Week 9 Detailing Detailing for Heat and Moisture Where water may enter
Roofs (especially box gutters/internal roofs) Walls Basements
For water to enter a building three conditions must occur:
1. An opening 2. Water present at the opening 3. A force to move the water through the opening *Secret for controlling water leakage – Remove any of the conditions and water will not enter. Some detailing strategies are: -
Sealants Backer Rods Pressure Equalisation Chamber Capillary Breaks
Gaskets Slope Drips Labyrinth
Overlaps & Flashing Rainscreen
Detailing For Air Leakage Saking – moisture and air leakage barrier (Sisalation).
Detailing For Heat Methods in controlling conduction 1. 2. 3. 4.
Thermal Insulation *thermal bridge – passage of heat stopped (plastic sliding door frames instead of metal). Double/triple glazing Thermal mass and thermal chimneys Cooling draughts (CSU Thurgoona).
Plastics, Rubber and Paint
Types of Rubber
Can be used as cladding (good acoustic qualities) We now use synthetic rubbers Neoprene (most common synthetic rubber)
Elastic Soft (Friction) Chemical Resistant Non-porous Good Insulator Not Brittle/Stiff
SBR (Plastic) Neoprene EPDM
Types of Plastics
Polycarbonate Cellular Sheeting has air cells inside. Able to be moulded into different shapes Long polymers – allows for moulding.
PVC (Polyvinylchloride) Neoprene Polycarbonate Silicone Acrylics
EFTE Melamine Polystyrene Polypropylene
*PVC is bad for the environment (manufacturing side) Acrylic Setting: lightweight (skylight) and caulking
Silicone: weatherproofing (gaps)
Polyethylene PVC *can be recycled
Melamine Formaldehyde Polystyrene
EFTE: light structures, insulation by air cushioning
Types of Paints
Paints Pigment and diluent are 2 materials in paint. -
Colour consistency Durability Flexibility Gloss
Dry slow. High gloss. Brushes cleaned with Turpentine.
Most paints today. Improvements in composition. Dry quick.
Tutorial Drawing In tutorial 9 we were asked to complete a 3D drawing of our section of which we created a 1:1 drawing of (back to the original scale). This was a difficult task as a specific method of drawing was to be used (not just extraction like in the sketch below). This took up most of our time within the tutorial. The other time was spent on group presentations of the 1:1 drawings we had made throughout the week.
Reference List Selleys. 2011. Flexible Gap Fillers. [ONLINE] Available at: http://www.selleys.com.au/fillers/flexible-gap-filler/multi-purpose/. [Accessed 07 October 13].
Published on Oct 7, 2013