lighting design and assessment for proposed industrial … · undertake a lighting design and...

Martin

Environmental

Solutions

Martin Environmental Solutions April 2019

[email protected] 1

www.m-e-solutions.co.uk Report No: 1575-2

MES

Lighting Design and Assessment for Proposed industrial development on land at, Myserscough Smithy Road, Mellor Brook, Preston,

Prepared for:

PWA Planning, 2 Lockside Office Park, Lockside Road, Preston, PR2 2YS April 2019

mailto:[email protected]

http://www.m-e-solutions.co.uk/

Martin

Environmental

Solutions


[email protected] 2


MES

Contents 1. Introduction .................................................................................................................................... 3

Site Location and Context ................................................................................................................... 3

2. Standards and Guidance. ................................................................................................................ 4

3. Lighting Design ................................................................................................................................ 5

4. Light Overspill ................................................................................................................................. 6

5. Conclusions ..................................................................................................................................... 7

Figure 1 – Aerial Photograph .................................................................................................................. 8

Appendix 1 – Lighting design .................................................................................................................. 9



Martin

Environmental

Solutions


[email protected] 3


MES

1. Introduction

1.1. Martin Environmental Solutions has been commissioned by PWA Planning to

undertake a lighting design and impact assessment in support of a planning application

for a proposed commercial development off the A59 at Myserscough Smithy Road,

Preston.

1.2. This report is a revised version following design changes on site.

Site Location and Context 1.3. The development site is located on the south of the A59 and west/north of

Myserscough Smithy Road. Currently overgrown open land a new entrance is to be

created as part of the development.

1.4. To the west of the site is industrial including BAE Samlesbury, the A59 lies to the north

and beyond agricultural land. To the east and stretching south is the village of Mellor

Brook. An aerial photograph is included in Figure 1.



Martin

Environmental

Solutions


[email protected] 4


MES

2. Standards and Guidance.

2.1 In designing any lighting scheme, it is essential to ensure that the scheme provides

sufficient and safe levels of lighting while keeping obtrusive light to the minimum.

Obtrusive light includes not only light over spill from the site in question but light which

is deflected upwards in to the night sky.

2.2 There exists a number of standards which provide guidelines to the ideal lighting

conditions for traffic routes in a variety of locations.

2.3 BS 5489-1:2013 states in Table 5 that medium traffic areas e.g. parking areas for

shops & offices should have an average lighting level of 10 lux.

2.4 BS EN 1320-2 also details a number of lighting classes based on the intended use of

the area and the locality. S classes deal with the road lighting of minor roads, where

traffic speed and density are low and the predominant users are slow moving vehicles

& pedestrians. To determine the correct sub category of S class a consideration of the

surrounding environment is required, based on the Institute of Lighting Engineers

Environmental zones. For this project a 'S' class of S5 is recommended equating to an

average of 3 lux across the traffic area.

2.5 The National Planning Policy Framework (NPPF) states that developments should

prevent both new and existing development from contributing to or being put at

unacceptable risk from, or being adversely affected by unacceptable levels of soil, air,

water or noise pollution or land instability. It also states that pollution includes light

(Page 55)

2.6 The NPPF continues by stating planning policies and decisions should limit the impact

of light pollution from artificial light on local amenity, intrinsically dark landscapes and

nature conservation.



Martin

Environmental

Solutions


[email protected] 5


MES

3. Lighting Design

3.1 The following lighting proposal and calculations have been produced to ensure a

suitable level of lighting is provided over the site while minimising the overspill light and

the effect on nearby properties. Philips’ ‘Calculux’ design software has been used to

prepare the lighting design and is included in Appendix 1.

3.2 To achieve this design a total of 5 luminaires have been used, set on 7m high masts

around the road way and parking area. This results in an average lighting level of 10.5

lux over the road way and 5.9 lux over the site.

3.3 In order to ensure that the vision of passers-by is not affected by glare from the lights

the angle of elevation of the individual luminaires – i.e. the angle between the vertical

and the line of peak output of the luminaires, also referred to as Tilt90 all luminaires

below 360 with an upward overspill light of 0.02% The ‘Guidance Notes for the

Reduction of Obtrusive Light GN01:2011’ specifies less than 2.5%. This parameter has

the added benefit of reducing the visibility of the luminaires from outside the site.

3.4 The design has been built around the Philips Selenium LED BGP340 1xLED37-3S/740

DM luminaires (fitted to the poles). These are part of the Philips current design of road

& architectural luminaires.

3.5 The Philips specified luminaires are among a number of high quality, low glare, low

spill luminaires available. Other manufacturers, including Abacus, Franz Sill, Siemans

and Thorn, offer luminaires which will give similar performance.



Martin

Environmental

Solutions


[email protected] 6


MES

4. Light Overspill

4.1 An overspill plot has been prepared for the design. This is included within Appendix 1,

Section 3 of this report. The drawing and table shows predicted light levels over an

area surrounding the site, which includes the adjacent A59, and nearby housing.

4.2 It is sometimes the case that lighting solutions cause nuisance not because of the

lighting overspill but as a result of glare or of the brightness of the lights when seen

directly, this is known as the source intensity. Predictions of source intensity have been

made for observer’s positions along the public Highway and for the nearby residential

properties. For each of these calculations, the reported figure is the maximum source

intensity to be seen by looking at any of the site luminaires. The results are to be

compared with the limits recommended by the ILE.

4.3 The site is considered to correspond to Environmental Zone type E2, defined as ‘Low

district brightness areas; Rural, small village, or relatively dark urban locations’ due

primarily rural nature of the area. For such an area ILE recommends the following

limits:

Maximum Upward Light Output Ratio ≤ 2.5%

Source Intensity ≤5 Kcd

4.4 For the luminaires on which the design has been based, at the aiming angles

employed, the Upward Light Output Ration is 0.02% while the maximum source

intensity is 1.9Kcd.



Martin

Environmental

Solutions


[email protected] 7


MES

5. Conclusions

5.1 The purpose of the assessment was to design a lighting scheme for the proposed site

which provided sufficient luminance over the site for safe activities to be carried out

while minimising the impact on neighbouring land uses, including the public highway.

5.2 The calculations have not taken into account the existing ambient light, however in

order to be obtrusive, the overspill light from the site would have to be greater than the

existing sources of light in the area. There is currently road lighting provided to the

length of the highway outside the proposed site and on the same side, which would

result in a higher lux level along the roadway.

5.3 The lighting design therefore ensures the obtrusive light from the site will not have an

adversely impact on adjacent land use as required by the National Planning Policy

Framework.



Martin

Environmental

Solutions


[email protected] 8


MES

Figure 1 – Aerial Photograph



Martin

Environmental

Solutions


[email protected] 9


MES

Appendix 1 – Lighting design



Martin

Environmental

Solutions


[email protected] 10


MES



Martin

Environmental

Solutions




MES



lighting design and assessment for proposed industrial … · undertake a lighting design and...

Documents