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Client : The Rooftop Housing Group
Assessment of Daylight and Sunlight Provision to the Proposed Residential Apartment Building at the Church of St Aldate, Reservoir Road, Gloucester.
July 2016
Herrington Consulting Limited
Unit 6 – Barham Business Park
Elham Valley Road
Barham
Canterbury
Kent, CT4 6DQ
Tel/Fax +44 (0)1227 833855
www.herringtonconsulting.co.uk
This report has been prepared by Herrington Consulting Ltd in accordance with the instructions of their
client, Rooftop Housing Group, for their sole and specific use. Any other persons who use any information
contained herein do so at their own risk.
© Herrington Consulting Limited 2016
Template Rev – March16
Client : The Rooftop Housing Group
Assessment of Daylight and Sunlight Provision to the Proposed Residential Apartment Building at the Church of St Aldate, Reservoir Road, Gloucester.
Contents Amendment Record
This report has been issued and amended as follows:
Issue Revision Description Date Written by Checked by
1 0 First issue 8th July 2016 NMM SPH
Contents
1 Background and Scope of Appraisal 1
2 The Site and Development Proposals 2
2.1 Site Location 2
2.2 The Development 2
3 Policy and Guidance 3
3.1 National Planning Policy 3
3.2 Local Planning Policy 3
3.3 Best Practice Guidance 3
4 Assessment Techniques 4
4.1 Background 4
4.2 Average Daylight Factor 4
5 Assessment Methodology 5
5.1 Method of Baseline Data Collation 5
5.2 Numerical Modelling 5
5.3 Calculation Assumptions 5
6 Daylight Provision Within New Rooms 7
6.1 Average Daylight Factor 7
7 Sunlight Provision Within New Rooms 8
7.1 Annual Probable Sunlight Hours Assessment 8
8 Conclusions 10
A Appendices 11
1
1 Background and Scope of Appraisal
Herrington Consulting has been commissioned by the Rooftop Housing Group to analyse and
quantify the provision of natural daylight and sunlight to the habitable rooms within the proposed
new apartment block, which forms part of the residential development on the site of the St
Aldate’s Church vicarage, on Reservoir Road, Gloucester.
2
2 The Site and Development Proposals
2.1 Site Location
The site is located on the outer suburban edge of the city of Gloucester, in Gloucestershire, south
west England. The location of the site is shown in Figure 2.1 and the site plan included in
Appendix A.1 of this report gives a more detailed reference to the site location and layout.
Figure 2.1 – Location map of site. (Contains Ordnance Survey data © Crown copyright and
database right 2014)
2.2 The Development
The proposals for development are to, firstly demolish two of the existing buildings on site; the old
church hall and vicarage buildings. Secondly, new residential dwellings and a residential
apartment block will be constructed. The church building of St Aldate itself will be retained on the
northern edge of the site. Drawings of the proposed scheme are included in Appendix A.1 of this
report.
Site
3
3 Policy and Guidance
3.1 National Planning Policy
National Planning Policy Framework (2012)
The National Planning Policy Framework adopted on the 27th March 2012, replacing the Planning
Policy Statements and Planning Policy Guidance, stipulates that “…planning policies and
decisions should always seek to secure a good standard of amenity for existing and future
occupants of land and buildings.”
National Planning Practice Guidance (2014)
The National Planning Practice Guidance was launched in 2014, creating an online resource for
planning practitioners. The guidance does not provide any further detail in terms of amenity
beyond that stated above.
3.2 Local Planning Policy
Gloucester City Council SPD Heights of Buildings: Guidelines for developers in the
Gloucester Area (November 2008)
Page 30 of the document states, “Applicants will be required to: Describe how the proposals are
designed to provide high quality spaces around the development, including issues relating to
daylight and over-shadowing, landscaping, surveillance, safety and the hierarchy of spaces.”
3.3 Best Practice Guidance
In the absence of official national planning guidance / legislation on daylight and sunlight, the
most recognised guidance document is published by the Building Research Establishment and
entitled ‘Site Layout Planning for Daylight and Sunlight – A Guide to Good Practice’, Second
Edition, 2011; herein referred to as the ‘BRE Guidelines’.
The BRE Guidelines are not mandatory and themselves state that they should not be used as an
instrument of planning policy, however in practice they are heavily relied upon as they provide a
good guide to approach, methodology and evaluation of daylight and sunlight provision within
new developments.
In conjunction with the BRE Guidelines further guidance is given within the British Standard (BS)
8206-2:2008: ‘Lighting for buildings - Part 2: Code of practice for daylighting’.
In this assessment the BRE Guidelines have been used to establish the extent to which the
Proposed Development meets current best practice guidelines.
4
4 Assessment Techniques
4.1 Background
Natural light refers to both daylight and sunlight. However, a distinction between these two
concepts is required for the purpose of analysis and quantification of natural light in buildings. In
this assessment, the term ‘Daylight’ is used for natural light where the source is the sky in
overcast conditions, whilst ‘Sunlight’ refers specifically to the light coming directly from the sun.
4.2 Average Daylight Factor
The Average Daylight Factor (ADF) method calculates the average illuminance within a room as a
proportion of the illuminance available to an unobstructed point outdoors under a sky of known
luminance and luminance distribution. This is the most detailed of the daylight calculations and
considers the physical nature of the room behind the window, including; window transmittance,
and surface reflectivity.
This method of quantifying the availability of daylight within a room does, however, require the
internal layout to be known and is generally only used for establishing daylight provision in new
rooms. The BRE Guide sets out the following guidelines for the assessment of the ADF:
If a predominantly daylit appearance is required, then the ADF should be 5% or more if there is no
supplementary electric lighting, or 2% or more if supplementary electric lighting is provided. In
dwellings, the following minimum average daylight factors should be achieved: 1% in bedrooms,
1.5% in living rooms and 2% in kitchens.
4.3 Annual Probable Sunlight Hours
It is also possible to quantify the amount of sunlight available to a new development and the
recognised methodology for undertaking this analysis is the Annual Probable Sunlight Hours
(APSH) method.
The APSH tests is applied by calculating the number of probable sunlight hours that will be
received by each window. In general terms, it is considered that adequate levels of sunlight will
be available if the centre point of the window receives more than one quarter of APSH, including
at least 5% APSH in the winter months between 21st September and the 21st March.
It should also be noted that where rooms have windows on more than one elevation, it is
acceptable to sum the non-coincident sunlight hours to achieve a ‘room total’. This approach is
acknowledged by the BRE Guidelines and facilitates a greater understanding of the sunlight
received within a room by taking into account the fact that some windows will receive sunlight at
different times during the day.
5
5 Assessment Methodology
5.1 Method of Baseline Data Collation
The following data and information has been used to inform this study:
OS Mastermap mapping
Measured survey data (A.D. Horner Ltd, Worcestershire – March 2012)
Scheme drawings in AutoCAD format (BM3 Architects, Birmingham – June 2016)
Aerial photography (Google Maps and Bing)
5.2 Numerical Modelling
The numerical analysis used in this assessment has been undertaken using the Waldrum Tools
(Version 2.1) software package.
5.3 Calculation Assumptions
The following assumptions have been made when undertaking the analysis:
When assessing the ADF for internal rooms and in the absence of specific information,
the following parameters are assumed:
- Glazing type is assumed to be double glazing (Pilkington K Glass 4/16/4 Argon
filled) with a light transmittance value of 0.75 (value for double glazed unit not per
pane)
- Correction factor for frames and glazing bars = 0.8
- Where information from the designer is not available, the following values are used
to derive the Maintenance Factor applied to the transmittance values.
Location /
setting
Building type (Residential –
good maintenance)
Exposure
(normal)
Special
exposure
Maintenance
Factor
Urban 8% x 1.0 x 1.0 0.94
Rural / suburban 4% x 1.0 x 1.0 0.97
Table 5.1 – Parameters used for deriving Maintenance Factor (refer to BS 8206-2:2008
Tables A3, A4 and A5
6
The reflectance values used in the ADF analysis are as shown in Table 5.3 unless
specified otherwise by the designer.
Surface Value
Grass 10%
Pavement 20%
External brickwork 30%
External walls (concrete) 40%
External rendered wall (painted white) 60%
Internal walls (painted pale cream) 81%
Internal ceiling (painted white) 85%
Internal flooring 30%
Table 5.2 – Reflectance values used in ADF analysis
Where the internal arrangements and room uses have been estimated, it should be
noted that this has no bearing upon the tests for APSH because the reference point is
at the centre of the window being tested and windows have been accurately drawn
from the survey information. It is relevant to the daylight distribution assessment, but in
the absence of suitable plans, estimation is a conventional approach.
In areas where survey data has not been provided or needs to be supplemented with
additional information, photographs, OS mapping and brick counts have been used in
the process of building the 3D model of the surrounding and existing buildings.
When analysing the effect of the new building on the existing buildings, the shading
effect of the existing trees has been ignored. This is the recommended practice where
deciduous trees that do not form a dense belt or tree line are present (BRE Guidelines
– Appendix H). This is because daylight is at its scarcest and most valuable in the
winter when most trees will not be in leaf.
7
6 Daylight Provision Within New Rooms
6.1 Average Daylight Factor
Using the analytical techniques discussed in Sections 4 and 5, the Average Daylight Factor (ADF)
has been calculated for the habitable rooms within the proposed development. In accordance with
the guidance set out in both the BRE Guidelines and the BS 8206-2:2008 document, rooms that
have a dual use, i.e. an open plan kitchen and lounge, are assessed as a single room and
assessed against the room use with the highest daylighting requirement. For example, where a
room includes both living and kitchen spaces, then the higher daylighting requirement of the
kitchen is adopted as the threshold target.
However, where kitchens have a floor area that is less than 13m2 then it is appropriate to assume
that this is not a habitable room and the daylight tests need not be applied. The detailed model
outputs are included in the appendix of this report and from these it can be seen that all of the
habitable rooms within the proposed apartment building will receive well in excess of the minimum
ADF values prescribed for their associated room uses by the BRE Guidelines and the British
Standards.
Consequently, it is possible to conclude in accordance with the BRE Guidelines that all new
rooms will receive good levels of natural daylight and will therefore have reduced reliance on
supplementary electric lighting.
8
7 Sunlight Provision Within New Rooms
7.1 Annual Probable Sunlight Hours Assessment
The BRE Guidelines provide guidance in respect of sunlight quality for new developments stating:
“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 required 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 assessment criteria set out within the BRE document are discussed in Section 4.3 of this
report, but in general terms the overall objective sought by the guidelines is as follows: “In
general, a dwelling or non-domestic building which has a particular requirement 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 21st September and 21st March.
An observation from paragraph 5.3 of the BS 8206-2 is that with regards to sunlight duration, the
degree of satisfaction is related to the expectation of sunlight. Therefore, if a room is 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.
For the windows of the proposed new apartment rooms, the APSH test has been undertaken. The
detailed model outputs are included in Appendix A.4 of this report.
For new development, the BRE Guidance recommends that main windows to living rooms or
LKDs should face within 90 degrees of due south, to ensure that the dwelling will receive
reasonable amounts of sunlight throughout the day. Due to various site constraints it is not always
possible to ensure that all habitable rooms within a new development will have primary windows
facing south. Consequently, some secondary windows or windows serving rooms with lower
expectations of sunlight (such as kitchens or bedrooms) will have windows which face within 90
degrees of due north. The BRE guidance acknowledges this point.
When considering the sunlight provision to the proposed apartment block, it can be seen from the
APSH results in Appendix A.4 that each main living room or LKD will achieve well in excess of the
recommended APSH target values; for both the whole year APSH, and the winter period APSH.
Consequently, in accordance with the BRE Guidelines it is possible to conclude that all proposed
new apartments will be well sunlit. It is also evident that those rooms that have a lower
expectation of sunlight, i.e. bedrooms, still receive reasonable levels of direct sunlight throughout
most of the year.
9
In summary, all of the assessed apartments have been shown to meet or exceed the
recommended BRE target values for direct sunlight.
10
8 Conclusions
The detailed analysis undertaken as part of this assessment has examined the provision of
natural daylight and sunlight to the habitable rooms of the residential apartment building within the
development at the site of St Aldate’s vicarage, on Reservoir Road, in Gloucester.
Using detailed numerical modelling applications, the Average Daylight Factor (ADF) has been
quantified for all habitable rooms within the proposed apartment building. In line with the
assessment criteria prescribed by the BRE Guidelines, it has been shown that the provision of
natural daylight will exceed the minimum required threshold set out in both the BRE Guidelines
and the British Standard (BS) 8206-2:2008: ‘Lighting for buildings - Part 2: Code of practice for
daylighting’.
When considering the amount of sunlight that would be available to the main living rooms or
LKDs within the proposed apartment building, it has been possible to show that all main rooms
within each apartment will receive APSH values in excess of the BRE recommended target
values. Therefore, in accordance with the BRE Guidelines, it is possible to conclude that all
apartments within this residential building will benefit from the strong amenity benefits that are
derived from direct sunlight.
11
A Appendices
A.1 Appendix A.1 – Scheme Drawings
A.2 Appendix A.2 – Daylight Model Drawings
A.3 Appendix A.3 – Average Daylight Factor Calculations
A.4 Appendix A.4 – Annual Probable Sunlight Hours (APSH) Calculations
12
Appendix A.1 – Scheme Drawings
13
Appendix A.2 Daylight Model Drawings
905
Not to scale
C O N S U L T I N G L I I TM E D
Unit 6 - Barham Business Park
Elham Valley Road
Canterbury
Kent CT4 6DQ
Tel : 01227 833855
www.herringtonconsulting.co.uk
Legend
Existing Site Location Plan
10/06/1600
Rev Description Date
First issue
CLIENT
PROJECT
Reservoir Rd, Gloucester
SCALE PROJ REF
NMM
DRAWN BY
NMM
ANALYST
DWG REF.
0
REV.
N
S
3D Model - Existing & Proposed 3D Views
The Rooftop Housing Group
Existing Site View
Proposed Site View
905
Not to scale
C O N S U L T I N G L I I TM E D
Unit 6 - Barham Business Park
Elham Valley Road
Canterbury
Kent CT4 6DQ
Tel : 01227 833855
www.herringtonconsulting.co.uk
Legend
Existing Site Location Plan
10/06/1600
Rev Description Date
First issue
CLIENT
PROJECT
Reservoir Rd, Gloucester
SCALE PROJ REF
NMM
DRAWN BY
NMM
ANALYST
DWG REF.
0
REV.
N
S
3D Model - Existing & Proposed 3D Views
The Rooftop Housing Group
Existing Site View
Proposed Site View
C O N S U L T I N G L I I TM E D
Unit 6 - Barham Business Park
Elham Valley Road
Canterbury
Kent CT4 6DQ
Tel : 01227 833855
www.herringtonconsulting.co.uk
Legend
Proposed Location Plan
08/07/1600
Rev Description Date
First issue
CLIENT
PROJECT
SCALE PROJ REFDRAWN BYANALYST
DWG REF.
0
REV.
N
S
905
Not to scale
Reservoir Rd, Gloucester
NMMNMM
3D Model - Proposed Window & Room
The Rooftop Housing Group
Location Plans
Proposed Ground Floor Proposed First Floor Proposed Second Floor
14
Appendix A.3 Average Daylight Factor Calculations
Floor Room Room Use. Window Glass Transmittance
Glazed Area
Clear Sky Angle
Proposed
Room Surface
Area
Average Surface
Reflectance
Below Working
Plane Factor
ADFProposed
Req'dValue Pass/Fail
Ground R1 Bedroom W4‐L 0.78 0.93 86.27 58.49 0.65 0.15 0.28
W4‐U 0.78 2.05 84.52 58.49 0.65 1.00 4.01
4.29 1 PASS
Ground R2 Bedroom W3‐L 0.78 0.58 84.67 44.67 0.65 0.15 0.22
W3‐U 0.78 1.29 83.35 44.67 0.65 1.00 3.25
3.47 1 PASS
Ground R3 LKD W1 0.78 0.92 69.58 87.84 0.65 1.00 0.98
W2‐L 0.78 0.93 86.63 87.84 0.65 0.15 0.19
W2‐U 0.78 2.05 84.82 87.84 0.65 1.00 2.68
3.84 2 PASS
Ground R1 LKD W1 0.78 0.92 67.91 87.84 0.65 1.00 0.96
W2‐L 0.78 0.93 78.39 87.84 0.65 0.15 0.17
W2‐U 0.78 2.05 77.81 87.84 0.65 1.00 2.46
3.58 2 PASS
Ground R2 Bedroom W3‐L 0.78 0.58 77.12 44.67 0.65 0.15 0.20
W3‐U 0.78 1.29 76.88 44.67 0.65 1.00 2.99
3.20 1 PASS
Ground R3 Bedroom W4‐L 0.78 0.93 78.55 58.49 0.65 0.15 0.25
W4‐U 0.78 2.05 77.96 58.49 0.65 1.00 3.70
3.95 1 PASS
Ground R1 LD W1‐L 0.78 0.93 78.50 64.62 0.65 0.15 0.23
W1‐U 0.78 2.05 77.93 64.62 0.65 1.00 3.34
W2‐L 0.78 0.35 73.58 64.62 0.65 0.15 0.08
W2‐U 0.78 0.78 73.71 64.62 0.65 1.00 1.20
4.85 1.5 PASS
Ground R2 Bedroom W3‐L 0.78 0.93 85.78 63.67 0.65 0.15 0.25
W3‐U 0.78 2.05 84.12 63.67 0.65 1.00 3.66
W4‐L 0.78 0.35 79.60 63.67 0.65 0.15 0.09
W4‐U 0.78 0.78 78.90 63.67 0.65 1.00 1.30
5.31 1 PASS
Ground R1 Bedroom W1‐L 0.78 0.35 79.47 63.67 0.65 0.15 0.09
W1‐U 0.78 0.78 78.80 63.67 0.65 1.00 1.30
W2‐L 0.78 0.93 85.27 63.67 0.65 0.15 0.25
W2‐U 0.78 2.05 83.70 63.67 0.65 1.00 3.65
5.29 1 PASS
Ground R2 LD W3‐L 0.78 0.35 73.53 64.62 0.65 0.15 0.08
W3‐U 0.78 0.78 73.67 64.62 0.65 1.00 1.20
W4‐L 0.78 0.93 78.38 64.62 0.65 0.15 0.23
W4‐U 0.78 2.05 77.85 64.62 0.65 1.00 3.34
4.85 1.5 PASS
Ground R1 LKD W1‐L 0.78 0.58 76.92 101.50 0.65 0.15 0.09
W1‐U 0.78 1.29 76.77 101.50 0.65 1.00 1.32
W2‐L 0.78 0.93 78.27 101.50 0.65 0.15 0.15
W2‐U 0.78 2.05 77.80 101.50 0.65 1.00 2.13
W3‐L 0.78 0.93 80.55 101.50 0.65 0.15 0.15
W3‐U 0.78 2.05 79.82 101.50 0.65 1.00 2.18
6.01 2 PASS
Ground R2 Bedroom W4‐L 0.78 0.93 84.31 66.65 0.65 0.15 0.24
W4‐U 0.78 2.05 82.89 66.65 0.65 1.00 3.45
3.69 1 PASS
Plot 02
Plot 03
Plot 04
Plot 05
Project Name: Reservoir Road, Gloucester.Project No: 905Report Title: D&SArchitect: BM3Scheme Iteration No: 905_Model_Rev1Iteration Description: ADF (Daylight) Calculations to New Habitable Rooms in Proposed Apartment BuildingDate of Analysis: 06/07/2016Key drawings: See Appendix
Plot 01
Ground R3 Bedroom W5‐L 0.78 0.58 82.88 57.83 0.65 0.15 0.17
W5‐U 0.78 1.29 81.84 57.83 0.65 1.00 2.46
2.63 1 PASS
First R1 Bedroom W2‐L 0.78 0.58 85.13 44.67 0.65 0.15 0.23
W2‐U 0.78 1.29 83.80 44.67 0.65 1.00 3.26
3.49 1 PASS
First R2 LKD W3‐L 0.78 0.93 87.06 87.84 0.65 0.15 0.19
W3‐U 0.78 2.05 85.22 87.84 0.65 1.00 2.69
W4 0.78 0.92 74.99 87.84 0.65 1.00 1.06
3.93 2 PASS
First R3 Bedroom W1‐L 0.78 0.93 86.83 58.49 0.65 0.15 0.28
W1‐U 0.78 2.05 85.04 58.49 0.65 1.00 4.03
4.31 1 PASS
First R1 Bedroom W4‐L 0.78 0.93 81.62 58.49 0.65 0.15 0.26
W4‐U 0.78 2.05 80.89 58.49 0.65 1.00 3.84
4.10 1 PASS
First R2 Bedroom W3‐L 0.78 0.58 80.06 44.67 0.65 0.15 0.21
W3‐U 0.78 1.29 79.70 44.67 0.65 1.00 3.10
3.31 1 PASS
First R3 LKD W1 0.78 0.92 73.55 87.84 0.65 1.00 1.04
W2‐L 0.78 0.93 81.49 87.84 0.65 0.15 0.17
W2‐U 0.78 2.05 80.78 87.84 0.65 1.00 2.55
3.76 2 PASS
First R1 LD W1‐L 0.78 0.93 81.62 64.62 0.65 0.15 0.24
W1‐U 0.78 2.05 80.90 64.62 0.65 1.00 3.47
W2‐L 0.78 0.35 76.29 64.62 0.65 0.15 0.08
W2‐U 0.78 0.78 76.32 64.62 0.65 1.00 1.24
5.03 1.5 PASS
First R2 Bedroom W3‐L 0.78 0.93 86.52 63.67 0.65 0.15 0.26
W3‐U 0.78 2.05 84.80 63.67 0.65 1.00 3.69
W4‐L 0.78 0.35 80.30 63.67 0.65 0.15 0.09
W4‐U 0.78 0.78 79.58 63.67 0.65 1.00 1.31
5.35 1 PASS
First R1 Bedroom W1‐L 0.78 0.35 80.22 63.67 0.65 0.15 0.09
W1‐U 0.78 0.78 79.52 63.67 0.65 1.00 1.31
W2‐L 0.78 0.93 86.18 63.67 0.65 0.15 0.25
W2‐U 0.78 2.05 84.55 63.67 0.65 1.00 3.68
5.34 1 PASS
First R2 LD W3‐L 0.78 0.35 76.27 64.62 0.65 0.15 0.08
W3‐U 0.78 0.78 76.30 64.62 0.65 1.00 1.24
W4‐L 0.78 0.93 81.58 64.62 0.65 0.15 0.24
W4‐U 0.78 2.05 80.88 64.62 0.65 1.00 3.47
5.03 1.5 PASS
First R1 LKD W1‐L 0.78 0.58 80.07 101.50 0.65 0.15 0.09
W1‐U 0.78 1.29 79.75 101.50 0.65 1.00 1.37
W2‐L 0.78 0.93 81.63 101.50 0.65 0.15 0.15
W2‐U 0.78 2.05 80.94 101.50 0.65 1.00 2.21
W3‐L 0.78 0.93 83.36 101.50 0.65 0.15 0.15
W3‐U 0.78 2.05 82.34 101.50 0.65 1.00 2.25
6.23 2 PASS
First R2 Bedroom W4‐L 0.78 0.93 85.55 66.65 0.65 0.15 0.24
W4‐U 0.78 2.05 84.07 66.65 0.65 1.00 3.50
3.74 1 PASS
First R3 Bedroom W5‐L 0.78 0.58 83.98 57.83 0.65 0.15 0.17
W5‐U 0.78 1.29 82.90 57.83 0.65 1.00 2.49
2.66 1 PASS
Plot 07
Plot 08
Plot 09
Plot 10
Plot 06
Second R1 Bedroom W1‐L 0.78 1.07 79.89 73.22 0.65 0.15 0.24
W1‐U 0.78 1.91 80.14 73.22 0.65 1.00 2.82
3.06 1 PASS
Second R2 LKD W2‐L 0.78 0.99 81.90 100.13 0.65 0.15 0.16
W2‐U 0.78 2.05 83.45 100.13 0.65 1.00 2.31
W3‐L 0.78 0.62 82.96 100.13 0.65 0.15 0.10
W3‐U 0.78 1.29 82.50 100.13 0.65 1.00 1.43
4.01 2 PASS
Second R1 Bedroom W1‐L 0.78 0.99 84.63 60.70 0.65 0.15 0.28
W1‐U 0.78 2.05 83.78 60.70 0.65 1.00 3.83
4.11 1 PASS
Second R2 LKD W2‐L 0.78 0.99 84.63 99.38 0.65 0.15 0.17
W2‐U 0.78 2.05 83.80 99.38 0.65 1.00 2.34
2.51 2 PASS
Plot 12
Plot 11
15
Appendix A.4 APSH Calculations
Floor Room Room Use. Window Scenario Available Sunlight Hours Ref. Ref. Ref. Annual % Winter % Annual % Winter %
Plot 01
Ground R1 Bedroom W4 Proposed 18 2 18 2
Ground R2 Bedroom W3 Proposed 18 2 18 2
Ground R3 LKD W1 Proposed 59 17
Ground R3 LKD W2 Proposed 18 2 62 19
Plot 02
Ground R1 LKD W1 Proposed 62 20
Ground R1 LKD W2 Proposed 78 25 93 25
Ground R2 Bedroom W3 Proposed 78 25 78 25
Ground R3 Bedroom W4 Proposed 78 25 78 25
Plot 03
Ground R1 LD W1 Proposed 76 25
Ground R1 LD W2 Proposed 77 25 77 25
Ground R2 Bedroom W3 Proposed 18 2
Ground R2 Bedroom W4 Proposed 18 2 18 2
Plot 04
Ground R1 Bedroom W1 Proposed 18 2
Ground R1 Bedroom W2 Proposed 18 2 18 2
Ground R2 LD W3 Proposed 77 25
Ground R2 LD W4 Proposed 78 25 78 25
Plot 05
Ground R1 LKD W1 Proposed 75 25
Ground R1 LKD W2 Proposed 76 26
Ground R1 LKD W3 Proposed 31 5 76 26
Ground R2 Bedroom W4 Proposed 18 2 18 2
Ground R3 Bedroom W5 Proposed 18 2 18 2
Plot 06
First R1 Bedroom W2 Proposed 18 2 18 2
First R2 LKD W3 Proposed 18 2
First R2 LKD W4 Proposed 64 21 65 22
First R3 Bedroom W1 Proposed 18 2 18 2
Project Name: Reservoir Road, Gloucester.Project No: 905Report Title: D&SArchitect: BM3Scheme Iteration No: 905_Model_Rev1Iteration Description: APSH (Sunlight) Calculations to New Habitable Rooms in Proposed Apartment BuildingDate of Analysis: 06/07/2016Key drawings: See Appendix
Room Total
Plot 07
First R1 Bedroom W4 Proposed 79 26 79 26
First R2 Bedroom W3 Proposed 79 26 79 26
First R3 LKD W1 Proposed 64 21
First R3 LKD W2 Proposed 79 26 95 26
Plot 08
First R1 LD W1 Proposed 80 27
First R1 LD W2 Proposed 80 27 80 27
First R2 Bedroom W3 Proposed 18 2
First R2 Bedroom W4 Proposed 18 2 18 2
Plot 09
First R1 Bedroom W1 Proposed 18 2
First R1 Bedroom W2 Proposed 18 2 18 2
First R2 LD W3 Proposed 80 27
First R2 LD W4 Proposed 79 26 80 27
Plot 10
First R1 LKD W1 Proposed 77 27
First R1 LKD W2 Proposed 80 27
First R1 LKD W3 Proposed 32 5 81 27
First R2 Bedroom W4 Proposed 18 2 18 2
First R3 Bedroom W5 Proposed 18 2 18 2
Plot 11
Second R1 Bedroom W1 Proposed 18 2 18 2
Second R2 LKD W2 Proposed 76 25
Second R2 LKD W3 Proposed 81 28 81 28
Plot 12
Second R1 Bedroom W1 Proposed 81 28 81 28
Second R2 LKD W2 Proposed 81 28 81 28