20° south broome house
TRANSCRIPT
CB01Case Study 20° South
Broome Houseby Casey Brown Architecture
www.creativespacesaustralia.com.au
Creative Spaces Australia
01
CREATIVE SPACES CB01 / 20° SOUTH BROOME HOUSE CASEY BROWN ARCHITECTURE
The design of this 3 bedroom house seeks to continue the
successful tradition of tropical design established in northern
Australia particularly in the early houses of Broome in WA. Its
distinct character is achieved through a vernacular style well
suited to the tropical climate.
This design is a progressive environmental solution, incorporating
the lifestyle needs of the 21st century. Aesthetically the
building’s form and materials are architecturally conceived with
an appreciation of traditional timeless features. Its plan while
thoroughly modern has built-in " exibility for a variety of
occupants and locations.
The vernacular verandah concept has been expanded to form
a cruciform plan creating an indoor / outdoor central kitchen
based on the concept of the external Asian kitchen. Only sleeping
areas are enclosed with the focus being the internal courtyards,
verandah and garden.
Introduction
02
CREATIVE SPACES CB01 / 20° SOUTH BROOME HOUSE CASEY BROWN ARCHITECTURE
- Open plan kitchen
- Walk-in pantry
- Living / Dining
- Open / enclosed verandah
- 2 garden courtyards
- 3 bedrooms
- 2 bathrooms
- Separate laundry
- Carport
- Rain water tanks
- Solar hot water
- Solar electric system
Standard Features:
Tropical
Subtropical
15
20
25
30
35
40
RecommendedClimate Zones:
130m2
90m2
Enclosed building space
Covered verandah / decks
Areas:
$562,000
EstimatedConstruction Cost:
Note: Indicative construction cost in Australian dollars only. Purchase of land and document package not included. Refer to price description for details.
Exterior View
Recommended lot size
Minimum lot width
Minimum lot length
Lot Size:
>560m2
16m
35m
03
CREATIVE SPACES CB01 / 20° SOUTH BROOME HOUSE CASEY BROWN ARCHITECTURE
Plan
Fridge
Laundry
Linen
Oven
Pantry
Robe
Rain water tank
Storage
Washing machine
Safe room
F
LDRY
LN
OV
P
R
RWT
ST
W
S
Legend:
Covered / shaded
space
Internal space
Wet areas
Storage
GARDEN
COURTYARD
GARDEN
COURTYARD
KITCHEN
P/S DININGBATH
ENCLOSED
VERANDAH
LIVING2.8 x 4.0m
M BED2.8 x 4.0m
ST R
REAR
GARDEN
ST
ST ST
OV
F
WRWT RWT
RWT RWT
LDRY BATH
RR ENTRY
STREET
CARPORT
BED 2.8 x 4.0mBED 2.8 x 4.0m
N
0 2 51
04
CREATIVE SPACES CB01 / 20° SOUTH BROOME HOUSE CASEY BROWN ARCHITECTURE
Elevation
East
05
CREATIVE SPACES CB01 / 20° SOUTH BROOME HOUSE CASEY BROWN ARCHITECTURE
Elevations
South
West
North
06
CREATIVE SPACES CB01 / 20° SOUTH BROOME HOUSE CASEY BROWN ARCHITECTURE
Interior Views
01
02
Key Plan
02
01
07
CREATIVE SPACES CB01 / 20° SOUTH BROOME HOUSE CASEY BROWN ARCHITECTURE
Environmental Control
The design of plan and section maximise natural ventilation.
Open ceiling spaces encourage the movement of air. The roof
rises to the centre and incorporates louvres to allow warm air to
escape through convection. Cool air is being drawn in from the
shaded courts and under " oor areas.
The house is elevated o# the ground to keep the building dry
and free of damp.
Landscaping is a vital part of the design. It creates a visual
intersetion in the heart of the house and is an important shading
device.
The elevations are characterised by adjustable $ ns, screens and
louvres. They provide privacy, security and keep insects out.
Covered / shaded
verandah
Wind is funnelled
through the central
courtyards
Covered / shaded
carport
Breezeway
Wind catchers
08
CREATIVE SPACES CB01 / 20° SOUTH BROOME HOUSE CASEY BROWN ARCHITECTURE
Energy Management
The building’s design combines passive solar features with active
solar devices to minimise energy consumption.
Wide eaves and shutters to the north, east and west protect
openings from direct sunshine. The cruciform con" guration of
the plan opens the house up to prevailing winds to naturally
ventilate each space.
Projecting " ns to the facades capture cool breezes from
the shaded garden courtyards. The central high ridge takes
advantage of convection venting removing any hot air from the
house.
Enclosed rooms can be mechanically air conditioned if desired.
Living areas are orientated to the north and west to bene" t from
the winter sunshine.
* Photovoltaic panels can be integrated on the northern slope
of the roof, with a potential production of up to 4 kWh using 16
panels of 1650 x 1000mm photovoltaic panels.
** All hot water will be solar heated with collectors on the
northern roof and tanks located under the # oor. Both PV and
solar hot water systems take advantage of the 18 degree roof
pitch, the optimum for solar collection in tropical/sub tropical
latitudes.
Photovoltaic panels on
north facing roof above *
Solar hot water system on
north facing roof above**
LED lighting system
throughout
Energy e$ cient
appliances
Photovoltaic Panels
Solar hot-water system
09
CREATIVE SPACES CB01 / 20° SOUTH BROOME HOUSE CASEY BROWN ARCHITECTURE
Fire sprinklers
(Bush" re protection)
Rain water stored from
house roofs x 4
Water reduction taps/
toilets (3-star minimum)
Water e# cient washing
machine
Underground rain water
tank
Rain water tank (14,000L)
Rain water tank (3,500L)
Rain water
Cold water
Hot water
Water Management
Courtyard garden above ground tanks
Underground kitchen tank
Roof catchment area
14,000 L
14,000 L
280m2
Rainwater collected from the roof will be stored in the following
tanks for use in bathrooms, laundry and garden :
Total 28,000 L
10
CREATIVE SPACES CB01 / 20° SOUTH BROOME HOUSE CASEY BROWN ARCHITECTURE
Substructure
Structure
Roof
Linings
Screens
Floors
External Works
Equipment
Steel posts set in concrete pads with an open
accessible sub-" oor to the building
Highly durable galvanised steel structure
including wall framing (studs), roof rafters
and roof battens
Corrugated zinc-alloy roof sheets.
1/2 round gutters connected up to water
storage tanks.
Small pro# le, zinc-alloy roof sheeting / # bre
cement / timber, inside and outside
Insect and security screens to be heavy
gauge stainless steel woven mesh.
Screens to be # xed to all open walls including
the verandah, between solid walls and
ceilings, behind shutters, # ns and blades.
Wind catchers to be zincalume mini
corrugated cladding on metal frames.
External " oors: recycled hardwood, open
joins with mosquito mesh under
Internal " oors: boards to be laid tight and
sealed with non toxic tongue oil # nish
Tank water storage: corrugated zincalume
Solar hot water system
Photovoltaic panels
Materials have been selected to maximise their longevity and
minimise their maintenance. They can be varied depending
on personal choice, cost and location. The repeated use of the
same modular components throughout the design ensures an
economical building process.
Schedule of materials and ! nishes:
General:
03
01 02
0504
01
02
03
04
05
Legend:
Corrugated roof sheeting
Mini Corrugated cladding
Timber cladding
Timber decking
Fibre cement lining
Materials
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CREATIVE SPACES CB01 / 20° SOUTH BROOME HOUSE CASEY BROWN ARCHITECTURE
Estimate Cost Calculations
Trade Amount
Ground works 3,000
Sub Total 3,000
Site Preparations and Early Works
Concrete 12,293
Structural steel work 30,600
Water proo" ng 600
Insulation 6,880
Roof sheeting / Rainwater disposal 31,130
Windows / Glazing 66,275
Doors / Frames 21,205
Carpentry 47,200
Sub Total 216,183
External wall cladding 18,240
Internal wall lining 53,900
Ceiling 23,940
Tiling / Paving -
Painting 9,140
Metal work 8,120
Joinery 17,500
Appliances 3,000
Fixtures / Sanitary wares 5,480
Sub Total 139,320
Building Structure
Electrical installation 11,900
Hydraulic installation 19,750
Rainwater storage tanks 7,900
Solar hot water system 6,150
Solar electric system 6,000
Sub Total 51,700
External works -
Landscaping -
Sub Total -
Building Services
Total cost excl. GST 511,531
GST 10% 51,154
Total cost incl. GST 562,685
Sca# olding 5,000
Preliminaries 12% 49,825
Margin / Overhead 10% 49,503
Sub Total 101,328
Preliminaries/Overheads/Pro! ts
External works / Landscaping
Finishes / Fixtures / Fittings
A" ordability
Note:
Above pricing is current for the year 2014, based on
construction cost in Brisbane, Queensland. However, the
construction cost will vary depending on location, speci" cs of
the site, choice of materials, etc. To obtain an accurate " gure, it
is recommended that a minimum of 2 local quality builders be
asked to tender for your speci" c requirements.
Enclosed Building
Covered Verandah
Total
The clever use of space (making sure the building is not too big
but big enough) allows a compact building design which in turn
ensures building a# ordability.
80m2
90m2
170m2
12
CREATIVE SPACES CB01 / 20° SOUTH BROOME HOUSE CASEY BROWN ARCHITECTURE
Site Variations
Case study house 01 is designed for near level North to South
blocks. The design can be adapted to suit the speci" cs of the
site, within certain limits. This includes adaptations to gradient
(slope), orientation, access, retained trees, views and adjoining
buildings.
It is recommended that siting is done in consultation with the
architect to ensure optimum solar access, shading and general
consideration of other site features.
Maximum front to back foot print slope to be 5 degrees.
Addition of steps at front and rear depending on slope. Cross
fall of up to 5 degrees can be accommodated in the design.
Sloping Block:
Extra bedroom or home o# ce can be achieved by enclosing
corner of rear verandah.
Addition:
Entry is recommended via South West, South or South East with
North to South orientation option.
Orientation:
Entry
N
NENW
S
Entry
SW SE
5°Entry
Entry5°