SUNLIGHT REPORT CROSS AVENUE RESIDENTIAL DEVELOPMENT
Transcript of SUNLIGHT REPORT CROSS AVENUE RESIDENTIAL DEVELOPMENT
20841
20841-VCE-ZZ-XX-RP-SU-001 i Cross Avenue Residential Development
DOCUMENT CONTROL
Rev Purpose Issued to Issued by Date Notes
00 Review Project Team VCE 20/06/2021 Draft
01 Review Project Team VCE 01/07/2021 Draft
02 Planning Project Team VCE 07/07/2021 Minor updates
03 Planning Project Team VCE 13/07/2021
04 Planning Project Team VCE 21/07/2021 Additional analysis
05 Planning Project Team VCE 28/07/2021 Minor Updates
CONTENTS
1. Executive Summary: .................................................................................................................. 1
2. Introduction ............................................................................................................................... 2
Conclusions .............................................................................................................................. 4
3. Skylight to the Surrounding Existing Residential Buildings ....................................................... 5
Vertical Sky Component .......................................................................................................... 5
Goleen ..................................................................................................................................... 7
Little Oaks, 1 St. Margaret’s ................................................................................................. 10
2 St. Margaret’s ..................................................................................................................... 13
3 Dunamase, St. Margaret’s .................................................................................................. 15
4. Sunlight to Surrounding Existing Residential Buildings ........................................................... 17
Summary of APSH and WPSH Results. ................................................................................... 18
Existing and Proposed Annual Probable Sunlit Hours (APSH) ............................................... 19
Existing and Proposed Winter Probable Sunlit Hours (WPSH) .............................................. 20
5. Overshadowing ......................................................................................................................... 22
Shadow Diagrams for 21st March ........................................................................................... 23
Shadow Diagrams for 21st June ............................................................................................. 27
Shadow Diagrams for 21st September ................................................................................... 31
Shadow Diagrams for 21st December .................................................................................... 35
6. Sunlight to Amenity Spaces ..................................................................................................... 39
Summary of Results for Amenity Spaces .............................................................................. 39
Amenity Spaces within the Proposed Scheme ...................................................................... 40
Sunlight to Adjacent Residential Amenity Spaces ................................................................ 42
Appendix 1 – Point Cloud Survey Drawing ............................................................................................ 45
20841
20841-VCE-ZZ-XX-RP-SU-001 1 Cross Avenue Residential Development
SUNLIGHT REPORT
CROSS AVENUE RESIDENTIAL DEVELOPMENT
1. Executive Summary:
Varming Consulting Engineers were engaged to provide sunlight analysis for the proposed Cross Avenue
Residential Development. The assessment was guided by the principles set out in BRE 209, ‘Site Layout Planning
for Daylight and Sunlight: A Guide to Good Practice’, Second Edition 2011 and BS 8206-2:2008 “Lighting for
buildings – Part 2: Code of practice for daylighting”.
The purpose of this report is to evaluate the quality and quantity of sunlight to the amenity areas of the scheme
and the impact, if any, to the availability of skylight and sunlight to surrounding residential dwellings and amenity
spaces. The model geometry which is the subject of this report was modelled in IES <Virtual Environmental> and
was based on drawings received from Urban Agency.
For assessment of the daylight to apartments within the development please refer to the Varming daylight report
20841-VCE-ZZ-XX-RP-SU-002.
Figure 1: Overview of site
20841
20841-VCE-ZZ-XX-RP-SU-001 2 Cross Avenue Residential Development
Shadow maps, contained in section 6, have been produced to inform the design development of the scheme and
to try to maximise the sunlight levels to the development. The methodology and context of the sunlight evaluation
is discussed in section 2.
BRE guidance states that for existing buildings obstruction of sunlight may be an issue if some part of a new
development is situated within 90 degrees due South of a main window wall and suggests evaluating using
Vertical Sky Component (VSC) at the Centre of the lowest window where daylight is required. A comparison of the
existing VSC and predicted situation were carried out for all windows which could be identified and the results in
section 2 show that all 36 windows evaluated will receive adequate skylight as they exceed the minimum advisory
VSC threshold of 27% after construction of the proposed development.
Access to sunlight was evaluated in relation to Annual Probable Sunlit Hours (APSH) which is the total number of
hours in the year that the sun is expected to shine on unobstructed ground while allowing for average monthly
levels of cloud cover for the specific location and is dependent on the latitude and longitude of the location. A
comparison of the APSH for both the existing situation and predicted situation post construction shown in section
4 illustrates that of 47 windows and rooflights evaluated 45 of them or 96% comply with BS8206 recommendations
that the centre of the window in the main living space should receive at least 25% of the Annual Probable Sunlit
Hours, at least 5% of the APSH from 21st September to 21st March (Winter Probable Sunlit Hours), and where
and if there is a reduction in light due to a new development the available sunlight hours should be greater than
80% of their former value.
The assessment was guided by the principles set out in BRE 209, ‘Site Layout Planning for Daylight and Sunlight:
A Guide to Good Practice’, Second Edition 2011. This report quantifies the predicted sunlight to amenity spaces
within the proposed development including roof terraces, along with adjacent amenity spaces of sensitive
receptors. BRE Guidelines recommend that at least 50% of an amenity area should receive a minimum 2 hours
sunlight on March 21st. Detailed results for each block are in section 7.1 while results for sensitive receptors are
contained in section 7.2
The results of the analysis show that all areas evaluated are in compliance with BRE guidelines and has been
designed in compliance with these parameters.
2. Introduction
BRE 209, ‘Site Layout Planning for Daylight and Sunlight: A Guide to Good Practice’, Second Edition 2011 was
used as the guidance for this evaluation. The BRE guidance advises on planning developments for good access
to daylight and sunlight, and is widely used by local authorities during the planning permission application process
to help determine the impacts of new developments including;
• Provision of natural light to new properties
• Potential losses to existing ones
• Overshadowing
The Cross Avenue Residential Development which is the subject of this report was modelled in IES <Virtual
Environmental> and the geometry was based on data received from Urban Agency..
Overshadowing
Shadow maps have been produced to inform the design development of the scheme and to try to maximise the
sunlight levels to amenity spaces. The methodology and context of the sunlight evaluation is discussed in section
2.
Overshadowing was visualized and analysed using Suncast which is used to investigate external obstruction and
self-shading of a building by generating shading and solar insolation images from any sun position defined by
date, time, orientation, site latitude and longitude. For this evaluation the following coordinates were used;
The following coordinates were uses for the evaluation;
Latitude: 53°18'07.3"n
Longitude: 6°11'28.4"w
BRE 209 uses the equinox, March 21st for evaluation of sunlight, skylight and daylight. The statistics of Met
Eireann show that during December, Dublin receives a mean daily duration of 1.7 hours of sunlight (only 22% of
potential sunlight hours) and during June, receives a mean daily duration of 6.4 hours of sunlight (38% of
potential sunlight hours). The summer solstice is the best case scenario with minimal shadows due to the height of
the sun, and winter solstice is the worst case, when it is common for large areas of the ground to be in shadow
due to the suns low angle and shorter days. Therefore for consistency and in line with BRE guidance we have
also used March 21st in overshadowing analysis to represent the average condition across the year. For
completeness we have also included diagrams for June 21st, 21st September and 21st December.
Regarding the assessment of nearby sensitive receptors, there are houses along the western edge on St.
Margaret’s which have been considered. These were evaluated further in terms of Vertical Sky Component,
Annual Probable Sunlit Hours and Sunlight to the amenity spaces. Areas to the north, south and east are too far
away and not considered sensitive in terms of BRE requirements.
Shadow maps in themselves do not provide quantitative metrics however they are useful to visualize any
overshadowing and to investigate whether buildings shade existing or proposed open spaces and sensitive
receptors. We have provided shadow maps showing the areas in shade at different times of day on March 21st as
shown in section 6 to determine areas requiring further investigation.
20841
20841-VCE-ZZ-XX-RP-SU-001 3 Cross Avenue Residential Development
Skylight to Surrounding Existing Residential Dwell ings;
BRE guidance states that for existing buildings obstruction of sunlight may be an issue if some part of a new
development is situated within 90 degrees due South of a main window wall and suggests evaluating using
Vertical Sky Component (VSC) at the Centre of the lowest window where daylight is required.
It should be noted that these dwellings have mature trees and vegetation shielding them from the proposed
development site and as such a number of methods were required to determine the dimensions and location of
windows. This required a combination of point cloud survey data, reference to planning documents, Google Earth
and photographic survey. The presence of this vegetation will eliminate any potential impact due to their
overshadowing effect however, to determine the worst case scenario for the purpose of this evaluation we have
not included the trees.
A comparison of the existing VSC and predicted situation were carried out for all 36 windows which could be
identified and the results in section 2 show that all windows evaluated will receive adequate skylight as they
exceed the minimum advisory VSC threshold of 27% after construction of the proposed development. As VSC is a
measure of the amount of skylight falling on a vertical window and all the windows evaluated exceed the minimum
required levels it is not appropriate to evaluate the rooflights for VSC
Sunlight to Surrounding Existing Residential Dwell ings
Access to sunlight is evaluated in relation to Annual Probable Sunlit Hours (APSH) which is the total number of
hours in the year that the sun is expected to shine on unobstructed ground while allowing for average monthly
levels of cloud cover for the specific location and is dependent on the latitude and longitude of the location. Winter
Probable Sunlit Hours (WPSH) is the APSH from 21st September to 21st March. BS 8206-2 states that for
existing buildings obstruction of sunlight may be an issue if some part of a new development is situated within 90
degrees due South of a main window wall.
A comparison of the APSH for both the existing situation and predicted situation post construction shown in
section 4 illustrates that 47 windows and rooflights evaluated 45 of them or 96% comply with BS8206
recommendations that the centre of the window in the main living space should receive at least 25% of the Annual
Probable Sunlit Hours, at least 5% of the APSH from 21st September to 21st March (WPSH), and where the
minimum threaholds are not met and there is a reduction in light due to a new development the available sunlight
hours should be greater than 80% of their former value. The exceptions are windows 7 and 8 in 2 St. Margaret’s
which although passing the annual criteria do not achieve the 5% winter criteria. Window 8 fails the WPSH criteria
in its present form due to overshadowing from the extension to the rear of the property, which also impact window
7.
Sunlight to Amenity Spaces
The availability of sunlight in public spaces, including those between buildings, plays an important role in the
overall appearance and ambience of a development along with making outdoor activities more pleasant. Amenity
areas which should be checked for access to sunlight are defined in the BRE guide as follows;
• Gardens, usually the main or back garden of a house and allotments
• Parks and playing fields
• Children’s playgrounds
• Outdoor swimming pools and paddling pools
• Sitting-out areas, such as those between non-domestic buildings and public squares
• Focal points for views, such as a group monument or fountains.
We carried out an evaluation of all amenity within the proposed development and the adjacent gardens of
sensitive receptors. The BRE guidance is the same for both public and private amenity areas in that at least 50%
of the area should receive at least 2 hours of sunlight on March 21st.
Sunlight exposure was evaluated by generating a 1m² grid across each amenity area. Solar exposure results were
calculated for each point of the grid, utilizing hourly solar shading data specific to the location, to determine the
availability of sunlight in hours and percentage of available hours for the specified period.
This report quantifies the predicted sunlight to amenity spaces within the proposed development site such as roof
terraces along with gardens of surrounding existing residential dwellings. Sunlight exposure was evaluated by
generating a 1m2 grid across each amenity area. Solar exposure results were calculated for each point of the grid,
utilizing hourly solar shading data specific to the location, to determine the availability of sunlight in hours and
percentage of available hours for the specified period. The results in section 7 show that all amenity spaces
evaluated exceed BRE guidelines that at least 50% of an amenity area should receive a minimum 2 hours sunlight
on March 21st. The analysis is based on guidance in the following documents;
BRE guide ‘Site Layout Planning for Daylight and Sunlight’ (2nd edit ion)
The BRE guide, contains guidance on how to design developments, whilst minimising the impacts on existing
buildings from overshadowing and reduced levels of daylight and sunlight. In addition, the BRE report provides
advice on how to design buildings to ensure that good practice levels of daylight and sunlight are provided.
As well as advice, the report contains a methodology to assess levels of daylight, sunlight and overshadowing,
and specifies criteria to determine the potential impacts of new development on surrounding buildings, and also to
determine whether new developments are well lit internally.
The BRE Report states that its own numerical guidelines ‘should be interpreted flexibly since natural lighting is
only one of many factors in site layout design. In special circumstances, the developer or planning authority may
wish to use different target values.
20841
20841-VCE-ZZ-XX-RP-SU-001 4 Cross Avenue Residential Development
Urban Development and Building Heights: Guidelines for Planning Authorit ies
The ‘Urban Development and Building Heights Guidelines for Planning Authorities’ published by the Department
of Housing, Planning and Local Government identify that as reflected in the National Planning Framework:
“that there is significant scope to accommodate anticipated population growth and development needs, whether
for housing, employment or other purposes, by building up and consolidating the development of our existing
urban areas’ and that ‘securing compact and sustainable urban growth means focusing on reusing previously
developed ‘brownfield’ land, building up infill sites (which may not have been built on before) and either reusing or
redeveloping existing sites and buildings, in well-serviced urban locations, particularly those served by good public
transport and supporting services, including employment opportunities”.
The Guidelines reference NPO 13 (from the NPF) which states that
“In urban areas, planning and related standards, including in particular building height and car parking will be
based on performance criteria that seek to achieve well-designed high-quality outcomes in order to achieve
targeted growth. These standards will be subject to a range of tolerance that enables alternative solutions to be
proposed to achieve stated outcomes, provided public safety is not compromised and the environment is suitably
protected’.
One of the key performance indicators identified in these statutory guidelines relates to daylight and sunlight
standards. Section 3.0 of the Urban Building Height Guidelines provides guidance for Planning Authorities and An
Bord Pleanala in considering development proposals for buildings taller than prevailing building heights in pursuit
of the Guidelines. In respect of the site/building scale the guidelines require consideration of:
• The form, massing and height of proposed developments should be carefully modulated so as to
maximise access to natural daylight, ventilation and views and minimise overshadowing and loss of light.
• Appropriate and reasonable regard should be taken of quantitative performance approaches to daylight
provision outlined in guides like the Building Research Establishment’s ‘Site Layout Planning for Daylight
and Sunlight (2nd Edition or BS 8206-2:2008 – ‘Lighting for Buildings- Part Local Planning Policy and
Guidelines
The proposed scheme has been designed recognizing the overall intent of the guidelines and significant volumes
of the buildings have been omitted to offer a ‘well designed, high quality scheme’. As stated in the guidance
documents above, daylight and sunlight are not the only criteria which must be considered and a workable
compromise has been proposed.
Conclusions
In carrying out this study we have adhered to quantitative performance approaches to sunlight provision set out in
BRE 209, ‘Site Layout Planning for Daylight and Sunlight: A Guide to Good Practice’, Second Edition 2011 and
have shown that all amenity spaces meet the BRE recommended criteria. In addition having evaluated the
sensitive receptors it was shown that all windows which could be identified achieve the required levels of sunlight
and skylight.
All 36 windows (excluding rooflights and skylights) evaluated for Vertical Sky Component comply guidance that
the VSC should be above 27% post construction illustrating that enough skylight should still reach the window of
existing sensitive receptors.
Of the 47 windows and roof lights evaluated 45 of or 96% have a predicted APSH is in excess of the BS 8206
minimum advisory threshold of 25% and the WPSH is in excess of the corresponding threshold of 5%. The
exceptions are windows 7 and 8 in 2 St. Margaret’s which although passing the annual criteria do not achieve the
5% winter criteria. Window 8 fails the WPSH criteria in its present form due to overshadowing from the extension
to the rear of the property, which also impacts window 7, irrespective of the current proposal. Please refer to figure
19.
However both these windows exceed the criteria for VSC and according to the planning application drawings the
rooms associated with windows 7 and 8 are a dinette and kitchen respectively. BRE guide states at paragraph
3.1.2 that sunlight is viewed as less important in bedrooms (and kitchens), where people prefer it in the morning
rather than the afternoon. In addition the extent of vegetation, trees and boundary wall in the vicinity of these
windows will impact the available sunlight.
The BRE guidance in itself aims to help rather than constrain the designer. Although it gives numerical guidelines,
it suggests these should be interpreted flexibly since natural lighting is only one of many factors which influence
site layout and fenestration design.
This is in line with the National Planning Framework with regard to urban planning;
“In urban areas, planning and related standards, including in particular building height and car parking will
be based on performance criteria that seek to achieve well-designed high-quality outcomes in order to
achieve targeted growth. These standards will be subject to a range of tolerance that enables alternative
solutions to be proposed to achieve stated outcomes, provided public safety is not compromised and the
environment is suitably protected.”
The current design has carefully considered maximizing solar access to the amenity spaces within the
development and minimising any potential impact on adjacent residential dwellings.
The project team took into consideration the provisions of the “Urban Development and Building Heights –
Guidelines for Planning Authorities” published by the Department of Environment Housing and Local Government
in 2018, which advises “appropriate and reasonable regard” to the relevant guidelines rather than stringent
adherence, and is relevant to the scale of the Phase 1 site;
“The form, massing and height of proposed developments should be carefully modulated so as to
maximise access to natural daylight, ventilation and views and minimise overshadowing and loss of light”
The height of Block A on the west side of the development have been reduced to minimise any potential
overshadowing or loss of light to sensitive receptors. Additionally fully landscaped terraces, accessible to all
residents of the development, have been provided in Blocks B and C to ensure access to sunlit external areas.
20841
20841-VCE-ZZ-XX-RP-SU-001 5 Cross Avenue Residential Development
3. Skylight to the Surrounding Existing Residential Buildings
Vertical Sky Component
Figure 2: Adjacent residential dwellings
To test the robustness of the proposed design adjacent dwellings were evaluated for VSC. The Vertical Sky
Component (VSC) is defined as “The ratio of that part of illuminance, at a point on a given vertical plane that is
received directly from a CIE Standard Overcast Sky, to illuminance on a horizontal plane due to an unobstructed
hemisphere of this sky”.
It should be noted that these dwellings have mature trees shielding them from the proposed development site and
as such a number of methods were required to determine the dimensions and location of windows. This required a
combination of point cloud survey data, reference to planning documents, and photographic survey. The presence
of this vegetation will eliminate any potential impact due to their overshadowing effect however, to determine the
worst case scenario for the purpose of this evaluation we have not included the trees.
Point cloud survey data
The locations and dimensions of twelve windows were determined in the survey. Due to the previously mentioned
vegetation other windows were obscured. The output of the survey is represented in the following drawing
provided by Murphys Surveys;
Drawing Name Fie Type Description Received
MGL39673_T_ITM_Rev0-00 DWG Topographical Survey 08/03/2021
Planning documents
Reference was made to drawings submitted to Dun laoghaire Rathdown Council Planning Department in support
of the following planning applications.
Planning Ref Location Description Dated
D14B/0031 Little Oaks, 1 St.
Margarets, Cross
Avenue, Blackrock
Permissions for alterations to
external elevations including
changes to the windows and
doors to the front, sides and
rear of the existing house.
February 2014
D01B/0348 No.2 St. Margarets,
Cross Avenue,
Blackrock
Proposed alterations April 2001
D03B/0215 3 Dunamase, St.
Margarets, Cross
Avenue,
Booterstown, Co.
Dublin
Proposed alterations and
extension
March 2003
The quality and quantity of daylight in an existing residential building can be impacted by obstructions caused by
new developments. One indicator suggested by BRE in the guidance document “Site Layout Planning for Daylight
and Sunlight” to measure the impact caused is to evaluate the Vertical Sky Component (VSC) at the centre of the
lowest window where daylight is required.
If the VSC can be maintained above 27%, then enough skylight should still reach the window of an existing
building. If the resultant VSC is both less than 27% and reduced by more than 20% of its former value after the
construction of the proposed development, occupants of the building will notice a reduction in skylight.
Goleen
1 St. Margaret’s
2 St. Margaret’s
3 St. Margaret’s
20841
20841-VCE-ZZ-XX-RP-SU-001 6 Cross Avenue Residential Development
The results in Table 1 show that all adjacent residential dwellings are predicted to have a VSC in excess of the
minimum advisory 27% and the reduction in VSC caused by the proposed new development is negligible and will
have no perceived impact. As VSC is a measure of the amount of skylight falling on a vertical window and all the
windows evaluated exceed the minimum required levels it is not appropriate to evaluate the rooflights for VSC.
Figure 3: Model image
Figure 4: Model Image
Dwelling VSC Ratio Proposed/ Existing
Compliance with BRE Guidelines (Yes/No)
Undeveloped Site
Proposed Scheme
VSC>27% VSC >80% of previous
Goleen
Window 1 38.91 32.92 84.61% Yes Yes
Window 2 38.24 33.00 86.30% Yes Yes
Window 3 38.32 33.06 86.27% Yes Yes
Window 4 38.35 38.25 99.74% Yes Yes
Window 5 36.12 30.68 84.94% Yes Yes
Window 6 36.66 30.88 84.23% Yes Yes
Window 7 36.23 35.69 98.51% Yes Yes
Window 8 37.60 37.22 98.99% Yes Yes
Window 9 38.62 37.77 97.80% Yes Yes
Window 10 34.65 34.25 98.85% Yes Yes
Little Oaks, 1 St. Margaret
Window 1 36.98 33.82 91.45% Yes Yes
Window 2 37.63 35.31 93.83% Yes Yes
Window 3 38.37 35.42 92.31% Yes Yes
Window 4 39.25 34.74 88.51% Yes Yes
Window 5 39.24 35.01 89.22% Yes Yes
Window 6 39.25 35.42 90.24% Yes Yes
Window 7 35.98 35.08 97.50% Yes Yes
Window 8 38.09 37.67 98.90% Yes Yes
Window 9 37.77 37.13 98.31% Yes Yes
Window 10 31.89 30.28 94.95% Yes Yes
Window 11 32.02 30.05 93.85% Yes Yes
Table 1: Vertical Sky Component
20841
20841-VCE-ZZ-XX-RP-SU-001 7 Cross Avenue Residential Development
Dwelling VSC Ratio Proposed/ Existing
Compliance with BRE Guidelines (Yes/No)
Undeveloped Site
Proposed Scheme
VSC>27% VSC >80% of previous
2 St. Margaret’s
Window 1 33.06 32.35 97.85% Yes Yes
Window 2 32.98 31.72 96.18% Yes Yes
Window 3 36.09 33.79 93.63% Yes Yes
Window 4 35.68 33.80 94.73% Yes Yes
Window 5 36.59 33.97 92.84% Yes Yes
Window 6 39.06 36.1 92.42% Yes Yes
Window 7 30.46 28.76 94.42% Yes Yes
Window 8 30.85 30.03 97.34% Yes Yes
3 Dunamase, St. Margaret’s
Window 1 39.62 39.14 98.79% Yes Yes
Window 2 39.59 39.02 98.56% Yes Yes
Window 3 39.47 39.10 99.06% Yes Yes
Window 4 39.85 38.45 96.49% Yes Yes
Window 5 38.80 38.45 99.10% Yes Yes
Window 6 38.28 37.47 97.88% Yes Yes
Window 7 37.51 37.05 98.77% Yes Yes
Table 1a: Vertical Sky Component
Goleen
Reference Data
There were no planning drawings available for Goleen so identification of windows was based on point cloud
survey data, Google Earth and photographic survey.
Figure 5: Google Earth image
20841
20841-VCE-ZZ-XX-RP-SU-001 8 Cross Avenue Residential Development
Figure 6: Model Image
Results for Vertical Sky Component (VSC)
Figure 7: Windows evaluated
Dwelling VSC Ratio
Proposed/Existing
Compliance with BRE
Guidelines (Yes/No)
Undeveloped
Site
Proposed
Scheme
VSC>27% VSC >80%
of previous
Goleen
Window 1 38.91 32.92 84.61% Yes Yes
Window 2 38.24 33.00 86.30% Yes Yes
Window 3 38.32 33.06 86.27% Yes Yes
Window 4 38.35 38.25 99.74% Yes Yes
Window 5 36.12 30.68 84.94% Yes Yes
Window 6 36.66 30.88 84.23% Yes Yes
Window 7 36.23 35.69 98.51% Yes Yes
Window 8 37.60 37.22 98.99% Yes Yes
Window 9 38.62 37.77 97.80% Yes Yes
Window 10 34.65 34.25 98.85% Yes Yes
Table 2: Vertical Sky Component
20841
20841-VCE-ZZ-XX-RP-SU-001 10 Cross Avenue Residential Development
Litt le Oaks, 1 St. Margaret’s
Figure 10: Google Earth image
Figure 11: Model Image
Reference Data
Reference was made to the following drawings submitted to Dun laoghaire Rathdown County Council Planning
Department in support of planning application D14B/0031;
Drawing
Number
Description Prepared By Date
13-MRG-11 Proposed ground and first floor plans Dorman Architects January 2014
13-MRG-12 Proposed side elevations Dorman Architects January 2014
13-MRG-13 Proposed front and rear elevations and section Dorman Architects January 2014
Table 3: Reference drawings
Figure 12: Reference drawing; 13-MRG-13, Proposed front and rear elevations and section
20841
20841-VCE-ZZ-XX-RP-SU-001 11 Cross Avenue Residential Development
Results for Vertical Sky Component (VSC)
Figure 13: Windows evaluated
Figure 14: Windows evaluated
Dwelling VSC Ratio
Proposed/Existing
Compliance with BRE
Guidelines (Yes/No)
Undeveloped
Site
Proposed
Scheme
VSC>27% VSC >80%
of previous
Little Oaks, 1 St.
Margaret’s
Window 1 36.98 33.82 91.45% Yes Yes
Window 2 37.63 35.31 93.83% Yes Yes
Window 3 38.37 35.42 92.31% Yes Yes
Window 4 39.25 34.74 88.51% Yes Yes
Window 5 39.24 35.01 89.22% Yes Yes
Window 6 39.25 35.42 90.24% Yes Yes
Window 7 35.98 35.08 97.50% Yes Yes
Window 8 38.09 37.67 98.90% Yes Yes
Window 9 37.77 37.13 98.31% Yes Yes
Window 10 31.89 30.28 94.95% Yes Yes
Window 11* 32.02 30.05 93.85% Yes Yes
Table 4: VSC Results
Note: Window 11 represents the average VSC of the 10 glazed units modelled for the conservatory
20841
20841-VCE-ZZ-XX-RP-SU-001 12 Cross Avenue Residential Development
Figure 15: Existing VSC
Figure 16: Proposed VSC
20841
20841-VCE-ZZ-XX-RP-SU-001 13 Cross Avenue Residential Development
2 St. Margaret’s
Figure 17: Google Earth image
Figure 18: Dwelling evaluated
Reference Data
Reference was made to the following drawings submitted to Dun laoghaire Rathdown County Council Planning
Department in support of a planning application D01B/0348 submitted in May 2001.
Drawing
Number
Description Prepared By Issued for Planning
1001-P03 Site Plan Christopher Ryan Architect May 2001
1001-P04 Proposed first floor
and attic plan
Christopher Ryan Architect May 2001
1001-P05 Proposed sections Christopher Ryan Architect May 2001
1001-P06 Elevations Christopher Ryan Architect May 2001
Table 5: Reference drawings
Figure 18a: Reference drawing ,
20841
20841-VCE-ZZ-XX-RP-SU-001 14 Cross Avenue Residential Development
Figure 19: Windows evaluated
Dwelling VSC Ratio
Proposed/Existing
Compliance with BRE
Guidelines (Yes/No)
Undeveloped
Site
Proposed
Scheme
VSC>27% VSC >80%
of previous
2 St. Margaret’s
Window 1 33.06 32.35 97.85% Yes Yes
Window 2 32.98 31.72 96.18% Yes Yes
Window 3 36.09 33.79 93.63% Yes Yes
Window 4 35.68 33.80 94.73% Yes Yes
Window 5 36.59 33.97 92.84% Yes Yes
Window 6 39.06 36.1 92.42% Yes Yes
Window 7 30.46 28.76 94.42% Yes Yes
Window 8 30.85 30.03 97.34% Yes Yes
Table 6: VSC results
Figure 20: Existing VSC
Figure 21: Proposed VSC
20841
20841-VCE-ZZ-XX-RP-SU-001 15 Cross Avenue Residential Development
3 Dunamase, St. Margaret’s
Figure 22: Google Earth image
Figure 23: Model image
Reference Data
Reference was made to the following drawings submitted to Dun laoghaire Rathdown County Council Planning
Department in support of planning application D03B/0215 submitted March 2003..
Drawing
Number
Description Prepared By Issued for Planning
- Proposed floor
plans
Brian O’Donohue Architects March 2003
- Proposed elevations Brian O’Donohue Architects March 2003
Table 7: Reference drawings
Figure 23a: Reference drawing
20841
20841-VCE-ZZ-XX-RP-SU-001 16 Cross Avenue Residential Development
Figure 24: Windows evaluated
Dwelling VSC Ratio
Proposed/Existing
Compliance with BRE
Guidelines (Yes/No)
Undeveloped
Site
Proposed
Scheme
VSC>27% VSC >80%
of previous
3 Dunamase, St.
Margaret’s
Window 1 39.62 39.14 98.79% Yes Yes
Window 2 39.59 39.02 98.56% Yes Yes
Window 3 39.47 39.10 99.06% Yes Yes
Window 4 39.85 38.45 96.49% Yes Yes
Window 5 38.80 38.45 99.10% Yes Yes
Window 6 38.28 37.47 97.88% Yes Yes
Window 7 37.51 37.05 98.77% Yes Yes
Table 8: VSC results
Figure 25: Existing VSC
Figure 26: Proposed VSC
20841
20841-VCE-ZZ-XX-RP-SU-001 17 Cross Avenue Residential Development
4. Sunlight to Surrounding Existing Residential Buildings
Access to sunlight is evaluated in relation to Annual Probable Sunlit Hours (APSH). Annual Probable Sunlit Hours
(APSH) is the total number of hours in the year that the sun is expected to shine on unobstructed ground while
allowing for average monthly levels of cloud cover for the specific location and is dependent on the latitude and
longitude of the location. BS 8206-2 states that for existing buildings obstruction of sunlight may be an issue if
some part of a new development is situated within 90o due South of a main window wall. The recommendation is
that the centre of the window in the main living space;
• Should receive at least 25% of the Annual Probable Sunlit Hours.
• Should receive at least 5% of the WPSH from 21st September to 21st March.
• The available sunlight hours should be greater than 80% of their former value.
If following the new development the existing room could receive more than 25% of probable sunlight hours
including at least 5% of probable sunlight hours in the winter months, between 21st September and 21st March,
then the room would still receive enough sunlight.
Any reduction in sunlight access below this level should be kept to a minimum. If the probable sunlight hours were
both less than this and less than 0.8 times their former value, either over the whole year or just in the winter
months (21 September to 21 March) then the occupants of the existing building would notice the loss of sunlight.
The following results illustrate that of the 47 windows and rooflights evaluated 45 of them or 96% have a predicted
APSH is in excess of the BS 8206 minimum advisory threshold of 25% and the WPSH is in excess of the
corresponding threshold of 5%. The exceptions are windows 7 and 8 in 2 St. Margaret’s which although passing
the annual criteria do not achieve the 5% winter criteria. Window 8 fails the WPSH criteria in its present form due
to overshadowing from the extension to the rear of the property, which also impact window 7.
According to the planning application drawings the rooms associated with windows 7 and 8 are a dinette and
kitchen respectively (refer to figure 26a). It is noted that both of these rooms have a second window serving them
which face east, and that these windows are not the single access to light for these rooms in the winter months. It
is also noted that they have excellent light on average throughout the year.
BRE guide states at paragraph 3.1.2 that sunlight is viewed as less important in bedrooms (and kitchens), where
people prefer it in the morning rather than the afternoon. In addition the extent of vegetation, trees and boundary
wall in the vicinity of these windows will impact the available sunlight.
For completeness we have included the % reduction in light as a result of the proposed development, however it
is important to note that only if the minimum thresholds are not achieved does the percentage reduction in light
become relevant. In this case the threshold of 25% is exceeded so all windows evaluated receive adequate
sunlight throughout the year.
Figure 26a: Drawing from planning application D01B/0348 submitted in May 2001.
20841
20841-VCE-ZZ-XX-RP-SU-001 18 Cross Avenue Residential Development
Summary of APSH and WPSH Results.
Dwelling APSH (%) WPSH (%) Complies with BS8206
Goleen
Window 1 46.1 17.49 Yes
Window 2 46.43 16.67 Yes
Window 3 47.01 16.67 Yes
Window 4 46.63 16.87 Yes
Window 5 39.58 14.62 Yes
Window 6 40.49 14.97 Yes
Window 7 60.03 27.11 Yes
Window 8 64.37 29.58 Yes
Window 9 66.75 30.78 Yes
Window 10 56.05 27.66 Yes
Little Oaks, 1 St. Margaret’s
Window 1 40.69 15.01 Yes
Window 2 43.76 15.94 Yes
Window 3 43.76 15.94 Yes
Window 4 44.45 13.89 Yes
Window 5 46.55 15.85 Yes
Window 6 48.14 16.89 Yes
Window 7 68.91 27.02 Yes
Window 8 76.15 33.1 Yes
Window 9 76.14 33.08 Yes
Window 10 51.28 19.69 Yes
Window 11 52.46 19.48 Yes
Rooflight 1 49.65 10.38 Yes
Rooflight 2 56.12 11.04 Yes
Rooflight 3 54.92 19.82 Yes
Rooflight 4 63.59 22.68 Yes
Rooflight 5 73.61 27.08 Yes
Rooflight 6 73.61 27.08 Yes
Rooflight 7 73.61 27.08 Yes
Rooflight 8 73.63 27.08 Yes
Table 9 Sunlight results for APSH and WPSH
Dwelling APSH (%) WPSH (%) Complies with BS8206
2 St. Margaret’s
Window 1 43.23 16.83 Yes
Window 2 31.72 6.81 Yes
Window 3 42.33 16.53 Yes
Window 4 41.9 16.1 Yes
Window 5 39.91 14.11 Yes
Window 6 47.13 15.91 Yes
Window 7 25.88 3.46 No
Window 8 29.03 2.74 No
Rooflight 1 70.55 24.03 Yes
Rooflight 2 63.54 18.14 Yes
Rooflight 3 67.27 20.79 Yes
3 Dunamase, St. Margaret’s
Window 1 37.5 11.11 Yes
Window 2 37.5 11.11 Yes
Window 3 37.5 11.11 Yes
Window 4 36.52 10.61 Yes
Window 5 37.16 10.99 Yes
Window 6 33.26 9.32 Yes
Window 7 32.47 8.13 Yes
Table 9a: Sunlight results for APSH and WPSH
Windows 7 and 8 at St. Margaret’s although passing the APSH threshold of 25% do not achieve the 5% winter
criteria. Window 8 fails the WPSH criteria in its present form due to overshadowing from the extension to the rear
of the property, which also impacts window 7, irrespective of the current proposal.
It is noted that both of these rooms have a second window serving them which face east, and that these windows
are not the single access to light for these rooms in the winter months. it is also noted that they have excellent
light on average throughout the year receiving 29.23% and 31.09% APSH respectively.
20841
20841-VCE-ZZ-XX-RP-SU-001 19 Cross Avenue Residential Development
Exist ing and Proposed Annual Probable Sunlit Hours (APSH)
Dwelling Existing APSH (%)
Proposed APSH (%)
Ratio Complies with BS8206
Goleen
Window 1 59.01 46.1 78.12% Yes
Window 2 58.96 46.43 78.75% Yes
Window 3 58.93 47.01 79.77% Yes
Window 4 58.98 46.63 79.06% Yes
Window 5 58.33 39.58 67.86% Yes
Window 6 58.33 40.49 69.42% Yes
Window 7 63.53 60.03 94.49% Yes
Window 8 68.01 64.37 94.65% Yes
Window 9 70.54 66.75 94.63% Yes
Window 10 60.2 56.05 93.11% Yes
Little Oaks, 1 St. Margaret’s
Window 1 46.25 40.69 87.98% Yes
Window 2 48.92 43.76 89.45% Yes
Window 3 48.92 43.76 89.45% Yes
Window 4 53.48 44.45 83.12% Yes
Window 5 54.62 46.55 85.23% Yes
Window 6 55.78 48.14 86.30% Yes
Window 7 68.93 68.91 99.97% Yes
Window 8 80.56 76.15 94.53% Yes
Window 9 79.93 76.14 95.26% Yes
Window 10 58.92 51.28 87.03% Yes
Window 11 57.75 52.46 90.84% Yes
Rooflight 1 57.25 49.65 86.72% Yes
Rooflight 2 63.17 56.12 88.84% Yes
Rooflight 3 68.43 54.92 80.26% Yes
Rooflight 4 74.73 63.59 85.09% Yes
Rooflight 5 78.47 73.61 93.81% Yes
Rooflight 6 78.47 73.61 93.81% Yes
Rooflight 7 78.47 73.61 93.81% Yes
Rooflight 8 78.47 73.63 93.83% Yes
Table 10: Annual Probable Sunlit Hours
Dwelling Existing APSH (%)
Proposed APSH (%)
Ratio Complies with BS8206
2 St. Margaret’s
Window 1 44.88 43.23 96.32% Yes
Window 2 32.85 31.72 96.56% Yes
Window 3 45.92 42.33 92.18% Yes
Window 4 45.89 41.9 91.31% Yes
Window 5 44.56 39.91 89.56% Yes
Window 6 53.84 47.13 87.54% Yes
Window 7 29.23 25.88 88.54% Yes
Window 8 31.09 29.03 93.37% Yes
Rooflight 1 74.77 70.55 94.36% Yes
Rooflight 2 68.4 63.54 92.89% Yes
Rooflight 3 72.13 67.27 93.26% Yes
3 Dunamase, St. Margaret’s
Window 1 39.58 37.5 94.74% Yes
Window 2 39.58 37.5 94.74% Yes
Window 3 39.58 37.5 94.74% Yes
Window 4 39.11 36.52 93.38% Yes
Window 5 39.36 37.16 94.41% Yes
Window 6 37.14 33.26 89.55% Yes
Window 7 34.79 32.47 93.33% Yes
Table 10a Annual Probable Sunlit Hours
20841
20841-VCE-ZZ-XX-RP-SU-001 20 Cross Avenue Residential Development
Exist ing and Proposed Winter Probable Sunlit Hours (WPSH)
Dwelling Existing WPSH (%)
Proposed WPSH (%)
Ratio Complies with BS8206
Goleen
Window 1 22.89 16.67 72.83% Yes
Window 2 21.99 16.67 75.81% Yes
Window 3 21.09 16.87 79.99% Yes
Window 4 18.41 14.62 79.41% Yes
Window 5 18.25 14.97 82.03% Yes
Window 6 30.61 27.11 88.57% Yes
Window 7 33.22 29.58 89.04% Yes
Window 8 34.56 30.78 89.06% Yes
Window 9 31.3 27.66 88.37% Yes
Window 10 22.89 16.67 72.83% Yes
Little Oaks, 1 St. Margaret’s
Window 1 20.56 15.01 73.01% Yes
Window 2 21.11 15.94 75.51% Yes
Window 3 21.11 15.94 75.51% Yes
Window 4 22.22 13.89 62.51% Yes
Window 5 23.47 15.85 67.53% Yes
Window 6 24.53 16.89 68.85% Yes
Window 7 27.05 27.02 99.89% Yes
Window 8 37.5 33.1 88.27% Yes
Window 9 36.87 33.08 89.72% Yes
Window 10 27.33 19.69 72.05% Yes
Window 11 24.56 19.48 79.32% Yes
Rooflight 1 13.46 10.38 77.12% Yes
Rooflight 2 13.81 11.04 79.94% Yes
Rooflight 3 30.67 19.82 64.62% Yes
Rooflight 4 31.4 22.68 72.23% Yes
Rooflight 5 30.56 27.08 88.61% Yes
Rooflight 6 30.56 27.08 88.61% Yes
Rooflight 7 30.56 27.08 88.61% Yes
Rooflight 8 30.56 27.08 88.61% Yes
Table 11: Results for Winter Probeble Sunlight Hours
Dwelling Existing
WPSH (%)
Proposed
WPSH (%)
Ratio Complies with BS8206
2 St. Margaret’s
Window 1 18.47 16.83 91.12% Yes
Window 2 7.94 6.81 85.77% Yes
Window 3 20.11 16.53 82.20% Yes
Window 4 20.09 16.1 80.14% Yes
Window 5 18.76 14.11 75.21% Yes
Window 6 22.62 15.91 70.34% Yes
Window 7 6.81 3.46 50.81% No
Window 8 4.8 2.74 57.08% No
Rooflight 1 26.85 26.85 89.50% Yes
Rooflight 2 21.61 21.61 83.94% Yes
Rooflight 3 24.26 24.26 85.70% Yes
3 Dunamase, St. Margaret’s
Window 1 13.19 11.11 84.23% Yes
Window 2 13.19 11.11 84.23% Yes
Window 3 13.19 11.11 84.23% Yes
Window 4 13.19 10.61 80.44% Yes
Window 5 13.19 10.99 83.32% Yes
Window 6 13.19 9.32 70.66% Yes
Window 7 10.45 8.13 77.80% Yes
Table 11a: Results for Winter Probeble Sunlight Hours
Windows 7 and 8 at St. Margaret’s although passing the APSH threshold of 25% do not achieve the 5% winter
criteria. Window 8 fails the WPSH criteria in its present form due to overshadowing from the extension to the rear
of the property, which also impacts window 7, irrespective of the current proposal.
It is noted that both of these rooms have a second window serving them which face east, and that these windows
are not the single access to light for these rooms in the winter months. it is also noted that they have excellent
light on average throughout the year receiving 29.23% and 31.09% APSH respectively.
20841
20841-VCE-ZZ-XX-RP-SU-001 21 Cross Avenue Residential Development
Figure 27: Windows failing Winter Probable Sunlit Hours criteria
Figure 28: Location of windows from Google Earth
20841
20841-VCE-ZZ-XX-RP-SU-001 22 Cross Avenue Residential Development
5. Overshadowing
The shadow maps presented here were used to visualize any overshadowing of buildings or amenity spaces,
compare the shadow maps of the existing and proposed situations, and to guide further investigation of sunlight
access in later sections. They were also used to inform the design development of the scheme and to try to
maximise the sunlight levels to amenity spaces.
The maps demonstrate that following development there will be limited adverse impact on surrounding dwellings
or amenity areas and only transient overshadowing over amenity areas within the development.
Overshadowing was visualized and analysed using Suncast which is used to investigate external obstruction and
self-shading of a building by generating shading and solar insolation images from any sun position defined by
date, time, orientation, site latitude and longitude. For this evaluation the following coordinates were used;
The following coordinates were uses for the evaluation;
Latitude: 53°18'07.3"n
Longitude: 6°11'28.4"w
BRE 209 uses the equinox, March 21st for evaluation of sunlight, skylight and daylight. The statistics of Met
Eireann show that during December, Dublin receives a mean daily duration of 1.7 hours of sunlight (only 22% of
potential sunlight hours) and during June, receives a mean daily duration of 6.4 hours of sunlight (38% of
potential sunlight hours). The summer solstice is the best case scenario with minimal shadows due to the height of
the sun, and winter solstice is the worst case, when it is common for large areas of the ground to be in shadow
due to the suns low angle and shorter days. Therefore for consistency and in line with BRE guidance we have
also used March 21st in overshadowing analysis to represent the average condition across the year. For
completeness we have also included diagrams for June 21st, 21st September and 21st December.
Regarding the assessment of nearby sensitive receptors, there are houses along the western edge on St.
Margaret’s which have been considered. These were evaluated further in terms of Vertical Sky Component,
Annual Probable Sunlit Hours. Please refer to sections 3 and 4. It should be noted that these dwellings have
mature trees and vegetation shielding them from the proposed development site, the presence of this which will
eliminate any potential impact due to their overshadowing effect however, to determine the worst case scenario
for the purpose of this evaluation we have not included the trees.
20841
20841-VCE-ZZ-XX-RP-SU-001 23 Cross Avenue Residential Development
Shadow Diagrams for 21 s t March
Exist ing
8:00 09:00 10:00
Proposed
08:00 09:00 10:00
21 M ar 08: 00
N
sun
Suncast image:
View time = 21 Mar 08:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 112.48 alt = 16.43
Eye: azi = 180.00 alt = 90.00
21 M ar 09: 00
N
sun
Suncast image:
View time = 21 Mar 09:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 125.95 alt = 24.58
Eye: azi = 180.00 alt = 90.00
21 M ar 10: 00
N
sun
Suncast image:
View time = 21 Mar 10:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 141.13 alt = 31.35
Eye: azi = 180.00 alt = 90.00
21 M ar 08: 00
N
sun
Suncast image:
View time = 21 Mar 08:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 112.48 alt = 16.43
Eye: azi = 180.00 alt = 90.00
21 M ar 09: 00
N
sun
Suncast image:
View time = 21 Mar 09:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 125.95 alt = 24.58
Eye: azi = 180.00 alt = 90.00
21 M ar 10: 00
N
sunSuncast image:
View time = 21 Mar 10:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 141.13 alt = 31.35
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 24 Cross Avenue Residential Development
Exist ing
11:00 12:00 13:00
Proposed
11:00 12:00 13:00
21 M ar 11: 00
N
sun
Suncast image:
View time = 21 Mar 11:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 158.28 alt = 36.06
Eye: azi = 180.00 alt = 90.00
21 M ar 12: 00
N
sun
Suncast image:
View time = 21 Mar 12:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 176.94 alt = 38.07
Eye: azi = 180.00 alt = 90.00
21 M ar 13: 00
N
sun
Suncast image:
View time = 21 Mar 13:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 195.84 alt = 37.03
Eye: azi = 180.00 alt = 90.00
21 M ar 11: 00
Nsun
Suncast image:
View time = 21 Mar 11:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 158.28 alt = 36.06
Eye: azi = 180.00 alt = 90.00
21 M ar 12: 00
N
sunSuncast image:
View time = 21 Mar 12:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 176.94 alt = 38.07
Eye: azi = 180.00 alt = 90.00
21 M ar 13: 00
N
sun
Suncast image:
View time = 21 Mar 13:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 195.84 alt = 37.03
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 25 Cross Avenue Residential Development
Exist ing
14:00 15:00 16:00
Proposed
14:00 15:00 16:00
21 M ar 14: 00
N
sun
Suncast image:
View time = 21 Mar 14:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 213.57 alt = 33.12
Eye: azi = 180.00 alt = 90.00
21 M ar 15: 00
N
sun
Suncast image:
View time = 21 Mar 15:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 229.38 alt = 26.93
Eye: azi = 180.00 alt = 90.00
21 M ar 16: 00
N
sun
Suncast image:
View time = 21 Mar 16:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 243.34 alt = 19.16
Eye: azi = 180.00 alt = 90.00
21 M ar 14: 00
Nsu
n
Suncast image:
View time = 21 Mar 14:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 213.57 alt = 33.12
Eye: azi = 180.00 alt = 90.00
21 M ar 15: 00
N
sun
Suncast image:
View time = 21 Mar 15:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 229.38 alt = 26.93
Eye: azi = 180.00 alt = 90.00
21 M ar 16: 00
N
sun
Suncast image:
View time = 21 Mar 16:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 243.34 alt = 19.16
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 26 Cross Avenue Residential Development
Exist ing
1700 18:00
Proposed
1700 18:00
21 M ar 17: 00
N
sun
Suncast image:
View time = 21 Mar 17:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 255.96 alt = 10.42
Eye: azi = 180.00 alt = 90.00
21 M ar 18: 00
N
sun
Suncast image:
View time = 21 Mar 18:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 267.86 alt = 1.18
Eye: azi = 180.00 alt = 90.00
21 M ar 17: 00
N
sun
Suncast image:
View time = 21 Mar 17:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 255.96 alt = 10.42
Eye: azi = 180.00 alt = 90.00
21 M ar 18: 00
N
sun
Suncast image:
View time = 21 Mar 18:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 267.86 alt = 1.18
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 27 Cross Avenue Residential Development
Shadow Diagrams for 21s t June
Exist ing
08:00 09:00 10:00
Proposed
08:00 09:00 10:00
21 Jun 08: 00
N
sun
Suncast image:
View time = 21 Jun 08:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 97.26 alt = 36.15
Eye: azi = 180.00 alt = 90.00
21 Jun 09: 00
N
sun
Suncast image:
View time = 21 Jun 09:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 110.98 alt = 45.19
Eye: azi = 180.00 alt = 90.00
21 Jun 10: 00
N
sun
Suncast image:
View time = 21 Jun 10:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 128.10 alt = 53.32
Eye: azi = 180.00 alt = 90.00
21 Jun 08: 00
N
sun
Suncast image:
View time = 21 Jun 08:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 97.26 alt = 36.15
Eye: azi = 180.00 alt = 90.00
21 Jun 09: 00
N
sun
Suncast image:
View time = 21 Jun 09:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 110.98 alt = 45.19
Eye: azi = 180.00 alt = 90.00
21 Jun 10: 00
N
sun
Suncast image:
View time = 21 Jun 10:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 128.10 alt = 53.32
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 28 Cross Avenue Residential Development
Exist ing
11:00 12:00 13:00
Proposed
11:00 12:00 13:00
21 Jun 11: 00
N
sun
Suncast image:
View time = 21 Jun 11:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 150.53 alt = 59.43
Eye: azi = 180.00 alt = 90.00
21 Jun 12: 00
N
sun
Suncast image:
View time = 21 Jun 12:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 178.39 alt = 61.96
Eye: azi = 180.00 alt = 90.00
21 Jun 13: 00
N
sun
Suncast image:
View time = 21 Jun 13:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 206.63 alt = 59.92
Eye: azi = 180.00 alt = 90.00
21 Jun 11: 00
N
sun
Suncast image:
View time = 21 Jun 11:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 150.53 alt = 59.43
Eye: azi = 180.00 alt = 90.00
21 Jun 12: 00
N
sun
Suncast image:
View time = 21 Jun 12:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 178.39 alt = 61.96
Eye: azi = 180.00 alt = 90.00
21 Jun 13: 00
N
sun
Suncast image:
View time = 21 Jun 13:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 206.63 alt = 59.92
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 29 Cross Avenue Residential Development
Exist ing
14:00 15:00 16:00
Proposed
14:00 15:00 16:00
21 Jun 14: 00
N
sun
Suncast image:
View time = 21 Jun 14:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 229.73 alt = 54.12
Eye: azi = 180.00 alt = 90.00
21 Jun 15: 00
N
sun
Suncast image:
View time = 21 Jun 15:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 247.34 alt = 46.15
Eye: azi = 180.00 alt = 90.00
21 Jun 16: 00
N
sun
Suncast image:
View time = 21 Jun 16:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 261.34 alt = 37.17
Eye: azi = 180.00 alt = 90.00
21 Jun 14: 00
Nsu
n
Suncast image:
View time = 21 Jun 14:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 229.73 alt = 54.12
Eye: azi = 180.00 alt = 90.00
21 Jun 15: 00
N
sun
Suncast image:
View time = 21 Jun 15:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 247.34 alt = 46.15
Eye: azi = 180.00 alt = 90.00
21 Jun 16: 00
N
sun
Suncast image:
View time = 21 Jun 16:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 261.34 alt = 37.17
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 30 Cross Avenue Residential Development
Exist ing
17:00 18:00
Proposed
17:00 18:00
21 Jun 17: 00
N
sun
Suncast image:
View time = 21 Jun 17:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 273.38 alt = 27.85
Eye: azi = 180.00 alt = 90.00
21 Jun 18: 00
N
sun
Suncast image:
View time = 21 Jun 18:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 284.52 alt = 18.64
Eye: azi = 180.00 alt = 90.00
21 Jun 17: 00
N
sun
Suncast image:
View time = 21 Jun 17:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 273.38 alt = 27.85
Eye: azi = 180.00 alt = 90.00
21 Jun 18: 00
N
sun
Suncast image:
View time = 21 Jun 18:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 284.52 alt = 18.64
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 31 Cross Avenue Residential Development
Shadow Diagrams for 21 s t September
Exist ing
8:00 09:00 10:00
Proposed
08:00 09:00 10:00
21 M ar 08: 00
N
sun
Suncast image:
View time = 21 Mar 08:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 112.48 alt = 16.43
Eye: azi = 180.00 alt = 90.00
21 M ar 09: 00
N
sun
Suncast image:
View time = 21 Mar 09:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 125.95 alt = 24.58
Eye: azi = 180.00 alt = 90.00
21 M ar 10: 00
N
sun
Suncast image:
View time = 21 Mar 10:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 141.13 alt = 31.35
Eye: azi = 180.00 alt = 90.00
21 M ar 08: 00
N
sun
Suncast image:
View time = 21 Mar 08:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 112.48 alt = 16.43
Eye: azi = 180.00 alt = 90.00
21 M ar 09: 00
Nsun
Suncast image:
View time = 21 Mar 09:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 125.95 alt = 24.58
Eye: azi = 180.00 alt = 90.00
21 M ar 10: 00
N
sunSuncast image:
View time = 21 Mar 10:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 141.13 alt = 31.35
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 32 Cross Avenue Residential Development
Exist ing
11:00 12:00 13:00
Proposed
11:00 12:00 13:00
21 M ar 11: 00
N
sun
Suncast image:
View time = 21 Mar 11:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 158.28 alt = 36.06
Eye: azi = 180.00 alt = 90.00
21 M ar 12: 00
N
sun
Suncast image:
View time = 21 Mar 12:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 176.94 alt = 38.07
Eye: azi = 180.00 alt = 90.00
21 M ar 13: 00
N
sun
Suncast image:
View time = 21 Mar 13:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 195.84 alt = 37.03
Eye: azi = 180.00 alt = 90.00
21 M ar 11: 00
Nsun
Suncast image:
View time = 21 Mar 11:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 158.28 alt = 36.06
Eye: azi = 180.00 alt = 90.00
21 M ar 12: 00
N
sunSuncast image:
View time = 21 Mar 12:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 176.94 alt = 38.07
Eye: azi = 180.00 alt = 90.00
21 M ar 13: 00
N
sun
Suncast image:
View time = 21 Mar 13:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 195.84 alt = 37.03
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 33 Cross Avenue Residential Development
Exist ing
14:00 15:00 16:00
Proposed
14:00 15:00 16:00
21 M ar 14: 00
N
sun
Suncast image:
View time = 21 Mar 14:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 213.57 alt = 33.12
Eye: azi = 180.00 alt = 90.00
21 M ar 15: 00
N
sun
Suncast image:
View time = 21 Mar 15:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 229.38 alt = 26.93
Eye: azi = 180.00 alt = 90.00
21 M ar 16: 00
N
sun
Suncast image:
View time = 21 Mar 16:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 243.34 alt = 19.16
Eye: azi = 180.00 alt = 90.00
21 M ar 14: 00
Nsu
n
Suncast image:
View time = 21 Mar 14:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 213.57 alt = 33.12
Eye: azi = 180.00 alt = 90.00
21 M ar 15: 00
N
sun
Suncast image:
View time = 21 Mar 15:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 229.38 alt = 26.93
Eye: azi = 180.00 alt = 90.00
21 M ar 16: 00
N
sun
Suncast image:
View time = 21 Mar 16:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 243.34 alt = 19.16
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 34 Cross Avenue Residential Development
Exist ing
1700 18:00
Proposed
1700 18:00
21 M ar 17: 00
N
sun
Suncast image:
View time = 21 Mar 17:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 255.96 alt = 10.42
Eye: azi = 180.00 alt = 90.00
21 M ar 18: 00
N
sun
Suncast image:
View time = 21 Mar 18:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 267.86 alt = 1.18
Eye: azi = 180.00 alt = 90.00
21 M ar 17: 00
N
sun
Suncast image:
View time = 21 Mar 17:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 255.96 alt = 10.42
Eye: azi = 180.00 alt = 90.00
21 M ar 18: 00
N
sun
Suncast image:
View time = 21 Mar 18:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 267.86 alt = 1.18
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 35 Cross Avenue Residential Development
Shadow Diagrams for 21 s t December
Exist ing
8:00 09:00 10:00
Proposed
08:00 09:00 10:00
21 Dec 08: 00
N
Suncast image:
View time = 21 Dec 08:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun is not up
Eye: azi = 180.00 alt = 90.00
21 Dec 09: 00
N
sun
Suncast image:
View time = 21 Dec 09:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 139.19 alt = 5.24
Eye: azi = 180.00 alt = 90.00
21 Dec 10: 00
N
sun
Suncast image:
View time = 21 Dec 10:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 152.01 alt = 10.52
Eye: azi = 180.00 alt = 90.00
21 Dec 16: 00
Suncast image:
View time = 21 Dec 16:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun is not up
Eye: azi = 180.00 alt = 90.00
21 Dec 09: 00
Suncast image:
View time = 21 Dec 09:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 139.19 alt = 5.24
Eye: azi = 180.00 alt = 90.00
21 Dec 10: 00
Suncast image:
View time = 21 Dec 10:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 152.01 alt = 10.52
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 36 Cross Avenue Residential Development
Exist ing
11:00 12:00 13:00
Proposed
11:00 12:00 13:00
21 Dec 11: 00
N
sun
Suncast image:
View time = 21 Dec 11:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 165.66 alt = 13.89
Eye: azi = 180.00 alt = 90.00
21 Dec 12: 00
N
sun
Suncast image:
View time = 21 Dec 12:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 179.82 alt = 15.07
Eye: azi = 180.00 alt = 90.00
21 Dec 13: 00
N
sun
Suncast image:
View time = 21 Dec 13:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 193.98 alt = 13.95
Eye: azi = 180.00 alt = 90.00
21 Dec 11: 00
Suncast image:
View time = 21 Dec 11:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 165.66 alt = 13.89
Eye: azi = 180.00 alt = 90.00
21 Dec 12: 00
Suncast image:
View time = 21 Dec 12:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 179.82 alt = 15.07
Eye: azi = 180.00 alt = 90.00
21 Dec 13: 00
Suncast image:
View time = 21 Dec 13:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 193.98 alt = 13.95
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 37 Cross Avenue Residential Development
Exist ing
14:00 15:00 16:00
Proposed
14:00 15:00 16:00
21 Dec 14: 00
N
sun
Suncast image:
View time = 21 Dec 14:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 207.65 alt = 10.63
Eye: azi = 180.00 alt = 90.00
21 Dec 15: 00
N
sun
Suncast image:
View time = 21 Dec 15:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 220.50 alt = 5.39
Eye: azi = 180.00 alt = 90.00
21 Dec 08: 00
N
Suncast image:
View time = 21 Dec 08:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun is not up
Eye: azi = 180.00 alt = 90.00
21 Dec 14: 00
Suncast image:
View time = 21 Dec 14:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 207.65 alt = 10.63
Eye: azi = 180.00 alt = 90.00
21 Dec 15: 00
Suncast image:
View time = 21 Dec 15:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun: azi = 220.50 alt = 5.39
Eye: azi = 180.00 alt = 90.00
21 Dec 16: 00
Suncast image:
View time = 21 Dec 16:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun is not up
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 38 Cross Avenue Residential Development
Exist ing
1700 18:00
Proposed
1700 18:00
21 Dec 08: 00
N
Suncast image:
View time = 21 Dec 08:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun is not up
Eye: azi = 180.00 alt = 90.00
21 Dec 08: 00
N
Suncast image:
View time = 21 Dec 08:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun is not up
Eye: azi = 180.00 alt = 90.00
21 Dec 17: 00
Suncast image:
View time = 21 Dec 17:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun is not up
Eye: azi = 180.00 alt = 90.00
21 Dec 17: 00
Suncast image:
View time = 21 Dec 17:00
Site Latitude = 51.48
Longitude diff. = -0.45
Model Bearing = 0.00
Sun is not up
Eye: azi = 180.00 alt = 90.00
20841
20841-VCE-ZZ-XX-RP-SU-001 39 Cross Avenue Residential Development
6. Sunlight to Amenity Spaces
Summary of Results for Amenity Spaces
For Cross Avenue we have carried out an evaluation of the roof terraces within the site along with the overall site.
In addition we have evaluated the gardens of adjacent dwellings on St. Margaret’s Road.
The BRE guidance is the same for both public and private amenity areas in that at least 50% of the area should
receive at least 2 hours of sunlight on March 21st.
Sunlight exposure was evaluated by generating a 1m2 grid across each amenity area and utilizing hourly solar
shading data to produce the exposure results in hours and percentage of available hours for the specified period.
To ensure an additional level of robustness for the design the adjoining gardens were evaluated, excluding the
mature trees.
The results show that all amenity spaces evaluated exceed BRE guidelines that at least 50% of an amenity area
should receive a minimum 2 hours sunlight on March 21st.
Figure 29: Areas evaluated
Figure 30: Overview of model
Within Development Site
Block Amenity Space % Area > 2hrs sunlight BRE Threshold Compliant
Block B Roof Terrace 1 97.8% 50% Yes
Roof Terrace 2 100% 50% Yes
Block C Roof terrace 100% 50% Yes
Site Grounds 94% 50% Yes
Table 12: Sunlight to amenity spaces within the proposed development
Adjacent Dwell ings
Block % Area > 2hrs sunlight > 50% receives
2 hours of
sunlight
Reduction
in sunlit
area is <
20%
Compliant
Existing Proposed Ratio
Goleen 95.4% 94.2% 98.7% Yes Yes Yes
Little Oaks, 1 St. Margaret’s
100% 100% 100% Yes Yes Yes
2 St. Margaret’s 92.6% 88.5% 95.5% Yes Yes Yes
3 Dunamase, St Margaret’s
100% 97.8% 97.8% Yes Yes Yes
Table 13: Sunlight to surrounding residential amenity spaces
20841
20841-VCE-ZZ-XX-RP-SU-001 40 Cross Avenue Residential Development
Amenity Spaces within the Proposed Scheme
Block B
Figure 31; Overview of Block B
Figure 32; Block B terraces - Area receiving at least 2 hours sunlight on March 21st
Amenity Space Area Area > 2hrs sunlight BRE Threshold Compliant
(m2) (m2) (%)
Roof terrace 1 596.6 583 97.7% 50% Yes
Roof Terrace 2 273.1 273.1 100% 50% Yes
Table 14; Sunlight results for Block B
Block C
Figure 33; Overview of Block C
Figure 34; Block C terraces – Area receiving at least 2 hours sunlight on March 21st
Amenity Area Area Area > 2hrs sunlight BRE Threshold Compliant
(m2) (m2) (%)
Roof terrace 596 596 100% 50% Yes
Table 15; Sunlight results for Block C
20841
20841-VCE-ZZ-XX-RP-SU-001 41 Cross Avenue Residential Development
Residential Development Grounds
Figure 35; Overview
Figure 36; Area receiving at least 2 hours sunlight on March 21st
Amenity Area Area Area > 2hrs sunlight BRE Threshold Compliant
(m2) (m2) (%)
Development Grounds 8,877 8,350 94% 50% Yes
Table 16; Sunlight results for proposed development
20841
20841-VCE-ZZ-XX-RP-SU-001 42 Cross Avenue Residential Development
Sunlight to Adjacent Residential Amenity Spaces
Figure 37; Adjacent dwellings
Goleen
15.5
Figure 38; Sunlight to Goleen garden post development
Figure 39: Existing sunlight to Goleen garden
Dwelling Garden
Area
(m2)
% Area > 2hrs sunlight > 50% receives
2 hours of
sunlight
Reduction
in sunlit
area is <
20%
Compliant
Existing Proposed Ratio
Goleen 1,725 95.4% 94.2% 98.7% Yes Yes Yes
Table 17: Sunlight to Goleen garden
20841
20841-VCE-ZZ-XX-RP-SU-001 43 Cross Avenue Residential Development
Litt le Oaks, 1 St. Margaret’s
1
Figure 40: Sunlight to 1 St. Margaret’s garden post development
Figure 41: Existing sunlight to Goleen garden
Dwelling Garde
n Area
(m2)
% Area > 2hrs sunlight > 50%
receives 2
hours of
sunlight
Reduction
in sunlit
area is <
20%
Compliant
Existing Proposed Ratio
Little Oaks 1 St. Margaret’s
358 100% 100% 100% Yes Yes Yes
Table 18: Sunlight to 1 St. Margaret’s garden
2 St. Margaret’s
Figure 42: Sunlight to 2 St. Margaret’s garden post development
Figure 43: Existing sunlight to 1 St. Margaret’s garden
Dwelling Garden
Area
(m2)
% Area > 2hrs sunlight > 50%
receives 2
hours of
sunlight
Reduction in
sunlit area is
< 20%
Compliant
Existing Proposed Ratio
2 St. Margaret’s
218 92.6% 88.5% 95.5% Yes Yes Yes
Table 19: Sunlight to 2 St. Margaret’s garden
20841
20841-VCE-ZZ-XX-RP-SU-001 44 Cross Avenue Residential Development
3 Dunamase, St. Margaret’s
Figure 44: Sunlight to 3 St. Margaret’s garden post development
Figure 45: Existing sunlight to 3 St. Margaret’s garden
Dwelling Garden
Area
(m2)
% Area > 2hrs sunlight > 50%
receives 2
hours of
sunlight
Reduction
in sunlit
area is <
20%
Compliant
Existing Proposed Ratio
3 Dunamase St. Margaret’s
198 100% 97.8% 97.8% Yes Yes Yes
Table 20: Sunlight to 3 St. Margaret’s garden
20841
20841-VCE-ZZ-XX-RP-SU-001 45 Cross Avenue Residential Development
Appendix 1 – Point Cloud Survey Drawing