The concept uses a skillion roof design, on two tiers at separate scales (Home Design Directory 2012).

More vulnerable to dynamic, wind loads as opposed to the other 6 major load bearing points which would be subjected to a slightly higher dead load amount.

Major load bearing points.

Structural Concept

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Materials

Construction

Recycled corrugated galvanised steel

Positives-Strong in tension and compression-Light weight-High fire rating (Corrugated Metal Roofing 2010)-Resistance to corrosion-Aesthetically pleasing finish

Negatives-Can be dented from hail, debris etc.

Plank and Beam Framing-Ridge beam at the apex of the roof structures-Rafters that run down the roof slope-Purlins that run horizontally and attach to the rafters

→ 610-1830mm spacing (Ching 2008 p.7.10)

-Supports necessary where windows are situated

Timber Framing

-Tensile and compressive strength-Potentially sustainable material-Stores carbon-Low embodied energy

Timber (Mecca Racking Solutions 2013)

Corrugated Steel (China Suppliers 2013 )

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Aesthetics

Function

-Repetition of form in the two roof structures-Steel/ wood contrast-Windows provide views/ preferable lighting form interior and add to the aesthetics of the exterior structure

-Passive thermoregulation with north facing windows

→ Allows winter sun in to heat the space

→ Overhangs protect from overexposure to summer sun

-Slope allows ease for water run off, discouraging any rain loads-Addition of window space could decrease in lighting costs/emissions.

Shading (Australian Government 2010)

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Australian Government 2010, ‘4.4 Shading’, retrieved 30 th August 2013, <http://www.yourhome.gov.au/technical/fs44.html>

China Suppliers 2013, 'Corrugated Steel Sheet', retrieved 30 th August 2013,<http://alfsteelstructure.en.made-in-china.com/product/dqBmYawThvrA/China-Corrugated-Steel-Sheet-ALF-0339-.html>

Ching, F 2008, Building Construction Illustrated, John Wiley & Sons Inc., Hoboken.

Corrugated Metal Roofing 2011, ‘Benefits of corrugated Roofing’, retrieved 30th August 2013, <http://www.corrugatedmetalroofing.net/benefits.html>

Home Design Directory 2012, ‘Environmental House Design’, retrieved 30th August 2013, <http://www.homedesigndirectory.com.au/articles/environmental-house-design.shtml>

Nordic Galvanisers 2013, ‘Corrosion of Zinc Coatings’ <http://www.zincinfo.se/foretag/corrosion.htm>

Mecca Racking Solutions 2013, ‘Industries’, retrieved 30 th August 2013’,<http://www.mecaracking.com.au/industries/timber>

Reference List

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