Street Lighting Design Guide - HantsStreet Lighting Design Guide . ... Standard Development...

Environment Department Street Lighting Section

Street Lighting Design Guide

4th Edition

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


Contents Page Introduction 3 Design Guidance 3-9 Obstructions to Avoid 10 Trees 10 Bushes and Hedges 11 Overhead Lines 11-12 Vehicle Accesses/gateways 12 Bedroom Windows 12 Footpaths 12-13 Fold Down (Raising and Lowering or Mid-hinged) columns 14 Column Colours 14 Checks on Completion 14- Visual Checklist 15-19 Electrical Checklist 20 Inventory 21-22




1. Introduction

This is the forth edition of the Street Lighting Design Guide (formally entitled “Guidelines for Siting and Design of Illuminated Street Furniture in the Public Highway”. The document is the 2nd in a suite of documents consisting of :

The Street Lighting Policy Document (4th revision) 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 from local residents. This guide has been produced in order to overcome some of these general issues where they 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 it’s own unique set of circumstances which will dictate the final scheme design. 2. Design Guidance. General guidance on whether lighting should, or should not, be installed can be found in the Street Lighting Policy Document. Tables 2.1 – 2.3, below, indicate the lighting levels to be achieved in Zones E2-4.


Environmental Zones, E1 to E4 Lighting classes

Classes determined by CEN/TR13201-1:2004, BSEN13201-2-4:2003, BS5489-1:2003

E1 - Intrinsically Dark, e.g. National Parks & E2 - Low District Brightness e.g. Rural or Small Villages

Type of Road Lighting class Minimum Ra Value

Part-Night dimming in

K.Lumens % reduction

Column Height (max)

Maximum Bracket length

(metres)/Luminaire inclination (degrees)

A35 Redbridge Causeway/Totton By Pass high mast lighting scheme – traffic flow >15,000 Me2 20 25 25m 0/0

Strategic Route (‘A’ & All Dual Carriageways) – traffic flow >15,000 ME3a 20 25 10m 0.5/0

Main Distributor (Other ‘A’) – traffic flow >15,000 ME3a 20 25 10m 0.5/0

Secondary Distributor (‘B’ & ‘C’ Class) ME3b 20 25 8m 0.5/0

Road linking main and secondary roads ME5 20 25 6m 0/0

Subsidiary Roads – high crime & high traffic flow S6 60 25 6m 0/0

Subsidiary Roads – high crime & normal traffic flow S6 60 25 6m 0/0

Subsidiary Roads – high crime & low traffic flow S6 60 25 6m 0/0

Footpaths/ Cycle paths – high crime S6 60 25 6m 0/0

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


Village Centres CE4 60 25 6m 0/0

All low crime roads and Un-adopted- Parish/District Lighting S7 80 25 5m 0/0



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




Column Height (max)

Maximum Bracket length

(metres)/Luminaire inclination (degrees)

Strategic Route (‘A’ & All Dual Carriageways) – traffic flow>15,000 ME2 20 25 12m 0.5/5

Main Distributor (Other ‘A’) – traffic flow <15,000 ME3a 20 25 10m 0.5/5

Secondary Distributor (‘B’ & ‘C’ Class) ME3b 20 25 10m 0.5/5

Link roads, generally ‘C’ roads ME3c/S2 20 25 8m 0.5/5

Subsidiary Roads – high crime & high traffic flow S3 60 25 8m 0.5/5



Footpaths/ Cycle paths –high crime S6 60 25 6m 0/5

Village Centres CE2 60 25 8m 0.5/5

All Low Crime Roads and Un-adopted Parish/District Lighting S7 80 25 6m 0/5



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




Column Height (max)

Bracket/Luminaire inclination %

Strategic Route (‘A’ & All Dual Carriageways) – traffic flow>15,000 ME2 20 25 12 to 30m 0.5/5

Main Distributor (Other ‘A’) – traffic flow <15,000 ME3a 20 25 10m 0.5/5

Secondary Distributor (‘B’ & ‘C’ Class) ME3c 20 25 10m 0.5/5

Link Roads generally ‘C’ Class ME3c/S1 20 25 10m 0.5/5

Subsidiary Roads – high crime & high traffic flow S2 60 25 8m 0.5/5



Footway/Cycleway – high crime S4 60 25 6m 0/5

City/Town Centre CE1 60 25 10m 0.5/5

Subways shall lit utilising a light source with a Ra>=80 Day Eave Day Emin Night Eave Night Emin

350 150 100 50

Basingstoke Churchill Way Underpass As set out in Appendix 4




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 the maximum depth of 50mm between

the 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 the maximum depth of 82mm between

the 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 Crossing Patrol Warning Signs, Variable

Message Signs, Illuminated Pedestrian Refuge Beacons, Illuminated Traffic Signs and Illuminated Traffic Bollards; and (iii) similarly switched off and on at specific times during the night. The dimming facility must be capable of being provided by all

electronic 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 specified. 7 All industrial estates will be lit utilising columns heights of 8m or above and have a minimum lighting level of S3. 8 For the avoidance of doubt, where an Ra value of greater than Ra60 is specified for S class lighting category the tables above have already

taken into account any reduction in lighting class and the Designer shall design to the lighting class as set out in the table, 9 Remote Monitoring and Management Systems (RMMS) shall not be fitted to any item of Apparatus which has a metered supply. 10 All lighting classes, where dimmed, shall be dimmed from midnight to dawn unless instructed by the Authority otherwise. 11 Should RMMS not be installed the dimmable Control Gear shall be capable of being re-programmable on site to any of the configurations as

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

Table 2.3


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

BS Category Mounting Height Lantern Wattage (PLL or HPS)

ME2 10m 250w or 400w 12m 400w

ME3c 8m 100w or 150w 10m 150w or 250w

S2 8m 100w or 150w S3 6m 36w, 70w S4 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 the column:

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



Development Procedures for Highway Lighting 1 Adoption of Apparatus after 1st April, 2010

1.1 Where the Developer requests the Authority to accept into the scope of the Service 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 proposed development 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;



(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 ) remote monitoring Node to plug into six-pin NEMA socket in each lantern.

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 Cosmopolis lamp and dimming ballast DynaVision DALI 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. 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 DynaVision DALI 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, ME and CE Lighting 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. 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 listed below. 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. 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, ME and CE Lighting 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.



Heritage Lantern Types in addition to Development Standard for Highway Lighting 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. 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, ME and CE Lighting 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.



3 Obstructions to Avoid.

• Trees • Bushes/hedges • Overhead lines (electrical) • Overhead lines (other) • Vehicular accesses / gateways • Bedroom windows

Of course this list isn’t intended to be exhaustive so there may be others that are not mentioned. It should, however, be clearly noted that all columns must be located in the Highway 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 installing lighting columns. The following observations must be adhered to by scheme designers and maintenance operatives when considering column locations:

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

2. Where there an alternative location, away from the tree, then utilise this

location and reconfigure the design accordingly.

3. It may be possible to locate a column underneath the tree canopy but it

must be at least 1m clear above the lantern and the designer must be sure that this space will not be encroached upon at a later date.

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

Figure 1 – Tree Trimming Detail



Figure 2 – Tree Trimming Flow Chart

b. Bushes/Hedges

Whilst bushes most likely won’t block the lantern they will prevent future maintenance 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 where possible.

c. Overhead Lines.

Scottish and Southern Energy plc (S&SE) publish guidelines for the placing of columns 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, where height may allow for closer positioning the designer must consult with S&SE and obtain written consent as regards location. Warning signs should be fitted to columns located underneath any high voltage cables as per HCC Standard Detail HCC9/L/165.

d. Overhead Lines (other)

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



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

e. Vehicular accesses / gateways

Columns must never be positioned in a manner that blocks access, gateways or any other form of access to property. Normally (but not always) locating columns on property party lines will avoid this. However, in any case, columns must 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 shields cannot be installed on columns in excess of 6m mounting height. Where columns in excess of this height are proposed then flat glass lanterns may be required and angled away from the affected property. Manufacturers lantern based 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 will depend on the width of the footpath and any verge area available. In most cases there will be 3 possible alternatives as shown below: Eg.1 Column mounted in verge with minimum setback (see Table 2 for details)

Column locations

Eg.2. Column mounted at rear of verge



Column locations

Eg.3. Column mounted at rear of footpath

Column locations




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

Fold down columns are designed for installation in locations where the lantern and control 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 to enable the column to be lowered, and raised again, without obstruction. When in its’ lowed position the column shaft should not obstruct pedestrians (i.e. it should not have to 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 be employed 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 completed for all new sites. This is the same list as used by County Council inspectors and, also, the Independent Certifier employed under the Street Lighting Private Finance Initiative.


Visual Inspection Checklist Item Description of Inspection Tolerances Comments

1 Planting depth Remove door and measure from the bottom of aperture to finished ground level

Manufacturers specification +/- 25mm

Visual and tape measure

2 Reinstatement Check quality final reinstatement Visual Does tarmac have straight edge? Have blocks or grass been cut neatly and laid level?

3 Site clearance Check that the site has been left clean and tidy

None

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

5 Bracket alignment Is the bracket installed as designed? Visual

6 Bracket outreach Is the bracket outreach as designed? None

7 Column / bracket protective system

Is colour / finish correct and undamaged?

Minor scratches not through to galvanising

8 Numbering Is unit numbered correctly and in correct place with logo?

Height +/- 25mm Visual and tape measure

9 Location of unit Check for compliance with design +/- 500mm longitudinal +/- 50mm across

Installation must still comply with output specification

10 Lighting column door Check for correct orientation None

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

None

12 Column root protection Check that correct root protection is evident

None



Item Description of Inspection Tolerances Comments

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

None

14 Lighting columns Check that where vehicular access is restricted or where maintenance cannot be carried out by a purpose built vehicle a raising and lowering column has been used.

None

15 Position of unit Check that the units have been installed in Authority owned land or that wayleaves have been obtained.

None

16 Column attachments Check that existing attachments have been transferred to new columns and are undamaged.

None

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

None

18 Sign light attached to lighting column

Check that hole in column has been adequately sealed to prevent ingress of water.

None

19 Sign light wiring Check correct cables, sleeving, wiring is neat, insulation at terminals and terminals are tight.

None

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

None

21 Apparatus in Conservation areas

Check that the columns, brackets and Luminaires are suitable for the particular conservation area.

None




22 Installations and removals Check compliance with legislation, Method Statements, manufacturers recommendations, codes of practice and good industry practice.

None Daytime on site observations

23 Statutory Undertakers equipment

Check drawings from Statutory Undertakers have been obtained and have been used on site

None Daytime on site observations, check scheme design pack.

24 Redundant equipment removed

Check redundant units have been removed and that permanent reinstatement 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 correct depth and base opens in the correct direction.

None

27 Electrical test certificate Check that a test certificate is provided and complete

None

28 Electrical test certificate Check instruments are calibrated and readings noted correctly

None Check quality procedures, certificates of calibration and random daytime observations

29 Luminaire alignment Is luminaire straight or twisted? Visual 30 Luminaire bowl clean Is the Luminaire bowl clean and free

from blemishes Visual

31 Luminaire optic setting Is the optic setting as per design? None 32 Correct lamp, Luminaire and

gear Check that the correct lamp, gear and Luminaire are as per the design

None

33 Switching device Is the correct switching device fitted and set?

None

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

None




electrical equipment is securely attached to the backboard.

35 Double pole isolation Check if double pole isolation has been installed

None

36 Protection device Check that the protection device is correctly installed and rated.

None

37 Private supply cables Check that private supply cables are correctly sized, glanded and identified as to what they feed.

None

38 Feeder pillars / locations Check for condensation, distribution board, rating of protection devices, wiring is neat, all terminations, glanding, insulation, cables sizes, cables are identified, earthing and schematic cable diagram.

None

39 Lighting design Check that the correct lighting design category for the road / path has been selected.

None

40 Lighting design Check design for compliance with British standards.

None

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

None Visual and measure on site with measuring wheel if required.

42 Lighting design - obstructions

Check obstructions that will adversely affect lighting levels have been taken account of.

None

43 Lighting design – trees and other vegetation

Check that the effect of trees and other vegetation has been adequately accommodated in the design and positioning of the columns.

None

44 Lighting design Check lamp lumen output and maintenance factors used in lighting calculations.

None




45 General - NRSWA Check that NRSWA notices have been issued and closed and that there are no outstanding inspection defaults.

None Check information provided by the Authority

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

None Use a test instrument

47 General – Lamp operation Check that the lamp strikes. None 48 General - Condition Check for any signs of damage to any

item of apparatus. None

49 General - Operatives Check operatives carrying out installation works are suitably trained and qualified to carry out the works, including excavating, traffic management, operating plant, and equipment. Check electricians are City and Guilds qualified.

None Check training records and tickets. Identify operatives from work sheets and from random site visits.

50 General - MIS Check that the Management Information has been updated accurately.

None

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

52 General - Reporting Issue Certificates of Compliance and Non-compliance and identify snagging items as necessary and in accordance with the output specification.

None


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