Week five logbook

Page 1

Learning loop: walls may be enclosure system or structural system of a building ( in some cases both). During the site visit, I noticed the light concrete they use for as a exterior wall is only functioning as the enclosure system while the exterior brick veneer wall at the ground floor has both functions. The sketch on the right shows the structural system of a brick veneer wall. The outside brick veneer is used for athletic view, that the actual load bearing part of this system is the timber stud wall. The gap in-­‐between the brick veneer and the timber stud wall is usually used for insulation and water proofing materials. However sometimes it just left empty as air has good thermal mass. Inside stud walls are structural system only. It used widely in timer constructing. The sketch shows different parts of the stud wall: noggins are used for rigidity so that the studs can span; cross bracing are usually made of steel and used for stabilise the studs; plywood sheet bracing functions the same as cross bracing, however, it is not always necessary to have sheet bracing. For example in our visiting site, I noticed that at the top floor stud wall there is no sheet bracing because the load it bears is lighter than ground floor, where stud wall has double sheet and cross bracing. The usage of steel in bracing is because steel is less likely to bend than timber. Except for brick veneer, light concrete is also used for cladding stud wall that both Melbourne school of designing and my visiting site used this material. Sometimes for timber stud wall, it requires steel columns and beams to support the whole structural system as timer is soft and easy to brick. The opening on stud wall increase the span of the stud, therefore it requires heading and double stud around to bear the load at this area. Sketches shows when the force is applied, the use of cross bracing on pin joint frame.


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