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Malcolm Hollis LLP The Lexicon, 10-12 Mount Street, Manchester M2 5NT T 0161 832 7031 F 0161 828 0500 W malcolmhollis.com Malcolm Hollis LLP, a Limited Liability Partnership. Registered in England and Wales number OC314362. Registered office: 5 Brooks Court, Kirtling Street, London SW8 5BP. VAT number 863 8914 80. A list of members is available from our registered office. Daylight and Sunlight Report for the Proposed Development at Jesmond Towers, Jesmond Dene Road, Newcastle Prepared for Shepherd Offshore Limited Daylight and Sunlight Report for the Proposed Development at Jesmond Towers, Jesmond Dene Road, Newcastle Prepared for Shepherd Offshore Limited Prepared by Sam Wallis BSc (Hons) MRICS Date 24 May 2012 Reference 30846/IM/SBW

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Page 1: Daylight and Sunlight Report for the Proposed · PDF fileLayout Planning for Daylight and Sunlight – A Guide to Good Practice’ 2 nd ... 2.4.3 A site inspection was also undertaken

Malcolm Hollis LLP The Lexicon, 10-12 Mount Street, Manchester M2 5NT

T 0161 832 7031 F 0161 828 0500 W malcolmhollis.com Malcolm Hollis LLP, a Limited Liability Partnership. Registered in England and Wales number OC314362. Registered office: 5 Brooks Court, Kirtling Street, London SW8 5BP. VAT number 863 8914 80. A list of members is available from our registered office.

Daylight and Sunlight Report for the

Proposed Development at Jesmond Towers,

Jesmond Dene Road, Newcastle

Prepared for

Shepherd Offshore Limited

Daylight and Sunlight Report for the Proposed

Development at Jesmond Towers, Jesmond Dene

Road, Newcastle

Prepared for Shepherd Offshore Limited Prepared by Sam Wallis BSc (Hons) MRICS Date 24 May 2012 Reference 30846/IM/SBW

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Daylight and Sunlight Report for the Proposed Development at 1 Ref. 30846/IM/SBW Jesmond Towers, Jesmond Dene Road, Newcastle 24 May 2012

Contents Page

1. Executive Summary....................................................................................................................... 2

1.1 Scope .................................................................................................................................... 2

1.2 Assessment Criteria .............................................................................................................. 2

1.3 Summary of Effect of the Proposed Development on Existing Surrounding Buildings .... 2

1.4 Summary of Analysis of Daylight, Sunlight and Overshadowing for the New Development ................................................................................................................................ 2

1.5 Overall ................................................................................................................................... 3

2. Introduction ................................................................................................................................... 4

2.1 Scope .................................................................................................................................... 4

2.2 Planning Policy ..................................................................................................................... 4

2.3 Assessment Criteria .............................................................................................................. 5

2.4 Limitations ............................................................................................................................. 5

3. Assessment & Results – Impact of New Development on Existing, Surrounding Buildings ....... 7

3.1 Daylight ................................................................................................................................. 7

3.2 Sunlight .................................................................................................................................. 7

4. Assessment & Results – Daylighting, Sunlighting & Overshadowing issues in the New Development ......................................................................................................................................... 9

4.1 Internal Daylight ................................................................................................................... 9

4.2 Internal Sunlight .................................................................................................................. 10

Appendix A Tests to be Applied Appendix B Context Drawings Appendix C Window/Room Reference Drawings Appendix D Daylight Study Appendix E Sunlight Study

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Daylight and Sunlight Report for the Proposed Development at 2 Ref. 30846/IM/SBW Jesmond Towers, Jesmond Dene Road, Newcastle 24 May 2012

1. Executive Summary

1.1 Scope

1.1.1 We have been instructed by Nathaniel Lichfield & Partners on behalf of Shepherd Offshore Limited to determine the impact upon the daylight and sunlight amenity of the existing surrounding buildings to the western boundary, which may arise from the proposed development at Jesmond Towers, Jesmond Dene Road, Newcastle. We have also undertaken a sample of internal daylight and sunlight tests to determine whether the proposed buildings will receive sufficient daylight and sunlight.

1.2 Assessment Criteria

1.2.1 To ensure that this assessment can be appropriately evaluated against Newcastle City Council’s planning policy, daylight and sunlight calculations have been undertaken in accordance with the Building Research Establishment Report ‘Site Layout Planning for Daylight and Sunlight – A Guide to Good Practice’ 2nd Edition, 2011(the “BRE guide”) and also British Standard 8206 – 2: 2008 – ‘Lighting for Buildings – Part 2: Code of Practice for Daylighting’, to which the BRE guide refers. The standards and tests applied within this assessment are briefly described in Appendix A.

1.3 Summary of Effect of the Proposed Development on Existing Surrounding

Buildings

1.3.1 Daylight

The two existing windows in the retained structure, Plot 9, West Lodge, were tested using the VSC method and these will continue to meet the target values.

1.3.2 Sunlight

All of the rooms tested to Plot 9 will continue to meet the values set out in the BRE guidance.

1.4 Summary of Analysis of Daylight, Sunlight and Overshadowing for the New

Development

1.4.1 Internal Daylight

1.4.2 Of the 31 rooms tested for ADF, all will meet the target values as set out in the BRE guidelines. Of the 6 rooms tested for daylight distribution, 3 rooms will fall short of the BRE target value. The values are only marginally short of the BRE target however, all of the rooms are bedrooms, which have a lesser requirement for daylight.

1.4.3 Internal Sunlight

1.4.4 Of the 16 rooms assessed, 14 will meet the BRE target values with 2 falling marginally short. The BRE guidelines relate to living rooms, and one of the rooms that fails to meet the target value is a kitchen. The other room that will not meet the criteria does not face within 90o of due south, and so cannot not have a reasonable expectation for direct sunlight.

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1.5 Overall

1.5.1 In general, the results of the analysis are favorable, and in our view, appropriate design consideration has been given to the protection of residential amenity for both existing surrounding buildings and the development itself.

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Daylight and Sunlight Report for the Proposed Development at 4 Ref. 30846/IM/SBW Jesmond Towers, Jesmond Dene Road, Newcastle 24 May 2012

2. Introduction

2.1 Scope

2.1.1 We have been instructed by Nathaniel Lichfield & Partners on behalf of Shepherd Offshore Limited to determine the impact upon the daylight and sunlight amenity of the existing surrounding buildings to the western boundary, which may arise from the proposed development at Jesmond Towers, Jesmond Dene Road, Newcastle. We have also undertaken a sample of internal daylight and sunlight tests to determine whether the proposed buildings will receive sufficient daylight and sunlight.

2.2 Planning Policy

2.2.1 Although no standards have been formally adopted within Newcastle City Council’s Unitary Development Plan (UDP) is accepted that daylight and sunlight amenity needs to be reviewed objectively. This Report is therefore based on the following standards, which are the accepted standards for assessing daylight and sunlight:

• Building Research Establishment (BRE) Report “Site Layout Planning for Daylight and Sunlight – a guide to good practice, 2nd Edition, 2011” (“the BRE guide”)

• BS8206 – Part 2: 2008 Code of Practice for Daylighting

2.2.2 Newcastle City Council’s UDP adopted on January 1998 contains the following policy guidance under the Population and Housing section:

2.2.3 Protection of residential amenity

H2 DEVELOPMENT WHICH WOULD HARM THE AMENITY OF ANY DWELLING, OR GROUP OF DWELLINGS WILL NOT BE ALLOWED. IMPACT ON RESIDENTIAL AMENITY WILL BE ASSESSED WITH PARTICULAR REGARD TO:

A. PROTECTING THE CHARACTER OF THE LOCALITY AND OF THE EXISTING BUILDING IN THE CASE OF ALTERATIONS, EXTENSIONS OR CONVERSIONS;

B. PROTECTING TREES AND OTHER SOFT LANDSCAPING OF AMENITY VALUE;

C. ENSURING SATISFACTORY DAYLIGHT, SUNLIGHT, OUTLOOK AND PRIVACY FOR ALL DWELLINGS, EXISTING AND PROPOSED, PARTICULARLY IN RELATION TO GOOD EXISTING STANDARDS IN THE LOCALITY;

2.2.4 New housing design

H4 A HIGH QUALITY OF DESIGN AND LANDSCAPING WILL BE REQUIRED IN ALL HOUSING DEVELOPMENT. PARTICULAR ATTENTION WILL BE PAID TO:

A. THE CHARACTER AND QUALITY OF THE LOCAL ENVIRONMENT;

B. GOOD STANDARDS OF OUTLOOK, NATURAL LIGHT AND PRIVACY IN ALL DWELLINGS;

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2.3 Assessment Criteria

2.3.1 To ensure that this assessment can be appropriately evaluated against Newcastle City Council’s planning policy, daylight and sunlight calculations have been undertaken in accordance with the ‘BRE guide’ and also on BS8206–2: 2008 to which the BRE guide refers. The standards and tests applied are briefly described in Appendix A.

2.3.2 At the specific request of Newcastle City Council, we have assessed the potential impact of the proposed development on the residential buildings to the west of the site i.e. 23 – 37 Crossway.

2.3.3 The existing West Lodge, shown on the Site Plan (see below), that is to be retained to the proposed development site has also been included in the assessment.

2.4 Limitations

2.4.1 We refer you to our daylighting and sunlighting limitations, as provided with our fee proposal.

2.4.2 Our assessment is based on the scheme drawings provided by P+HS Architects as listed below:

Drawing Number Rev Title

- - Planning Discussions_Jan 2012 - 3D model

1948-P-00-1004 - Proposed Levels Plan

1948 P 00 2000 - Housetype 1 Plans Elevations

1948 P 00 2002 - Housetype 2 Plans Elevations

1948 P 00 2003 - Housetype 3 Plans Elevations

1948 P 00 2004 - Housetype 4 Plans Elevations

1948 P 00 2006 - RevD - Housetype 5 Elevations

1948 P 00 2008 2009 2016 - MB Apartment Plans Elevations

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1948 P 00 2010 - Apartment Types 5-9 Plans

1948 P 00 2012 2013 - Apartment Types 10-15 Plans

1948 P 00 2014 D Apartment Types 10-15 Elevations

1948 P 00 1006 - Topographical Survey

2.4.3 A site inspection was also undertaken to record the location of windows within the existing surrounding buildings. Where no elevation survey data has been provided to us, we have estimated approximate window heights and positions in the surrounding existing properties from data gathered at our site inspection.

2.4.4 In some areas external access was not available, primarily to view the full extent of ground floor windows to the rear elevations of houses on Crossway, due to high level boundary walls and fences to the rear gardens.

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Daylight and Sunlight Report for the Proposed Development at 7 Ref. 30846/IM/SBW Jesmond Towers, Jesmond Dene Road, Newcastle 24 May 2012

3. Assessment & Results – Impact of New Development on

Existing, Surrounding Buildings

3.1 Daylight

3.1.1 At the specific request of Newcastle City Council, we have only assessed the potential impact of the proposed development on the residential buildings to the west of the site i.e. 23 – 37 Crossway. In accordance with the BRE guide (see also Appendix A) and our site inspection, the West Lodge, which is to be retained on the development site, also required assessment.

3.1.2 Where the new development subtends to an angle of less than 250 to the centre of the lowest window of an existing neighbouring building, it is unlikely to have a substantial effect on the diffuse skylight enjoyed by the existing building. Equally, the new development itself is also likely to have the potential for good daylighting.

3.1.3 The windows to 23 – 37 Crossway are at such a distance from the proposed development as to pass the ‘25 degree’ tests (see Appendix A for more detail) and therefore, pursuant to the BRE guide, do not require testing for daylight or sunlight availability. See Appendix D for images.

3.1.4 The results of our VSC analysis are shown in full in Appendix D. The following table is a summary of our findings:

Property Ref

Vertical Sky Component Test

No. of Windows

Tested

No. of Windows Passed VSC

Test

No. of Windows

Failed VSC

Test

Plot 9 - West Lodge 2 2 0

Total 2 2 0

3.1.5 Of the 2 windows tested all will continue to meet the target values as set out in the BRE guidelines.

3.2 Sunlight

3.2.1 In accordance with the BRE Guide, our analysis of the plans provided and our observations on site, the West Lodge required Annual Probable Sunlight Hours (APSH) testing – (see Appendix A):

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Daylight and Sunlight Report for the Proposed Development at 8 Ref. 30846/IM/SBW Jesmond Towers, Jesmond Dene Road, Newcastle 24 May 2012

3.2.2 The table below shows a summary of the results of the APSH testing. Full test results are contained in Appendix E.

Property Ref No. of Rooms

Tested

No. of Rooms Passed APSH

Test

No. of Rooms Failed APSH

Test

Plot 9 - West Lodge 2 2 0

Total 2 2 0

3.2.3 Of the 2 rooms tested all will continue to meet the target values as set out in the BRE guidelines.

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Daylight and Sunlight Report for the Proposed Development at 9 Ref. 30846/IM/SBW Jesmond Towers, Jesmond Dene Road, Newcastle 24 May 2012

4. Assessment & Results – Daylighting, Sunlighting &

Overshadowing issues in the New Development

4.1 Internal Daylight

4.1.1 ADF tests have been undertaken to a sample of the principal habitable rooms within the proposed development. The full ADF test results are shown in full in Appendix D. Below is a summary of our findings:

Property Ref

Average Daylight Factor (ADF) Test

No. of Rooms No. of Rooms Passed

No. of Rooms Failed

Plot 8 4 4 0

Plots 10-18 8 8 0

Plot 19 2 2 0

Plot 20 2 2 0

Plots 21-25 - North Jesmond House 6 6 0

Plot 26 - Laundry Building 3 3 0

Plots 27-42 6 6 0

Total 31 31 0

4.1.2 Of the 31 rooms tested all will meet the ADF target values as set out in the BRE guidelines.

4.1.3 The Daylight Distribution (DD) test results are shown in full in Appendix D. Below is a summary of our findings:

Property Ref

Daylight Distribution Test

No. of Rooms No. of Rooms

Passed

No. of Rooms

Failed

Plot 8 4 4 0

Plots 10-18 8 8 0

Plot 19 2 2 0

Plot 20 2 2 0

Plots 21-25 - North Jesmond House

6 5 1

Plot 26 - Laundry Building 3 3 0

Plots 27-42 6 3 3

Total 31 27 4

4.1.4 Although the results indicate that the majority of the rooms to the proposed development will receive adequate daylight distribution as defined by the BRE guidance a number failed to meet the requirements.

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Daylight and Sunlight Report for the Proposed Development at 10 Ref. 30846/IM/SBW Jesmond Towers, Jesmond Dene Road, Newcastle 24 May 2012

4.1.5 A single room to North Jesmond House falls only marginally short of the target value, with 74% of the room receiving daylight, against a target value of 80%. Furthermore, this room is proposed for use as a bedroom, which has a lesser requirement for daylight.

4.1.6 3 rooms will fall short of the BRE target value for daylight distribution to Plots 27-42. The values are only marginally short of the BRE target, and all rooms are bedrooms.

4.1.7 Given the use of these rooms, and the marginal nature of the failures, these results are not thought to be significant.

4.2 Internal Sunlight

4.2.1 APSH tests have been undertaken to a sample of the principal habitable rooms within the proposed development. The full APSH test results are shown in full in Appendix E. Below is a summary of our findings:

Property Ref No. of Rooms

Tested

No. of Rooms

Passed APSH Test

No. of Rooms

Failed APSH Test

Plot 8 2 2 0

Plots 10-18 4 4 0

Plot 19 2 2 0

Plot 20 2 2 0

Plots 21-25 - North Jesmond House

3 2 1

Plot 26 - Laundry Building

2 1 1

Plots 27-42 1 1 0

Total 16 14 2

4.2.2 Of the 16 rooms assessed, 14 will meet the BRE target values with 2 falling marginally short. However the sunlight guidelines relate to living rooms only, and the room that fails to meet the target criteria to Plot 26 is a proposed kitchen and, as such, the failure is not thought to be significant.

4.2.3 The room that falls short of the target BRE value to North Jesmond House faces almost directly north, and so cannot have a reasonable expectation of direct sunlight. The daylight values to this room are particularly high, and so it can be said that it is room orientation which is limiting the availability of direct sunlight, rather the proposed design or external obstruction.

4.2.4 Where groups of dwellings are planned, as is the case here, the BRE Guide states that site layout design should aim to maximise the number of dwellings with a main living room that meet sunlight criteria. Given that 88% of rooms tested in the development will meet the target criteria, and that the flexibility of the design is limited by retaining North Jesmond House, it can be said that proper consideration has been given to the layout of the proposed dwellings.

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Appendix A

Tests to be Applied

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Introduction

The main purpose of the guidelines in the Building Research Establishment Report “Site Layout Planning for Daylight and Sunlight – a guide to good practice 2011, 2nd Edition” (“the BRE guide”) is to assist in the consideration of the relationship of new and existing buildings to ensure that each retains a potential to achieve good daylighting and sunlighting levels. That is, by following and satisfying the tests contained in the guidelines, new and existing buildings should be sufficiently spaced apart in relation to their relative heights so that both have the potential to achieve good levels of daylight and sunlight. The guidelines have been drafted primarily for use with low density suburban developments and should therefore be used flexibly when dealing with dense urban sites and extensions to existing buildings, a fact recognised by the BRE Report’s author in the Introduction where Dr Paul Littlefair says: ‘The Guide is intended for building designers and their clients, consultants and planning officials. The advice given here is not mandatory and the guide should not been seen as an instrument of planning policy; its aim is to help rather than constrain the designer. Although it gives numerical guidelines, these should be interpreted flexibly since natural lighting is only one of many factors in site layout design…… In special circumstances the developer or planning authority may wish to use different target values. For example, in a historic city centre, or in an area with modern high rise buildings, a higher degree of obstruction may be unavoidable if new developments are to match the height and proportions of existing buildings…..’

In many cases in low-rise housing, meeting the criteria for daylight and sunlight may mean that the BRE criteria for other amenity considerations such as privacy and sense of enclosure are also satisfied. The BRE guide states that recommended minimum privacy distances (in cases where windows of habitable rooms face each other in low-rise residential property), as defined by each individual Local Authority’s policies, vary widely, from 18-35m1. For two-storey properties a spacing within this range would almost certainly also satisfy the BRE guide’s daylighting requirements as it complies with the 250 rule and will almost certainly satisfy the ‘Three times height’ test too (as discussed more fully below). However, the specific context of each development will be taken into account and Local Authorities may relax the stated minimum, for instance, in built-up areas where this would lead to an inefficient use of land. Conversely, greater distances may be required between higher buildings, in order to satisfy daylighting and sunlighting requirements. It is important to recognize also that privacy can also be achieved by other means: design, orientation and screening can all play a key role and may also contribute towards reducing the theoretical ‘minimum’ distance.

A sense of enclosure is also important as the perceived quality of an outdoor space may be reduced if it is too large in the context of the surrounding buildings. In urban settings the BRE guide suggests a spacing-to-height ratio of 2.5:1 would provide a comfortable environment, whilst not obstructing too much natural light: this ratio also approximates the 250 rule.

Daylight

The criteria for protecting daylight to existing buildings are contained in Section 2.2 and Appendix C of the BRE guide. There are various methods of measuring and assessing daylight and the choice of test depends on the circumstances of each particular window. For example, greater protection should be afforded to windows which serve habitable dwellings and, in particular, those serving living rooms and family kitchens, with a lower requirement required for bedrooms. The BRE guide states that circulation spaces and bathrooms need not be tested as

1 The commonest minimum privacy distance is 21m (Householder Development Consents Review: Implementation of Recommendations – Department for Communities and Local Government – May 2007)

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they are not considered to require good levels of daylight. In addition, for rooms with more than one window, secondary windows do not require assessment if it is established that the room is already sufficiently lit through the principal window. The tests should also be applied to non-domestic uses such as offices and workplaces where such uses will ordinarily have a reasonable expectation of daylight and where the areas may be considered a principal workplace.

The BRE has developed a series of tests to determine whether daylighting levels within new developments and rooms within existing buildings surrounding new developments will satisfy or continue to satisfy a range of daylighting criteria Note: Not every single window is assessed separately, only a representative sample, from which conclusions may be drawn regarding other nearby dwellings .

Daylighting Tests

‘Three times height’ test - If the distance of each part of the new development from the existing windows is three or more times its height above the centre of the existing window then loss of light to the existing windows need not be analysed. If the proposed development is taller or closer than this then the 250 test will need to be carried out. 250 test – a very simple test that should only be used where the proposed development is of a reasonably uniform profile and is directly opposite the existing building. Its use is most appropriate for low density well-spaced developments such as new sub-urban housing schemes and often it is not a particularly useful tool for assessing urban and in-fill sites. In brief, where the new development subtends to an angle of less than 250 to the centre of the lowest window of an existing neighbouring building, it is unlikely to have a substantial effect on the diffuse skylight enjoyed by the existing building. Equally, the new development itself is also likely to have the potential for good daylighting. If the angle is more than 250 then more detailed tests are required, as outlined below. VSC Test - the VSC is a unit of measurement that represents the amount of available daylight from the sky, received at a particular window. It is measured on the outside face of the window. The ‘unit’ is expressed as a percentage as it is the ratio between the amount of sky visible at the given reference point compared to the amount of light that would be available from a totally unobstructed hemisphere of sky. To put this unit of measurement into perspective, the maximum percentage value for a window with a completely unobstructed outlook (i.e. with a totally unobstructed view through 90o in every direction) is 40%. The target figure for VSC recommended by the BRE is 27%. A VSC of 27% is a relatively good level of daylight and the level we would expect to find for habitable rooms with windows on principal elevations. However, this level is often difficult to achieve on secondary elevations and in built-up urban environments. For comparison, a window receiving 27% VSC is approximately equivalent to a window that would have a continuous obstruction opposite it which subtends an angle of 25o (i.e. the same results as would be found utilising the 250 Test). Where tests show that the new development itself meets the 27% VSC target this is a good indication that the development will enjoy good daylighting and further tests can then be carried out to corroborate this (see under). Through research the BRE have determined that in existing buildings daylight (and sunlight levels) can be reduced by approximately 20% of their original value before the loss is materially noticeable. It is for this reason that they consider that a 20% reduction is permissible in circumstances where the existing VSC value is below the 27% threshold. For existing buildings

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once this has been established it is then necessary to determine whether the distribution of daylight inside each room meets the required standards (see under). Daylight Distribution (DD) Test – This test looks at the position of the “No-Sky Line” (NSL) – that is, the line that divides the points on the working plane (0.7m from floor level in offices and 0.85m in dwellings and industrial spaces) which can and cannot see the sky. The BRE guide suggests that areas beyond the NSL may look dark and gloomy compared with the rest of the room and BS8206 states that electric lighting is likely to be needed if a significant part of the working plane (normally no more than 20%) lies beyond it. In new developments no more than 20% of a room’s area should be beyond the NSL. For existing buildings the BRE guide states that if, following the construction of a new development, the NSL moves so that the area beyond the NSL increases by more than 20%, then daylighting is likely to be seriously affected. The guide suggests that in houses, living rooms, dining rooms and kitchens should be tested: bedrooms are deemed less important, although should nevertheless be analysed. In other buildings each main room where daylight is expected should be investigated. ADF Test –The ADF (Average Daylight Factor) test takes account of the interior dimensions and surface reflectance within the room being tested as well as the amount of sky visible from the window. For this reason it is considered a more detailed and representative measure of the adequacy of light. The minimum ADF values recommended in BS8206 Part 2 are: 2% for family kitchens (and rooms containing kitchens); 1.5% for living rooms; and 1% for bedrooms. This is a test used in assessing new developments, although, in certain circumstances, it may be used as a supplementary test in the assessment of daylighting in existing buildings, particularly where more than one window serves a room. Room depth ratio test - This is a test for new developments looking at the relative dimensions of each room (principally its depth) and its window(s) to ensure that the rear half of a room will receive sufficient daylight so as not to appear gloomy.

Sunlight

Sunlight is an important ‘amenity’ in both domestic and non-domestic settings. The way in which a building’s windows are orientated and the overall position of a building on a site will have an impact on the sunlight it receives but, importantly, will also have an effect on the sunlight neighbouring buildings receive. Unlike daylight, which is non-directional and assumes that light from the sky is uniform, the availability of sunlight is dependent on direction. That is, as the United Kingdom is in the northern hemisphere, we receive virtually all of our sunlight from the south. The availability of sunlight is therefore dependent on the orientation of the window or area of ground being assessed relative to the position of due south. In new developments the BRE guide suggests that dwellings should aim to have at least one main living room which faces the southern or western parts of the sky so as to ensure that it receives a reasonable amount of sunlight. Where groups of dwellings are planned the Guide states that site layout design should aim to maximise the number of dwellings with a main living room that meet sunlight criteria. Where a window wall faces within 900 of due south and no obstruction subtends to angle of more than 250 to the horizontal or where the window wall faces within 200 of due south and the reference point has a VSC of at least 27% then sunlighting will meet the required standards: failing that the Annual Probable Sunlight Hours (APSH) need to be analysed. APSH means the total number of hours in the year that the sun is expected to shine on unobstructed ground, allowing for average levels of cloud for the location in question. If the APSH tests reveal that the new development will receive at least one quarter of the available APSH, including at least 5% of APSH during the winter months (from 21 September to

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21 March), then the requirements are satisfied. It should be noted that if a room has two windows on opposite walls, the APSH due to each can be added together. The availability of sunlight is also an important factor when looking at the impact of a proposed development on the existing surrounding buildings. APSH tests will be required where one or more of the following are true:

• The ‘Three times height’ test is failed (see ‘Daylight’ above);

• The proposed development is situated within 900 of due south of an existing building’s main window wall and the new building subtends to angle of more than 250 to the horizontal;

• The window wall faces within 200 of due south and a point at the centre of the window on

the outside face of the window wall (the reference point) has a VSC of less than 27%. Where APSH testing is required it is similar to the test for the proposed development. That is to say that compliance will be demonstrated where a room receives:

• At least 25% of the APSH (including at least 5% in the winter months), or

• At least 0.8 times its former sunlight hours during either period, or

• A reduction of no more than 4% APSH over the year . The Guide stresses that the target values it gives are purely advisory, especially in circumstances such as: the presence of balconies (which can overhang windows, obstructing light); when an existing building stands unusually close to the common boundary with the new development and; where the new development needs to match the height and proportion of existing nearby buildings. In circumstances like these a larger reduction in sunlight may be necessary. The sunlight criteria in the BRE guide primarily apply to windows serving living rooms of an existing dwelling. This is in contrast to the daylight criteria which apply to kitchens and bedrooms as well as living rooms. Having said that, the guide goes on to say that care should be taken not to block too much sun from kitchens and bedrooms. Non-domestic buildings which are deemed to have a requirement for sunlight should also be checked.

Sunlight – Gardens and Open Spaces

As well as ensuring buildings receive a good level of sunlight to their interior spaces, it is also important to ensure that the open spaces between buildings are suitably lit. The recommendations as set out in the BRE guide are meant to ensure that spaces between buildings are not permanently in shade for a large part of the year. Trees and fences over 1.5m tall are also factored into the calculations. The BRE guidelines state that:

• For a garden or amenity area to appear adequately sunlit throughout the year, at least 50% of the area should receive at least two hours of sunlight on 21 March;

• In addition, if, as result of new development, an existing garden or amenity area does not reach the area target above and the area which can receive two hours of direct sunlight on 21 March is reduced by more than 20% this loss is likely to be noticeable.

Appendix G of the BRE guidelines describes a methodology for calculating sunlight availability for amenity spaces.

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Appendix B

Context Drawings

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Appendix C

Window/Room Reference Drawings

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Appendix D

Daylight Study

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Jesmond TowersNewcastle

INTERNAL AVERAGE DAYLIGHT FACTOR ANALYSIS MAY 2012

TOTAL PASS/Room Room Use Window VSC(%) ADF(%) ADF(%) FAIL

PLOT 8

Ground FloorR1/10 LKD W2/10 31.70 1.23 R1/10 LKD W3/10 32.36 0.36 R1/10 LKD W4/10 27.31 0.58 R1/10 LKD W5/10 30.21 0.63 2.80 PASS

R2/10 STUDY W1/10 34.26 1.81 1.81 PASS

First FloorR1/11 BEDROOM W1/11 35.76 1.38 1.38 PASS

R2/11 BEDROOM W2/11 33.28 2.49 R2/11 BEDROOM W3/11 33.87 0.73 3.22 PASS

PLOT 19

Ground FloorR1/20 KD W3/20 35.81 0.72 R1/20 KD W5/20 34.67 1.10 1.82 PASS

R2/20 LIVINGROOM W1/20 33.72 0.73 R2/20 LIVINGROOM W2/20 34.68 0.74 R2/20 LIVINGROOM W4/20 32.39 2.47 3.93 PASS

PLOT 20

Ground FloorR1/30 KD W1/30 30.22 0.64 R1/30 KD W2/30 31.43 0.65 R1/30 KD W5/30 27.32 0.93 2.22 PASS

R2/30 LIVINGROOM W3/30 32.94 1.18 R2/30 LIVINGROOM W4/30 31.03 2.09 3.27 PASS

PLOTS 27-42

Ground FloorR1/50 LKD W1/50 29.74 1.94 R1/50 LKD W2/50 17.87 1.61 3.55 PASS

R2/50 BEDROOM W3/50 28.80 3.73 3.73 PASS

First FloorR1/51 BEDROOM W1/51 27.66 1.09 R1/51 BEDROOM W2/51 25.32 2.28 3.37 PASS

R2/51 BEDROOM W3/51 21.35 2.03 2.03 PASS

R3/51 BEDROOM W4/51 20.91 3.13 3.13 PASS

R4/51 BEDROOM W5/51 24.26 3.17 3.17 PASS

PLOT 26

Ground FloorR1/60 BEDROOM W2/60 32.88 1.52 1.52 PASS

R2/60 KD W1/60 31.80 0.76 R2/60 KD W5/60 63.44 0.77 R2/60 KD W6/60 69.03 0.93 2.45 PASS

ADFINT180512_Rel1 1Job No. 30846

Rel 1

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Jesmond TowersNewcastle

INTERNAL AVERAGE DAYLIGHT FACTOR ANALYSIS MAY 2012

TOTAL PASS/Room Room Use Window VSC(%) ADF(%) ADF(%) FAIL

R3/60 LIVINGROOM W3/60 22.70 1.22 R3/60 LIVINGROOM W4/60 34.76 1.63 2.85 PASS

PLOTS 10-18

Ground FloorR1/70 LKD W2/70 33.91 0.60 R1/70 LKD W3/70 34.90 0.50 R1/70 LKD W4/70 34.57 2.23 3.33 PASS

R2/70 BEDROOM W1/70 34.47 3.10 3.10 PASS

R3/70 BEDROOM W5/70 18.79 1.47 1.47 PASS

First FloorR1/71 LKD W4/71 35.88 0.44 R1/71 LKD W5/71 36.69 1.49 R1/71 LKD W11/71 32.64 0.34 R1/71 LKD W12/71 32.83 0.34 2.61 PASS

R2/71 LKD W9/71 32.85 0.38 R2/71 LKD W10/71 33.67 0.38 R2/71 LKD W15/71 36.59 1.03 R2/71 LKD W16/71 35.18 0.46 2.24 PASS

R3/71 LKD W6/71 36.09 0.57 R3/71 LKD W8/71 10.94 0.20 R3/71 LKD W13/71 36.17 2.11 R3/71 LKD W14/71 36.41 0.47 3.35 PASS

R4/71 BEDROOM W7/71 36.74 3.33 3.33 PASS

R5/71 BEDROOM W1/71 38.32 0.79 R5/71 BEDROOM W2/71 38.34 1.77 R5/71 BEDROOM W3/71 38.36 0.79 3.35 PASS

PLOTS 21-25

Ground FloorR1/80 BEDROOM W5/80 32.67 1.11 R1/80 BEDROOM W6/80 30.30 1.45 2.56 PASS

R2/80 LKD W1/80 37.07 1.13 R2/80 LKD W2/80 36.91 1.31 R2/80 LKD W3/80 36.64 0.51 2.95 PASS

R3/80 BEDROOM W10/80 22.43 1.38 1.38 PASS

R4/80 KITCHEN W9/80 28.66 4.21 4.21 PASS

R5/80 LD W8/80 28.03 1.05 R5/80 LD W11/80 30.33 0.82 R5/80 LD W12/80 34.31 1.51 R5/80 LD W13/80 27.50 0.76 4.13 PASS

R6/80 BEDROOM W4/80 35.59 1.59 R6/80 BEDROOM W7/80 25.94 1.35 2.95 PASS

ADFINT180512_Rel1 2Job No. 30846

Rel 1

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Jesmond TowersNewcastle

DAYLIGHT DISTRIBUTION ANALYSIS MAY 2012

Room/ Whole Prev New Loss %LossFloor Room sq ft sq ft sq ft

Plot 9

R1/90 139.2 101.6 75.3 26.3 25.9

R2/90 139.1 113.0 87.8 25.2 22.3

DD_Plot 9 24/05/2012 1Job No. 30846

Rel 1

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Jesmond TowersNewcastle

DAYLIGHT DISTRIBUTION ANALYSIS MAY 2012

Room/Floor Room Use Room Area No-Sky Line % Of Room Areasq ft sq ft

PLOT 8

Ground FloorR1/10 LKD 401.1 397.5 99.1R2/10 STUDY 119.8 117.6 98.2First FloorR1/11 BEDROOM 109.3 105.8 96.8R2/11 BEDROOM 240.9 239.9 99.6

PLOT 19

Ground FloorR1/20 KD 281.6 281.6 100.0R2/20 LIVINGROOM 274.0 274.0 100.0

PLOT 20

Ground FloorR1/30 KD 265.3 263.7 99.4R2/30 LIVINGROOM 319.0 318.5 99.8

PLOTS 27-42

Ground FloorR1/50 LKD 397.4 394.5 99.3R2/50 BEDROOM 157.6 156.8 99.5First FloorR1/51 BEDROOM 158.8 157.9 99.4R2/51 BEDROOM 129.3 84.4 65.3R3/51 BEDROOM 129.6 101.6 78.4R4/51 BEDROOM 176.7 140.0 79.2

PLOT 26

Ground FloorR1/60 BEDROOM 92.4 90.0 97.4R2/60 KD 204.1 176.4 86.4R3/60 LIVINGROOM 176.3 176.3 100.0

PLOTS 10-18

Ground FloorR1/70 LKD 433.9 432.8 99.7R2/70 BEDROOM 144.0 140.1 97.3R3/70 BEDROOM 171.1 154.6 90.4First FloorR1/71 LKD 642.3 591.2 92.0R2/71 LKD 566.3 531.3 93.8R3/71 LKD 476.1 474.9 99.7R4/71 BEDROOM 140.4 137.2 97.7R5/71 BEDROOM 244.8 235.9 96.4

DDINT180512_Rel1 1Job No. 30846

Rel 1

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Jesmond TowersNewcastle

DAYLIGHT DISTRIBUTION ANALYSIS MAY 2012

Room/Floor Room Use Room Area No-Sky Line % Of Room Areasq ft sq ft

PLOTS 21-25

Ground FloorR1/80 BEDROOM 136.2 131.7 96.7R2/80 LKD 365.1 361.2 98.9R3/80 BEDROOM 166.8 123.3 73.9R4/80 KITCHEN 90.4 88.7 98.1R5/80 LD 383.3 376.7 98.3R6/80 BEDROOM 250.6 249.3 99.5

DDINT180512_Rel1 2Job No. 30846

Rel 1

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Jesmond TowersNewcastle

VSC DAYLIGHT ANALYSIS MAY 2012

EXISTING PROPOSED LOSS %LOSS PASS/Room Window VSC VSC VSC VSC FAIL

Plot 9

R1/90 W1/90 32.61 26.23 6.38 19.56 PASS

R2/90 W2/90 29.38 23.74 5.64 19.20 PASS

VSC_Plot 9 24/05/2012 1Job No. 30846

Rel 1

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Appendix E

Sunlight Study

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Jesmond TowersNewcastle

APSH SUNLIGHT ANALYSIS MAY 2012

Window RoomExisting Proposed Existing Proposed

Winter Annual Winter Annual Winter Annual Pass/ Winter Annual Winter Annual Winter Annual Pass/Room Window OrientationAPSH APSH APSH APSH %Loss %Loss Fail APSH APSH APSH APSH %Loss %Loss Fail

Plot 9

R1/90 W1/90 170.4 25 73 16 65 36.0 11.0 PASS 25 73 16 65 36.0 11.0 PASS

R2/90 W2/90 170.4 21 64 15 63 28.6 1.6 PASS 21 64 15 63 28.6 1.6 PASS

Job No. 30846Rel 1

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Jesmond TowersNewcastle

INTERNAL SUNLIGHT ANALYSIS MAY 2012

RoomRoom Winter Annual Pass/

Room Window Use Orientation APSH APSH Fail

PLOT 8

Ground FloorR1/10 W2/10 LKD 95.6 R1/10 W3/10 LKD 95.6 R1/10 W4/10 LKD 275.6 R1/10 W5/10 LKD 275.6 21 83 PASS

R2/10 W1/10 STUDY 95.6 16 50 PASS

PLOT 19

Ground FloorR1/20 W3/20 KD 274.0 R1/20 W5/20 KD 94.0 12 82 PASS

R2/20 W1/20 LIVINGROOM 274.0 R2/20 W2/20 LIVINGROOM 274.0 R2/20 W4/20 LIVINGROOM 94.0 9 78 PASS

PLOT 20

Ground FloorR1/30 W1/30 KD 274.0 R1/30 W2/30 KD 274.0 R1/30 W5/30 KD 94.0 9 65 PASS

R2/30 W3/30 LIVINGROOM 274.0 R2/30 W4/30 LIVINGROOM 94.0 9 76 PASS

PLOTS 27-42

Ground FloorR1/50 W1/50 LKD 94.2 R1/50 W2/50 LKD 94.2 9 30 PASS

PLOT 26

Ground FloorR2/60 W1/60 KD 274.0 R2/60 W5/60 KD 229.7 R2/60 W6/60 KD 272.8 4 62 FAIL

R3/60 W3/60 LIVINGROOM 274.0 R3/60 W4/60 LIVINGROOM 94.0 6 51 PASS

APSHINT180512_Rel1 1Job No. 30846

Rel 1

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Jesmond TowersNewcastle

INTERNAL SUNLIGHT ANALYSIS MAY 2012

RoomRoom Winter Annual Pass/

Room Window Use Orientation APSH APSH Fail

PLOTS 10-18

Ground FloorR1/70 W2/70 LKD 274.0 R1/70 W3/70 LKD 184.0 R1/70 W4/70 LKD 184.0 24 87 PASS

First FloorR1/71 W4/71 LKD 4.0 R1/71 W5/71 LKD 4.0 R1/71 W11/71 LKD 94.0 R1/71 W12/71 LKD 94.0 15 54 PASS

R2/71 W9/71 LKD 94.0 R2/71 W10/71 LKD 94.0 R2/71 W15/71 LKD 184.0 R2/71 W16/71 LKD 184.0 28 87 PASS

R3/71 W6/71 LKD 274.0 R3/71 W8/71 LKD 94.0 R3/71 W13/71 LKD 184.0 R3/71 W14/71 LKD 184.0 26 89 PASS

PLOTS 21-25

Ground FloorR2/80 W1/80 LKD 4.2 R2/80 W2/80 LKD 4.2 R2/80 W3/80 LKD 4.2 0 7 FAIL

R4/80 W9/80 KITCHEN 274.2 10 36 PASS

R5/80 W8/80 LD 274.2 R5/80 W11/80 LD 230.4 R5/80 W12/80 LD 184.2 R5/80 W13/80 LD 138.1 25 76 PASS

APSHINT180512_Rel1 2Job No. 30846

Rel 1