Week 10
One of the main structural building materials used in the pavilion is concrete. As this photo shows, the base for the building is off form concrete that has Rio bars running through it for added strength, with the slab measuring 230mm in thickness. Form ply is used for the molds, however for the exposed concrete walls as seen in the far left, the architects have specified that the grain of the timber is to be visible in the concrete, so instead oregan timber has been used as the forming. On top of this base, a structural steel frame has been fabricated off site and then erected to act as the main structural element of the pavilion. This allowed extremely fast progress to be made on the structure. The front section of the building is completely glazed, with sliding glass doors along the bottom, and windows along the top. The windows sit on mullions as well as glazing beams, which run along the top section of steel. The roofing structure sits on purlins. On top of the purlins is 25mm tongue and groove timber sheeting, timber battens, and then insulation for sound proofing due to the location of the building.
The internal tongue and groove timber roofing will be left exposed, and then the walls will be plasterboard. Four laminate wooden columns are used at the front of the building. These columns support the weight of the roof structure, however the reason they are timber is purely for aesthetic reasons. The timber columns are attached to the steel beams by 55mm steel pins. Steel top hats are used to set the Yellow Box tongue and groove timber cladding 35mm off the battens for both sound and heat insulation. The window panels at the top of the section at left utilize glazing adaptors at the head of the window for the connection between glass and steel, and they also provide waterproofing. This photo shows the under-‐ flashing, which is placed over the box guttering, and will then be covered by over-‐ flashing. Laminated veneer timber is used throughout the structure. This material is superior to regular timber as it is both stronger and cheaper, whilst also being bug and termite proof as a result of the glue used in it. The large chimney structure that houses a gas fireplace is constructed by cement sheeting on timber battens, with it being externally clad in tongue and groove timber. The scale of it is predominantly an architectural feature, however along the top of it is a louvered section of window that will allow the building to ventilate if needed.