Log Book Week 10 Collapses and Failures Holiday Beach House Fascia The width of the fascia on the house is a problem as it isn’t possible for the painter to paint the inside face only the outside. Because the fascia faces the hot, north sun it is beginning to warp and crack. Holiday Beach House External Cladding Corrosion from salty or polluted air can be a causation of a collapse of a building. On the northern and western side of the beach house the sheets of cladding are starting to blister from the weather. In summer they get extremely hot causing the glue to become loose meaning the sheets are coming detached from the wall. These small openings allow an entry for moisture which will ultimately rot the timber wall. As the cladding is coming unstuck, so is the plywood it is attached to, and as wind gets under the sheets the come completely off. As shown above, if the cladding starts to become loose, wind can get underneath resulting in the whole sheet coming off. This is not only structurally bad for the house, but also aesthetically. http://en.wikipedia.org/wiki/Fascia_(architecture) Similar to the beach house example, this fascia is too wide. Although it does provide extra shade for the exterior of the house, it itself is difficult to paint.
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Log Book Week 10 Collapses and Failures!
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Holiday Beach HouseFascia The width of the fascia on the house is a problem as it isn’t possible for the painter to paint the inside face only the outside. Because the fascia faces the hot, north sun it is beginning to warp and crack.""
Holiday Beach House""External Cladding Corrosion from salty or polluted air can be a causation of a collapse of a building. On the northern and western side of the beach house the sheets of cladding are starting to blister from the weather. In summer they get extremely hot causing the glue to become loose meaning the sheets are coming detached from the wall. These small openings allow an entry for moisture which will ultimately rot the timber wall. As the cladding is coming unstuck, so is the plywood it is attached to, and as wind gets under the sheets the come completely off.
As shown above, if the cladding starts to become loose, wind can get underneath resulting in the whole sheet coming off. This is not only structurally bad for the house, but also aesthetically.
Similar to the beach house example, this fascia is too wide. Although it does provide extra shade for the exterior of the house, it itself is difficult to paint.
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Potential issues and hazards Issues when selecting materials:-Health and the indoor environment quality(IEQ)-Waste/recyclability -Energy use and embodied energy -Pollution -Life cycle HEALTH Oil-based paints are a health hazard as when they dry they produce a vapour that can give headaches and nausea. A more suitable option is water-based paint. When it dries it produces water vapour. Reducing the amount of chemicals and amount of dust present used in the interior of the house can also assist in health and wellbeing. To prevent dust there ares a few options:-Clean regularly-Avoid high shelves where dust may be hidden -Avoid carpets that may trap dust"
Sisal carpets are hand-woven from types of grasses. This is very environmentally friendly as grass as a renewable material.
WASTE-Uneconomical -Limited resources that may no longer exist in the near future -Takes up space and landfill -Landfills carry diseasesWhen choosing timbers, recycled and plantation timbers(such as compressed straw or carpet grass) are least wasteful. When using materials, make sure that you don’t over estimate too much. For example, if a small bathroom needs tiling, use smaller tiles to avoid cutting and wasting pieces."""When materials are made they require a lot of other materials to make them. For example, to make one tonne of concrete it takes roughly five tonnes of materials. This is quite wasteful, however we do it to save time.
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ENERGY-creates climate change, greenhouse effect-pollution from energy production -it’s wasteful A lot of energy goes into making everyday items such as phones, pens and books. This energy is called embodied energy. A plastic cup for example has a high amount of embodied energy compared to a paper cup. This is because for the plastic cup, oil has to be melted down. To reach these high melting point temperatures, machines or heaters are used which uses energy. Materials and entities that a high in embodied energy include: -aluminium-light globes(which continue to use energy to run)-overseas items have a lot of transportation energy.Positive energy consumers are:-Timber-diode light(99% light and 1% heat) A light’s only function is to produce light not heat so this is a good option.
By swapping from an incandescent light to a LED bulb, a lot of money and energy can be saved. Although the LED bulbs are quite a bit more expensive, in only 5 years you can save up to $1200.
POLLUTION!-Smog -Depletion of the ozone layer-Toxicity -Radio activity -Acid rain PVC causes pollution throughout it’s life and it is difficult to recycle at the current time.Other negative impactors are:-Cigarette smoke -Vehicle emissions -Factory pollutantsInstead of using PVC(plastic) as a flooring choice, linoleum(cork and linseed) can be used. Cork and linseed are both natural materials where plastic is factory made, ultimately producing emissions.Also, wool can be used as it also regulates interior moisture levels."
Linoleum being used instead of PVC flooring. As seen in the picture, a wooden effect can be given to the linoleum to give it the sense of being a floorboard finish. Linoleum is also cheaper than timber, hence why it’s sometimes used as a substitute.
http://www.landoncustombuilding.com/flooring.html
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LIFE CYCLE -Consider how long each material is predicted to last and how often you will or wont need to replace it-Design for reuse, recyclability and maintenance -Design for purpose and location. If the region is prone to high temperatures, protect the house with shading such as trees to avoid the use of air conditioners inside.
http://www.nycgo.com/slideshows/must-see-nyc/6/
Statue of Liberty The copper outing is connected to an iron skeleton. Copper is originally a brownish colour however, when it is exposed to the atmosphere it turns a green patina; hence the colour of the statue. It is possible to remove the patina by adding an acid, however, the green colour has become part of the iconic nature of the statue of liberty.
The iconic green patina of the Statue of Liberty. Copper exposed to the atmosphere gives the patina.
Once a material is at the end of its structural lifetime it can still be used. It can be recycled and used again instead of being wasted in landfill. As there is a limited supply of most resources, care needs to be taken to not overuse and to ensure recycling is part of the process.
""Glossary: Shear wall: Is used to resist lateral(sideways) movements on the building from external forces such as wind. Transfers these lateral loads to the ground foundation (Ching, 2008).Soft story: ‘A soft-story residential building is one that has open parking or commercial space on the first floor and housing on higher floors built prior to recent codes’. {2} Earthquakes are a common way of causing the soft story to collapse.Braced frame: A timber or steel framed that has been diagonally braced for support (Ching, 2008). Cross bracing, knee bracing and K-bracing are examples (shown to the right).Lifecycle: The total life time of a material from it’s fabrication to its disposal and whether it is recycled or not. Defect: “A deficiency in the design or construction of a building or structure resulting from a failure to design or construct in a reasonably workmanlike manner, and/or in accordance with a buyer's reasonable expectation.” {3}Fascia: A flat board covering the ends of rafters.Corrosion: The deterioration of a metal as a result of a chemical reaction. Water often reacts with metals causing them to corrode. {4}IEQ: Indoor environmental quality.!""""""""""""""
When using cable bracing, two braces are needed to stabilise the structure from lateral forces from each direction (Ching, 2008).
""References:E-learning:http://www.youtube.com/watch?v=2IqhvAeDjlg&feature=youtu.be http://www.youtube.com/watch?v=yNEl-fYRi_I&feature=youtu.be http://www.youtube.com/watch?v=FhdfwGNp_6g&feature=youtu.be IMAGES:http://www.overstock.com/Home-Garden/Hand-woven-Weaves-Natural-colored-Fine-Sisal-Rug-4-x-6/4382768/product.html?refccid=ULHR3RBQ2HPLWA2HZP5UV6GHFA&searchidx=8 http://en.wikipedia.org/wiki/Fascia_(architecture) http://inhabitat.com/video-the-led-bulb-challenge-we-upgrade-5-designer-lamps-at-icff-with-low-energy-led-bulbs/ {1} http://www.landoncustombuilding.com/flooring.html http://www.nycgo.com/slideshows/must-see-nyc/6/ {2} http://quake.abag.ca.gov/housing/softstory/ {3} http://www.irmi.com/online/insurance-glossary/terms/c/construction-defect.aspx {4} http://metals.about.com/od/Corrosion/a/What-Is-Corrosion.htm Ching, F. (2008) Building Construction Illustrated (4th ed.). Hoboken, New Jersey: John Wiley & Sons, Inc. (p. 2.22)
