west brompton village - my earls court standard bs8206-2:2008 and the applications manual on window...

West Brompton Village Detailed Planning ApplicationRoyal Borough of Kensington & Chelsea

Internal Daylight and Sunlight ReportNovember 2013

Prepared for EC Properties Ltdby GIA

DAYLIGHT+SOLAR DESIGN

GIA The Whitehouse, Belvedere Road, London SE1 8GA t 020 7202 1400 f 020 7202 1401 e [email protected] w www.gia.uk.com

5066 - West Bromptom Village Internal Daylight and Sunlight Report

Issue No: IS91-5066

Page No: 2

Date: November 27, 2013

Sources of information:

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Project Number

Project Title

Report Title

Prepared by

Checked by

Dated

Type

Revisions

Architect

Client Capco

Pilbrow & Partners

West Bromptom Village

5066

Internal Daylight and Sunlight Report

November 27, 2013

VL

AB

Notes:

Planning

--

Signed:

Date:




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1. Executive SummaryThe purpose of this report is to ascertain whether the proposed development will provide residential accommodation considered acceptable in terms of day-light and sunlight.

The proposed development has been designed by Pilbrow and Partners along-side GIA in order to maximise the ingress of daylight and sunlight enjoyed by future occupants.

In order to ascertain the levels of daylight within WV06A and BW07F, technical assessments of Average Daylight Factor (ADF), No Sky Line (NSL) and Room Depth Criterion (RDC) have been undertaken within all habitable residential rooms.

These assessments have shown excellent levels of daylight throughout the proposed development, with 87% of rooms within WV05A and 99% of rooms within BW07F meeting or exceeding the recommended levels of Average Day-light Factor. The very few rooms falling short of recommendation still see ac-ceptable levels of daylight and so we find the scheme performs well in terms of daylight.

All windows assessed see levels of Annual Probable Sunlight Hours meeting or exceeding the minima recommended by the BRE and as such will provide the future occupants will excellent levels of sunlight.

Overall we consider the design to perform very well and will provide future oc-cupants with good levels of daylight and sunlight.

2. Introduction and ObjectiveGIA has been instructed to provide a report upon the potential availability of Daylight and Sunlight to the proposed accommodation within the residential scheme prepared by Pilbrow & Partners. GIA was specifically instructed to car-ry out the following:

• To create a 3D computer model of the proposal based upon drawings pre-pared by Pilbrow & Partners.

• Carry out a daylight assessment using the methodologies set out in the BRE guidelines for Average Daylight Factor, No-Sky Line and Room Depth Criterion.

• Carry out a sunlight assessment using the methodologies set out in the BRE guidelines for Annual Probable Sunlight Hours (APSH) to the fenestra-tion facing within 90 degrees of due south.

• Prepare a report setting out the analysis and our findings.




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3. BRE guidelinesThe Building Research Establishment (BRE) have set out in their handbook Site Layout Planning for Daylight and Sunlight a Guide to Good Practice (2011), guidelines and methodology for the measurement and assessment of daylight and sunlight within proposed buildings. This document states that it is also in-tended to be used in conjunction with the interior daylight recommendations found within the British Standard BS8206-2:2008 and The Applications Manual on Window Design of the Chartered Institution of Building Services Engineers (CIBSE).

The guide also provides advice on site layout planning to determine the quality of daylight and sunlight within open spaces between buildings.

It is important to note, however, that this document is a guide whose stated aim “is to help rather than constrain the designer”.

The document provides advice, but also clearly states that it “is not mandatory and this document should not be seen as an instrument of planning policy.” The report acknowledges also in its introduction that “in special circumstances the developer or planning authority may wish to use different target values. For exam-ple, in a historic City centre a higher degree of obstruction may be unavoidable if new developments are to match the height and proportions of existing buildings.”

It is an inevitable consequence of the built up urban environment that daylight and sunlight will be more limited in these areas. It is well acknowledged that in such situations there may be many other conflicting and potentially more important planning and urban design matters to consider other than just the provision of ideal levels of daylight and sunlight.

3.1. DaylightThe BRE set out various methods for assessing the daylight within a proposed building within section 2.1 and Appendix C of the handbook. The summary of this, given at the end of section 2.1 of the guide, states as follows:

“In general, a building will retain the potential for good interior diffused day-lighting provided that on all its main faces:

A. No obstruction, measured in a vertical section perpendicular to the main face, from a point two metres above ground level, subtends an angle of more than 25 degrees to the horizontal;

Or

B. If (A) is not satisfied, then all points on the main face on a line two metres above ground level are within four metres (measured sideways) of a point which has a vertical sky line component of 27% or more.”

3.1.1. Vertical Sky Component (VSC)This method of assessment can be undertaken using a skylight indicator or a Waldram diagram. It measures from a single point, at the centre of the window if known at the early design stage, the quantum of sky visible taking into ac-count all external obstructions. Whilst these obstructions can be either other

buildings or the general landscape, trees are usually ignored unless they form a continuous or dense belt of obstruction.

The VSC method is a useful ‘rule of thumb’ but has some significant limitations in determining the true quality of daylight within a proposed building. It does not take into account the size of the window, any reflected light off external obstructions, any reflected light within the room, or the use to which that room is put. Appendix C of the guide goes into more detail on these matters and sets forward alternative methods for assessment to overcome these limitations.

Appendix C of the BRE guide: Interior Daylighting Recommendations, states:

“The British Standard for daylighting, and the CIBSE Applications manual: win-dow design, contain advice and guidance on interior daylighting. This guide to good practice is intended to be used in conjunction with them, and its guid-ance is intended to fit in with their recommendations.

For skylight, the British Standard and the CIBSE manual put forward three main criteria, based on the average daylight factor, room depth, and the posi-tion of the no skyline.”

These assessments are set out below.

3.1.2. Average Daylight Factor (ADF)“If a predominantly daylit appearance is required, then df should be 5% or more if there is no supplementary electric lighting, or 2% or more if supple-mentary electric lighting is provided. There are additional recommendations for dwellings, of 2% for kitchens, 1.5% for living rooms and 1% for bedrooms. These last are minimum values of Average Daylight Factor, and should be at-tained even if a predominantly daylit appearance is not required.”

This method of assessment takes into account the total glazed area to the room, the transmittance quality of the glazing proposed, the total area of the room surfaces including ceilings and floors, and the internal average reflectance for the room being assessed. The method also takes into account the Vertical Sky Component and the quantum of reflected light off external surfaces.

This is, therefore, a significantly more detailed method of assessment than the Vertical Sky Component method set out above.

3.1.3. Room Depth Criteria (RDC)Where it has access to daylight from windows in one wall only, the depth of a room can become a factor in determining the quantity of light within it. The BRE guidance provides a simple method for examining the ratio of room depth to window area. However, whilst it does take into account internal surface re-flections, this method also has significant limitations in that it does not take into account any obstructions outside the window and therefore draws no in-put from the quantity of light entering the room.

3.1.4. No sky lineThis third method of assessment is a simple test to establish where within the proposed room the sky will be visible through the windows, taking into ac-count external obstructions. The assessment is undertaken at working plane




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height (850mm above floor level) and the method of calculation is set out in Appendix D of the BRE handbook.

Appendix C of the BRE handbook states “if a significant area of the working plane lies beyond the no skyline (i.e., it receives no direct skylight), then the distribution of daylight in the room will look poor and supplementary electric lighting will be required.” To guarantee a satisfactory daylight uniformity, the area which does not receive direct skylight should not exceed 20% of the floor area, as quanti-fied in the BS 8206 Part2 2008.

3.1.5. SummaryThe Average Daylight Factor gives a more detailed assessment of the daylight within a room and takes into account the highest number of factors in estab-lishing a quantitative output.

However, the conclusion of Appendix C of the BRE guide states:

“All three of the criteria need to be satisfied if the whole of the room is to look adequately daylit. Even if the amount of daylight in a room (given by the Aver-age Daylight Factor) is sufficient, the overall daylight appearance will be im-paired if its distribution is poor.”

In most urban areas it is important to recognise that the distribution of day-light within a room may be difficult to achieve, given the built up nature of the environment. Consequently, most local authorities seek to ensure that there is sufficient daylight within the room as determined by the Average Daylight Factor calculation. However, the additional recommendations of the BRE and British Standard for residential accommodation, set out above, ought not to be overlooked.

3.2. SunlightThe BRE provide guidance in respect of sunlight quality for new developments within section 3.1 of the handbook. It is generally acknowledged that the pres-ence of sunlight is more significant in residential accommodation than it is in commercial, and this is reflected in the BRE document.

It states, “in housing, the main requirement for sunlight is in living rooms, where it is valued at any time of the day, but especially in the afternoon. Sunlight is also re-quired in conservatories. It is viewed as less important in bedrooms and in kitchens where people prefer it in the morning rather than the afternoon.”

The BRE guide considers the critical aspects of orientation and overshadowing in determining the availability of sunlight at a proposed development site.

The guide proposes minimizing the number of dwellings whose living room face solely north unless there is some compensating factor such as an appeal-ing view to the north, and it suggests a number of techniques to do so. Further to this it discusses massing solutions with a sensitive approach to overshadow-ing, so as to maximize access to sunlight.

At the same time it acknowledges that the site’s existing urban environment may impose orientation or overshadowing constraints which may not be pos-sible to overcome.

So as to quantify sunlight access for interiors where sunlight is expected, it re-fers to the BS 82606-2 criterion of Annual Probable Sunlight Hours. APSH is defined as “the total number of hours in the year that the sun is expected to shine on unobstructed ground, allowing for average levels of cloudiness at the location in question.” In line with the recommendation, APSH is measured from a point on the inside face of the window, should the locations have been decided. If these are unknown, sunlight availability is checked at points 1.6m above the ground or the lowest storey level on each main window wall, and no more than 5m apart. If a room has multiple windows on the same wall or on adjacent walls, the highest value of APSH should be taken into account. If a room has two windows on opposite walls, the APSH due to each can be added together.

The summary of section 3.1 of the guide states as follows:

“In general, a dwelling or non-domestic building which has a particular require-ment for sunlight, will appear reasonably sunlit provided that:

At least one main window faces within 90 degrees of due south;

and

The centre of at least one window to a main living room can receive 25% of annual probable sunlight hours, including at least 5% of annual probable sunlight hours in the winter months between 21 September and 21 March. “

In paragraph 3.1.11 the BRE guidance suggests that if a room faces significantly North of due East or West it is unlikely to meet the recommended levels proposed by the BS 8206-2. As such, it is clear that only windows facing within 90 degrees of due South can be assessed using this methodology.

It is also worth noting how paragraph 5.3 of the BS 8206-2 suggests that with re-gards to sunlight duration “the degree of satisfaction is related to the expectation of sunlight if a room is necessarily north facing or if the building is in a densely-built urban area, the absence of sunlight is more acceptable than when its exclusion seems arbitrary”.

3.3. OvershadowingThe BRE guidance in respect of overshadowing of amenity spaces is set out in section 3.3 of the handbook. Here it states as follows:

“Sunlight in the spaces between buildings has an important impact on the overall appearance and ambiance of a development. It is valuable for a num-ber of reasons:

• To provide attractive sunlit views (all year)

• To make outdoor activities, like sitting out and children’s play more pleasant (mainly during the warmer months)

• To encourage plant growth (mainly in spring and summer)

• To dry out the ground, reducing moss and slime (mainly during the colder months)

• To melt frost, ice and snow (in winter)




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• To dry clothes (all year)”

Again, it must be acknowledged that in urban areas the availability of sunlight on the ground is a factor which is significantly controlled by the existing ur-ban fabric around the site in question and so may have very little to do with the form of the development itself. Likewise there may be many other urban design, planning and site constraints which determine and run contrary to the best form, siting and location of a proposed development in terms of availabil-ity of sun on the ground.

The summary of section 3.3 of the guide states as follows:

“3. 3 .17 It is recommended that for it to appear adequately sunlit throughout the year, at least half of a garden or amenity area should receive at least two hours of sunlight on 21 March. If as a result of new development an existing garden or amenity area does not meet the above, and the area which can re-ceive two hours of sun on 21 March is less than 0.8 times its former value, then the loss of sunlight is likely to be noticeable. If a detailed calculation cannot be carried out, it is recommended that the centre of the area should receive at east two hours of sunlight on 21 March.”

3.4. Further relevant informationFurther information can be found in The Daylight in Urban Areas Design Guide (Energy Saving Trust CE257, 2007) which provides the following recommenda-tion with regards to VSC levels in urban areas:

“If ‘theta’ (Visible sky angle) is greater than 65º (obstruction angle less than 25º or VSC at least 27 percent) conventional window design will usually give reasonable results.

If ‘theta’ is between 45º and 65º (obstruction angle between 25º and 45º, VSC between 15 and 27 percent), special measures such as larger windows and

changes to room layout are usually needed to provide adequate daylight.

If ‘theta’ is between 25º and 45º (obstruction angle between 45º and 65º, VSC from 5 to 15 percent), it is very difficult to provide adequate daylight unless very large windows are used.

If ‘theta’ is less than 25º (obstruction angle more than 65º, VSC less than 5 per-cent) it is often impossible to achieve reasonable daylight, even if the whole window wall is glazed.”

4. MethodologyIn order to undertake the daylight and sunlight assessments set out above, we have prepared a three dimensional computer model and used specialist light-ing simulation software.

The three dimensional representation of the proposed development has been modelled using the scheme drawings provided to us by Pilbrow & Partners. This has been placed in the context of its surrounding buildings which have been modelled from survey information, photogrammetry, OS and site photo-graphs. This allows for a precise model, which in turn ensures that analysis ac-curately represents the amount of daylight and sunlight available to the build-ing facades, internal and external spaces, considering all of the surrounding obstructions and orientation.

4.1. Simulation assumptionsWhere no values for reflectance, transmittance and maintenance factor were specified by the designer the following values from BS 8206-2:2008, Annex A, tables A.1-A.6 were used for the calculation of Average Daylight Factor values. These values are shown in table 1.

Table 1: Typical reflectance, transmittance and maintenance factors

Reflectance values: Maintenance factors: Tv(normal) A.3 A.4 A.5 A.6 Tv(total)

Surrounding 0.2 Double Low‐E (frames modelled) 0.75 8 1 1 1 0.69Pavement 0.2 Double Low-E (frames not modelled) 0.75 8 1 1 0.8 0.55Grass 0.1 Double Low-E (inclined, frames modelled) 0.75 8 2 1 1 0.63Yellow brick 0.3 Double Low-E (inclined, frames not modelled) 0.75 8 2 1 0.8 0.50Red brick 0.2 Double Low-E (horizontal, frames modelled) 0.75 8 3 1 1 0.57Concrete 0.4 Double Low-E (horizontal, frames not modelled) 0.75 8 3 1 0.8 0.46Internal walls (light grey) 0.68Internal ceiling (white paint) 0.85 Single (frames modelled) 0.9 8 1 1 1 0.83Internal floor (medium to light veneer) 0.3 Single (frames not modelled) 0.9 8 1 1 0.8 0.66

Single (inclined, frames modelled) 0.9 8 2 1 1 0.76Transmittance values: Single (inclined, frames not modelled) 0.9 8 2 1 0.8 0.60

Single (horizontal, frames modelled) 0.9 8 3 1 1 0.68Double glazing: Single (horizontal, frames not modelled) 0.9 8 3 1 0.8 0.55Pilkington K Glass 4/16/4 Argon filled 90% Tv= 0.75

Double Translucent Low‐E (frames modelled) 0.74 8 1 1 1 0.68Single glazing: Double Translucent Low-E (frames not modelled) 0.74 8 1 1 0.8 0.54Pilkington Optifloat Clear, Annealed, 4mm Tv=0.90 Double Translucent Low-E (inclined, frames modelled) 0.74 8 2 1 1 0.62

Double Translucent Low-E (inclined, frames not modelled) 0.74 8 2 1 0.8 0.50Translucent glazing: Double Translucent Low-E (horizontal, frames modelled) 0.74 8 3 1 1 0.56Pilkington Optifloat Opal ‐ 4mm K /16/4mm Opal Tv= 0.74 Double Translucent Low-E (horizontal, frames not modelled) 0.74 8 3 1 0.8 0.45




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The remaining three rooms falling short of recommendation are Living/Kitch-en/Dining rooms which fall slightly short of the 2% recommended for kitchens but still see over the 1.5% recommended for living rooms. Achieving 1.8%, 1.7% and 1.9% ADF it is considered that these large rooms can be considered acceptably daylit living rooms.

The daylight distribution is excellent with almost all rooms meeting or exceed-ing the 80% No Sky Line values recommended by the BRE. The only exceptions are the two bedrooms on the basement and this is to be expected. All rooms have been designed to meet the Room Depth Criterion where this is applica-ble.

Overall we therefore find that the proposed design of WV05A performs very well in terms of daylight.

5.1.2. BW07FIn order to ascertain the levels of daylight within BW07F, technical assessments of Average Daylight Factor (ADF), No Sky Line (NSL) and Room Depth Criterion (RDC) have been undertaken within all habitable residential rooms.

The technical assessments undertaken have shown excellent levels of daylight throughout the proposed development, with 65 (99%) of the 66 habitable rooms meeting or exceeding the recommended levels of Average Daylight Factor (ADF).

Only one L/K/D identified as room 2 in page 14 of this report sees a lower level of ADF than recommended. This room still achieves 1.5% ADF though and whilst this is below the 2.0% recommended for kitchens, it achieves the level recommended for living rooms alone and as such it is considered that this will be an acceptably daylit living room.

As with WV05A the daylight distribution is very good with 60 (90%) of the 66 habitable rooms meeting or exceeding 80% NSL. The six rooms falling short of NSL all see levels of NSL above 50% and with acceptable levels of ADF, can be still be considered well daylit. All the rooms meet the Room Depth Criterion where applicable.

Overall we therefore find that the proposed design of BW07F performs very well in terms of daylight.

5. ConclusionsThe proposed development has been designed by Pilbrow and Partners along-side GIA in order to maximise the ingress of daylight and sunlight whilst taking into account the design constraints inherent with high density residential ac-commodation such as the desire to provide significant areas of private amenity often in the form of balconies.

5.1. Conclusion on Daylight

5.1.1. WV05AIn order to ascertain the levels of daylight within WV05A, technical assessments of Average Daylight Factor (ADF), No Sky Line (NSL) and Room Depth Criterion (RDC) have been undertaken within all habitable residential rooms.

The technical assessments undertaken have shown good levels of daylight throughout the building, with 41 (87%) of the 47 habitable rooms meeting or exceeding the recommended levels of Average Daylight Factor (ADF).

Two of the six rooms falling short are bedrooms located at basement level of the two townhouses and identified as numbers 0 and 1 in page 9 of this report. Both these rooms are secondary bedrooms lit through lightwells and although the windows have been maximised and the layouts optimised for daylight, levels of daylight lower than recommended are visible due to their basement nature. The rooms still achieve 0.6% and 0.8% ADF where 1% is recommended and this is considered acceptable for secondary bedrooms within generally well daylit homes as the future occupants can enjoy good levels of daylight within other rooms at the rear of the building at basement level or on upper floors.

One of the rooms falling short of recommendation is a Dining Room at the Lower Ground Floor of the southern townhouse which sees 1.3% ADF. This Dining Room falls short of recommendation due to its generous size, it should be noted that the same Dining Room in the other townhouse sees over the 1.5% ADF recommended due to its smaller size. Whilst 1.3% ADF is lower than the 1.5% recommended, this is again considered acceptable considering the excellently daylit kitchen, living room, study and bedrooms within the town-house.

5.2. Conclusion on SunlightIn order to ascertain the levels of sunlight which will be enjoyed within WV05A and BW07F, all living room windows within 90 degrees of due south have been assessed for Annual Probable Sunlight Hours (APSH), as recommended in the BRE guidance. The results can be seen in pages 19-22 of this report.

All windows assessed see levels of APSH meeting or exceeding the minima rec-ommended by the BRE and as such will provide the future occupants will excel-lent levels of sunlight, especially considering the dense urban environment.

We therefore find that the proposed designs perform excellently in terms of sunlight.

5.3. Summary The proposed development has been designed by Pilbrow and Partners along-side GIA in order to maximise the ingress of daylight and sunlight enjoyed by future occupants.

In order to ascertain the levels of daylight within WV06A and BW07F, technical assessments of Average Daylight Factor (ADF), No Sky Line (NSL) and Room Depth Criterion (RDC) have been undertaken within all habitable residential rooms.

These assessments have shown excellent levels of daylight throughout the proposed development, with 87% of rooms within WV05A and 99% of rooms within BW07F meeting or exceeding the recommended levels of Average Day-light Factor. The very few rooms falling short of recommendation still see ac-ceptable levels of daylight and so we find the scheme performs well in terms of daylight.

All windows assessed see levels of Annual Probable Sunlight Hours meeting or exceeding the minima recommended by the BRE and as such will provide the future occupants will excellent levels of sunlight.

Overall we consider the design to perform very well and will provide future oc-cupants with good levels of daylight and sunlight.




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Site Overview

Figure 1: Top view Figure 2: Perspective view

BW07F

BW07F

WV05A

WV05A




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Internal Daylight Assessments WV05A - Basement Floor

Table 2: Assessment Data Figure 3: Floor Plan

Room Ref. Room Use ADF (%) NSL (%) RDC

Basement0 Bedroom 0.6 49 Met1 Bedroom 0.8 58 Met2 Bedroom 3.9 91 Met3 Bedroom 3.8 96 Met

Daylight Quantum Distribution of Daylight

0

1

2

3




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Internal Daylight Assessments WV05A - Lower Ground Floor




Lower Ground Floor4 Dining Room 1.7 92 N/A5 Dining Room 1.3 93 N/A6 Kitchen 2.4 99 Met7 Kitchen 2.7 99 Met

4

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6

7




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Internal Daylight Assessments WV05A - Ground Floor




Ground Floor8 Study 3.2 93 N/A9 Study 3.2 93 N/A10 L/K/D 1.8 96 Met11 Bedroom 3.2 99 Met12 Bedroom 1.9 96 Met13 Bedroom 2.4 97 Met14 L/K/D 1.7 97 Met15 L/K/D 1.9 98 Met16 Bedroom 2.4 97 Met17 Bedroom 2.2 97 Met18 Bedroom 2.7 98 Met19 L/K/D 5.1 100 N/A20 Bedroom 3.9 100 Met21 Bedroom 1.9 96 Met22 L/K/D 3.6 100 N/A23 Bedroom 3.4 98 N/A24 Living Room 4.2 99 N/A25 Living Room 5.5 100 N/A

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Internal Daylight Assessments WV05A - First Floor




First Floor26 Bedroom 4.8 100 N/A27 Bedroom 12.5 100 N/A28 L/K/D 2.0 97 Met29 Bedroom 3.7 99 Met30 Bedroom 2.2 97 Met31 Bedroom 2.5 97 Met32 L/K/D 1.9 98 Met33 L/K/D 2.3 99 Met34 Bedroom 3.0 98 Met35 Bedroom 2.4 97 Met36 Bedroom 3.3 100 Met37 L/K/D 5.7 100 N/A38 Bedroom 4.8 100 Met39 Bedroom 2.3 97 Met40 L/K/D 5.2 100 N/A41 Bedroom 3.7 98 N/A

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Internal Daylight Assessments WV05A - Second Floor




Second Floor42 L/K/D 6.0 99 N/A43 Bedroom 9.1 100 Met44 Bedroom 6.8 100 N/A45 Bedroom 4.0 99 Met46 Bedroom 3.1 98 Met47 Bedroom 4.0 99 Met48 L/K/D 5.1 100 N/A

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Internal Daylight Assessments BW07F - Ground Floor



Ground Floor0 Bedroom 3.0 90 Met1 L/K/D 2.0 75 N/A2 L/K/D 1.5 78 Met3 Bedroom 1.7 85 Met4 Bedroom 4.5 99 N/A5 Bedroom 1.8 63 Met6 L/K/D 3.9 99 Met7 Bedroom 1.0 85 Met8 Bedroom 3.3 100 Met9 Bedroom 4.0 98 Met10 L/K/D 5.7 100 N/A11 L/K/D 2.2 79 N/A12 Bedroom 2.4 97 Met13 Bedroom 3.4 95 Met14 Bedroom 2.9 93 Met15 Bedroom 1.7 96 N/A16 L/K/D 2.2 99 Met17 L/K/D 2.3 100 Met18 Bedroom 2.7 98 Met


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Internal Daylight Assessments BW07F - First Floor




First Floor19 L/K/D 3.8 98 N/A20 Bedroom 3.1 96 Met21 Bedroom 3.0 96 Met22 L/K/D 2.8 84 N/A23 L/K/D 2.0 86 Met24 Bedroom 2.9 96 Met25 Bedroom 5.0 98 N/A26 Bedroom 2.0 64 Met27 L/K/D 4.1 100 Met28 Bedroom 1.1 89 Met29 Bedroom 3.8 100 Met30 Bedroom 8.7 99 Met31 L/K/D 7.2 100 N/A32 L/K/D 2.6 80 N/A33 Bedroom 5.9 98 Met34 Bedroom 3.0 97 Met35 Bedroom 3.7 95 Met36 Bedroom 2.2 98 N/A37 L/K/D 2.6 99 Met38 L/K/D 2.8 99 Met39 Bedroom 3.2 98 Met40 Bedroom 5.2 98 Met41 Bedroom 5.5 99 Met42 L/K/D 4.4 100 N/A

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Internal Daylight Assessments BW07F - Second Floor




Second Floor43 Bedroom 7.0 100 N/A44 Bedroom 5.0 100 Met45 Bedroom 3.3 99 Met46 Bedroom 5.8 100 Met47 Bedroom 3.1 98 Met48 L/K/D 4.3 100 N/A49 L/K/D 5.9 100 N/A50 Bedroom 2.8 98 Met51 Bedroom 5.0 100 N/A52 Bedroom 1.7 73 Met53 L/K/D 5.3 100 Met54 Bedroom 3.4 98 Met55 Bedroom 5.8 99 Met56 L/K/D 11.3 100 N/A57 Bedroom 11.3 96 Met58 L/K/D 5.1 99 N/A59 Bedroom 4.5 94 Met60 Bedroom 3.8 99 Met61 Bedroom 4.5 98 Met62 L/K/D 5.5 98 N/A

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Internal Daylight Assessments BW07F - Third Floor




Third Floor63 L/K/D 7.9 100 N/A

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Internal Daylight Assessments BW07F - Fourth Floor




Fourth Floor64 Bedroom 11.0 100 N/A65 Bedroom 10.6 100 N/A

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Sunlight Assessment - WV05A

Figure 13: Annual Probable Sunlight Hours - Total Figure 14: Annual Probable Sunlight Hours - Winter




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Sunlight Assessment - WV05A





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Sunlight Assessment - BW07F





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Sunlight Assessment - BW07F


west brompton village - my earls court standard bs8206-2:2008 and the applications manual on window...

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