Activity: IN DETAIL (PART TWO) Week 9 This is an isometric
drawing of our case study building. The A3 isometric drawing is attached at the back of the journal.
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Week 9 isometric drawing of Queens College
Flashing would be installed to act as a barrier to keep water out. If water can penetrate into the house framing it can result in severe mold, decay, and overall serious and expensive damage (Decks.com, 2010). Back flashing is important for cracks or leaks. If flashing is not applied properly, it can have termite infiltration or water damage.
Decks.com. 2013. Flashing the Ledger Board. [image online] Available at: https://www.decks.com/deckbuilding/Flashing_the_Ledger_Board [Accessed: 12 Oct 2013].
Deck joists are boards usually made out of pressure treated lumber. This foundation is usually attached to the side of a house or some sort of structure. The joists are hung from a header board, which is attached to the house (Living, 2012). At the opposite end, there is a rim joist. The rim joist is the end piece of the joist system that caps all of the ends. http://www.advantagelumber.com/ipe_decking_blog/pro-‐ installation-‐tip-‐deck-‐joist-‐waterproofing
Sustainability: Embodied energy may include (Yourhome, 2010): • The energy used to transport the materials and workers to the building site. • The energy input in making the materials (such as factory/office lighting, and the energy used in making and maintaining the machines that make the materials, etc.). • The embodied energy of urban infrastructure (roads, drains, water and energy supply). The materials incorporated into a building include: • The materials used to construct the building shell. -‐ The materials used to complete the building such as bathroom and kitchen fittings, driveways, outdoor paving, etc. -‐ If materials are easy to maintain -‐ In the demolition process, whether these materials that have been used can be recycled or not (GreenSpec, 2011) Material Energy mj/kg kgCo2/kg Density kg/m3 Concrete 1.11 0.159 2400 Glass 15 0.85 2500 eTool. 2013. Life cycle of building products. [image online] Available at: http://etool.net.au/eblog/news/embodied-‐energy-‐building-‐ regulations-‐yes-‐or-‐no/ [Accessed: 13 Oct 2013].
Decisions and purpose: • Materials such as glass would be mostly based on reasons of aesthetics. As mentioned in week 8’s journal, using glass has both pros and cons. • The external decking is made from timber, there are some advantages of having timber decking (Cannyliving, 2013): -‐ it is weather resistant -‐ durable -‐ require little maintenance -‐ can also create relaxing atmosphere -‐ can level an uneven block of land -‐ softer to walk on than concrete Economic Implications: -‐ using existing foundation -‐ save cost of labour -‐ use precast concrete panels -‐ using specific materials, some that are cheaper than others -‐ using materials that will last longer in time -‐ having professionals to undertake the jobs so that the work on site are done properly and wont have to be redone ATD Constructions. 2013. Timber decking. [image online] Available at: http://atdconstructions.com.au/services-‐we-‐provide/timber-‐decking/ [Accessed: 13 Oct 2013].
PRESSURE EQUALIZATION CHAMBER
The air chamber is created by cavity walls, two skins separated by a hollow space. It is a place for the equalization of air pressure to occur and is wide enough to prevent the capillary movement of water. It can also serve as a drainage layer for any water that penetrates the rainscreen. Ching, F. 2008, Building construction illustrated / Francis D.K. Ching, Hoboken, N.J. : John Wiley & Sons, c2008; 4th ed.
The air chamber is located between the rainscreen and the air barrier system. Wind pressures induced on the rainscreen are transferred to this space as air is displaced between the outside and the chamber through the vent holes located in the rainscreen.
Building Green. 2013. Pressure equalization rainscreen. [image online] Available at: http://www.buildinggreen.com/auth/articl e.cfm/2011/10/5/How-‐Rainscreens-‐Work/ [Accessed: 2 Oct 2013].
Pressure Equalization in Rainscreen Wall Systems. 1998. [e-‐book] Canada: Institute for research in construction. p. 3. http://www.nrc-‐ cnrc.gc.ca/ctu-‐sc/files/doc/ctu-‐sc/ctu-‐ n17_eng.pdf [Accessed: 2 Oct 2013].
REFERENCES Cannyliving. 2013. Advantages and best places to build Timber Decks -‐ Canny Living. [online] Available at: http://www.cannyliving.com/timber_decking.htm [Accessed: 13 Oct 2013]. Decks.com. 2010. Flashing the Ledger Board -‐ Decks.com. [online] Available at: https://www.decks.com/deckbuilding/Flashing_the_Ledger_Board [Accessed: 12 Oct 2013]. GreenSpec. 2011. Embodied energy. [online] Available at: http://www.greenspec.co.uk/embodied-‐energy.php [Accessed: 13 Oct 2013]. Living, M. 2012. Pro Deck Installation Tip: Deck Joist Waterproofing. [online] Available at: http://www.advantagelumber.com/ipe_decking_blog/pro-‐installation-‐tip-‐deck-‐joist-‐waterproofing [Accessed: 12 Oct 2013]. Yourhome. 2010. Your Home Technical Manual -‐ 5.2 Embodied Energy. [online] Available at: http://www.yourhome.gov.au/technical/fs52.html [Accessed: 13 Oct 2013].