AND BUILDING TECTONICS
Accoding to the conceptual sketches, the building is a concrete building with pocket windows forming a pattern on northern facade, with balconies concealed behind. The north-eastern facade is filled with curtain wall glazing. The building also has a metal roof with flat roof terrace concealed behind the roof form.
The building tectonics respect the design intents by using the relevant materials.
The northern facade is built with precast concrete panels. The upper levels of the facade have openings with balconies behind. Meanwhile, the ground floor level has double glazed windows. These openings and windows together form a unique pattern on the concrete facade.
The north-eastern facade is built with curtain wall glazing on upper levels. Taking in consideration of climate condition, the curtain wall facade is further fitted with operable aluminium louvres to manipulate sun levels into the interior.
The building has a metal roof with flat roof terrace concealed behind the roof form. The roof itself also acts as parapet along the terrace for fall prevention.
The entrance at the ground floor level has a unique form unlike the upper levels. It is signified with curve wall which takes reference from the curve shape along western facade (refer to A101 and A102).
Green buffer strip with deciduous plants is designed between building and road to act as windbreak, provide shading and some sound insulation. It also provides aesthetic and environmental values. Some parts of the ground are installed with permeable pavers to provide walking path to the visitors.
LEGEND
ADJACENT BUILDING
EXPLANATORY SCHEDULE
STRUCTURAL GRID
The building is a irregular-shape building with curves and wide angles. The structural grid is imposed according to the shape of the building. The distance of gridline is spaced at most 7500mm, which is the maximum span of post tension slab.
PLACEMENT OF STRUCTURAL ELEMENTS IN PLAN
The building core is placed along the southern wall. It is formed out of lift and fire stairs core, and acts as a combination of shear wall and sway frame. This offers lateral stability to the building. The structural columns are distributed at intersection points of grid lines. They give stability in two orthogonal directions from the building core. The main stairs are placed between gridlines to avoid cutting through slab hence avoiding the need of additional structural support.
A C D
BIRRARUNG MARR
SCALE 1:100
DRAWN BY JM CHEONG
DATE 05.09.2022
REVISION 10.10.2022
PROJECT
A1.01
1960 ROOFLINE
EXPLANATORY SCHEDULE
PRECAST CONCRETE PANEL FACADE - 150mm thick
- 40 MPa reinforced concrete - reinforced with SL92 in centre line of panel The precast concrete panels are load bearing hence they transfer vertical load from other building elements and cannot be removed without affecting the strength and stability of the building. They also provide lateral stabilty as they are able to resist wind and seismic forces.
Concrete precast panels also provide high weather and thermal resistance at the same time offering aesthetic value.
The facade is penetrated with openings (for balconies) and double glazed windows (with overhangs to provide shading at northern facade) that form unique pattern on the facade.
CURTAIN WALL w. ALUMINIUM LOUVRES FACADE - glazing panel size; 3830H x 1800W - SHGC 0.25, Uw 2.0
- powdered coated aluminium for operable vertical louvres
The curtain wall facade is non-load bearing facade and is used to admit northern sunlight into the interior. Operable louvres are used to enable manipulation of sun level into the interior.
JIA MIN CHEONG
SCALE 1:100
DRAWN BY JM CHEONG
DATE 05.09.2022
REVISION 10.10.2022
PROJECT THE PADDOCK BATMAN AVENUE VICTORIA DRAWING
1. STRUCTURAL GRID
The structural grid is imposed according to the shape of the building. The distance of gridline is spaced at most 7500mm, which is the maximum span of post tension slab.
2. BUILDING CORE The building core is placed along the southern wall. It is formed out of lift and fire stairs core, and acts as a combination of shear wall and sway frame. This offers lateral stability to the building.
3. STRUCTURAL COLUMNS
The columns are distributed at intersection points of grid lines. They give stability in two orthogonal directions from the building core.
4. MAIN STAIRS
The main stairs are placed between gridlines to avoid cutting through slab hence avoiding the need of additional structural support.
5. STRUCTURAL LAYOUT ON DIFFERENT FLOORS
The structural grid and placement of structural elements in plan are repeated across floors. This ensures the stability gets all the way down to the ground foundation while leading to a more economical structure.
EXPLANATORY SCHEDULE
STEEL FRAMING - Grade 250, thickness range 5-150mm - univeral beams, c channels, rectangular hollow sections, bolted or welded based on structural requirement according to engineering details Steel stud walls are designed for inner layer of building enclosure and interior walls. Steel has a higher strength-to-weight ratio when compared to concrete and timber. Hence steel enables longer spans at smaller dimensions, which results in more open floor plans. Steel also provides greater resistance to wind and seismic loads. Additionally, steel provides high fire, moisture and weather resistance.
POST-TENSION SLAB
- 40 MPa reinforced concrete, 220mm thick - Span up to 7500 mm
The use of high strength steel tendons enable formation of a much thinner slab with a longer span. Hence post-tension slab spreads the load over a wider area, which results in smaller footings being required.
CONCRETE SUSPENDED GROUND SLAB - 32 MPa reinforced concrete, 150mm thick - reinforcement required at top to deal with shrinkage cracking and bending of slab over beams - reinforcement required at bottom to deal with bending between ribs Site is classified as P, with reactive soils, hence is difficult to build on. Suspended slab is chosen as it requires less groundwork than concrete slab on ground.
CONCRETE SLAB ROOF - 40 MPa reinforced concrete, 250mm thick - top and bottom reinforcement Concrete slab roof can withstand higher amount of foot traffic. It also provides high weather and thermal resistance.
PILE FOOTING - 450mm diameter pile - reinforcement: 6 M20 bars with R6 spiral ligature Site is classified as P, hence deep footing is required to reach hard strata for stability.
JIA MIN CHEONG
SCALE 1:100
DRAWN BY JM CHEONG
DATE 05.09.2022
REVISION 10.10.2022
THK COMPRESSED FIBRE CEMENT EXTERIOR LINING
BALCONY
INTERIOR
EXPLANATORY SCHEDULE
INVERTED FLAT ROOF SYSTEM
This is a form of flat roof which the waterproofing layer is beneath the thermal insulation. Waterproofing membrane is protected by the insulation from damage caused by weather flunctuations and roof traffic.
Roof can hence withstand longer period and require lower maintenance than conventional roof system Roof is sloped to fall at 1:80 to enable adequate drainage.
THERMAL INSULATION
Rigid extruded polystyrene insulation (Kingspan GreenGuard GG300 insulation board) is fitted to roof to reduce heat loss through roof.
Earthwool insulation batts (R>5.0) are fitted above suspended ceiling panels to reduce heat flows out through ceiling and across floor levels. Earthwool insulation batts (R>2.5) are fitted in steel stud walls to reduce heat flows out through wall by 80%.
ACOUSTIC INSULATION
Earthwool insulation batts are fitted into external walls, internal walls and ceilings. The insulation batts help to control the transfer of external noise to interior and the transfer of internal noise between rooms. The insulation is estimated to reduce the noise transfer by 70%.
MOISTURE PROTECTION
Sloped surfaces, weathering and capping are designed for adequate water drainage.
Upstands are created along roof edge, thresholds and junctions to act as barrier against water penetration.
Drips are created to pull the adhering water free of projecting surfaces and walls.
Waterproofing materials and flashings are used to act as barrier against water penetration. Subsills, drain and gutter are used to allow adequate water drainage.
VISUAL AND GLARE CONTROL
Double glazing is used at all windows and curtain walls. The glazing used has values of SHGC 0.25 and Uw 2.0. Double glazing provides benefit such as increased insulation, reduced condensation and reduced noise transfer.
Overhangs are designed at north facing window to provide horizontal shading (northern sun shading at 52 degrees in Melbourne according to ‘Energy Smart Housing Manual 2018’ ). Operable aluminium louvres are installed at curtain wall facade to provide shading and enable manipulation of sun level into the interior (refer to A102).
CHEONG
REVISION 10.10.2022
DRAWING
PURPOSE FOLDED COLORBOND PARAPET CAPPING, OVERLAPPING FIBRE CEMENT LINING AND METAL ROOF SHEET
12mm THK COMPRESSED FIBRE CEMENT EXTERIOR LINING
EXPLANATORY SCHEDULE
CONCRETE TO STEEL FRAME CONNECTION
Installed according to engineering details
INVERTED FLAT ROOF SYSTEM
This is a form of flat roof which the waterproofing layer is beneath the thermal insulation. Waterproofing membrane is protected by the insulation from damage caused by weather flunctuations and roof traffic.
LYSAGHT LONGLINE 305® COLORBOND ROOFING SHEET INSTALLED TO MANUFACTURER'S DETAILS
GALVANISED STEEL FRAMING ACCORDING TO ENGINEERING DETAILS
GALVANISED STEEL FIXING BRACKET
Kingspan GreenGuard GG300 INSULATION BOARD, UPSTAND ACCORDING TO MANUFACTERER'S DETAILS
GALVANISED
ACO BuildLine GALVANISED STEEL GRATED ROOF DRAIN
DRAINAGE PIPE CAST INTO SLAB
FINISH GRATED TRENCH WITH BACKING ROD AND SILICONE SEALANT 400 X 400 X 30mm CONCRETE PAVING SLAB ON SUPPORTS
ADJUSTABLE PEDESTAL SUPPORT
120mm THK Kingspan GreenGuard GG300 INSULATION BOARD
2 LAYER MASTIC ASPHALT WATERPROOFING 50mm CONCRETE SCREED TO 1:80 FALL
FALL 1:80
Roof can hence withstand longer period and require lower maintenance than conventional roof system
Roof is sloped to fall 1:80 at the edge to enable adequate drainage.
MOISTURE PROTECTION
Sloped surfaces, weathering and capping are designed for adequate water drainage.
Upstands are created along roof edge, thresholds and junctions to act as barrier against water penetration.
Drips are created to pull the adhering water free of projecting surfaces.
Waterproofing materials and flashings are used to act as barrier against water penetration. Subsills, drain and gutter are used to allow adequate water drainage.
MOISTURE PROTECTION - DRAINAGE
ACO Buildline Grated Drain
This is shallow drainage channel with grates that are suitable for outdoor usage. The grate is slip resistant and provides zero threshold for disability access.
The balcony drain is connected to subsill of galvanised steel door sill to allow for condensate drainage.
12mm THK COMPRESSED FIBRE CEMENT SOFFIT
GALVANISED STEEL FIXING BRACKET COLORBOND BOX GUTTER
PRECAST CONCRETE SILL, WITH DRIP GROOVE,
02 01
ROOF-FACADE JUNCTION
INTERIOR BALCONY
DOUBLE GLAZED GLASS FOLDING DOOR
SCALE 1:10
X 400 X 30mm CEMENT TILES HIGH STRENGTH, NON SHRINK GROUT, SREED TO FALL 1:80
WATERPROOFING MEMBRANE
BALCONY FLOOR THRESHOLD JUNCTION
@ A1
DRAINAGE
PROVIDE 80mm SLAB REBATE AT THRESHOLD TO FORM UPSTAND AGAINST WATER PENETRATION
GALVANISED STEEL ANGLE FIXED TO CONCRETE SLAB
DATE 05.09.2022
REVISION 10.10.2022
PROJECT THE PADDOCK BATMAN AVENUE VICTORIA
DETAILS DRAWING