Street Lighting Design Guide 4th Edition

8/10/2019 Street Lighting Design Guide 4th Edition

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Environment Department Street Lighting Section

Street Lighting Design Guide

4thEdition

Standard Development Specification - Street Lighting Design Guide 08/07/2010


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Contents Page

Introduction 3

Design Guidance 3-9

Obstructions to Avoid 10

Trees 10Bushes and Hedges 11Overhead Lines 11-12

Vehicle Accesses/gateways 12Bedroom Windows 12Footpaths 12-13

Fold Down (Raising and Lowering or Mid-hinged) columns 14

Column Colours 14

Checks on Completion 14-

Visual Checklist 15-19Electrical Checklist 20

Inventory 21-22



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1. Introduction

This is the forth edition of the Street Lighting Design Guide (formally entitledGuidelines for Siting and Design of Illuminated Street Furniture in the PublicHighway.

The document is the 2ndin a suite of documents consisting of :

The Street Lighting Policy Document (4threvision) PFI Standard Design Specifications (including the Street Lighting Design Guide

and the Street Lighting Material and Works Specification) Standard Detail Drawings (Series L) Manual for Streets.

It is intended that this document be read in conjunction with these other publications.

Installing any type of street furniture on the public highway can cause problems;whether they are obstructions by tree, overhead lines, vehicle access or concerns fromlocal residents.

This guide has been produced in order to overcome some of these general issues wherethey relate to street lighting, illuminated bollards or signs etc. However, it should not be

viewed as a be-all and end-all guide as each site will have its own unique set ofcircumstances which will dictate the final scheme design.

2. Design Guidance.

General guidance on whether lighting should, or should not, be installed can be found inthe Street Lighting Policy Document. Tables 2.1 2.3, below, indicate the lighting levelsto be achieved in Zones E2-4.


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Environmental Zones, E1 to E4 Light ing classes

Classes determined by CEN/TR13201-1:2004, BSEN13201-2-4:2003, BS54

E1 - Intrinsically Dark, e.g. National Parks & E2 - Low Distr ict Brightness e.g. Rural or Sm

Type of Road Lighting class Minimum RaValue

Part-Nightdimming in

K.Lumens %reduction

Colu

A35 Redbridge Causeway/Totton By Pass highmast lighting scheme traffic flow >15,000

Me2 20 25

Strategic Route (A & All Dual Carriageways)

traffic flow >15,000 ME3a 20 25

Main Distributor (Other A) traffic flow>15,000

ME3a 20 25

Secondary Distributor (B & C Class) ME3b 20 25

Road linking main and secondary roads ME5 20 25

Subsidiary Roads high crime & high trafficflow

S6 6025

Subsidiary Roads high crime & normal trafficflow

S6 6025

Subsidiary Roads high crime & low trafficflow

S6 6025

Footpaths/ Cycle paths high crime S6 60 25



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Village Centres CE4 60 25

All low crime roads and Un-adopted-Parish/District Lighting

S7 80 25



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E3 - Medium District Brightness e.g. Small Towns/Urban Centres



K.Lumens %

reduction

Colu

Strategic Route (A & All Dual Carriageways) traffic flow>15,000

ME2 2025

12m

Main Distributor (Other A) traffic flow


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E4 High District Brightness, e.g. Town/City Centres of High Activity



K.Lumens %reduction

Colu

Strategic Route (A & All Dual Carriageways) traffic flow>15,000

ME2 2025

12 to 3

Main Distributor (Other A) traffic flow=80

Day Eave Day EminNight Eave

Night E

350 150 100 50

Basingstoke Churchill Way Underpass As set out inAppendix 4



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Notes:

1. All bracket/lantern combinations where the column is 8m or higher then the lantern shall be flat glass.

2. For column heights below 8m in Environmental Zones E1 & E2 then the Lantern bowl shall be dished with thethe bottom of the bowl and the edge of the Lantern or internal reflector shield.

3. For column heights below 8m in Environmental Zones E3 & E4 then the Lantern bowl shall be dished with thethe bottom of the bowl and the edge of the Lantern or internal reflector shield.

5 All Control Gear supplied shall be electronic which can run:

(i) at full power;

(ii) be dimmed and restored to full power at specific times during the night excluding School CrossingMessage Signs, Illuminated Pedestrian Refuge Beacons, Illuminated Traffic Signs and Illuminated

(iii) similarly switched off and on at specific times during the night. The dimming facility must be capabelectronic ballasts supplied under this contract.

6 Lighting Class S7 for is deemed to be an indicator of a One for One replacement of columns unless otherwise

7 All industrial estates will be lit utilising columns heights of 8m or above and have a minimum lighting level of S

8 For the avoidance of doubt, where an Ra value of greater than Ra60 is specified for S class lighting category

taken into account any reduction in lighting class and the Designer shall design to the lighting class as set out

9 Remote Monitoring and Management Systems (RMMS) shall not be fitted to any item of Apparatus which has

10 All lighting classes, where dimmed, shall be dimmed from midnight to dawn unless instructed by the Authority

11 Should RMMS not be installed the dimmable Control Gear shall be capable of being re-programmable on

agreed with the Authority as part of the normal planned maintenance activity

Table 2.3


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Table 2.4is intended to give general guidance on acceptable mounting height and lanternwattage combinations.

BS Category Mounting Height Lantern Wattage(PLL or HPS)

ME2 10m 250w or 400w12m 400w

ME3c 8m 100w or 150w10m 150w or 250w

S2 8m 100w or 150wS3 6m 36w, 70wS4 6m 24w, 36w,S7 5m 24w, 36w, 50w

Table 2.4.

Table 2.5 gives the minimum desirable clearances from edge of carriageway to face of thecolumn:

Design speed

Mp/h

30

50

60

70

Clearance

M

0.8

absolute minimum 1.0(recommended minimum 1.5)

Absolute minimum 1.5

Absolute minimum 1.5

Table 2.5



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Development Procedures for Highway Lighting

1 Adoption of Apparatus after 1stApril, 2010

1.1 Where the Developer requests the Authority to accept into the scope of theService Apparatus which is in existence (or will be in existence) as a result of a

new development or scheme after the 1st April, 2010 the following procedure

shall apply:

(a) the Developer shall provide to the Authority written notice stating:

(i) what development or scheme requires Adoption of the

Apparatus;

(ii) the identity of the parties involved;

(iii) a plan of the proposed development or works and details of the

types of relevant Apparatus;

(iv) the lighting classes apply to each item of Apparatus and/or each

road, footpath or cycle track within the proposed development or

works;

(v) details of any special requirements by the Authority in addition to

the Standard Development Specification with which the proposeddevelopment or works must comply;

(vi) a copy of the proposed design of the Apparatus, including:

(A) details of all Apparatus types;

(B) locations of the Apparatus; and

(C) written confirmation by the developer that the design

complies with the adoption required standards;

(vii) details of any cable distribution networks forming part of the

Apparatus and proposed to be taken over by the PFI Service

Provider;

(viii) the electrical test certificates for the Apparatus;

(ix) a copy of the Adoption Required Standards (including the

Standard Development Specification);

(x) written confirmation from the developer that the Apparatus

complies with the Adoption Required Standards;



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(xi) sufficient relevant information to allow the Service Provider to

satisfy any Legislation;

Accrual Required Standards for Highway Lighting

Residential Roads S5 - S6

Lighting columns - 6m straight shaft (no outreach bracket), polymer coated (12B21).Lanterns - WRTL Libra Performer with 24/36W PLL lamp and dimming

ballast HF-R DALI, fitted with Mayflower six-pin NEMA socket,post-top mounted (maximum tilt 5 degrees).

Switch controls - Mayflower Intelligent Management System (MIMS ) remotemonitoring Node to plug into six-pin NEMA socket in eachlantern.

Every lighting scheme is required to install one Mayflower Mobitex GPRS Sub-master

unit to control Nodes and link to central control system.

Residential Distributor Roads S4

Lighting columns - 6m straight shaft (no outreach bracket), polymer coated (12B21).Lanterns - WRTL Libra Performer with 36/55W PLL lamp and dimming

ballast HF-R DALI, or WRTL Arc 80 with 60W Cosmopolislamp and dimming ballast DynaVision DALI Xtreme; fitted withMayflower six-pin NEMA socket, post-top mounted (maximumtilt 5 degrees).


Every lighting scheme is required to install one Mayflower Mobitex GPRS Sub-masterunit to control Nodes and link to central control system.

Main Roads ME5 to ME3a and CE Classes

Lighting columns - 8/10/12m straight shaft (no bracket), polymer coated (12B21).Lanterns - PHILIPS Iridium 253/254 flat glass with 100-250W SON/T or

90-140W Cosmopolis lamp, and dimming ballast DynaVisionDALI Xtreme; fitted with Mayflower six-pin NEMA socket, post-top mounted (maximum tilt 5 degrees).


Every lighting scheme is required to install one Mayflower Mobitex GPRS Sub-master

unit to control Nodes and link to central control system.

Note The S, MEand CELighting Classes appropriate to the various categories of



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Road, are as defined in BS5489-1:2003: Code of practice for the design ofroad lighting. Hampshire County Council will advise the relevant Class(es) on

receipt of scheme details.

Contemporary Lantern Types in addition to Development Standard for Highway

Lighting when appropriate.

Lantern Types:

Philips - Milewide, Philips - Iridium.

WRTL - America, WRTL - Luxor.

DW Windsor Dover

Column Types / Manufacturers:

A straight or tapered column would be appropriate from any of the manufacturers listedbelow.

Mallatite.CU Phosco.Stainton.

Abacus.

Ballasts - all to be electronic and fully dimmable, using DALI protocol.Switch controls - Mayflower Intelligent Management System (MIMS ) remote

monitoring Node in each lantern.


Note The S, MEand CELighting Classes appropriate to the various categories of

Road, are as defined in BS5489-1:2003: Code of practice for the design of road lighting.Hampshire County Council will advise the relevant Class(es) on receipt of scheme details.



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Heritage Lantern Types in addition to Development Standard for HighwayLighting when appropriate.

Lantern Types:

Philips - Paxton, Philips - Drummond, Philips - Buckland, Philips - Claremont.

Metcraft - Cromwell, Metcraft - Drake, Metcraft - Gladstone, Metcraft - Newton,Metcraft - Raleigh, Metcraft - Victoria, Metcraft - Wellington, Metcraft - Winston.

Column Types:

Metcraft Range.

Ballasts - all to be electronic and fully dimmable, using DALI protocol.Switch controls - Mayflower Intelligent Management System (MIMS ) remote

monitoring Node in each lantern.


Note The S, MEand CELighting Classes appropriate to the various categories ofRoad, are as defined in BS5489-1:2003: Code of practice for the design of road lighting.

Hampshire County Council will advise the relevant Class(es) on receipt of scheme details.



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3 Obstructions to Avoid.

Trees

Bushes/hedges

Overhead lines (electrical)

Overhead lines (other)

Vehicular accesses / gateways

Bedroom windows

Of course this list isnt intended to be exhaustive so there may be others that are notmentioned. It should, however, be clearly noted that all columns must be located in theHighway unless a Wayleave or Deed of Grant has been signed by the landowner.

a. Trees.

Trees, both large and small are a constant problem when it comes to installinglighting columns. The following observations must be adhered to by schemedesigners and maintenance operatives when considering column locations:

1. The scheme shall be designed so that columns are sited mid way betweentrees even if the design criteria is exceeded.

2. Where there an alternative location, away from the tree, then utilise thislocation and reconfigure the design accordingly.

3. It may be possible to locate a column underneath the tree canopy but itmust be at least 1m clear above the lantern and the designer must be surethat this space will not be encroached upon at a later date.

4. When locating columns amongst trees lanterns must be clearly visiblewhen standing at the mid point between columns (See Figure 1)

Figure 1 Tree Trimming Detail



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Figure 2 Tree Trimming Flow Chart

b. Bushes/Hedges

Whilst bushes most likely wont block the lantern they will prevent futuremaintenance by blocking the access door. Trimming needs to be carried out on a

regular basis so it is best to move the column away from existing locations wherepossible.

c. Overhead Lines.

Scottish and Southern Energy plc (S&SE) publish guidelines for the placing ofcolumns near LV or HV overhead lines but, in summary, these are:

0.5 times the height of the column for low voltage (insulated)1.5 times the height of the column for low voltage (uninsulated)

2.0 times the height of the column for high voltage wood poles}2.5 times the height of the column for high voltage steel towers}

Columns must not be positioned any closer than these limits. However, whereheight may allow for closer positioning the designer must consult with S&SE andobtain written consent as regards location.

Warning signs should be fitted to columns located underneath any high voltagecables as per HCC Standard Detail HCC9/L/165.

d. Overhead Lines (other)

Wherever possible columns should be positioned to avoid conflict with overheadlines such as BT cables etc. Where such conflict is unavoidable there must be



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sufficient clearance to enable an operative to gain access to the lantern via acherry picker or hoist.

e. Vehicular accesses / gateways

Columns must never be positioned in a manner that blocks access, gateways orany other form of access to property. Normally (but not always) locatingcolumns on property party lines will avoid this. However, in any case, columnsmust not obstruct site lines for vehicles entering onto the highway.

f. Bedroom windows

Light intrusion into properties should be avoided as much as possible.Consideration must be given to possible problems in all cases and, if necessary,the affected residents consulted. Where necessary shielding requirements should

be identified at the site fit stage and fitted as a matter or course. However shieldscannot be installed on columns in excess of 6m mounting height. Wherecolumns in excess of this height are proposed then flat glass lanterns may berequired and angled away from the affected property. Manufacturers lanternbased external front and rear baffles may also be used.

g. Footpaths (narrow & wide)

Where columns are being located on footpaths the choice of column position willdepend on the width of the footpath and any verge area available. In most casesthere will be 3 possible alternatives as shown below:

Eg.1 Column mounted in verge with minimum setback (see Table 2for details)

Column locations

Eg.2. Column mounted at rear of verge



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Column locations

Eg.3. Column mounted at rear of footpath

Column locations



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4 Fold Down (Raising and Lowering or Mid-hinged) Columns

Fold down columns are designed for installation in locations where the lantern andcontrol gear etc cannot be reached by means of a vehicle mounted lift, a ladder, mobile

extending working platform (MEWP) or other recognised safe means. There are,however, considerations that must be taken into account to ensure their effective use.

Because of their design care must be taken to ensure there is sufficient clearance toenable the column to be lowered, and raised again, without obstruction. When in itslowed position the column shaft should not obstruct pedestrians (i.e. it should not haveto lie across a footpath or cycleway). There should be sufficient room for an operative to

work safely away from buildings, steep slopes, traffic routes or bodies of water.

Such columns should not be used as a tool of convenience and should only beemployed where there is no chance of vehicular access and all other reasonable

means of safe access have been eliminated.

5. Column Colours

The required colours for street lighting columns within the County are based on BS

4800 and generally are as follows:-

12 B 21 Lovat Green (Valspar colour name)

00 E 53 Black (Valspar colour name)

6. Checks on Completion

Visual Checklist

The following are visual and electrical inspection checklists which must be completedfor all new sites. This is the same list as used by County Council inspectors and, also, theIndependent Certifier employed under the Street Lighting Private Finance Initiative.


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Visual Inspection Checklist

Item Description of Inspection Tolerances Comme

1 Planting depth Remove door and measure from the

bottom of aperture to finished groundlevel

Manufacturers specification +/-

25mm

Visual an

2 Reinstatement Check quality final reinstatement Visual Does targrass bee

3 Site clearance Check that the site has been left cleanand tidy

None

4 Column / post alignment Is the pole upright and plumb? Spirit level bubble touching line Use spir

5 Bracket alignment Is the bracket installed as designed? Visual

6 Bracket outreach Is the bracket outreach as designed? None

7 Column / bracket protectivesystem

Is colour / finish correct andundamaged?

Minor scratches not through togalvanising

8 Numbering Is unit numbered correctly and incorrect place with logo?

Height +/- 25mm Visual an

9 Location of unit Check for compliance with design +/- 500mm longitudinal

+/- 50mm across

Installatispecifica

10 Lighting column door Check for correct orientation None

11 Locking device Check that the lock operates correctlyand the door fits securely.

None

12 Column root protection Check that correct root protection isevident

None



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Item Description of Inspection Tolerances

13 Lighting column height Check that the height complies with theoutput specification

None

14 Lighting columns Check that where vehicular access isrestricted or where maintenance cannot

be carried out by a purpose built vehiclea raising and lowering column has beenused.

None

15 Position of unit Check that the units have been installedin Authority owned land or that

wayleaves have been obtained.

None

16 Column attachments Check that existing attachments havebeen transferred to new columns andare undamaged.

None

17 Statutory attachments Check that statutory signs are wherethey need to be.

None

18 Sign light attached tolighting column

Check that hole in column has beenadequately sealed to prevent ingress of

water.

None

19 Sign light wiring Check correct cables, sleeving, wiring isneat, insulation at terminals andterminals are tight.

None

20 Lighting column type Suitable for banners, hanging baskets,festive illuminations etc

None

21 Apparatus in Conservationareas

Check that the columns, brackets andLuminaires are suitable for the particular

conservation area.

None



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22 Installations and removals Check compliance with legislation,Method Statements, manufacturersrecommendations, codes of practice andgood industry practice.

None Daytime

23 Statutory Undertakersequipment Check drawings from StatutoryUndertakers have been obtained andhave been used on site

None Daytime pack.

24 Redundant equipmentremoved

Check redundant units have beenremoved and that permanentreinstatement has been carried out.

None

25 Illuminated signs Check the sign face type, post location,orientation and door position.

26 Illuminated bollards Check the shell type, base to the correctdepth and base opens in the correctdirection.

None

27 Electrical test certificate Check that a test certificate is providedand complete

None

28 Electrical test certificate Check instruments are calibrated andreadings noted correctly

None Check quand rando

29 Luminaire alignment Is luminaire straight or twisted? Visual

30 Luminaire bowl clean Is the Luminaire bowl clean and freefrom blemishes

Visual

31 Luminaire optic setting Is the optic setting as per design? None

32 Correct lamp, Luminaire andgear

Check that the correct lamp, gear andLuminaire are as per the design

None

33 Switching device Is the correct switching device fittedand set?

None

34 Internal wiring Check the correct cable has been used,wiring is neat, insulation at terminals ismaintained and that all terminations andearth bonds are tight. Check that all

None



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electrical equipment is securely attachedto the backboard.

35 Double pole isolation Check if double pole isolation has beeninstalled

None

36 Protection device Check that the protection device iscorrectly installed and rated.

None

37 Private supply cables Check that private supply cables arecorrectly sized, glanded and identified asto what they feed.

None

38 Feeder pillars / locations Check for condensation, distributionboard, rating of protection devices,

wiring is neat, all terminations, glanding,insulation, cables sizes, cables areidentified, earthing and schematic cablediagram.

None

39 Lighting design Check that the correct lighting designcategory for the road / path has beenselected.

None

40 Lighting design Check design for compliance withBritish standards.

None

41 Lighting design Check that the min and max spacingshave been complied with

None Visual anrequired.

42 Lighting design -obstructions

Check obstructions that will adverselyaffect lighting levels have been takenaccount of.

None

43 Lighting design trees and

other vegetation

Check that the effect of trees and other

vegetation has been adequatelyaccommodated in the design andpositioning of the columns.

None

44 Lighting design Check lamp lumen output andmaintenance factors used in lightingcalculations.

None



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45 General - NRSWA Check that NRSWA notices have beenissued and closed and that there are nooutstanding inspection defaults.

None Check inf

46 General - Power Check that there is electrical power atthe secondary isolation point.

None Use a test

47 General Lamp operation Check that the lamp strikes. None

48 General - Condition Check for any signs of damage to anyitem of apparatus.

None

49 General - Operatives Check operatives carrying outinstallation works are suitably trainedand qualified to carry out the works,including excavating, trafficmanagement, operating plant, andequipment. Check electricians are Cityand Guilds qualified.

None Check traoperative

visits.

50 General - MIS Check that the Management

Information has been updatedaccurately.

None

51 General - Reporting Provide a monthly report detailing thenumber of units inspected in the month,together with the numbers that havepassed or failed the inspection in themonth and a running total of thenumber of items certified.

52 General - Reporting Issue Certificates of Compliance andNon-compliance and identify snaggingitems as necessary and in accordance

with the output specification.

None



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Standard Development Specification - Street Lighting Design Guide 08/07/2010Page 25 of 26


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Street Lighting Design Guide 4th Edition

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