daylight & sunlight assessments of a residential
TRANSCRIPT
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Daylight & Sunlight Assessments of a Residential Development at Ballymany Co. Kildare.
Applicant: Glan Developments Ltd. Date: May 2021
Prepared by John HealyMSc Environmental Design of Buildings
1 Rathmines Road Upper, Dublin 6, D06 Y5P5 tel 01 4965340 email [email protected] web digitaldimensions.ie Digital Dimensions Ltd trading as Digital Dimensions.
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1. Introduction
The proposed development consists of the demolition of existing structures on site and the construction of a development comprising the following:- • 204 no. dwellings including 98 No. houses and 106 no. maisonettes/apartments; • The 98 no. houses will comprise 2-2.5 storey semi-detached and terraced units to include:- • 28 no. 2-bedrooms houses; • 48 no. 3-bedroom houses; • 22 no. 4-bedroom houses; • The 106 no. maisonettes/apartments are located in 7 no. 3-storey blocks and include; • 23 no. 1-bedroom units; • 77 no. 2-bedroom units; • 6 no. 3-bedroom units; • A single storey crèche with 54 no. childcare spaces; • A c.335m long link street including the provision of a new right turning lane at the proposed junction on the R445 (Ballymany Road). • Car parking, bicycle stores and bin stores; • Improvement works to the foul sewer pump station; • Provision of additional surface water storage capacity and attenuation pond; • Landscaping, play areas, boundary treatments and public lighting; • All associated and ancillary site development works;
The calculations are based on the drawings prepared by JFOC Architects. The results find that there would be no impact on the neighbouring dwellings or amenities and there would be good quality daylight in the apartments analysed. The amenity space would meet the BRE criteria for Open Space and Gardens. The proposed development meets the recommendations of the BRE guidelines.
1.1 Executive SummaryThe report assesses the impact of the proposed development for Daylight and Sunlight on the neighbouring buildings and the quality of daylight and sunlight to within the proposed development. This analysis is carried out based on the drawings of JFOC Architects
Impact on adjacent propertiesThere will be minimal impact to the daylight and sunlight to the adjacent dwellings with no perceivable reduction in either daylight or sunlight. There will be minimal reduction in the sunlight to any of the adjacent amenity spaces. All areas assessed meet or exceed the recommendations of the BRE guidelines.
Assessment of the quality of the proposed development.All the proposed units within the development will exceed the recommendations of the BRE guidelines for quality of Daylight. The bedroom and living space layouts have been optimised for daylight and sunlight.
The results find that any impact on the adjacent residential structures would be minimal and imperceivable. There would be a good quality of daylight in the apartments analysed and the amenity areas would have sufficient sunlight to be bright and a pleasant spaces. The proposed development meets the recommendations of the BRE guidelines.
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2.0 Methodology
2.1 Notes on the use of BS 8206-2 2008 and BRE guidance document (2011) Site layout planning for daylight and sunlight.This Daylight and Sunlight Assessment demonstrates compliance with the BRE guide ‘Site Layout Planning for Daylight and Sunlight’ (2nd edition) and BS 8206-2: 2008 – ‘Lighting for Buildings – Part 2: Code of Practice for Daylighting’. This in accordance with the most relevant S.28 Ministerial Guidelines including Section 6.6 of the Sustainable Urban Housing Design Standards for New Apartments 2020, and Section 3.2 of the Urban Development and Building Heights Guidelines for Planning Authorities (2018).
We are aware of a new european standard, BS EN 17037:2018, however this is not currently enforced until such time as confirmed by a government circular, or as an update to the Development Plan or the relevant S. 28 Ministerial Guidelines.’
Sustainable Urban Housing: Design Standards for New Apartments, Guidelines for Planning Authorities 2020 directs Planning authorities to have regard to quantitative performance approaches to daylight provision outlined in guides like the BRE guide ‘Site Layout Planning for Daylight and Sunlight’ (2nd edition) or British Standard BS 8206-2: 2008 – ‘Lighting for Buildings – Part 2: Code of Practice for Daylighting’. The standards for daylight and sunlight access in buildings (and the methodologies for assessment of same) suggested in both of these documents have been referenced in this Sunlight and Daylight Access Analysis. Neither the British Standard nor the BRE Guide set out rigid standards or limits. The BRE Guide is preceded by the following very clear warning as to how the design advice contained therein should be used: “The advice given here is not mandatory and the guide should not be seen as an instrument of planning policy; its aims 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.” That the recommendations of the BRE Guide are not suitable for rigid application to all developments in all contexts is of particular importance in the context of national and local policies for the consolidation and densification of urban areas.
2.2 Daylight to the existing dwellingsThe site is analysed in plan, section and building use. Windows and amenity area are selected to test for impact from the proposed development.
BRE guidelines recommend that: “Loss of light to existing windows need not be assessed if the distance of each part of the new development from the existing window is three or more times its height above the centre of the existing window.”To check for this if part of a new building measured in a vertical section perpendicular to the main window wall of an existing building, from the centre of the lowest window, subtends an angle of more than 25º to the horizontal, then the diffuse light of the existing building may be adversely affected. If a window falls within a 45° angle both in plan and elevation with a new development in place then the window may be affected and should be assessed.
For loss of daylight and sunlight to existing buildings BRE guidance document (2011) “Site layout planning for daylight and sunlight” is used and BS8206 Part 2:2008 Lighting for Buildings, Code of Practice for Daylighting.
For loss of light the report recommends calculation of the Vertical Sky Component. This is the ratio of direct sky illuminance falling on the outside window, to the simultaneous horizontal illuminance under an unobstructed sky. The standard CIE Overcast Sky is used and the ratio is usually expressed as a percentage. The maximum value is just under 40% for a completely unobstructed vertical wall. The Vertical Sky Component on a window is a good measure of the amount of daylight entering it.
The BRE guidelines set out a two stage assessment for the Vertical Sky Component: a) Where the Vertical Sky Component at the centre of the existing window exceeds 27% with the new development in place then enough sky light should still be reached by the existing window.
b) Where the Vertical Sky Component with the new development in place is both less than 27% and less than 0.8 times its former value, then the area lit by the window is likely to appear more gloomy, and electric light will be needed more of the time.
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2.3 SunlightThe BRE guidelines recommend assessing the loss of sunlight to the main living rooms and conservatories if they have a window wall facing within 90° of due south. Kitchens and bedrooms are less important but care should be taken not to block too much sun. If the proposed development is fully north then sunlight need not be assessed.
The Annual Probable Sunlight Hours (APSH) is used to assess the quantity of sunlight for a given location. This is the total amount sunshine for a given location on an unobstructed horizontal surface taking cloud cover into account. To Assess the APSH and the Probable Sunlight Hours for winter statistical data from the Irish Meteorological Service is used. Table 1 shows the average sunlight hours for each month and the maximum possible without any cloud cover. This gives the factor of possible sunlight hours for each month.
Met Eireann Sunlight Hours Data Set 1981-2010Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total
Average Sunlight Hours/ Day 1:54 2:45 3:36 5:32 6:44 6:40 5:17 5:13 4:16 3:17 2:10 1:44Average Sunlight Hours/ Month 58:54 77:00 111:36 166:00 208:44 200:00 163:47 161:43 128:00 101:47 65:00 53:44 1496.25Total Available Sunlight Hours 252 265 358 412 488 485 496 451 375 320 250 248 4383Probable Sunlight Hours Ratio 23.37% 29.06% 31.17% 40.29% 42.77% 41.24% 33.02% 35.86% 34.13% 31.81% 26.00% 21.67% 34.14%
Table 1: Average monthly sunlight hours recorded at Dublin Airport - Data set 1981-2010
The BRE guidelines recommend that the centre of a window or 1.6m above ground for a door be assessed and receive at least 25% of the APSH and at least 5% during the period of 21st September to 21st March. If the available APSH is less than this then it should not be reduced below 0.8 times its former value or noticeable loss of sunlight may occur.
2.4 Sunlight to gardens and open spacesFor calculations of sunlight analysis it is general practice to use March 21 and the recommendations of the BRE guidance document (2011) “Site layout planning for daylight and sunlight”. P.J Littlefair, in relation to Gardens and open spaces section 3.3.17 state:
“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 receive 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 least two hours of sunlight on 21 March.”
2.5 Calculations of Trees & HedgesTrees are not usually included in the assessments of impact, unless specified otherwise. In relation to the effects of trees and hedges the BRE guidelines states,
“It is generally more difficult to calculate the effects of trees on daylight because of their irregular shape and because some light will generally penetrate through the crown. Where the effects of a new building on existing buildings nearby is being analysed, it is usual to ignore the effects of existing trees. This is because daylight is at its scarcest and most valuable in winter when most trees will not be in leaf.”
2.6 Daylight in the proposed development. The proposed project is analysed in plan & section, and building use. The rooms are assessed for Average Daylight Factor (ADF). Input values for the assessment of the Average Daylight Factor below in Table 2.
Surface ReflectancesElement Reflectance Transmissivity
Internal walls 84% 0% White Painted Walls
Internal ceiling 88% 0% White Painted Ceiling
Floor 52% 0% Light wood Flooring
External walls - proposed development 58.3% 0% Light yellow Brick
External walls - outside site 20% 0% CIBSE
External ground 20% 0% CIBSE
Glass 20.1 68.8 Tipple glazed clear glass
Table 2: Surface reflectances parameters for ADF calculationSensor Grid spacing 0.6m, inset 0.45m, minimum inset 0.3m, Work plane offset 0.85.
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2.6 Environmental impact assessmentThe BRE guidelines sets out criteria for classification for assessment of impact where a new development affects a number of existing buildings or open spaces. The guide does not give a specific range or percentages but sets out parameters set out below.
“Where the loss of skylight or sunlight fully meets the guidelines in this book, the impact is assessed as negligible or minor adverse. Where the loss of light is well within the guidelines, or only a small number of windows or limited area of open space lose light (within the guidelines), a classification of negligible impact is more appropriate. Where the loss of light is only just within the guidelines, and a larger number of windows or open space area are affected, a minor adverse impact would be more appropriate, especially if there is a particularly strong requirement for daylight and sunlight in the affected building or open space.
Where the loss of skylight or sunlight does not meet the guidelines in this book, the impact is assessed as minor, moderate or major adverse. Factors tending towards a minor adverse impact include: • only a small number of windows or limited area of open space are affected • the loss of light is only marginally outside the guidelines • an affected room has other sources of skylight or sunlight • the affected building or open space only has a low level requirement for skylight or sunlight • there are particular reasons why an alternative, less stringent, guideline should be applied.
Factors tending towards a major adverse impact include: • a large number of windows or large area of open space are affected • the loss of light is substantially outside the guidelines • all the windows in a particular property are affected • the affected indoor or outdoor spaces have a particularly strong requirement for skylight or sunlight, eg a living room in a dwelling or a children’s playground.
Beneficial impacts occur when there is a significant increase in the amount of skylight and sunlight reaching an existing building where it is required, or in the amount of sunlight reaching an open space.
Beneficial impacts should be worked out using the same principles as adverse impacts. Thus a tiny increase in light would be classified as a negligible impact, not a minor beneficial impact.”
A flexible approach should be taken when assessing the impact with daylight and sunlight being one of many factors that influence the environment when planning a new development.
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2. Daylight to adjacent buildings.The location is a greenfield site in Ballymany, Moorfield, Newbridge, County Kildare. The proposed buildings are of a height, density and distance typically found in housing estates, which usually deliver sufficient daylight and sunlight to amenity areas. The houses are 2 - 3 storeys and the apartment blocks are 3 storeys in height.
There is an existing housing estate, Ballymany Manor beside the proposed development. The closest houses have been considered for a potential impact on their daylight in this report.
Figure 1: Aerial view of site.
N
Ballymany Manor
Rathcurragh
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ABBREVIATIONS
(Site of)
136
135
795 794 793
104.0
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78 77
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108 109
110 111
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A
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Figure 2: Site plan of the proposed development with window walls to the adjacent dwellings identified at locations A - D
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3.1 Preliminary assessment The BRE guideline states that if part of a new building measured in a vertical section perpendicular to the main window wall of an existing building, from the centre of the lowest window, subtends an angle of more than 25º to the horizontal, then the diffuse light of the existing building may be adversely affected. If a window falls within a 45° angle both in plan and elevation with a new development in place then the window may be affected and should be assessed.
In Figure 2 below, the section planes perpendicular to the window wall of the properties, facing the proposed development, are indicated in blue. The planes at locations A - D extend and intersect the proposed development. Sections at these locations are plotted in Figure 3. The sections assess if the proposed development subtends the 25º obstructing angle and indicate if further detailed assessment is required.
85
72
66
80
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Figure 3: Sections perpendicular to window wall at locations indicated in Figure 2.
25o
25o
25o
25o
Section through window wall at location A
Section through window wall at location B
Section through window wall at location C
Section through window wall at location D
3.2 Discussion Location A through No.85 Ballymany Manor: The 25° angle will not be subtended by the proposed development, no further analysis is required.
Location B through No.72 Ballymany Manor: The 25° angle will not be subtended by the proposed development, no further analysis is required.
Location C through No.66 Ballymany Manor: The 25° angle will not be subtended by the proposed development, no further analysis is required.
Location D through No.80 Rathcurragh: The 25° angle will not be subtended by the proposed development, no further analysis is required.
3.3 ConclusionThe proposed buildings are of a height, density and distance typically found in housing estates, which usually deliver sufficient daylight and sunlight to amenity areas. The results from the sections through the window walls in Figure 3 indicate the proposed development would not subtend any of the windows to the existing dwellings and there will be no perceived loss of light to any of the existing houses. The proposed development meets the recommendations of the BRE guidelines.
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Duplex block LA
3-Storey
10 Units
Second Floor Plan
10
00
10
00
10
00
10
00
1000
10001000
HP
762
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LA07.2 LA08.2 LA09.2
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LA07.3 LA08.3 LA09.3
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LA10.3
3. Daylight to Proposed Development. The BRE guidelines recommend that the Average Daylight Factor (ADF) be assessed in habitable rooms of new developments. BS 8206-2 gives minimum values of ADF of 2% for kitchens and living rooms which include a kitchen, 1.5% for living rooms and 1% for bedrooms. An average daylight factor of 5% is a well daylit space. The factors that affect ADF are room depth, aspect, window size relative to floor area and closeness to an adjacent obstruction.
The buildings are of a height, density and distance typically found in housing estates, which usually afford good access to daylight. A representative sample of the duplex apartment blocks have been assessed for their average daylight factor. Room identifying plans and generated analysis are shown in Figures 4 - 8, the results are set out for each block in Tables 3 - 6 below.
Figure 4: Block LA - Ground, First & Second floor plans locating rooms assessed for ADF, together with false colour plans of ADF. Scale 0 - 5%
864
86
4
864
864
1200
750
Unobstructed
Area
HP
10
00
10
00
1000 1000
10
00
10
00
711
711
Bedroom 1
13.7m²
WC
4.7 m²
Store
1.7m²
Kitchen/
Living
38.3m²
36
00
4013
1000
18
20
2013
4013
95
40
L1
10
00
10
00
Store
.7m²
610
Bedroom 2
11.4m²
Store
1.8m²
39
20
2913
Store
3.3m²
Wardrobe
Wardrobe
610
Store
1.2m²
1200
750
Unobstructed
Area
HP
86
4
864
10
00
10
00
10
00
711
610
610
Kitchen/
Living
26.8m²
WC
4.1 m²
Bedroom 1
12.7m²
Store
2.5m²
Store
3.9m²
2850
46
15
1800
22
50
48
25
5813
1063
L2
1000
1000
610
Wardrobe
864
864
86
4
86
4
1000
1000
1000
864
1200
750
Unobstructed
Area
HP
71
1
610
610
610
610
Bedroom 2
11.8m²
Bedroom 1
13m²
Kitchen/
Living
35.5m²
Store
2.4 m²
Store
0.9 m²
Store
5.4m²WC
5.2m²
WC
2.8m²
3650
1000
18
00
2913
2913
95
0
4013 4012
3950
95
40
3212
L3
1000
10001000
32
50
Wa
rd
rob
e
Wa
rd
rob
e
1000
10
00
10
00
1200
750
Un
ob
stru
cte
d
Are
a
864
HP
864
864
1000 1000
711
Kitchen/
Living
25 m²
Bedroom 1
13.2m²
Store
2m²
Store
0.5m²
WC
Store
1m²
4750
54
90
18
00
2312
4012
33
00
1000
L4
1000
Wa
rd
rob
e
LA01.1
LA01.2
LA01.3
LA02.1
LA02.2
LA03.1
LA03.3
LA03.2
LA04.1
LA04.2
Second Floor
Ground Floor
First Floor
ADF
5%
0%
86
4
1000
10
00
10
00
1000
86
4
1000
1000
762
Living
30.6m²
Balcony
7m²
Store
2.4m²
Store
1.7m²
WC
1.8m²
4
4
3
1
2
L5
1
1
864
1000
1000
864
76
2
Living
30.6m²
Store
2.4m²
Store
1.7m²
WC
1.8m²
1000
Balcony
7m²
10
00
3
4
4
2
1
1
L6
1000
1
864
1000
1000 1000
864
1000
76
2
Living
30.6m²
Store
1.7m²
Store
2.4m²
Balcony
7m²
3
4
4
2
1
L7
1
1
864
1000
1000
864
76
2
Store
2.4m²
Store
1.7m²
WC
1.8m²
3
4
4
2
1
1000
Balcony
7m²
Living
30.6m²
1000
L6[b]
1000
1
1
86
4
1000
10001000
86
4
1000
762
Living
30.6m²
Store
1.7m²
Store
2.4m²
Balcony
7m²
3
4
4
2
1
L7
1
1
86
4
1000
10
00
1000
86
41000
762
Living
30.6m²
Store
2.4m²
Store
1.7m²
WC
1.8m²
4
4
3
1
2
Balcony
7m²
1000
1000
L5[b]
1
1
LA05.1 LA06.1
LA10.1LA07.1 LA08.1 LA09.1
N
DRAFT
10
Average Daylight Factor - Duplex Block LASpace ID Description Area m2 Sensor Count ADF Minimum
Recommended ADFMeets Criteria
LA01.1 Liv / Kit 38.3 112 2.43% 2% Y
LA01.2 Bed 13.0 35 3.11% 1% Y
LA01.3 Bed 11.4 30 2.70% 1% Y
LA02.1 Liv / Kit 31.2 73 3.20% 2% Y
LA02.2 Bed 11.7 35 1.91% 1% Y
LA03.1 Liv / Kit 36.5 88 2.81% 2% Y
LA03.2 Bed 11.8 30 1.81% 1% Y
LA03.3 Bed 13.0 35 1.26% 1% Y
LA04.1 Liv / Kit 26.1 72 2.55% 2% Y
LA04.2 Bed 13.2 35 2.45% 1% Y
LA05.1 Liv / Kit 30.6 82 5.58% 2% Y
LA05.2 Bed 12.0 32 4.57% 1% Y
LA05.3 Bed 13.3 40 4.63% 1% Y
LA06.1 Liv / Kit 30.6 82 5.27% 2% Y
LA06.2 Bed 12.0 32 4.64% 1% Y
LA06.3 Bed 13.3 40 1.90% 1% Y
LA07.1 Liv / Kit 30.6 82 6.00% 2% Y
LA07.2 Bed 12.0 32 5.30% 1% Y
LA07.3 Bed 13.3 40 1.94% 1% Y
LA08.1 Liv / Kit 30.6 82 3.71% 2% Y
LA08.2 Bed 12.0 32 2.73% 1% Y
LA08.3 Bed 13.3 40 2.29% 1% Y
LA09.1 Liv / Kit 30.6 82 3.77% 2% Y
LA09.2 Bed 13.3 40 2.31% 1% Y
LA09.3 Bed 12.0 32 2.69% 1% Y
LA10.1 Liv / Kit 30.6 82 3.62% 2% Y
LA10.2 Bed 13.3 40 2.36% 1% Y
LA10.3 Bed 12.0 32 2.64% 1% Y
Table 3: Duplex Block LA - Average Daylight Factor of habitable rooms on the ground, first & second floors.
DRAFT
11
86
4
10
00
1000
86
4
76
2
1000
10
00
10
00
86
4
1000
1000 1000
86
4
1000
76
2
86
4
1000
1000 1000
86
4
1000
76
2
86
4
1000
10001000
86
4
1000
76
2
86
4
1000
1000 1000
86
4
1000
76
2
86
4
1000
10
00
1000
86
4
1000
76
2
10
00
1000
1000
1000 1000
76
2
1000
1025
86
4
1000
86
4
76
2
1000
10
00
10
00
10
00
86
4
1000
10
00
10
00
1000
86
4
1000
1000
76
2
86
4
10
00
1000
86
4
76
2
1000
10
00
10
00
86
4
10
00
1000
86
4
76
2
1000
10
00
10
00
86
4
1000
10001000
86
4
1000
76
2
86
4
1000
10001000
86
4
1000
76
2
Ground Floor First / Second Floor
L1 L5
L2 L5 [b]
L3 L6
L11 L6 [b]
L12 L7
L13 L14
L15
L10.1 L11.1
L13.1 L14.1 L15.1 L16.1 L17.1 L18.1 L19.1 L20.1
L21.1 L22.1
L12.1
L11/
12
3 3
11
22
864
86
4
864
864
1200
750
Unobstructed
Area
HP
10
00
10
00
1000 1000
10
00
10
00
711
711
Bedroom 1
13.7m²
WC
4.7 m²
Store
1.7m²
Kitchen/
Living
38.3m²
4
4
1
2
2
4
10
L1
10
00
10
00
Store
.7m²
610
Bedroom 2
11.4m²
Store
1.8m²
4
3
Store
3.3m²
Wardrobe
Wardrobe
610
Store
1.2m²
1200
750
Unobstructed
Area
HP
86
4
864
10
00
10
00
10
00
711
610
610
Kitchen/
Living
26.8m²
WC
4.1 m²
Bedroom 1
12.7m²
Store
2.5m²
Store
3.9m²
35
2
2
5
6
1
L2
1000
1000
610
Wardrobe
864
864
86
4
86
4
1000
1000
1000
864
1200
750
Unobstructed
Area
HP
71
1
610
610
610
610
Bedroom 2
11.8m²
Bedroom 1
13m²
Kitchen/
Living
35.5m²
Store
2.4 m²
Store
0.9 m²
Store
5.4m²WC
5.2m²
WC
2.8m²
4
1
2
3
31
4 4
4
10
3
L3
1000
10001000
3
Wa
rd
rob
e
Wa
rd
rob
e
86
4
864
86
4
864
1200
750
Unobstructed
Area
HP
1000
1000
10001000
1000
1000
711
71
1
Bedroom 1
13.7m²
WC
4.7 m²
Store
1.7m²
Kitchen/
Living
38.3m²
4
4
1
2
2
4
10
L1
1000
1000
Store
.7m²
61
0
Bedroom 2
11.4m²
Store
1.8m²
4
3
Store
3.3m²
Wardrobe
Wardrobe
61
0
Store
1.2m²
1200
750
Un
ob
str
ucte
d
Are
a
HP
864
864
1000
1000
1000
711
61
06
10
Kitchen/
Living
26.8m²
WC
4.1 m²
Bedroom 1
12.7m²
Store
2.5m²
Store
3.9m²
3
5
2
2
5
6
1
L2
1000
1000
61
0
Wardrobe
864
86
4
864
864
1000
1000
1000
864
1200
750
Unobstructed
Area
HP711
61
06
10
61
06
10
Bedroom 2
11.8m²
Bedroom 1
13m²
Kitchen/
Living
35.5m²
Store
2.4 m²
Store
0.9 m²
Store
5.4m² WC
5.2m²
WC
2.8m²
4
1
2
3
3
1
44
4
10
3
L3
1000
1000 1000
3
Wa
rd
rob
e
Wa
rd
rob
e
1000
1000
1200
750
Un
ob
stru
cte
d
Are
a
864
HP
864
864
1000
711
Bedroom 1
15.7m²
WC
4.7m²
5
5
2
2
4
4
L11
Store
4.6m²
Store
.5m²
Kitchen/
Living
26.1m²
Wardrobe
61
06
10
1000
1200
750
Unobstructed
Area
86
4
HP
864
864
1000
1000
71
1
Kitchen/
Living
26.1m²
WC
6.1m²
Store
2.7m²
Store
0.5m²
Bedroom 1
16.1m²
5
5
2
3
5
3
L12
Wa
rd
rob
e
L7/
L6[b]
L7/
L7
L7/
L7
L7 [b]/
L15
L5/
L6
L5[b]/
L6[c]
L14
def
C
B
c
b
A a
51
3711 11
58
11
Secure Bike
Store
Secure Bike
Store
Secure Bike
Store
Secure Bike
Store
Secure Bike
Store
Secure Bike
Store
1000
1200
750
Unobstructed
Area
86
4
HP
864
864
1000
71
1
Kitchen/
Living
25.4m²
Store
0.7m²
Store
2m²
Store
0.5m²
WC
4.7m²
5
5
2
2
L13
Bedroom 1
13.2m² 3
4Wa
rd
rob
e
L3 Private Space
23.9m²
L1
Private
Space
12.3m²
L2 Private Space
7.2m²
L2 Private Space
7.4m²
L11 Private Space
12.9m²
L12 Private Space
9.2m²
L13 Private Space
8.7m²
L3 Private Space
15m²
L1 Private Space
12.1m²
L3 Private Space
9.5m²L3 Private Space
7.7m²
Secure Bike
Store
Secure Bike
Store
L01.1
L01.2
L01.3
L02.1
L02.2
L03.1
L03.3
L03.2
L04.1
L04.2 L05.2
L05.1 L06.1
L06.2
L07.1
L07.3
L07.2
L08.1
L08.2
L09.1
L09.2
L09.3
Ground Floor
First Floor
Ground Floor
First Floor
Figure 5: Duplex Block LC2 - Ground & First floor plans locating rooms assessed for ADF, together with false colour plans of ADF. Scale 0 - 5%
ADF
5%
0%
ADF
5%
0%
DRAFT
12
Average Daylight Factor - Duplex Block LC2Space ID Description Area m2 Sensor Count ADF Minimum
Recommended ADFMeets Criteria
LC2 01.1 Liv / Kit 38.3 112 2.54% 2% Y
LC2 01.2 Bed 13.0 35 3.53% 1% Y
LC2 01.3 Bed 11.4 30 2.71% 1% Y
LC2 02.1 Liv / Kit 31.2 73 3.16% 2% Y
LC2 02.2 Bed 11.7 35 1.96% 1% Y
LC2 03.1 Liv / Kit 36.5 88 2.76% 2% Y
LC2 03.2 Bed 11.8 30 1.88% 1% Y
LC2 03.3 Bed 13.0 35 1.28% 1% Y
LC2 04.1 Liv / Kit 26.1 72 2.72% 2% Y
LC2 04.2 Bed 13.2 35 1.26% 1% Y
LC2 05.1 Liv / Kit 26.1 72 2.70% 2% Y
LC2 05.2 Bed 15.7 40 1.11% 1% Y
LC2 06.1 Liv / Kit 26.1 72 2.64% 2% Y
LC2 06.2 Bed 13.2 35 1.28% 1% Y
LC2 07.1 Liv / Kit 36.5 88 2.52% 2% Y
LC2 07.2 Bed 11.8 30 1.89% 1% Y
LC2 07.3 Bed 13.0 35 1.25% 1% Y
LC2 08.1 Liv / Kit 31.2 73 3.68% 2% Y
LC2 08.2 Bed 11.7 35 1.89% 1% Y
LC2 09.1 Liv / Kit 38.3 112 2.78% 2% Y
LC2 09.2 Bed 13.0 35 4.20% 1% Y
LC2 09.3 Bed 11.4 30 2.56% 1% Y
10
00
10
00
10
00
10
00
1000
10001000
HP
762
76
2
762 762
71
1
10
00
10
00
10
00
10
00
10001000
HP
762
76
2
762 762
71
1
1000
1000
HP
762
76
2
762762
71
1
1000
1000
HP
762
76
2
762 762
71
1
1000
1000
HP
762
76
2
762762
71
1
1000
1000
HP
762
76
2
762 762
71
1
1000
1000
HP
762
76
2
762762
71
1
10
00
10
00
10
00
10
00
10001000
HP
762
76
2
762 762
71
1
10
00
10
00
10
00
10
00
10001000
HP
762
76
2
762762
71
1
1000
1000
HP
762
76
2
762 762
71
1
1000
1000
HP
762
76
2
762 762
71
1
10
00
10
00
10
00
10
00
1000
10001000
HP
762
76
2
762762
71
1
10
00
10
00
10
00
10
00
10001000
HP
762
76
2762762
71
1
Ground Floor First / Second Floor
L1 L5
L2 L5 [b]
L3 L6
L11 L6 [b]
L12 L7
L13 L14
L15
L10.2 L11.2
L13.2 L14.2 L15.2 L16.2 L17.2 L18.2 L19.2 L20.2L12.2
L21.2 L22.2
L10.3 L11.3L21.3 L22.3
L13.3 L14.3 L15.3 L16.3 L17.3 L18.3 L19.3 L20.3L12.3
Second Floor
Second Floor
Figure 6: Block LC2 - Second floor plans locating rooms assessed for ADF, together with false colour plans of ADF. Scale 0 - 5%
ADF
5%
0%
DRAFT
13
Average Daylight Factor - Duplex Block LC2Space ID Description Area m2 Sensor Count ADF Minimum
Recommended ADFMeets Criteria
LC2 10.1 Liv / Kit 30.6 82 5.93% 2% Y
LC2 10.2 Bed 12.0 32 4.83% 1% Y
LC2 10.3 Bed 13.3 40 4.75% 1% Y
LC2 11.1 Liv / Kit 30.6 82 5.51% 2% Y
LC2 11.2 Bed 12.0 32 4.62% 1% Y
LC2 11.3 Bed 13.3 40 1.89% 1% Y
LC2 12.1 Liv / Kit 30.6 82 5.47% 2% Y
LC2 12.2 Bed 12.0 32 4.69% 1% Y
LC2 12.3 Bed 13.3 40 1.92% 1% Y
LC2 13.1 Liv / Kit 30.6 82 6.07% 2% Y
LC2 13.2 Bed 13.3 40 1.96% 1% Y
LC2 13.3 Bed 12.0 32 5.43% 1% Y
LC2 14.1 Liv / Kit 30.6 82 3.77% 2% Y
LC2 14.2 Bed 13.3 40 2.32% 1% Y
LC2 14.3 Bed 12.0 32 2.67% 1% Y
LC2 15.1 Liv / Kit 30.6 82 3.86% 2% Y
LC2 15.2 Bed 13.3 40 2.35% 1% Y
LC2 15.3 Bed 12.0 32 2.71% 1% Y
LC2 16.1 Liv / Kit 30.6 82 4.00% 2% Y
LC2 16.2 Bed 13.3 40 2.35% 1% Y
LC2 16.3 Bed 12.0 32 2.69% 1% Y
LC2 17.1 Liv / Kit 37.7 98 3.46% 2% Y
LC2 17.2 Bed 13.3 40 2.42% 1% Y
LC2 17.3 Bed 12.0 32 2.70% 1% Y
LC2 18.1 Liv / Kit 30.6 82 3.95% 2% Y
LC2 18.2 Bed 13.3 40 2.38% 1% Y
LC2 18.3 Bed 12.0 32 2.67% 1% Y
LC2 19.1 Liv / Kit 30.6 82 3.80% 2% Y
LC2 19.2 Bed 13.3 40 2.30% 1% Y
LC2 19.3 Bed 12.0 32 2.71% 1% Y
LC2 20.1 Liv / Kit 30.6 82 3.79% 2% Y
LC2 20.2 Bed 13.3 40 2.24% 1% Y
LC2 20.3 Bed 12.0 32 2.70% 1% Y
LC2 21.1 Bed 13.3 40 1.95% 1% Y
LC2 21.1 Liv / Kit 30.6 82 5.96% 2% Y
LC2 21.3 Bed 12.0 32 4.88% 1% Y
LC2 22.1 Liv / Kit 30.6 82 5.84% 2% Y
LC2 22.2 Bed 12.0 32 4.69% 1% Y
LC2 22.3 Bed 13.3 40 4.69% 1% Y
Table 4: Duplex Block LC2 - Average Daylight Factor of habitable rooms on the ground, first & second floors.
DRAFT
14
Second Floor
Figure 7: Duplex Block LD - Ground, First & Second floor plans locating rooms assessed for ADF, together with false colour plans of ADF. Scale 0 - 5%
1000
864
864
864
1200
750
Unobstructed
Area
1000
10001000
610
HP711
WC
4.7m²
Kitchen/
Living
23m²
Store
3.8m²
Store
1.2m²
4012
57
15
17
50
2038
L16
1000
10
00
Bedroom 1
13.5m²
4750
28
50
Wa
rd
rob
e
86
4
864
864
1200
750
Unobstructed
Area
10
00
1000 1000
HP
71
1
WC
4.7m²
Kitchen/
Living
23m²
61
0
Store
1.2m²
Store
1.9m²
4012
57
15
2038
1000
4750
28
50
17
50 L17
10
00
1000
Bed
13.5m²
Wa
rd
rob
e
1200
750
Unobstructed
Area
HP
86
4
864
10
00
10
00
10
00
711
610
610
Kitchen/
Living
26.8m²
WC
4.1 m²
Bedroom 1
12.7m²
Store
2.5m²
Store
3.9m²
2850
46
15
1800
22
50
48
25
5813
1063
L2
1000
1000
610
Wardrobe
864
864
86
4
86
4
1000
1000
1000
864
1200
750
Unobstructed
Area
HP
71
1
610
610
610
610
Bedroom 2
11.8m²
Bedroom 1
13m²
Kitchen/
Living
35.5m²
Store
2.4 m²
Store
0.9 m²
Store
5.4m²WC
5.2m²
WC
2.8m²
3650
1000
18
00
2913
2913
95
0
4013 4012
3950
95
40
3212
L3
1000
10001000
32
50
Wa
rd
rob
e
Wa
rd
rob
e
864
864
86
4
86
4
1000
1000
1000
864
1200
750
Unobstructed
Area
HP
71
1
610
610
610
610
Bedroom 2
11.8m²
Bedroom 1
13m²
Kitchen/
Living
35.5m²
Store
2.4 m²
Store
0.9 m²
Store
5.4m²WC
5.2m²
WC
2.8m²
3650
1000
18
00
2913
2913
95
0
4013 4012
3950
95
40
3212
L3
1000
10001000
32
50
Wa
rd
rob
e
Wa
rd
rob
e
1000
10
00
10
00
1200
750
Un
ob
str
ucte
d
Are
a
864
HP
864
864
1000 1000
711
Kitchen/
Living
25 m²
Bedroom 1
13.2m²
Store
2m²
Store
0.5m²
WC
Store
1m²
4750
54
90
18
00
2312
4012
33
00
1000
L4
1000
Wa
rd
rob
e
LD02.1LD01.1
LD01.2
LD03.1
LD03.2
LD04.1
LD04.3
LD04.2
LD02.2
LD05.1
LD05.3
LD05.2
LD06.1
LD06.2
Second Floor
Ground Floor
First Floor
86
4
1000
10
00
1000
86
4
1000
76
2
Living
30.6m²
Store
2.4m²
Store
1.7m²
WC
1.8m²
4012
39
40
2650
90
0
2000
Balcony
7m²
10
00
1000
L5[b]14
00
1262
86
4
10
00
1000
86
4
76
2
Living
30.6m²
Store
2.4m²
Store
1.7m²
WC
1.8m²
1000
Balcony
7m²
10
00
2650
39
40
4012
2000
90
0
2650
1262
L6
10
00
14
00
86
4
1000
1000 1000
86
4
1000
76
2
Living
30.6m²
Store
1.7m²
Store
2.4m²
Balcony
7m²
2650
39
40
4012
2000
90
0
L7
14
00
1262
86
4
1000
10001000
86
4
1000
76
2
Living
30.6m²
Store
1.7m²
Store
2.4m²
Balcony
7m²
2650
39
40
4012
2000
90
0
L7
14
00
1262
86
4
1000
10001000
86
4
1000
76
2
Living
30.6m²
Store
1.7m²
Store
2.4m²
Balcony
7m²
2650
39
40
4012
2000
90
0
L7
14
00
1262
86
4
1000
86
4
76
2
Living
30.6m²
Store
2.4m²
Store
1.7m²
WC
1.8m²
1000
10
00
10
00
Balcony
9.7m²
4012
95
40
2650
2000
90
0
39
40
L15
10
00 14
00
1263
86
4
1000
10
00
1000
86
4
1000
76
2
Living
30.6m²
Store
2.4m²
Store
1.7m²
WC
1.8m²
4012
39
40
2650
90
0
2000
Balcony
7m²
10
00
1000
L5[b]
14
00
1262
86
4
1000
1000 1000
86
4
1000
76
2
Living
30.6m²
Store
1.7m²
Store
2.4m²
Balcony
7m²
2650
39
40
4012
2000
90
0
L7
14
00
1262
LD07.1 LD08.1
LD09.1 LD10.1 LD11.1 LD12.1 LD13.1 LD14.1
10
00
10
00
10
00
10
00
1000
10001000
HP
762
76
2
762762
71
1
Bed
13.3m²
Bed
12m²
WC
2. 4m²
WC
3. 8m²Store
1.2m²
Store
0.8m²
4750
28
00
1800
94
0
20
31
1800
1113
28
00
4750
21
00
92
0
10
00
10
00
10
00
10
00
10001000
HP
762
76
2
762 762
71
1
Bed
13.3m²
Bed
12m²
WC
2. 4m²
WC
3. 8m²Store
1.2m²
Store
0.8m²
27
96
4750
1789
1113
21
00
1800
28
00
4750
21
00
94
0
92
0
900
1000
1000
HP
762
76
2
762 762
71
1
Bed
13.3m²
Bed
12m²
WC
2. 4m²
WC
3. 8m²
Store
1.2m²
Store
0.8m²
28
00
4750
11131800
21
00
1800
4750
28
00
1113
92
0
900
1000
1000
HP
762
76
2
762762
71
1
Bed
13.3m²
Bed
12m²
WC
2. 4m²
WC
3. 8m²
Store
1.2m²
Store
0.8m²
28
00
4750
11131800
21
00
1800
4750
28
00
1113
92
0
900
10
00
10
00
10
00
10
00
10001000
HP
762
76
2
762762
71
1
Bed
13.3m²
Bed
12m²
WC
2.4m²
WC
3.8m²
Store
1.2m²
Store
0.8m²
28
00
4750
21
00
21
00
1800
4750
28
00
11131800
94
0
92
0
900
1000
1000
HP
762
76
2
762 762
71
1
Bed
13.3m²
Bed
12m²
WC
2. 4m²
WC
3. 8m²
Store
1.2m²
Store
0.8m²
28
00
4750
11131800
21
00
1800
4750
28
00
1113
92
0
900
1000
1000
HP
762
76
2
762762
71
1
Bed
13.3m²
Bed
12m²
WC
2. 4m²
WC
3. 8m²
Store
1.2m²
Store
0.8m²
28
00
4750
11131800
21
00
1800
4750
28
00
1113
92
0
900
10
00
10
00
10
00
10
00
1000
10001000
HP
762
76
2
762 762
71
1
Bed
13.3m²
Bed
12m²
WC
2. 4m²
WC
3. 8m²
Store
1.2m²
Store
0.8m²
4750
28
00
180094
0
20
31
1800
1113
28
00
4750
21
00
92
0
LD07.2 LD08.2
LD09.2 LD10.2 LD11.2 LD12.2 LD13.2 LD14.2
LD07.3 LD08.3
LD09.3 LD10.3 LD11.3 LD12.3 LD13.3 LD14.3
N
ADF
5%
0%
DRAFT
15
Average Daylight Factor - Block LDSpace ID Description Area m2 Sensor Count ADF Minimum
Recommended ADFMeets Criteria
LD01.1 Liv / Kit 22.9 63 4.29% 2% Y
LD01.2 Bed 11.4 30 4.75% 1% Y
LD02.1 Liv / Kit 22.9 63 3.99% 2% Y
LD02.2 Bed 13.5 40 1.62% 1% Y
LD03.1 Liv / Kit 31.2 73 3.08% 2% Y
LD03.2 Bed 11.7 35 1.94% 1% Y
LD04.1 Liv / Kit 36.5 88 2.19% 2% Y
LD04.2 Bed 11.8 30 1.82% 1% Y
LD04.3 Bed 13.0 35 1.12% 1% Y
LD05.1 Liv / Kit 36.9 99 2.11% 2% Y
LD05.2 Bed 11.8 30 2.43% 1% Y
LD05.3 Bed 13.0 35 1.13% 1% Y
LD06.1 Liv / Kit 26.1 72 4.16% 2% Y
LD06.2 Bed 13.2 35 3.99% 1% Y
LD07.1 Liv / Kit 30.6 82 5.93% 2% Y
LD07.2 Bed 13.3 40 4.70% 1% Y
LD07.2 Bed 12.0 32 4.91% 1% Y
LD08.1 Liv / Kit 30.6 82 5.80% 2% Y
LD08.2 Bed 12.0 32 4.83% 1% Y
LD08.3 Bed 13.3 40 1.96% 1% Y
LD09.1 Liv / Kit 30.6 82 6.00% 2% Y
LD09.2 Bed 13.3 40 2.04% 1% Y
LD09.3 Bed 12.0 32 5.33% 1% Y
LD10.1 Liv / Kit 30.6 82 3.71% 2% Y
LD10.2 Bed 13.3 40 2.38% 1% Y
LD10.3 Bed 12.0 32 2.60% 1% Y
LD11.1 Liv / Kit 30.6 82 3.72% 2% Y
LD11.2 Bed 13.3 40 2.42% 1% Y
LD11.3 Bed 12.0 32 2.60% 1% Y
LD12.1 Liv / Kit 30.6 82 3.81% 2% Y
LD12.2 Bed 13.3 40 2.43% 1% Y
LD12.3 Bed 12.0 32 2.56% 1% Y
LD13.1 Liv / Kit 30.6 82 3.76% 2% Y
LD13.2 Bed 13.3 40 2.44% 1% Y
LD13.3 Bed 12.0 32 2.61% 1% Y
LD14.1 Liv / Kit 30.6 82 6.13% 2% Y
LD14.2 Bed 13.3 40 2.42% 1% Y
LD14.3 Bed 12.0 32 2.60% 1% Y
Table 5: Block LD - Average Daylight Factor of habitable rooms on the ground, first & second floors.
DRAFT
16
1135
1025
1135
1135
76
2
711
762
762
HP
762
Bed
13m²
WC
2.7m²
Bed
11.4m²
Bed
7.5m²
WC
4m²
Store
0.8m²
Store
0.8
m²
4
3
3
2
3
4
2
2
2
2
1
1
1
1
1135
1025
1135
1135
762
71
1
76
2
762
HP
76
2
Bed
13m
²
WC
2.7
m²
Bed
11.4
m²
Bed
7.5
m²
WC
4m
²
Sto
re
0.8
m²
Store
0.8m²
4
3
3
2
3
4
2
2 2
2
1
1
1
1
1135
1025
1135
1135
762
71
1
76
2
762
HP
76
2
Bed
13m
²
WC
2.7
m²
Bed
11.4
m²
Bed
7.5
m²
WC
4m
²
Sto
re
0.8
m²
Store
0.8m²
4
3
3
2
3
4
2
2 2
2
1
1
1
1
1135
1135 1135
11351135
Bed
13.5m²
Bed
13.8m²
Bed
11.4m²
711
HP
71
1
711S
tore
1.7
m²
Store
0.8m²
Store
1.7m²
711
Sto
re0.9
m²
Store
2.3m²
660
Store
0.9
m²
71
1
WC
5.3m²
Ensuite
4.4m²
1
1
1
1
2
23
4
1
3
3
44
4
3
11
35
11
35
11
35
11
35
76
2
762
71
1
10
25
1025
WC
4.8m²
Bed
12.1
m²
Sto
re
1.2
m²
2970
4065
1585
2385
2025
HP
76
2
Bed
13.2
m²
711
Store
1.1m²
WC
3.8
m²
3350
3950
1650
2300
1000
1200
1135
1135
1025
1225
10
25
11
35
11
35
1135
76
2
711
762
76
2
HP
762
Bed
13m²
WC
2.7m²
Bed
11.4m²
Bed
7.5m²
WC
4m²
Store
0.8m²
Store
0.8
m²
35
50
3050
29
00
2370
3350
37
50
15
65
1720
20
50
1945
10
90
10
00
0
11
35
11
35
11
35
11
35
11
35
Bed
13.5
m²
Bed
13.8
m²
Bed
11.4
m²
711
HP
711
711
Sto
re1.7
m²
Sto
re
0.8
m²
Sto
re
1.7
m²
711
Sto
re0.9
m²
Sto
re
2.3
m²
66
0
Store
0.9m²
711
WC
5.3
m²
En
su
ite
4.4
m²
950
1000
1100
1000
2350
1958
2800
4290
1409
3150
3350
3540
3577
4060
3350
A A
B
B
CC
DD
M08.2
M09.2
M10.2
M11.2
M12.2
M13.3
M14.2
M08.3
M09.3
M09.4
M10.3
M10.4
M11.3
M11.4
M12.3
M12.4 M13.2
M13.4
M14.3
M14.4
1135
1200
750
Unobstructed
Area
86
4
864
10001000
11
35
1200
750
Un
ob
stru
cte
d
Are
a
864
86
4
10
00
10
00
11
35
1200
750
Un
ob
stru
cte
d
Are
a
864
86
4
10
00
10
00
11
35
1200
750
Unobstructed
Area
610
11
35
86
4
864
10
00
10
00
1200
750
Un
ob
stru
cte
d
Are
a
86
4
11
35
11
35
86
4
10
00
1025
1135
1200
750
Unobstructed
Area
86
4
864
10001000
10
25
11
35
11
35
1135
1200
750
Un
ob
str
ucte
d
Are
a
610
1135
864
864
10001000
A A
B
B CC
DD
M08.1
M09.1
M10.1
M11.1
M12.1 M13.1 M14.1
Figure 8: Block M - Ground, First & Second floor plans locating rooms assessed for ADF, together with false colour plans of ADF. Scale 0 - 5%
1135
1000
86
4
864
86
4
864
76
2
1200
750
Un
ob
str
ucte
d
Are
a
1135
1135
1000
86
4
864
1200
750
Un
ob
str
ucte
d
Are
a
86
4
86
4
11
35
10
00
864
86
4
864
86
4
762
1200 750
Unobstructed
Area
11
35
10
00
864
86
4
864
86
4
762
1200 750
Unobstructed
Area
1200
750
Unobstructed
Area
864
86
4
1135
1135
86
4
11
35
71
1
10
00
1135
1000
86
4
864
86
4
864
76
2
1200
750
Un
ob
str
ucte
d
Are
a
11
35
11
35
11
35
11
35
10
00
864
86
4
1200
750
Unobstructed
Area
864
864
A A
B
B
CC
DD
M01.1
M02.1
M03.1
M04.1
M05.1
M06.1 M07.1M04.2
M04.3
M03.2
M03.3
M02.2
M02.3
M01.2
M07.2M07.3
M06.2
M06.3
Second Floor
Ground Floor
First Floor
ADF
5%
0%
N
DRAFT
17
Average Daylight Factor - Block MSpace ID Description Area m2 Sensor Count ADF Minimum
Recommended ADFMeets Criteria
Block LA
M01.1 Liv / Kit 31.2 78 5.65% 2% Y
M01.2 Bed 14.4 41 4.32% 1% Y
M02.1 Liv / Kit 31.8 82 4.44% 2% Y
M02.2 Bed 13.4 36 4.59% 1% Y
M02.3 Bed 11.5 35 3.18% 1% Y
M03.1 Liv / Kit 31.8 82 4.42% 2% Y
M03.2 Bed 13.4 36 4.56% 1% Y
M03.3 Bed 11.5 35 3.20% 1% Y
M04.1 Liv / Kit 42.2 99 3.92% 2% Y
M04.2 Bed 11.4 35 3.24% 1% Y
M04.3 Bed 16.0 44 2.38% 1% Y
M05.1 Liv / Kit 42.2 99 4.38% 2% Y
M05.2 Bed 11.4 35 3.22% 1% Y
M05.3 Bed 16.0 44 2.34% 1% Y
M06.1 Liv / Kit 31.8 82 4.53% 2% Y
M06.2 Bed 11.5 35 3.18% 1% Y
M06.3 Bed 13.4 36 4.62% 1% Y
M07.1 Liv / Kit 31.8 82 5.54% 2% Y
M07.2 Bed 11.5 35 3.24% 1% Y
M07.3 Bed 13.4 36 7.27% 1% Y
M08.1 Liv / Kit 32.5 83 4.35% 2% Y
M08.2 Bed 15.2 34 2.61% 1% Y
M08.3 Bed 12.1 35 2.86% 1% Y
M09.1 Liv / Kit 41.9 104 4.24% 2% Y
M09.2 Bed 13.0 30 2.93% 1% Y
M09.3 Bed 11.4 31 3.26% 1% Y
M09.4 Bed 7.5 21 4.21% 1% Y
M10.1 Liv / Kit 41.9 104 4.25% 2% Y
M10.2 Bed 13.0 30 2.94% 1% Y
M10.3 Bed 11.4 31 3.29% 1% Y
M10.4 Bed 7.5 21 4.16% 1% Y
M11.1 Liv / Kit 55.7 135 3.24% 2% Y
M11.2 Bed 13.8 33 2.81% 1% Y
M11.3 Bed 11.4 35 3.13% 1% Y
M11.4 Bed 13.5 33 2.84% 1% Y
M12.1 Liv / Kit 55.7 135 3.30% 2% Y
M12.2 Bed 13.5 33 2.74% 1% Y
M12.3 Bed 11.4 35 3.23% 1% Y
M12.4 Bed 13.8 33 2.71% 1% Y
M13.1 Liv / Kit 42.0 104 4.32% 2% Y
M13.2 Bed 13.0 30 2.93% 1% Y
M13.3 Bed 11.4 31 3.42% 1% Y
M13.4 Bed 7.5 21 4.27% 1% Y
M14.1 Liv / Kit 42.0 104 4.93% 2% Y
M14.2 Bed 13.0 30 5.31% 1% Y
M14.3 Bed 11.4 31 3.35% 1% Y
M14.4 Bed 7.5 21 4.19% 1% Y
Table 6: Block M - Average Daylight Factor of habitable rooms on the ground, first & second floors.
DRAFT
18
4.1 DiscussionWithin the development the design was optimised for good quality daylight. Priority is given to main living spaces over bedrooms and where possible they are positioned away from inner corners or projecting stair cores to maximise available daylight. A large number of the rooms are dual aspect.
The higher target value of 2% is selected for all the main living rooms because they contain a kitchen and the BRE guide and BS 8602 Part 2: 2008 recommend that the higher value should be used were there are multiple uses in a room. The assessment plane covers 100% of the living space being considered and in some cases exclude the circulation space from the apartment entrance to the main living space and are deep within the plan where natural light levels will not penetrate and artificial lighting will be required. The assessment plane in these rooms still exceeds 80% of the floor plate.
All habitable rooms over the three floors in the duplex blocks LA, LC2, LD1 and M were assessed. The Remaining block at LB, LC1 and LD2 are identical mirror units and have the same or lesser obstructions surrounding the units and as a result will have the same or improved ADF values. Its is evident from the results that the ADF values improve with the higher the floor level. This is due to increased access to the sky with less obstruction from opposing buildings. All the rooms assessed exceed the minimum ADF levels of 1.5% for living spaces. All Bedrooms exceed the minimum AD value of 1%. All the units with a living space and kitchen occupying the same space exceed the minimum ADF value of 2%. A large number of the rooms exceed an ADF of 5%, this is particularly evident in the rooms with dual aspect.
The houses have typical layouts, where possible living spaces are dual aspect. Large windows and shallow room depths ensure the rooms have ample daylight and do not need to be assessed in detail.
4.2 ConclusionAll the rooms assessed exceed the minimum recommendations for the Average Daylight Factor and will be well daylit. The proposed development meets the recommendations of the BRE Guidelines and BS8206 Part 2:2008 Lighting for Buildings, Code of Practice for Daylighting.
DRAFT
19
N
4. Sunlight to gardens and open spaces
The BRE document indicates that for an amenity area to have good quality sunlight throughout the year, 50% should receive in excess of 2 hours sunlight on the 21st March. It also states that front gardens need not be assessed for sunlight.
Figure 9: Site plan indicating public open space / amenity areas.
S1
S2
S3
S6 S10
S5
Ballymany
House
BALLYMANY
UN
D
400 300 0 50
100
UND
Tk S
Tk F
1.83m FF
FB
FW
FF
CR
COCS
CS
Townland
Parsh
Barony
Couty
ABBREVIATIONS
(Site of)
136
135
797 795 794 793
LS
LS
LS
LS
LS
LS
LS
LS
LSLS
LSLS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
LS
Mhs
Mh
H
Mh
Mh
Mh
Mh
Mhs
H
H
Mhs
Mhs
Mhs
H
H
Mhs
Mhs
Mhs
Mhs
Mh
Mhs
Mh
Mh
Mh
Mh
Mhs
Mhs
Mhs
Mhs
Mhs
Mhs
Mhs
H
Mhs
Mhs
Mhs Mhs
Mh
Mh Mh
Mh
MhMh
Mh
Mh
H
H
Mh
Mhs
Mh
Mhs
H Mh
Mhs
Mh
Mh
H
Mh
Mhs
Mh
Mhs
H
Mhs
Mh
Mhs
Mh
Mh
Mh
H
Mhs
Mh
Mhs
Mh
MhH
Mhs
Mhs Mhs
H
Mh
Mhs Mh
Mhs
Mhs
Mh
Mhs H
Mhs
H
Mhs
Mh
Mh
Mh
Mhs
H
H
H
Mhs
Mhs
Mhs
Mhs
Mhs
Mhs
Mhs
Mhs
Mhs
Mhs
Mhs
Mh
Mh
Mh
H
H
Mh
Mhs
Ballymany Manor
Rathcurragh
UN
D
92
91
86
85
82 81
78 77
4241
3635
34
33
30
29
28
27
22
21
20
19
1615
12
11
2
1
94
95
10
2
10
3
104 10
5
108
109
110
111
118 11
9
129 13
0
134
135
128
127
126
121 12
0
9293
89
8687
136 1
37
140 141
145
35
34
30
29
39
38
36
110A109A
48
47
84
77
92
66
65
60
59
85
70
69
76
67
93
94
111 112
116
121
103
104
99
98
76
75
43
50
51
60
52
59
49
44
793 794 795 797
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Figure 10: Proposed Radiation map of amenity areas, showing available sunlight on 21st March. The scale represents the percentage of daylight received from 0 - 8 hrs.
DRAFT
20
5.1 Sunlight to amenity within the proposed developmentThis is a predominantly low rise development with a number of areas of amenity, the extent of which can be seen in Figure 9 above. The amenity area within this proposal have been assessed with a calculation of Sun on the Ground on the 21st March, generated analysis is shown in Figure 10 and the results are set out in Table 7 below.
Sunlight on the ground - within developmentLocation No. Proposed % Area receiving
2 hours sunlight on 21st MarchComment
S1 Public Open Space 100% Meets criteria
S2 Communal Space Block M 100% Meets criteria
S3 Public Open Space 100% Meets criteria
S4 Public Open Space 100% Meets criteria
S5 Creche 87% Meets criteria
S6 Public Open Space 100% Meets criteria
S7 Public Open Space 90% Meets criteria
S8 Public Open Space 100% Meets criteria
S9 Public Open Space 100% Meets criteria
S10 Public Open Space 100% Meets criteria
S11 Public Open Space 100% Meets criteria
Table 7: Calculation of Sun on the Ground to amenity area within the proposed development.
5.2 ConclusionA variety of amenity spaces have been designed into this scheme, they are well oriented for sunlight and all of the spaces assessed exceed 2 hours sunlight over 50% of the amenity space on the 21st March. The proposed development meets the recommendations of the BRE guidelines.
DRAFT
21
5. Shadow Diagrams
6.1 BRE Guidance on Shadow StudiesThe BRE guidelines recommend using the 21st March for plotting shadow, it states: “If a space is used all year round, the equinox (21 March) is the best date for which to prepare shadow plots as it gives an average level of shadowing. Lengths of shadows at the autumn equinox (21 September) will be the same as those for 21 March, so a separate set of plots for September is not required.”
June 21st and December 21st are provided below for information but it should be noted that the summer solstice is the best case scenario with shadows at their shortest. The guidelines recommends that “Sunlight at an altitude of 10° or less does not count”. In Winter even low buildings will cast long shadows and it is common for large areas of the ground to be in shadow throughout the day especially in a built up area as the sun barely rises above an altitude of 10° during the course of the day. Below are the times for the Equinox and Solstice that the sun is above 10° altitude rounded to the nearest half hour.
Equinox: Between 8:30 and 17:30Summer Solstice: Between 6:30 and 20:00Winter Solstice: Between 10:30 and 14:00
6.2 DiscussionThe site is a greenfield site and there is no shadows cast from any structures on the site at present so only the proposed condition is indicated.
Shadow diagrams are a visual aid to understand where possible shading may occur. The use of shadow diagrams as an assessment method should be taken over the course of the day and not a specific time due to the transient nature of the sun and the shade caused by obstructions.
Section 6.3 shows the proposed shadow diagrams for the Equinox on the 21st March at two hour intervals during the day between 09:00 and 17:00. Section 6.4 shows the proposed shadow diagrams for the Summer Solstice on the 21st June at two hourly intervals during the day between 10:00 and 18:00. Section 6.5 shows the proposed shadow diagrams for the Winter Solstice on the 21st December at two hourly intervals during the day between 10:00 and 15:00.
DRAFT
22
Figure 12: Shadow diagrams 21 March 11:00 GMT
N
Figure 11: Shadow diagrams 21 March 09:00 GMT
6.3 Shadow Casting diagrams March Equinox
DRAFT
23
N
Figure 14: Shadow diagrams 21 March 15:00 GMT
Figure 13: Shadow diagrams 21 March 13:00 GMT
DRAFT
24
Figure 16: Shadow diagrams 21 June 10:00 GMT+1 (DST)
6.4 Shadow Casting diagrams June Solstice
N
Figure 15: Shadow diagrams 21 March 17:00 GMT
DRAFT
25
Figure 18: Shadow diagrams 21 June 14:00 GMT+1 (DST)
Figure 17: Shadow diagrams 21 June 12:00 GMT+1 (DST)
N
DRAFT
26
Figure 20: Shadow diagrams 21 June 18:00 GMT+1 (DST)
Figure 19: Shadow diagrams 21 June 16:00 GMT+1 (DST)
N
DRAFT
27
Figure 21: Shadow diagrams 21 December 10:00 GMT
6.5 Shadow Casting diagrams December Solstice
N
Figure 22: Shadow diagrams 21 December 12:00 GMT
DRAFT
28
Figure 23: Shadow diagrams 21 December 14:00 GMT
N
Figure 24: Shadow diagrams 21 December 15:00 GMT