We can provide "site specific" shadow
diagrams for projects anywhere in the world.
Projects outside of NSW have included Cairns,
Brisbane, Auckland (NZ) and Venice.
for SHADOW FLICKER diagrams, see Photomontages
/ Wind Turbines
******
ACCURACY TEST OF SHADOW
DIAGRAMS
We were asked to provide vertical
shadow diagrams
and present them in a manner that was
visibly accurate and easily understood.
Shadow Diagrams in plan, Vertical Shadow Diagrams,
View Loss Objections, Photomontages. A client had a neighbour state that the
shadow diagrams his architect had previously provided of a kitchen window were
inaccurate. There was a concern that all future diagrams would be dismissed
"out of hand" because of this.
We provided a sheet with the following images that
successfully illustrated the accuracy of our 3D computer model and of the shadow
diagrams. (Site access was unavailable).
2008 - Shadow Diagrams with trees
We create 3D trees that reflect the outline of
actual trees on site to ascertain the extent of existing shadow impact.
We provide shadow diagrams with trees and
without.
************
The photograph below was taken on 3/9/06 at 9:15am
of the kitchen window.
We ran shadow for the same day and time on
our 3D computer model.
The elevation drawing shows the computer
shadows produced for the same time were identical.
This is an isometric perspective of the
model and same shadows
Below is an isometric perspective of the
existing neighbours and proposed alterations.
Neighbours buildings are typically drawn up
from photographs, aerial (spatial) information, and boundary offsets measured on
site by laser.
We then provided individual A4 sheets of
shadows for every 15 minutes between 9am and 3pm Winter Solstice,
with and without the neighbours
pergola.
Shadow Diagam (2pm Winter Solstice) in Plan
showing
EXISTING SHADOWS
PREVIOUSLY APPROVED SHADOWS
AND
ADDITIONAL SHADOWS FROM PROPOSED DEVELOPMENT
*****
Land & Environment Court
We have provided this same sort of test for
Land & Environment Court Appeals. Specifically, the court rang us from on
site at Ashfield. They took a photograph of the shadows on a neighbours wall.
1 hour later, we faxed to the court, an isometric perspective of our model
showing the shadows for the same time. The court then asked us to provide
shadow diagrams for 2 roof alternatives. We faxed these diagrams direct to the
court within the hour.
Test by Woollahra Council Townplanner Winter
Solstice 2005
A neighbour of a Vaucluse property was concerned
about additional shadow impact from a proposed alteration. Pam drew up the
concerned neighbours courtyard and existing building and windows without survey
information or plans. The courtyard level was obtained by dropping a tape over
the boundary fence.
At 3pm on 21/06/2005 Winter Solstice
a Woollahra Council Townplanner compared our Winter Solstice 3pm vertical shadow
diagram with shadows on site . (We had previously provided Council with a
diagram with measurements). Our diagram and the shadows were found to be within
10mm of each other which confirmed the high degree of accuracy we provide.
The process of producing shadow diagrams for Council
submissions, objections, or Land & Environment Court Appeals involves the
construction of a 3D model of the existing and neighbouring development and the
proposed.
Base Data is used such as Surveys, Architectural plans,
Photographs, Orthos and Site Visits. Where survey information is unavailable
(i.e. neighbouring properties), a 3D model is built up from photographs and
"tested" by inserting the model into a photograph and overlaying. Ridge height
and building footprints can be accurately verified in this manner.
Shadows can be cast on a flat site, contoured site, on
walls, windows, or balconies etc. Shadows can be produced for any minute, of
any day, of any month, year or location. Locations are set by Longitude,
Latitude and GMT.
Final format for Council Submissions generally consist
of a plan view of proposed development showing both existing and proposed
shadows, highlighting any incremental affect by the proposed development and any
solar access gained.
As our computer models are 3D, we can provide shadow
diagrams for any element or elevation. Typically we would provide for a Coucil
D.A. Application:-
A3 or A4 shadow diagrams in plan
for:-
Winter Solstice at 9am, 12n and 3pm, and an
Equinox at 9am, 12n and 3pm
A4 Vertical shadow diagrams:-
Winter Solstice at 9am, 12n and 3pm or hourly if
needed. (we can run shadows for any
year/month/day/hour/minute/second.
Vertical shadow diagrams are illustrated as an
isometric perspective of any neighbouring building that may be impacted.
