Logbook Wk7 Jiawei CHEN
Studio  Activities
Studio  Activities
Studio  Activities
Studio  Activities
Summary of E-‐Learning •
Three different strategies to prevent water penetrating into a building:
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Common techniques used to remove openings
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Keeping Water from openings:
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Remove openings Keep water away from opening Neutralize the forces that move water through openings
Sealants (e.g. silicone) Gaskets (e.g. preformed shapes made form artificial rubbers etc.)
-‐ Grading roofs so that the water is collected in gutters which then discharge the water to Downpipes and storm water systems -‐ Overlapping cladding and roofing elements (e.g. weatherboards and roof tiles) -‐ Sloping the ground surface away from the walls at the base of buildings (to allow any water to run away from the building)
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Neutralizing the forces:
-‐ Gravity strategies: use slopes and overlaps to carry water away from the building using the force of gravity -‐ Surface tension and capillary action strategies: typically use a drip or a break between surfaces to prevent water clinging to the underside of surfaces (such as a window sill or parapet capping)
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Momentum:
- Gaps constructed in complex labyrinth shapes slow the momentum of the moisture and helps to deflect the water away from the gap entry.
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Air pressure differential strategies:
Rain screen assemblies: If an air barrier is introduced on the internal side of the labyrinth, a ventilated and drained Pressure Equalization Chamber (PEC) is created and the water is no longer “pumped” to the inside of the assembly
Controlling heat:
Conduction Radiation Thermal mass
Glossary • •
Drip: .
• Vapor barrier :
• Gutter: a structural element supported at only one end. (Newton, 2014). •
Parapet:
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A type of roof frame consist of a series of braced rigid frames with purlins for the roof and girts for the walls. (Newton, 2014).
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Down pipe: The part that extends beyond the wall of a building. (Collinsdictionary.com, 2014).
• Flashing: a combination of 2 or more metals. (Newton, 2014). • •
Insulation: “the underside of an overhanging roof eave”. (Ching, 2013).
• Sealant: a technique that use silicone to seal the openings in the building ” (Newton, 2014).
Bibliography Ching, F.(2013). Building Construction Illustrated. Wiley & Sons, Inc. Newton, C. (2014). W07_c1 Detailing for Heat and Moisture Retrieved from: http://www.youtube.com/watch?v=Lhwm8m5R_Co&feature=youtu.be Newton, C. (2014). W07_m1 Rubber Retrieved from: http://www.youtube.com/watch?v=OPhjDijdf6I&feature=youtu.be Newton, C. (2014). W07_m2 Plastics Retrieved from: http://www.youtube.com/watch?v=5pfnCtUOfy4&feature=youtu.be Newton, C. (2014). W07_m3 Paints Retrieved from: http://www.youtube.com/watch?v=WrydR4LA5e0&feature=youtu.be