ABPL20033 - CONSTRUCTION ANALYSIS SEMESTER 2 2019 DR ALBERTO PUGNALE | SUBJECT COODINATOR DR SOFIA COLABELLA | SENIOR TUTOR ROBERT DE MELIS | TUTOR JE TAN | 915959 | 15 SEPTEMBER 2019 NORTHCOTE HOUSE | TUTORIAL 24 ASSIGNMENT 03 FLIBOOK SECTION 3D: LAYERS OF INFORMATION
S T RU C T UR A L SY S T E M S BELOW GRO UND
01 Project 12’s Northcote House uses a raft slab for its structural system below the ground. A raft slab was used for this project as it accommodated the existing ground conditions effectively. As this construction was an extension of an older existing building, it required extensive re-slabbing. The site consisted of a sandy foundation, which is prone to uneven movement. In using a raft slab for the foundations, edge beams and ribs are dug into the ground, and thus have greater perimeter stiffness in comparison to a waffle slab, which is built on top of the ground. This gives the slab better tolerance to movement in the ground. The raft slab also allows water to drain more easily than a waffle slab, under which water can flow and erode the foundations. This was especially important considering the extensive landscaping work surrounding the new extension portion of the house. The shallow foundations of the slab were suitable for residential construction, as the structural loadings of a domestic building were relatively low due to a smaller floor area in comparison to a commercial building. Sandy soil also means that shallow foundations were better suited to accommodating movement, whereas pad or strip footing would require more extensive excavation.
STRUCTURAL SYSTEMS BELOW GROUND
PREPERATION
STRUCTURE
TRENCH POLYTHENE
0.2MM THICKNESS
PACKING SAND
50MM THICKNESS
BAR CHAIRS
AT 800 CTS
SERVICE PIPE
25MM LAGGING
INSULATION
K3 KOOLTHERM
CONCRETE
EDGE BEAMS RIBS SLAB
REINFORCING FABRIC
STEEL
TRENCH MESH
RF82 4-TM-12
RF82 REINFORCING FABRIC SUPPORTED ON BAR CHAIRS WITH 50MM COVER
3-TM-12
RF82 REBATE SLAB ON GROUND
3-TM-12
SIDE INSULATION 0.2MM POLYTHENE
4-TM-12
50MM PACKING SAND
TRENCH
ABPL20033 | CONSTRUCTION ANALYSIS JE TAN | 915959 ROBERT DE MELIS | T24
PROJECT
DATE
FLIPBOOK SECTION 3D
27 OCT 2019
CASE STUDY
SCALE
NORTHCOTE HOUSE
1:50 AT A3
01
SECTION 2C STRUCTURAL SYSTEMS BELOW GROUND
S T RU C T UR A L SY S T E M S A B OV E GRO UND
02 The structural components of the building assist in defining the architectural form and spaces of the building through a considered application of various members. The large ground floor living space was designed to feel expansive and allow an opening out onto the back yard. This meant that structural systems needed to accommodate large spans to support the ceiling and first floor construction. In this case, equal angle sections were used to support a universal beam, which spanned across the rear sliding door. This created a large opening and allowed the sliding door to disappear into the wall cavities, increasing the openness of the living area and its transition into the garden. The architectural form of the building appears as a box which rests on top of another. To create the appearance of a continuous plane between boxes, universal beams and large LVL members were used to provide structural support to the first floor. A bulkhead over the kitchen also houses a universal beam, giving strength to the offset edge of the first floor. The double stud wall which rests on this member also provides structural support to the first floor.
STRUCTURAL SYSTEMS ABOVE GROUND
TIMBER
STEEL
STUD WALLS
45X90MGP10
C2
2/125X125X12 L
FJ1
300X45LVL
C3
89X89X6 SHS
B4
2/360X45LVL
B1
380 PFC PLUS 100X100X6 SHS
RL1
2/240X45LVL
B2
310UB32
R1 ROOF BATTENS
200X45LVL
B3
310UB32
PARTICLEBOARD
YELLOW TONGUE
CROSS STRAP BRACING
30X0.8 GALVANISED STEEL
JOIST HANGERS
GALVANISED STEEL
CROSS STRAP BRACING INCREASES RESISTANCE TO LATERAL LOADS BY PREVENTING SIDEWAYS DEFLECTION. LOADS APPLIED TO THE STRUCUTRE WILL BE TRANSFERRED ALONG THE HORIZONTAL MEMBERS AND DOWN INTO THE VERTICAL SUPPORTS. B2 310UB32 SPANS COLUMNS TO ABSORB LOAD FROM FIRST FLOOR.
PARTICLEBOARD FLOORING PROVIDES STRUCTURE FOR THE INTERMEDIATE FLOOR LEVEL AND ACCOMODATES LOADS FROM THE FIRST FLOOR WALLS.
ABPL20033 | CONSTRUCTION ANALYSIS JE TAN | 915959 ROBERT DE MELIS | T24
PROJECT
DATE
FLIPBOOK SECTION 3D
27 OCT 2019
CASE STUDY
SCALE
NORTHCOTE HOUSE
1:50 AT A3
02
SECTION 2C STRUCTURAL SYSTEMS ABOVE GROUND
IN T ERN A L ( N ON LOA D BE A RIN G ) PA RT I T I ONS
03 Internal partitions within Northcote House allow for an organisation of programme within the building. The location of these partitions informs the use and privacy of the rooms which they separate. On the ground floor, internal partitions are kept minimal. This was to allow a seamless integration of kitchen, dining and living room, creating a space which felt connected. The open nature of this space thus facilitates greater social interaction between activities, remedying the poor circulation and movement paths of the old existing building. The western mudroom entry is partitioned partially by the existing building. It leads from a corridor into the open living area, flanked by service programme, creating a practical and informal entry for the family’s day to day living. The front entry is formalised by another corridor, with a direct view through the older front section of the house, into the new rear extension. Integrated joinery elements create a sense of approach, as one steps into the living space, which opens up from the more constricted entry corridor by means of an expressive threshold. First floor partitions are standard stud walls, which section off the house for more private functions, such as bedrooms, a study and bathroom. This lightweight material is suitable for the platform frame construction of the building, which is designed to accommodate the loads from stud walls.
INTERNAL PARTITIONS
FIXED
STUD WALL
MOVEABLE
JACK STUD JAMB STUD LINTEL DOOR FRAME
CRITICAL CONRER (T-JUNCTION) REQUIRES ADDITIONAL STUDS AND BLOCKING FOR STRUCTURE AND STABILITY.
INTERNAL STUD WALLS PARTITION BEDROOM, BATHROOM AND TOILET.
JACK STUD.
OPENING IN STUD WALL IS SUPPORTED BY A LINTEL.
GROUND FLOOR IS LEFT UNPARTITIONED TO JOIN KITCHEN, DINING AND LIVING SPACES TOGETHER.
ABPL20033 | CONSTRUCTION ANALYSIS JE TAN | 915959 ROBERT DE MELIS | T24
DOOR LEAF
PROJECT
DATE
FLIPBOOK SECTION 3D
27 OCT 2019
CASE STUDY
SCALE
NORTHCOTE HOUSE
1:50 AT A3
03
SECTION 2C INTERNAL PARITIONS
EN V IRON MEN TA L P RO T E C T I ON S
04 The architects of Northcote House have designed the building’s environmental protections as discrete elements. This helps to accentuate the simplistic box form of the building, as unnecessary complications are hidden from view. A parapet runs around both the ground and first floor. This conceals the roof sheeting, gutters and flashing and helps to square off the edges of the building. A parapet capping on both roofs accentuates the continuous line which separates the planes of the different floors. Insulation is kept within the walls of the house, concealed by both the internal and external cladding. The double stud wall which rests upon the ground floor bulkhead is insulated with two layers, which helps to resist solar heat gain from the west. Windows were installed on the north facing wall to permint maximum sunlight to enter the house, smaller souther windows allow for views out onto the garden. The east and west walls do not have any windows to ensure privacy and prevent overlooking issues for neighbours.
ENVIRONMENTAL PROTECTIONS
THERMAL
INSULATION
INTERNAL PARTITIONS
EXTERNAL ENCLOSURES
WATERPROOFING
BRADFORD BATTS
ROOF SHEETING
KLIP-LOK 700
GUTTERS
DOWNPIPE
FLASHING
RAINWATER HEAD
HARDIE FIRE INSULATION ANTICON BLANKET PARAPET CAPPING K8 KOOLTHERM RIGID INSULATION
PARAPET CAPPING HIDES FLASHING AND GUTTER.
GLAZING
IN-04 BRADFORD GOLD HIGH PERFORMANCE BATTS IN ROOF CAVITY.
IN-02 BRADFORD SOUNDSCREEN BATTS IN INTERNAL WALLS.
IN-05 BRADFORD GOLD BATTS IN CEILING.
GLASS
DOUBLE GLAZING
SARKING
HARDIEWRAP WEATHER BARRIER
WINDOWS
WEATHER STRIPPING
ARGON CAVITY
CAULKING
LYSAGHT KLIP-LOK 700 IS GRADED WITH A 2 DEGREE FALL TOWARDS THE GUTTER.
ANTICON BLANKET IS COVERED WITH A LAYER OF REFLECTIVE FOIL SARKING.
HARDIEWRAP WEATHER BARRIER IS ATTACHED TO THE EXTERIOR WALLS AND TAPED DOWN.
FLASHING DIRECTS WATER ONTO ROOF SHEETING.
60MM HARDIE FIRE INSULATION INSIDE WESTERN BOUNARY WALL TO BUILT UP TO ACHIEVE 60/60/60MIN FIRE RATING.
ABPL20033 | CONSTRUCTION ANALYSIS JE TAN | 915959 ROBERT DE MELIS | T24
PROJECT
DATE
FLIPBOOK SECTION 3D
27 OCT 2019
CASE STUDY
SCALE
NORTHCOTE HOUSE
1:50 AT A3
04
SECTION 2C ENVIRONMENTAL PROTECTIONS
MECHANICAL AND ELECTRICAL SYSTEMS
05 The internal spaces of the building are efficiently organised to place mechanical and electrical services. To provide water to various locations in the house, a pipe was run underneath the concrete slab, connecting first to the kitchen, then running up the brick wall to the bathroom and toilet. By positioning the first floor services directly above the kitchen, this pipe could be run efficiently through the house, with minimal turns and length. Electricity is provided to all essential areas by means of cabling, which can be easily threaded through stud walls. These cables power lights, fans, outlets and other appliances. Switches are placed in convenient locations such as corridors to enable easy operation of lights in various locations. Solar panels on the roof collect electricity and heat water for a more efficient and sustainable method of energy generation. HVAC systems consist of air conditioning, fans, and hydronic heating. Air conditioning is built into diffuser slots in the joinery, creating a more discreet method of distributing air, as compared to a standalone AC unit. In-slab hydronic heating in the living area is also a discrete method of warming the space. Both of these systems reduce the number of components in the living area, making the space feel more seamless.
ESSENTIAL SERVICES
WATER
ELECTRICITY
MAINS WATER SOLAR HOT WATER
DOWNLIGHT WALL OUTLET
RAINWATER HVAC
AIR CONDITIONING
SEWERAGE HYDRONIC PANEL CEILING FAN HYDRONIC SLAB HEATING
AIR CONDITIONER RETURN IS LOCATED IN JOINERY BUILT INTO THE WALL.
ALL SERVICES RUN TO SERVICE YARD ON EAST SIDE OF THE BUILDING. (AC, HYDRONIC SYSTEM, RAINWATER TANK, WATER HEATER).
SOLAR WATER HEATER DIAGRAM.
SOLAR PANEL ON ROOF TILTED TO FACE NORTH FOR MAXIMUM SUN EXPOSURE.
CABLING TO EXTRACTOR FAN. CABLING TO DOWNLIGHT.
WATER SUPPLY TO SINK. WATER SUPPLY TO SHOWER.
CABLING TO CEILING FAN.
WATER SUPPLY TO BATH.
WATER SUPPLY TO TOILET.
SERVICE PIPE RUNS INBETWEEN BRICK SKINS.
WATER SUPPLY TO KITCHEN SINK.
IN-SLAB HYDRONIC HEATING COILS.
ABPL20033 | CONSTRUCTION ANALYSIS JE TAN | 915959 ROBERT DE MELIS | T24
PROJECT
DATE
FLIPBOOK SECTION 3D
27 OCT 2019
CASE STUDY
SCALE
NORTHCOTE HOUSE
1:50 AT A3
05
SECTION 2C MECHANICAL AND ELECTRICAL SYSTEMS
PHYSICAL ENCLOSURE SYSTEMS
06 The physical enclosures of the building are designed to accentuate various contrasts between the ground and first floor. The considerations made by the architects help to express a simple, yet composed architectural form. External materiality of the building reflects a contrast between the boxes of the ground and first floor. The ground floor is clad with whitewashed recycled brick, creating a monolithic and grounded appearance. This is contrasted by vertically oriented charred timber on the first floor. This material appears lighter in mass than the brick, and thus seems to delicately rest on top of the more solid ground floor. The contrast in material is accentuated by contrasts in colour and texture, which help to separate the floors and function of the building. A dark first floor suggests an element of privacy, which can be completely closed by operable louvres. Additional privacy accommodations have been made on the south faรงade of the extension. An perforated aluminium screen conceals the bathroom window, while louvres prevent issues of overlooking the neighbouring property. The white brick of the ground floor helps to express the openness of the living area, which is contrast with a polished concrete screed. This screed covers the entirety of the space, blurring threshold and extending into the concrete slab in the garden.
ENCLOSURE SYSTEMS
INTERNAL
EXTERNAL
PLASTERBOARD
10MM THICKNESS
HARDIE SMART BOUNDARY SYSTEM
SYCON AXON CLADDING
TIMBER FLOORING
AMERICAN OAK
CHARRED TIMBER
VERTICAL SHIPLAP CLADDING
REVERSE BRICK VENEER
WHISPER WHITE DULUX FINISH
BRICK
DOUBLE BRICK VENEER
TILES
STONE CLAY PORCELAIN
WINDOWS
LOUVRES
CONCRETE SCREED
100MM THICKNESS
PRIVACY SCREEN SKYLIGHT SLIDING DOOR
INTERNAL WALLS FINISHED WITH WHISPER WHITE DULUX PAINT.
CHARRED TIMBER SHIPLAP CLADDING WARPS AROUND FIRST FLOOR.
AMERICAN OAK TIMBER BOARDS ON FIRST FLOOR. DOUBLE SKIN BRICK WALL.
REVERSE BRICK VENEER ON WESTERN BOUNDARY WALL CONTINUES MATERIALITY FROM SOUTH FACADE. POLISHED CONCRETE SCREED.
ABPL20033 | CONSTRUCTION ANALYSIS JE TAN | 915959 ROBERT DE MELIS | T24
PROJECT
DATE
FLIPBOOK SECTION 3D
27 OCT 2019
CASE STUDY
SCALE
NORTHCOTE HOUSE
1:50 AT A3
SYCON AXON EXTERNAL CLADDING ON GROUND FLOOR AS PART OF HARDIEFIRE BOUNDARY WALL SYSTEM.
06
SECTION 2C PHYSICAL ENCLOSURE SYSTEMS