Learning summary Strategies to prevent water from entering buildings (Newton, 2014) 1.
Remove the opening: can do this by using sealants (silicone) or gaskets (artificial rubber) to fill in the area (mostly in between panels and around openings such as windows and doors). Both of the materials are subject to deteriorate over time from weathering and will need maintaining.
Week 7 2. Keep water away from openings: do this with sills, pitch, eaves, gutters, downpipes, capping, storm water systems, overlapping cladding and wall flashing. These solutions are made from several different materials; for example downpipes could be made from PVC (thermoplastic), steel for wall flashing and masonry tiles, corrugated steel or poly carbonate overlapping cladding on roofs and exterior walls.
3. Neutralise the Forces that move water through openings: this occurs from gravity, capillary action, air pressure, momentum and surface tension. This can be prevented by the use of drips, flashing, slopes, overlaps, and double cavity walls (bricks).
Figure 1 (Ching, 2008, p8.10)
Domes:
Figure 2 (Ching, 2008, p.8.10)
Task: Site Visit
Why choose Cellulose Insulation?
Week 7 studio
Site details: -
There are also storm water and sewage pipes that run through the basement. Need to be at angle to keep things moving,
Located in South Yarra Builder: Hacer Architect: Powell and Glen Architects Residential building with basement(car park) Budget 17million
First section of the building we saw was the Basement/Car Park: -
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Ceiling covered in Cellulose Insulation(Enviroflex, 2014) which resembles a paper mache consistency to prevent noise of cars and people travelling through to above floors Used for its easy installation of being sprayed on and then hardened overtime- no need for framing or waiting
Walls
Level 1: Apartment 1: Most complete apartment- done before the others to be used as the test/trial apartment to find things that work and don’t work for the following apartments. Pink Fire grade paint
The basement walls were made out of concrete blocks, shotcrete (sticky sprayed on concrete,) and precast walls (not shown in image). The concrete blocks were a decision made during the construction process to reduce the need for a crane as it was too difficult and time consuming.
First layer of floor boards are used as something for the top layer to nail into as they cant go directly into the concrete slab underneath.
Week 7 studio The building is mainly built from steel structural frames which you can see exposed in the wall. Steel was propbaly chosen due to: -
The accuracy (dimensionally) it provides, which in a high end building, is expected Won’t warp reducing the risk of cracking walls and wavy roof lines Light but strong Can cover greater spans then a material such as timber Isn’t affected by weather during construction phase = time efficient
Level 2: Lift shaft Entrance To achieve an expensive, luxurious feel but cut cost certain techniques were used such as the following. The lift entrance is made to look thicker by adding nonstructural aerated concrete (less expensive material) to the solid concrete walls. This material is used as, even though the make-up is mainly air, the material will still feel solid if you were to tap it. The end result will conceal this so it seems as if it’s one solid wall.
Week 7 studio Level 3: Penthouse
Insulation: Yellow glass wool fleece insulation – they chose this insulation because:
Extra support beams where dividing doors will be placed added; as the roof structure wouldn’t be able to support the weight of both the dead and live loads of both the roof, structure and the sliding doors, thus have separated the two members.
References and Glossary
Week 7
Glossary:
References
Sarking: a wrap that goes around a building for
Ching, F. D.K. (2008). Building Construction illustrated. Hoboken, NJ: John Wiley & Sons, Inc. p.8.10
moisture and heat protection. Also helps to prevent condensation.
Thermoplastic: Hard plastics such as Polyethylene (insulation), Perspex, acrylic, PVC (piping), vinyl and polycarbonate(roofing) which can come in all different shapes and sizes and in have the option of being remoulded (Newton, 2014/04/15). Thermosetting: A type of Plastic that can only be moulded and shaped once. This type of plastic can be used for surface finishes such as melamine formaldehyde (laminex) and insulation panels (styrene) (Newton, 2014/04/15)
Elastomers: Synthetic/artificial rubbers including EPDM, Neoprene and Silicone. Can be used for thing such as control/expansion joints, sealants, waterproofing membranes and hosing.
Enviroflex. (2014). K-13Cellulose. Retrieved from www.enviroflex.com.au/acoustic-2/k-13cellulose/?gclid=CJ3f-8616cACFYeXvQodYHYAkw Facilitiesnet. (2014). Building Envelope: Sealing Leaks and Stopping Thermal Bridging. Retrieved from http://www.facilitiesnet.com/energyefficiency/article/B uilding-Envelope-Sealing-Leaks-and-Stopping-ThermalBridging--9429 Newton, C. (2014, April 15). W07_m2 Plastics. Retrieved from http://www.youtube.com/watch?v=5pfnCtUOfy4&featu re=youtu.be Newton, C. (2014, April 16). W07_c1 Detailing for Heat and Moisture. Retrieved from http://www.youtube.com/watch?v=Lhwm8m5R_Co&fea ture=youtu.be Procell Insulation. (2013) Benefits of Cellulose Insulation. Retrieved from http://procellinsulation.com/benefits/ Sager. (n.d.) Glass wool insulation materials…warmly recommended. Retrieved from www.sager.ch/images/upload/Prospekt_Saglan_e_729. pdf