ABPL20033 - Construction Analysis, Semester 2 - 2019 Dr Alberto Pugnale, Subject coordinator Dr Sofia Colabella, Senior Tutor Zamaneh Khoshdel, Tutor Marissa Samrai, 1003391, 27th October 2019 John Wardle Architects, Lake Wendoree Residence, Tutorial Number 12. ASSIGNMENT 3 FLIPBOOK SECTION 3D: Layers of information
Layer One - Structural systems, below ground
Vertical Horizontal
Infill - compacted engineers fills Pad Footing - PF1 (1000 SQ x 500 min deep blinding concrete pad footing centred beneath column) poured integral with blinding concrete beneath edge beams Blinding Concrete - 15 MPa blinding concrete
Waffle Slab - Concrete - slab design based on class P - H2 Void Formers Reinforcement and Bar Chairs - N12 reinforcement bars at 400 mac centres with 300 gog at each end Retaining Wall - 220mm thick concrete retaining wall Edge Beam
How did the site conditions affect the design of the house? The flat site encouraged the architects to use infill to create changing heights on the site with consequently influenced the height of the edge beam. Additionally, because of the original site conditions, infill was required to allow for enough height when digging the trenches. As a result of the need to add infill to the site to give more depth to the site when digging the trenches, the engineers could easily manipulate the ground conditions to establish the change in levels as seen in this section of the construction to align with the architectural intent to create changing floor levels in the design. According to the as built build, the conservatory is three steps higher than the kitchen, a architectural feature achieved primarily through the infill used to raise the ground level. The architectural intent to want the perimeter gutter in the conservatory flush with the floor level required the form work of the concrete slab to allow for this set down. Furthermore, the additionaly desire to have a vertal part of the wall (outside the kitchen) to be finished using stone, required the placement of a 220mm thick retaining wall.
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Layer Two - Structural systems, above ground Beam - 310 UC 40, 250 PFC, 310 UB 32, 300 PFC, 300 PFC Steel
Ridge - 180 UB 16, 180 UB 16 Cranked Beam, FSBW at ridge Column - 200x100x5 RHS, 260 PFC, fabricated 180 PFC Column, with 10mm closer plate Bracing - steel bracing
Timber
Joist - 200 x 45 mm batttens @450 centres Rafters - 70 x 35 battens at 450 centres Purlins Stud Frame Walls
Top Plate Bottom Plate Stud Lintel Nogging
How does the structure define the composition of architectural form and space? The architectural intent for the bedrooms to appear weightless above the transparent conservatory required beams and trusses that were able to cantilever and span such a distance. Not only do the bedrooms cantilever but they also have very unique structures that consequently required The architectural intent for the conservatory to be as transparent as possible required carefully placed structural columns which could not only carry and support the weight above, but also define the space within the building including the partitions, doorways and windows. The steel members were also designed such that they could allow for the large amount of glazing in the conservatory without the need for internal columns that would impact the architectural intent of the space.
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Layer Three - Internal (non-load bearing) partitions
Fixed
Non-load bearing walls
Stud Walls
Top Plate Bottom Plate Stud Lintel Nogging
Moveable
Built in Furniture
Robes Bench - 89x89x5 SHS, 100x100x6 SHS, 50x50x2 SHS
Doors
Pivot Doors Internal - Frameless Glass Pivot Door, solid pivot door External - Frameless Glass Pivot Door, Tas Oak Frame Double Glazed
How do the internal partitions organise the life inside the building? In the conservatory, the large bench directly influences the movement and circulation of the space, and in particular the transition between outside and inside. Additionally, the height of this bench changes from the kitchen into the conservatory, completely changing the pace and experience of the space. This bench is fixed structurally into the construction steel framework and therefore is intended to be used as an integral piece of furniture, rather than one that can be moved around or dismantled in the future. Adjacent to the conservatory is a large storage cupboard located next to the back door. This cupboards location is important for the role that electrical services within this cupboard play for the operation of the home, as discussed later. Upstairs, the internal partitions divide the bedroom, aligning also with the unique roof structures above. Each bedroom is treated as separate forms, indicated internally by the internal partitions, and shown externally by the roof structure, inspired by the Lake Wendouree Boat Houses. Additionally, in the upstairs living room outside the bedrooms, the ceiling level is made flush with the heigh of the doors such that when you enter the bedrooms the height and angles of the ceiling structure is emphasised by this juxtaposition.
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Layer Four - Environmental Protections Expressed
Down Pipe - 100mm diameter external pipe (colour: VM Zinc Autumn Red Pigmento) Sky Lights Glazing -
Hidden
Fineline XT Operable Glass Facade System (single glazed louvres), concealed glazing in Tas Oak frame
Insulation
Acoustic - 120mm 3.2 R Value Batts Sounds-screen Plus Thermal -
Waterproof membrane
210mm thick 4.1 R-Value ceiling batts 120mm thick 3 R Value
Slab - Polythene waterproofing membrane Zinc Cladding - TyvekÂŽ HomeWrap by DuPont Roof- self-adhered, water resistive vapour permeable air barrier sheet membrane
Gutter - 0.6mm thick box gutter
0.7 mm thick box gutter
Glazing Flashing - flashing under window sill Blinds - blinds in bedroom for thermal insulation and daylight control
How did the architect approach the design of environmental protections? Do the elevations express or hide environmental protections? The architects have used techniques to simplify the appearance of environmental protections especially in the waterproofing component. The use of a single skin encasing the bedrooms hides gutters and joins to create a seamless design intent. It was therefore necessary for the gutters to be embedded within the design of the roof structure. Furthermore, the down pipe connecting to this gutter is also hidden through the structure, as the architects designed a double stud wall on that facade to contain it. However, although they were able to conceal the down pipe outside the bedroom, they were unable to gain the same success outside the conservatory, because of the glazing surrounding this room. However, in order achieve the highest degree of concealment, the architect carefully aligned the downpipe with the right angle corner of the room, in order for the mullion to hide the pipe from the inside. The elevations hide (where possible) environmental protections including less desirable elements of insulation and waterproofing techniques. However skylights and vertical glazing are expressed vividly throughout.
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Layer Five - Mechanical and Electrical Systems Mechanical Electrical
Louvres Comfort and Function
Lights
Down Light Wall Light External Wall Light
Power Point - Clipsal B series Stainless Steel Ceiling Speaker - Stealth Ceiling Mounted Internal Speaker Point Thermostat - Hydronic Heating
Security and Safety -
Hard-wired Smoke Alarm Keyless Entry Pad Alarm Key Pad
Did the architect organise the internal spaces to place mechanical and electrical services efficiently? The organisation of the internal spaces to accommodate for the mechanical and electrical services was especially efficient, particularly with regard to the data cupboard that houses many of the major electrical components in a central yet discrete location. This cupboard, indicated under the category of Security and Safety above, contains an alarm key pad (for access in and out of the back door), an audio visual point, Austar Pay TV Box, a wireless access point, a visual louvre control and various other connected electrical and mechanical devices. As a result of the architect not wishing for these various services to be seen, the careful organisation in a single spot, no only creates a non-distracting interior but also makes it easer for access and maintenance as and when required. The mechanical louvres require services to run from the data cupboard to the louvres in the form of electrical wires, therefore the engineers where required to accommodate for this within the mullions that frame each set of louvres. Knowing that these mullions were required, the architects ensured that they do not take away from the seamless design intent they initially set out to achieve. Because of the large ceiling spaces in the bedrooms upstairs, it would have been a challenge to efficiently place lights and other wired services, however, there is an indication for sourcing an alternative for a space completely lit by down lights. Through fitting wall lights as well as ceiling lights, the amount of resource required to wire each light fitting is reduced.
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Layer Six - Physical Enclosures Structural (Hidden)
Plywood - 19mm Marine Grade Ply Wood Mortar and Cement Sheet
Finishes (Visible)
Zinc Cladding - Double Lock Standing Seam VM Zinc Cladding Painted Plasterboard Stone Flooring -
Ceiling Walls
Conservatory External Wall Finish
Do the physical enclosures express aspects of the building (internal spaces, structure and materiality? The physical enclosure of this part of the home is made up solely of the zinc standing seam cladding that wraps around the roof, facade and soffit. This material is used primarily on the upper story, and because of the architectural intent to establish three unique forms that contain each bedroom, this cladding also reflects these internal spaces. The cladding follows the same form that each of the rooms have, and, because of the intent for a free, non obstructed facade the only interference with this cladding is the glazing. One may also suggest that through using a single material to wrap around the cantilevered upper story, the eye is drawn most to the forms the zinc defines rather than the material itself, possibly an architectural intent supported by the choices of materiality and structural components. Additionally, the stone flooring in the conservatory runs through the space and also outside into the courtyard, further reinforcing the seamless design intent by the architect. This choice of flooring also helps to define the programmatic function of the space, and also pre-empts the change from indoor to outdoor. The paint finish on the plasterboard is kept neutral through the home, possibly with the intent to emphasis the architectural forms in the space including the ceiling space in the bedrooms.
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