Constructing Environments Karen Dionisio-See Week 8 Activity: In Detail This week we were given a section detail from the case study building allocated to us that is the Oval Pavilion. From a 1:10 scale, we had to draw the detail in a 1:1 scale. The drawing that I have to enlarge is a section detail of a service area of the Oval Pavilion. It is located at the ground floor and the basement of the building. It is a masonry wall section or a slab-to-wall section consisting of brick veneer as well as concrete foundation columns and ground slabs (Ching 2008: 5.24). Moreover, it is a cavity-bearing wall with flashings, drip edges, weep holes and sealants for waterproofing around the structure.
Plasterboard
Insulation
Wall ties
Vertical structural members on the ground floor
Frosted plastic sheet Concrete slab
Backer rod and sealant
Flashing
Cement (concrete)
Abestos cement
Weep holes
Vertical structural members on the basement Oval Pavilion Section - Service Area 1: 10 scale
Drip edges
Constructing Environments Karen Dionisio-See Week 8
INSULATION The interior of the wall includes of an insulation system to control the movement of heat in and out of the building (Ching 2008: 7.39). This means that the heat loss during winter and the heat accumulated during summer would be prevented. The provision of an insulation system is essential especially in cold climates because it limits the use of heating systems that increase the carbon footprint and embodied energy of the building (Wood Solutions 2013). Furthermore, this reduces the overall energy costs in the building.
The insulation system is put in between horizontal timber framing plates for accommodation and covered in two layers of plasterboard as a fire-resistant finishing element (Ching 2008: 7.44).
Problem: It is vulnerable in terms of leaking around openings due to poor detailing and errors in installation processes (Ching 2008: 7.38). The water that could enter the cladding would then cause the layer to collapse.
Solution: A layer of drainage mat is reinforced such as a glass-fiber mesh on the base coat to prevent cracks and leaks from occurring that would bring water content towards flashings (Ching 2008: 7.38).
Constructing Environments Karen Dionisio-See Week 8
BRICK VENEER The brick veneer serves as a barrier or protection from weather conditions that are anchored to a structural frame by expansion joints (Ching 2008: 7.28).
Problem: It could expand and contract because of the changes in temperature and moisture content (Ching 2008: 5.22).
Backer rod and sealant
Solution: Expansion joints are used as a solution to allow brick expansion and to resist deflection form structural frames from stress on masonry walls (Ching 2008: 7.29). They are further enclosed with a sealant or backer rod to prevent air and moisture from entering. These joints also provide stability form lateral forces across joints (Ching 2008: 5.22). Moreover, wall ties are attached to secure cavity walls and the masonry veneer together. (Helifix Australia 2013). They provide support form lateral forces such as wind and earthquakes. Nowadays, a regulations has been legislated to prevent the use of corrosive materials for wall ties that had failed its primary purpose.