Logbook Wk7 Jiawei CHEN
Studio Activities (Site Visit) Ê Steel bracing was used to stabilize the
structure above.(Please refer to Figure 1).
Steel bracing Roller Joint
Figure 2 The bridge over the two buildings are connected by pin joints and roller joints, which prevent vertical movements.
Figure 3
Figure 1
Studio Activities (Site Visit) Ê Props are installed to stabilize the floor system and
the structure of the building. After the construction work is completed, the props will be removed from the building. (Please refer to Figure 4).
The concrete panels used on site are pre-‐cast concrete. Since it is not convenient to build the concrete panels on site, concrete panels were built in factories and transported to the site. The panels were lifted by cranes and positioned by construction workers. The panels were stabilized by steel bars on the ground.(Please refer to Figure 5&6)
props
Figure 5
Figure 4 Figure 6
Studio Activities (Site Visit) Ê Figure 7 presents the pave on
the balcony of a private apartment. In between each piece of pavement material, there`s enough space for the rainwater to be drained away. Besides, the pavement material can be easily replaced if there is damage on the material. Figure 7
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:
-‐ -‐ -‐ -‐ -‐
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)
•
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:
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Air pressure differential strategies:
- Gaps constructed in complex labyrinth shapes slow the momentum of the moisture and helps to deflect the water away from the gap entry. - -
• - - -
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:
A dent in the surface of the wall that prevents the capillary action of moisture through the surface. (Please refer to Figure 8). (Ching,2013).
• Vapor barrier : A layer that uses water proof material to resist the formation of moisture from the interior wall (Please refer to Figure 9).(Newton,2014).
• Gutter: a structural element supported at only one end. (Please refer to Figure 10). (Newton, 2014).
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Parapet:
Figure 9
Figure 10
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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:
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The part that extends beyond the wall of a building. (Please refer to Figure 11). (Collinsdictionary.com, 2014).
• Flashing: “thin continuous pieces of sheet metal or other impervios material installed to prevent the passage of water into astrucutre from an angel or joint.” (Newton, 2014).
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Insulation:
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“the underside of an overhanging roof eave”. (Ching, 2013).
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Sealant:
a technique that use silicone to seal the openings in the building ”(Please refer to Figure 12). (Newton, 2014).
Sealant Figure 8
Figure 12
Down pipe Figure 11
Bibliography
Ching, F.(2013). Building Construction Illustrated. Wiley & Sons, Inc. Greening the machine,. (2014). vapor barriers. Retrieved from http://greeningthemachine.blogspot.com.au/2006/05/vapor-‐barriers.html 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 Queensland Guttering,. (2014). Downpipe installation. Retrieved from http://www.queenslandguttering.com.au/downpipe-‐styles.html