault occurs, only every second light will beout. This system is most used along long cycle routes. Cabling configuration shall be agreed withCouncil before design concludes.

DS-8.8.4.1 Electrical Connection


a) The number of lights connected to a single circuit shall be limited to four in any one direction fromthe supply point. Where more than one light is fed from a single distribution company connection, a

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10mm² N/S single core cable shall be looped in and out of each column. Breach joints are notallowed as part of a new design. The boundary between the network company and the street lightnetwork is the load side of the fuse connected to the common LV network.

b) Council is installing adaptive lighting in selected areas. This reduces spill light and sky glow, as wellas energy consumption at times of reduced traffic volumes. The Central Management System (CMS)can be further extended through traffic sensors to be fully interactive, adjusting the light levels. Inaddition, allowance can be made for weather conditions.

c) At the base of each column, between 600-900mm above ground level, a fuse board shall beinstalled inside the column to meet the requirements of AS/NZS 3000 with a neutral and earth bar tocomply with the requirements of an installation. A 6 amp type C HRC fuse link shall connect the lightto the incoming supply. Miniature circuit breakers (MCBs) are not permitted.

d) Slim columns approved for use on the network may use Transnet Amerace 65U in line fuseconnectors (IP68) or equivalent. The neutral and earth bar arrangement shall still comply withAS/NZS3000.

e) All shear base type columns shall incorporate IP68 plug and socket connections to ensure that thecolumn disconnects from the live supply in the event of vehicle impact or similar occurrence(Transnet Amerace 65U or equivalent).

f) In areas where a distribution company’s network is overhead and Council has installed luminaireson distribution company poles, each luminaire shall be connected directly to the distributioncompany supply using an HRC fuse in the live conductor. The fuse carrier shall be a 20 amp type. TheHRC fuse link shall be 6 amps with fusing characteristic type C. Each luminaire along the street shallbe connected to alternate phases to keep the load on the low-voltage network balanced.

g) Luminaires attached to utility operator poles shall comply with the utility operator standardprocedures.

h) The boundary between the street light network and the network company is the load side of thefuse.

i) Council is in the process of changing the control of all streetlights to a Central Management System(CMS). During the changeover, a mix of control types will co-exist. Council will advise the controltype to be used in any particular area.

j) The cable from the fuse board at the base of the column to the luminaire shall be two-core2.5mm2 neutral screen. The screen shall be earthed.

k) Each column shall be earthed by means of 10mm² copper insulated wire, exothermically weldedto a driven earth electrode (16mm diameter copper-bonded steel earth rod), located 300mm fromthe column base. Sherlock connectors are approved for burying. The connector shall be buried300mm below the pavement surface. AS/NZS 3000 applies.

l) Where it is not possible to install a driven earth electrode due to rock for example, the followinghorizontal earth electrode is acceptable:i) A six metre (6m) length of 35 mm2 (19/16) bare (uninsulated) copper conductor buried to a depthof 600mm below the surface. The conductor shall be embedded in Bentonite slurry or GroundEnhancement Material (GEM). The buried conductor shall be placed with 3m either side of the

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lighting column. The horizontal earth electrode to column connection shall be the same as describedabove for the driven earth electrode.

m) Each street light position is an installation as defined in AS/NZS 3000. All work shall be carried outin accordance with this standard, as well as Electricity (Safety) Regulations 2010 and the applicableelectrical codes of practice.

n) Safe distance from electric lines and cables shall be maintained at all times. ECP 34 and the SafetyManual parts 2 and 3 Electrical Industry (SM-EI) set out the minimum approach distances forapproved qualified staff with current Work Type Competencies (WTC).

DS-8.8.5 Decorative Lighting

Decorative lighting includes "up-lights", illuminated bollards and any other lighting not otherwisespecified in the IDC but approved by Council. The following shall apply:

a) Decorative lighting may be permitted in residential streets, minor roads and in some intermediateroads.

b) Up-lights shall not present a tripping or slip hazard.

c) Internal anti-glare attachments shall be positioned to limit the upward light.

d) The construction and finish of bollard luminaires shall be consistent with the requirements forcolumns and luminaires. The maximum luminous intensity in any normal viewing direction shall notexceed 500cd/m².

e) All luminaires shall comply with the requirements of AM-8.3.2 Decorative Luminaires.

DS-8.8.6 Traffic Signals

Refer to DS-4.9.5 Streetlight and Traffic Signals.

DS-8.9 Approved Materials

Refer to AM-8 Public Lighting. Where no product or material for the specific design is included onthis list, this shall be discussed with Council for advice and approval.

DS-8.10 Work Undertaken on Councils Network

Anyone working on the Council lighting network shall:

a) Have Council approval to do so.

b) Comply with all Health and Safety requirements related to the task/s they are undertaking.

DS-8.11 Installation

All construction shall comply with the New Zealand Building Code and the appropriate New Zealandstandards.

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Joint Use Columns e.g. traffic signal & lighting, shall be provided in accordance with traffic signalcolumn requirements. Where possible streetlights at signalised intersections and pedestriancrossings shall be incorporated into joint use signal columns.

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DS-8 - Appendix A

Associated Standards

DS-8 - Appendix A.1 General

The latest revision or operative version of the following standards shall be used in conjunction withthe IDC:

a) Council documentation:i) City Planii) TCC Traffic Systems Design and Implementation Guidelinesiii) Traffic Systems Design and Implementation Guidelines.

b) New Zealand/Australian/British Standards:i) AS/NZS 1158 Lighting for Roads and Public Spacesii) AS/NZS 3000 Australia/New Zealand Wiring Rulesiii) NZS 4203 General Structural Design Loadings for Buildingsiv) AS/NZS 4676 Structural Design Requirements for Utility Services Polesv) AS/NZS 4677 Steel Utility Service Polesvi) AS/NZS 7000 Overhead Line Designvii) AS4282 Control of the Obtrusive Effects of Outdoor Lightingviii) NZTA M19 Tubular Steel Lighting Columnsix) NZTA M26 Specification for Lighting Columnsx) NZTA M30 Specification and Guidelines for Road Lighting Design

c) Other reference material:i) Signal Design Guidelines.ii) Resource Management Actiii) New Zealand Building Activ) Health and Safety Work Actv) Electrical Codes of Practice (ECP) and standards referenced therein.vi) New Zealand Radio Interference Notice 1958vii) New Zealand Radio Interference Notice 1985viii) New Zealand Radio (Television) Interference Notice 1961.ix) Electricity Actx) Electrical (Safety) Regulations 2010.xi) Relevant Statutory Acts, Regulations and Bylaws.xi) Network Supplier’s Health and Safety Standards (NHSS).

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DS-8 - Appendix B

Notable Differences between DS-8 and National Standards

DS-8 - Appendix B.1 General

The following are instances where Councils requirements vary from the standards:

a) The maximum tilt for a luminaire shall be zero degrees for P Category and 5° for V Category (zeropreferred) from the horizontal unless otherwise approved by Council.

b) The Threshold Increment (TI) along the road shall not be greater than 12%.

c) Category P roads: Illuminance diagrams from AGI32 illustrating relevant contours for the lightingsub-category with illuminance and point illuminance values are necessary to demonstratecompliance.

d) Category P roads: Record maximum luminous intensity at Gamma 80 on the drawings. It shall notexceed 400cd. Similarly, the peak luminous intensity shall not exceed 1800cd.

e) For category P roads the maximum luminaire power shall not exceed 28 Watts unless agreed withCouncil.

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DS-8 - Appendix C

Lighting Design Submission Checklist

DS-8 - Appendix C.1 General

The following shall be utilised when providing lighting designs.

Lighting Design Submission Checklist1. Initial Considerations

a) A holistic approach to the lighting design has been considered.

b) A night site visit (where applicable) has been completed, identifying features such as CCTV cameras, treesand neighbouring properties.

⃝

⃝

2. Area Classification

a) An appropriate lighting sub category classification has been agreed with Council for all roads with thedesign scheme.

b) The lighting classification/sub category for each road is:

⃝

3. Light Source

Only LED luminaires are proposed. ⃝

4. Luminaire Selection

Only luminaires included on the NZTA M30 Specification Approved List are proposed for this design. ⃝

5. Column / Pole

a) Lighting Columns on the NZTA M26 Specification Approved List are proposed for this design.

b) Lighting Columns on the Tauranga City Council Approved Materials List are proposed for this design.

c) Other Lighting Columns e.g. neither a) or b) are proposed for use with this design, a PS1 ProducerStatement has been provided and these columns have been approved by Council.(Alternative lighting columns may be submitted for approval for a specific project. These will be assessedagainst the respective standards in Appendix A and shall be approved by Council prior to detailed designcommences.

⃝

⃝

⃝

6. Electrical Considerations

a) Electrical reticulation has been specified (where applicable).

b) For connections to overhead lines, Powerco have been engaged.

⃝

⃝

7. Required Information

All required information as described in section 12.8 is attached. ⃝

Certified By:

Date:

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DS-8 - Appendix D

Lighting Column Submission Checklist

DS-8 - Appendix D.1 General

The following shall be utilised when providing lighting columns.

Lighting Column Submission Checklist

Column Manufacturer:

Model Name/Number:

Cost Per Unit:

Aspect YES1. Height and Outreach LengthThe column has a nominal height and a maximum outreach arm as outlined in Table D1. ⃝

2. Tilt AngleThe outreach arm has an upward tilt angle of 5°. ⃝

3. Permanent Design LoadThe column is designed to take the load of a standard luminaire as outlined in Table D1. ⃝

4. Wind Design LoadThe column design must comply with the latest standards set out in AS/NZS 1170.2 and must be designed totake the load on a 1m2 sign attached 2.5m above ground level.

⃝

5. Structural Steel ThicknessThe minimum steel thickness for the in ground section of the column with a nominal height greater than 10mis not less than 3mm. Other structural elements of the column is not less than 2mm thick.

⃝

6. Steel PropertiesAll structural steel used to manufacture the column complies with the standards set out in NZS 3404. ⃝

7. DeflectionsThe column must be designed to have a maximum deflection of no more than ±3°. ⃝

8. Dynamic ResponseThe dynamic response of the column does comply with Section 6 of AS/NZS 1170.2 ⃝

9. Switchboard Door Cavity OpeningThe base of the switchboard door cavity opening is located between 600mm and 900mm above finishedground level and requires a special tool to open.

⃝

10. Protective CoatingThe entire column, both internally and externally, is galvanised or otherwise protected by a Council approvedcoating system.

⃝

11. Base SectionOn top of the overall galvanisation, the base section of the column does have an approved extra protectivecoating from 200mm above ground level to the base of the column.

⃝

12. WeldingAll welding on the column complies with AS/NZS 1544. ⃝

13. Design LifeThe column has a minimum design life of 50 years. ⃝

Note: If any column submitted does not comply fully with the above points, please provide all the necessaryinformation (i.e. design calculations or manufactures warranty) for alternative design consideration. ⃝

New Zealand DistributorCompany Name:

Contact Name: Position:

Phone Number: Email Address:

Signature: Date:

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DS-8 - Appendix E

Lighting Column Evaluation Checklist

DS-8 - Appendix E.1 General

The following shall be utilised when assessing structural performance of lighting columns.

Lighting Column Evaluation ChecklistAspect Result

1 Height and Outreach Length Pass ⃝ Fail ⃝

2 Tilt Angle Pass ⃝ Fail ⃝

3 Permanent Design Load Pass ⃝ Fail ⃝

4 Wind Design Load Pass ⃝ Fail ⃝

5 Structural Steel Thickness Pass ⃝ Fail ⃝

6 Steel Properties Pass ⃝ Fail ⃝

7 Deflections Pass ⃝ Fail ⃝

8 Dynamic Response Pass ⃝ Fail ⃝

9 Switchboard Door Cavity Opening Pass ⃝ Fail ⃝

10 Protective coating Pass ⃝ Fail ⃝

11 Base Section Pass ⃝ Fail ⃝

12 Welding Pass ⃝ Fail ⃝

13 Design Life Pass ⃝ Fail ⃝Identify any issues with the Column

Recommend Column for Approved Column List Yes ⃝ No ⃝Assessment Completed By:Company Name:

Contact Name: Position:

Phone Number: Email Address:

Signature: Date:

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PROPOSED EXAMPLES FOR NEW STANDARD DRAWINGS

Streetlight - General

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Streetlight – Column Electrical Connections

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Streetlight – Column Earthing Detail

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Streetlight – Connection Controls

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Streetlight – Typical Shear Base Detail

APPROVED MATERIALS

AM-8 PUBLIC LIGHTING

TABLE OF CONTENTS

AM-8.1 General 1

AM-8.2 Columns 1

AM-8.3 Luminaires 1

AM-8.4 Electrical Components 2

1

AM-8.1 General

Council has adopted the NZTA approved lists for public lighting components. Therefore, Council doesnot provide a list of its own.

The following section summarises the requirements for Public Lighting products. This aligns with theNZTA approval process and approved products.

AM-8.2 Columns


a) All lighting columns must have a minimum 50-year design life.

b) The design must be in accordance with:i) AS/NZS 4676 Structural Design Requirements for Utility Services Poles.ii) AS/NZS 4677 Steel Utility Service Poles.

c) Each column shall be individually numbered at time of manufacture including the month and yearof manufacture.

d) All construction shall comply with the New Zealand Building Code and the appropriate NewZealand standards.

AM-8.2.1 Column Coating

Surface preparation, coating and repair shall be in accordance with:

a) AS/NZS 2312.

b) AS/NZS 4680.

c) AS/NZS 3750.9.

d) AS/NZS 3750.15.

e) AS/NZS 1554.1.

AM-8.3 Luminaires

Luminaires shall follow the requirements of:

a) AM-8.3.1 Streetlight Luminaires.

b) AM-8.3.2 Decorative Lighting Luminaires.

AM-8.3.1 Streetlight Luminaires


a) All new luminaires shall be light-emitting diode (LED) type.

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b) Luminaires shall be manufactured and tested in accordance with:i) SA/SNZ TS 1158.6.ii) AS/NZS60598.2.3.iii) NZTA Specification M30.iv) AS/NZS3000.

c) Luminaire type shall be as approved and listed on the NZTA Specification M30 Approved SupplyList.

d) If a new luminaire has been approved by NZTA but is not on the M30 Approved Supply List, anapproval letter from NZTA shall be provided to Council for consideration.

e) Roadway luminaires shall be fitted with a 7 contact National Electrical Manufacturers Association(NEMA) receptacle, compliant with ANSI C136.41:2013.

f) The driver shall be Digital Addressable Lighting Interface (DALI) dimmable constant current driver.

AM-8.3.2 Decorative Luminaires


a) All decorative lighting proposals shall be submitted to Council for specific approval.

b) In-ground up-lights shall:i) Shall be LED type.ii) Meet AS/NZS 60598.1.iii) Have impact resistance of IK10.iv) Have ingress protection of IP67 or IP68.

c) Labelling shall be in accordance with the current version of SA/SNZ TS 1158.6.

AM-8.4 Electrical Components

Electrical equipment and components shall be:

a) Manufactured to comply with the applicable New Zealand or international standards as referredto ini) AM-8.3.1 Streetlight Luminaires.ii) AM-8.3.2 Decorative Luminaires.

b) Readily available as spare parts.

c) Incorporated into the luminaire or column.

d) Protected against the ingress of dust and moisture to the appropriate ingress protection (IP) leveland be easily accessible for repair or replacement.

Warranties on these components shall be the manufacturers’ standard warranty and be applicablefrom the date of handover of the installation to Council for at least another 10 years.

proposed amendments to the infrastructure development...

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