Building
Performance
Case Study: Toondah Harbour, Cleveland
Building physics conceptual analysis
Building
Performance
www.building-performance.com.au

Building Physics Conceptual Analysis– Outline design
Scope produced
A building physics concept report in word
format and JPG of imagery used for:
• Mass modelling of a single concept or
imported model.
• Site specific temperature, humidity,
irradiance and wind history annual and
monthly trends.
• Concept CFD analysis of mass flow site.
• Solar irradiance mapping.
• Detailed analysis commentary.
Aims
A sample project to demonstrate the level
of service Building-Performance offer
for climatic site analysis, comparative
concept energy performance reporting
and conceptual CFD.
Context: Toondah Harbour
Sample Project: Toondah Harbour – Priority development
area proposed by Redland city council, current location
of ferry terminal to visit Stradbrooke Island.
Building
Performance
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From Only $1,500
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services@building-performance.com.au

The site is located approximately 50km south east of Brisbane in
Cleveland. The nearest relevant weather station for comparative
analysis is 606554 – Manly.
The site dry bulb temperatures are predominantly between 18-24C with
peaks of up to 31C (Jan) and lows of 6C (May). Diurnal (day vs night)
swing is limited to 6-10C all year round. Direct solar is 800 w/m2 in
summer, and never below 600 w/m2. There is high humidity all year
round, particularly in the morning. Suggest ensure good ventilation
flow year round to avoid internal mould issues.
Building
Performance
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Climate
Temperature Bins
HumidityIrradiance and Diurnals
Site Weather station
Dry Bulb Temperature
1% & 99% Dry Bulb

Annually the most frequent winds are from a southerly direction
at a 6-7 knots. The strongest infrequent winds are 20 knot
westerly - typical in September.
Isolation of the afternoon winds (12-5pm) shows predominantly 5-
10 Knot north and easterlies as would be expected due to the sea
breeze. Isolation of summer months only shows dominance from the
south-easterly direction. Suggest targeting cross-ventilation
with lead openings on NE façade where possible.
Building
Performance
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AfternoonsSummer
Wind
Speeds
Hours
Monthly
Annual

The existing harbour is
marginally off the north-
south axis. Summer creates
little shade between
building at peak. Winter
north aspects shows building
will shadow all other
buildings all day.
Sample H shaped mass model
shows the south-easterly
winds potentially causing a
high wind tunnelling effect
to the western entrance.
Form Orientation
Building
Performance
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SSE Ground X Axis Eaves X Axis
Summer Morning Summer Peak Summer Evening Winter Morning Winter Evening
NW Y Axis
Roof X Axis
NE Z Axis

Form Irradiance
Building
Performance
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The developed H shaped mass model shows improved limiting of summer gain all
year round, except on eastern 45 deg slices. Winter sun to inner courtyard
will be very little. Suggestion would be to reduce the north-west overhang.
Summer AM Irradiance
Summer Video Winter Video
Winter AM IrradianceSummer PM Irradiance Winter AM Irradiance

Building
Performance
Case Study: Toondah Harbour, Cleveland
Building physics conceptual analysis
Building
Performance
www.building-performance.com.au
All that for Only $1,500
Analyse your site today
Contact us
services@building-performance.com.au
All imagery and concept used are for demonstration purposes of possible design only