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Legislative and Building Code of Australia 2011 Changes
Information Seminars – April 2011
WELCOME
Program
9.00 am – 10.30 am - Session one
� The National Construction Code Series
� Proposed Building Act and Regulations update and Premises
Standards
� Main BCA 2011 Changes inc. Access
Morning Tea – 30 mins
11.00 am – 12.30 pm - Session two
� Main BCA 2011 Changes continued
� BCA Energy Efficiency / 6 Star
Lunch – 1hr
The National Construction Code Series
NATIONAL CONSTRUCTION CODE SERIES
Volume 1 BCA 2011 – Class 2-9 buildings – Blue
Volume 1 BCA Appendices - White
Volume 1 BCA Guide – Yellow
Volume 2 BCA 2011 – Class 1 & 10 buildings – Red
Volume 3 PCA - Green
Building Act Update
Building Act Amendments
� To recognise the National Construction Code
Series
� To align with and complement the Premises
Standards
Section 3 New Definitions
"National Construction Code Series means the National Construction Code Series published by the Australian Building Codes Board as amended or remade from time to time;".
"Building Code of Australia means the Building Code of Australia comprising—
(a) Volume One of the National Construction Code Series including any variations or additions in the Appendix Victoria set out in the Appendices to that Volume; and
(b) Volume Two of the National Construction Code Series including any Victoria additions set out in Appendix A of that Volume;".
Section 221B(1) has been amended to include Volume 3 of the
NCC Series
"Plumbing Code of Australia means the Plumbing Code of
Australia set out in Volume Three of the National Construction
Code Series including any variations or additions in the Appendix
Victoria set out in Appendix A of that Volume;".
PREMISES STANDARD HISTORY
� History of the Access Provisions
� Development of the Disability (Access to Premises – Buildings)
Standards 2010
� Alignment of the BCA with the Access Code
Building Act Amendments
New Section 160(4)
(4) ‘An application must not be made under this section in relation to
an access provision of the building regulations within the
meaning of section 160B.’
All applications to the BAB relating to an ‘access provision’ will
now be made under Section 160B
Building Act Amendments
� Premises standards administrative requirements (unjustifiable
hardship)
� New Section 160B – application to the Building Appeals Board
– Determination on modifications and or exceptions to BCA
requirements
– Based on unjustifiable hardship
Building Regulation Update
BUILDING REGULATIONS AMENDMENTS
� Building Amendment Regulations 2011
� Building Amendment (Private Bushfire Shelter Construction)
Regulations 2011
� Both come into effect on 1 May 2011
� Generally to reference BCA Volume One and BCA Volume Two
of the NCC
� Sets the Fee for a S160B application as $516.30
� Amends form 1 (application for building permit) to include details
of lessee
BUILDING REGULATIONS AMENDMENTS
� New Regulation 116
� Consistency with the concessions under sections 4.3, 4.4 and 4.5
of the Disability (Access to Premises - Buildings) Standards 2010
Applies to
� lessees who submit an application for approval for the building
work
� existing passenger lifts
� existing accessible toilets and
� 'affected parts' of an existing building not subject of a building
permit application to comply with the BCA.
BUILDING REGULATIONS AMENDMENTS
� New definitions
‘access provision'
'affected part'
in relation to a building that is to contain new parts, means-
(a) the principal pedestrian entrance of the building; and
(b) any part of the building that is necessary to provide a continuous
accessible path of travel from the entrance to the proposed new part;
'new part’
in relation to an existing building, means a part of that building that is to
be altered, including an extension to the building, in respect of which an
application for a building permit is made after 1 May 2011.
National Construction Code Series 2011 BCA Volume One and Volume Two
Overview - Main Changes
� Private Bushfire Shelters
� Fire Hazard Properties
� Definitions
� Access
� Referenced Documents
� 6 Star Energy Efficiency
� Other Amendments
Private Bushfire Shelters
Private Bushfire Shelters
� Class 10c – a private bushfire shelter
� Private bushfire shelter means a structure
associated with a Class 1a dwelling that may, as a
last resort, provide shelter for occupants from
immediate life threatening effects of a bushfire.
� In Victoria substitute Class 1 building
Private Bushfire Shelters
New Performance Requirement P2.3.5 BCA Volume Two
- Location relative to fire hazard
- Occupancy of shelter
- Bushfire intensity
- Ready access to and egress from
- Tenability within the bushfire shelter
Private Bushfire Shelters
� No Deemed-to-Satisfy solutions
� Guidance document – ABCB Private
Bushfire Shelters Performance Standard
� Professional judgement required
to develop designs
Fire Hazard Properties C1.10
� Spec C1.10 and Spec C1.10a consolidated
� Defined term – ‘Fire hazard properties’ amended to include Group
Number
� Performance Requirement CP4 application provision included –
applies to linings, materials and assemblies
� C1.10(c) Exemption attached non-building fixture or fitting (e.g.
curtain, blind, whiteboard or the like)
ACCESS
ACCESS – PARTS D3, E3.6, F2.2 AND F2.4
Summary of changes:
� New access requirements additional to those currently in the BCA
� Improvements to access provisions already in the BCA
� Improvements to Australian Standards referenced in the BCA
� Inclusion of a new Part H2 to the BCA – Public Transport Building
Definitions
� Premises standards to apply to new Class 1b
� Class 1b classification now includes:
– 4 or more single dwellings on one allotment and used for short term
holiday accommodation
� Class 1b does not apply to dwellings located above or below
another dwelling
Classification
Class 1 — one or more buildings, which in association constitute —
(b) Class 1b —
(i) a boarding house, guest house, hostel or the like—
(A) with a total area of all floors not exceeding 300 m2 measured over the enclosing walls of the Class 1b building; and
(B) in which not more than 12 persons would ordinarily be resident; or
(ii) 4 or more single dwellings located on one allotment and used for short-term holiday accommodation,
which are not located above or below another dwelling or another Class of building other than a private garage.
Explanatory information:
Class 1b buildings used for short-term holiday accommodation include cabins in caravan parks, tourist parks, farm stay, holiday resorts and similar tourist accommodation. This accommodation itself is typically rented out on a commercial basis for short periods and generally does not require the signing of a lease agreement. Short-term accommodation can also be provided in a boarding house, guest house, hostel, bed and breakfast accommodation or the like.
Table D3.1
New areas of access
Class 2 buildings (flats, apartments, units)
� Required to front door of SOUs on one level
� To and within one of each type of common area (e.g. gym,
swimming pool, lounge area)
� To each level (SOU door and common areas) if served by an AS
1428.1 ramp or a lift
� Note BCA covers all new Class 2 buildings
� Accessible carparking not required for Class 2
New areas of access
Class 10b swimming pools
� To and into a pool with a total perimeter greater than 40 m, associated
with a Class 1b, and Class 2,3 and 5 - 9 buildings required to be
accessible
� Does not apply to a swimming pool for the exclusive use of occupants of
a Class 1b or an SOU in a Class 2 or 3 building
� Access can be provided by-
– Ramp
– Zero depth entry
– Platform swimming pool lift
– Sling lift
Improved access provisions
Building entrances
� Through the principal pedestrian entrance and not less than 50%
of all entrances (including principal entrance)
� If a building has a total floor area of more than 500 square metres
an accessible entrance must be no more than 50 metres from one
that is not accessible.
Improved access provisions
Dimensions and circulation spaces
� Generally a move to larger dimensions to accommodate a larger
percentage of mobility aids
� Doorway widths increased – Required clear width
– BCA 2010 – 800mm
– BCA 2011 – 850mm
� dimensions of lift cars travelling more than 12 m has increased
from 1100 x 1400 mm to 1400 x 1600 mm.
Required clear width
BCA 2010 – 800 mm
BCA 2011 – 850 mm
Improved access provisions
� Unisex accessible sanitary compartment increased 300mm in
both directions
� Backrests required
Improved access provisions
Passing and turning spaces
� Passing spaces every 20 m where direct line of sight not possible
� Turning spaces 2 m before end of an accessway and every 20 m
on an accessway
Lift types
� Introduces a wider range of lift options, with limitations on use
� Specifies features that each type of lift must have
Improved access provisions
Extent of access in buildings
� Class 3 – accessible rooms and one of each common area
� Class 5, 6, 7b, 8, 9a, 9b schools - to and within all areas normally
used by the occupants
� Class 7a carparks – to and within any level containing accessible
carparking spaces
� Class 9b assembly buildings – to wheelchair seating spaces and
other areas normally used by the occupants (but not all seating
levels)
Improved access provisions
Carparking
� Numbers of accessible spaces generally unchanged
– Increase for clinics and day surgery
� The layout of accessible spaces has changed – AS/NZS 2890.6
5400
240024002400
Shared areas
Accessible space
Accessible space
Bollard
Parking aisle or roadway
2400
Improved access provisions
Extent of access in buildings - exemptions
� D3.3 - Small building concession
- Class 5, 6, 7b or 8 buildings
- No more than 3 storeys and upper floors not more than 200 m²
� D3.4 - Access not required where:
- Access is inappropriate because of use of area; or
- Area would pose a health or safety risk
Improved access provisions
Accessible features on stairs
� Every ramp and stairway (other than fire isolated) must comply
with clause 10 and 11 of AS 1428.1
� Fire isolated stairways must have luminance contrast nosing
strips
Improved access provisions
Sanitary facilities
� Generally a unisex accessible toilet must be provided on every
storey where there are toilets
� If more than one bank of toilets on any floor then unisex
accessible toilets at 50% of banks
� Ambulant accessible toilet in addition to unisex accessible toilet
� Left and right handed facilities where more than one provided
Improved access provisions
Signage
� Improved signage about type of hearing augmentation system
used and where receivers can be obtained (if used)
� Signage indicating right or left hand transfer in unisex accessible
sanitary facilities
� Signage indicating ambulant accessible toilets
LH RH
Improved access provisions
Hearing augmentation
� Requirements for specific types of systems included
– Increased area coverage for induction loop system from 15% to
80% of area
– System using receivers must cover 95% of the area and
receivers must be provided as a ratio of the number of occupants
on a sliding scale
� Removal of the 100 m2 room size concession
Improved access provisions
Wheelchair spaces in assembly buildings
� Increased number of wheelchair seating spaces
� Location and grouping specified to provide seating options
including restrictions on how many wheelchair seating spaces can
be located in front rows of cinemas
Improved access provisions
Connection of ramps
� Restriction on vertical rise of connected ramps –not more
than 3.6 m
� Separate landings for step ramps
12
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12
00 lan
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12
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12
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Access - Improved Australian Standards
� AS 1428.1 2009 General requirements for access – New building
work
� AS/NZS 1428.4.1 2009 Means to assist the orientation of people
with vision impairment - Tactile ground surface indicators
� AS/NZS 2890.6 2009 Off-street parking for people with disabilities
Access – Public transport buildings
� New Part H2
� Part H2 provisions transferred from Disability Standards for
Accessible Public Transport
� Part H2 takes precedence over other provisions of the BCA
where there is a difference
BCA REFERENCED DOCUMENTS
BCA referenced documents
Substantial Changes & Edition Updates
� AS 1680 Interior lighting
� AS 1684 Residential timber-framed construction
� AS 1720 Timber structures
� AS 1926 Swimming pool safety – Part 3
� AS 2159 Piling Design and installation
� AS 3600 Concrete structures
� AS 3959 Construction in bushfire-prone areas
� AS 4773 Masonry in small buildings
BCA referenced documents
AS 1680 Interior Lighting
� 2009 edition of Part 0 – Safe movement referenced
AS 1720 Timber structures
� 2010 edition of Part 1 – Design methods referenced
BCA referenced documents
AS 1684 Timber-framed construction
� 2010 editions of Parts 2, 3 & 4 referenced
AS 1926 Swimming pool safety
� 2010 edition of Part 3 - Water recirculation systems referenced
BCA referenced documents
AS 2159 Piling – Design and installation
� 2009 edition referenced in BCA 2010
� 1995 edition removed in BCA 2011
� 12 month transition period now over
AS 3600 Concrete Structures
� 2009 edition referenced
� 2001 edition retained for 12 month transition
BCA referenced documents
AS 3959 Construction of buildings in bushfire-prone area
Amendment 2 to 2009 edition
– Grassland vegetation type
– Sarking
– Log wall construction
BCA referenced documents
AS 4773 Masonry for small buildings
New standards specifically for small buildings
Class 1 and 10a Only
– Part 1 – Design
– Part 2 – Construction
� 12 month transition period
BCA referenced documents
� AS 3500 - Plumbing and drainage Part 3 – Stormwater drainage,
Amendment 2
� AHRI 460 - Remote mechanical-draft air-cooled refrigerant
condensers, 2005 edition
� AHRI 550/590 - Water chilling packages using vapour
compression cycle, 2003 edition
Other Amendments to Volume One & Volume Two
Structural Provisions
� Performance Requirements amended to align with accepted
structural engineering terms:
– “appropriate degrees of reliability”
– “expected design actions”
– “designed to sustain local damage”
Structural ProvisionsB1.4 Glazing - Nickel sulphide inclusions
� 12 month transition period ended
� Spontaneous fracture caused by
nickel sulphide
� Ongoing problem, particularly in
high rise buildings
� Provisions apply to:
- Class 2 – 9 buildings
- Sloped overhead glass higher than 3 m
- Vertical glass higher than 5 m
- Windows and Glass balustrades
Structural ProvisionsB1.4 Glazing - Nickel sulphide inclusions
� Annealed glass; or
� Heat strengthened glass – surface compression of 24 – 45 MPa;
or
� Laminated safety glass – AS/NZS 2208; or
� Toughened glass and heat strengthened glass – surface
compression of >45 MPa
– EN 14179.1; or
– Protective balcony or awning
Measurement of stairway and ramp widths
� Method of measuring a stairway or ramp width relocated from
D2.9 to D1.6
� D2.9 heading amended to include ramps
� 2 m division of handrails amended
Operation of a latch
D2.21
� Concession for operation of latch removed for entry doors to
SOUs in certain Class 3 buildings
� Affects a boarding house, guest house, hostel,
lodging house or backpacker accommodation
Concrete aggregate and curing
3.2.3.1
� Aggregate in concrete to be maximum nominal size of 20 mm
� Concrete must be cured in accordance with good building
practice
Ceiling Heights
� Figure 3.8.2.1 – New diagram to clarify requirements for sloping
ceiling heights
Room Heights Part F3
� Corridor ceiling heights for Class 9b buildings-
– Serving up to 100 people - 2.4 m
– Serving more than 100 people - 2.7 m
Figure 3.8.2.1
Clarify requirements for
sloping ceiling heights
ENERGY EFFICIENCY
Victorian Specific Exclusions Removed
Residential Energy Efficiency Volume One Victorian Appendix
� The limitations and applications in Section J BCA 2010 that
referenced BCA 2009 have been removed
– Class 2 and Class 4 part of a building now referenced
Residential Energy Efficiency Volume Two
� State Variation that referenced BCA 2009 5 star rating has been
removed
– Class 1 and 10a buildings now required to meet 6 star Energy Efficiency
Energy Efficiency
� No major changes to Section J and Part 3.12 in 2011 from BCA
2010
� Two new standards referenced
� Changes to improve consistency between Volume One and
Volume Two
� Clarification of intent
Renewable Energy
� Renewable energy means energy that is derived from sources
that are regenerated, replenished, or for all practical purposes
cannot be depleted and the energy sources include, but are not
limited to, solar, wind, hydroelectric, wave action and
geothermal.
� Clarified Performance Requirements for services
ENERGY EFFICIENCY Volume One
VERIFICATION METHOD JV1
Moved to new Deemed-to-Satisfy Part J0
Performance requirement
Deemed-To-Satisfy Provisions
Stringency:
• Minimum R-
Values
• Glazing
allowance
• etc
• AS/NZS
4859.1
• Installation
• Thermal
breaks
• etc
Alternative solution
Class 2 & 4
• Star
rating
Objective
Functional statement
DTS COMPLIANCE PATHWAY
Sole-occupancy units of a Class 2
building or a Class 4 part
� Star rating approach:
– Average 6 stars
– Minimum 5 stars
� Ceiling fan details
� Specific J1 clauses
� Parts J3 & J5 to J8
Other Classes & Class 2
common areas
� Elemental approach:
– Parts J1 to J8
New Deemed-to-Satisfy Part J0
SO MUST USE STARRATING PLUS ELEMENTAL
APPROACH FOR CLASS 2 SOUs ORCLASS 4 PARTS
BCA 2011 – Volume 1 Part J0.3
� Ceiling fans required as part of J0.2(a) must
- Be permanently installed
- Have a speed controller
� Single fan serving a whole room
- 900 mm for rooms not exceeding 15m²
- 1200 mm for rooms not exceeding 25m²
Solar Absorptance
� Table J1.3a
� Solar absorptance value
– Changed from 0.5 to 0.4
Table J1.3a ROOFS AND CEILINGS – MINIMUM TOTAL R-VALUE FOR EACH CLIMATE ZONE
4.83.73.24.2Minimum Total R-Value for a roof or ceiling with a roof upper surface solar
absorptance value of more than 0.6
4.83.73.23.7Minimum Total R-Value for a roof or ceiling with a roof upper surface solar
absorptance value of more than 0.4 but not more than 0.6
4.83.73.23.2Minimum Total R-Value for a roof or ceiling with a roof upper surface solar
absorptance value of not more than 0.4
UpwardsDownwardsDirection of heat flow
874, 5 & 61, 2 & 3Climate zone
Section J – Part J3 Building Sealing
� Climate zone 5 added to the locations in which habitable room
must have:
– Windows and door seals (J3.4)
– Self closing dampers on exhaust fans (J3.6)
– Self closing dampers on evaporative coolers (J3.7)
� External swing doors:
– Must have a draft protection device on the bottom edge (J3.4)
– Other edges may have compression type seals
ROOF LIGHTS
� Climate Zone 5 added to J3.3 and J3.6(a)
– Roof lights and Construction of roof, wall and floors
� A roof light required ‘to be sealed, or capable of being
sealed’
– Added to clarify intent of provision
AIR-CONDITIONING AND VENTILATION SYSTEMS
J5.2(a)
� SOU removed from J5.2(a)(v)
� Concession for process-related applications
� J5.2(a)(ix):
– Total fan power for the building, not the system
– Small un-ducted air-conditioning units exempt
– Miscellaneous exhaust systems removed
Electric Heating
– Included as an acceptable space heater
– Only limited circumstances for use
– New Table J5.4c
Section J – Part J6 Artificial Lighting and Power
� J6.2(a) for Class 2 SOU’s and Class 4 part
– Use the simple approach (lamp power density LPD); OR
– The more complex approach (illumination power density IPD) where
the allow may be increased if controls are installed
– Base allowances
- 5 W/m2 within the SOU and Class 4 part
- 4 W/m2 on a balcony or verandah
BCA 2010 – Section J – Part J6 Artificial Lighting and Power
� J6.2(a) for Class 2 SOU’s and Class 4 part
– With IPD, adjustment factors are in the existing Table J6.2
– The power of the proposed installation must be used rather
than nominal allowances for exposed batten holders
– Halogen lamps must be separately switched from fluorescent
lamps
� J6.2(b) for Classes 3 and 5 to 9
– Changes to the allowances in Table J6.2
Artificial Lighting
� J6.2(a) – Electronic type of transformer or ballast removed
� J6.3(d) – 95% of light fittings
� J6.3(e) – 250m² area
– floor area of building not storey
BCA 2011 – Section J – Part J7 Hot Water Supply and Swimming Pools and Spa Pool Plant
� Part J7.2 – Hot Water Supply
– No change in 2011
� Note the Victorian Variation
J7.2
A hot water supply system for food preparation and sanitary purposes other than
solar hot water supply system in climate zones 1.2.and 3 must be designed and
installed in accordance with Section 8 3500.4
Delete J7.2 and insert Vic J7.2 as follows:
Vic J7.2 * * * * * * * * * * * *
This clause has deliberately left blank
BCA 2011 Volume Two - Energy Efficiency
2.6 - PERFORMANCE CLAUSES
� OBJECTIVE O2.6
� FUNCTIONAL STATEMENT F2.6
� PERFORMANCE REQUIREMENT P2.6.1 - BUILDING
VICTORIA NO CHANGE
P2.6.2 Services
A building’s domestic services, including any associated distribution system and components must to the degree necessary—
(a) have features that facilitate the efficient use of energy appropriate to—
(i) the domestic service and its usage; and
(ii) the geographic location of the building; and
(iii) the location of the domestic service; and
(iv) the energy source; and
(b) obtain heating energy from—
(i) a source that has a greenhouse gas intensity that does not exceed 100 g CO2-e/MJ of thermal energy load; or
(ii) an on-site renewable energy source or
(iii) another process as reclaimed energy.
Victorian Variation P2.6.2
In Victoria, P2.6.2 does not apply to a hot water
supply system.
Note: In Victoria, the design and installation of a hot
water supply system and rain water tanks are
regulated under the Plumbing Regulations 2008.
VERIFICATION METHODS
� Verification Method V2.6.2.1
– Moved to DTS 3.12 to:
• Give it the same status as Parts 3.12.1 to 3.12.4
• Include some standard DTS clauses
� Verification Method V2.6.2.2
– Retained with minor changes
DEEMED-TO-SATISFY PROVISIONS
New Definitions
Conditioned space
4.3 MJ/hour added to current definition to clarify that heating included
gas as well as the current 1.2 kW
Illumination power density means the total power (in W/m²) that will be
consumed by the lights in a space, including any lamps, ballasts, current
regulators and control devices other than those that are plugged into
socket outlets divided by the area of the space.
Lamp power density means the total maximum power (in W/m²) rating
of the lamps in a space other than those plugged into a socket outlet
divided by the area of the space.
Renewable energy certificate (REC)
A REC is a certificate issued under the Commonwealth Government
Mandatory Renewable Energy Target Scheme
VERIFICATION METHODS
Performance requirement
Deemed-To-Satisfy Provisions
Stringency:
• Minimum R-Values
• Glazing allowance
• etc
• AS/NZS 4859.1
• Installation
• Thermal breaks
• etc
Alternative solution
V2.6.2.1
• Star rating
V2.6.2.2
• Comparative
Objective
Functional statement
DTS COMPLIANCE PATHWAYS
Star rating approach
� 6 stars [3.12.0.1(a)(i)]
� Specific 3.12.1 clauses apply
– 3.12.1.1
– 3.12.1.2(c) & 3.12.1.4(b)
– 3.12.1.2(e)
– 3.12.1.5(c) & (d)
� Part 3.12.3
� Part 3.12.5
Elemental
approach
� Part 3.12.1
� Part 3.12.2
� Part 3.12.3
� Part 3.12.4
� Part 3.12.5
New Part 3.12 with 2 optional pathways
Insulation
3.12.1.1 - New explanatory information added:
� Distance from domestic services
� When insulation acts as a vapour barrier
� Loss of R-value due to compression
BCA 2011 – 3.12.1.2 Roofs
� Increased stringency with Total R value depending on roof colour
� New (a)(ii) - Insulation in a pitch roof
– At least 50% on the ceiling
� Warning on the weight of insulation
� Compensation for loss of ceiling insulation (ie down lights, flues or
exhaust fans)
BCA 2011 – 3.12.1.2 Roofs
� Figure 3.12.1.1
– Now only inherent total R value
BCA 2011 – 3.12.1.3 Roof Lights
� More stringent
� Allowance reduced from 10% to 5%
– Unless needed to comply with Part 3.8
Table 2.12.1.2 roof lights
ROOF LIGHTS
– Explanatory Information includes worst case scenario performance
values
0.64
0.51
0.59
0.72
3.20.633.4Double layer clear
4.20.504.3Single layer translucent (“opal”)
4.20.574.3Single layer tinted
4.20.714.3Single layer clear
Total U-ValuesSHGCTotal U-ValuesSHGC
Flat, framed panelDomed panelTranslucent or transparent element description
WORST CASE WHOLE ROOF LIGHT ELEMENT PERFORMANCE VALUES WITH AN IMPERFORATED CEILING DIFFUSER
4.90.705.40.71Double layer clear
7.90.638.40.57Single layer translucent (“opal”)
7.90.638.40.66Single layer tinted
8.00.798.40.80Single layer clear
Total U-ValuesSHGCTotal U-ValuesSHGC
Flat, framed panelDomed panelTranslucent or transparent element description
WORST CASE WHOLE ROOF LIGHT ELEMENT PERFORMANCE VALUES WITHOUT A CEILING DIFFUSER OR WITH A PERFORATED
CEILING DIFFUSER
BCA 2011 – 3.12.1.4 External Walls
� More stringent
� Two Tables
– 3.12.1.3a for all external walls
– 3.12.1.3b additional for high mass walls
– High mass walls - A surface density of not less than 220 kg/m2
� Figure 3.12.1.3 now only has inherent construction values
� Explanatory information about reducing by R0.17 if air space is
filled
Figure 3.12.1.3
BCA 2011 – 3.12.1.5 Floors
� Provisions for all climate zones
� Total R-Values increased by .25
� Fine tuned approach:
– The requirement is not expressed as “enclosed” or “unenclosed”
– Enclosure details in the typical solutions
� New Sub clause (iii) – “that is enclosed beneath, must have a
barrier to convection installed below floor level between the air
space under the floor and any wall cavities”
Cavity Barrier
BCA 2011 – 3.12.1.6 Attached Class 10a Buildings
� Option (c) now only for climate zone 5 (no longer climate zone 4)
� As well as current provisions:
– Not have a garage door in the east or west orientation sector
OR
– The class 1 buildings glazing is to be reduced by 15%
� Additional Diagrams provided in BCA
BCA 2011– 3.12.2 Glazing
� Equations now include winter solar exposure (Ew) in table 3.12.2a
(Summer exposure factors remain unchanged)
� The design conductance formula changed to include the winter solar
exposure in formula
� Table 3.12.2.1 structure unchanged – only more stringent constants
� Allowances for aggregate conductance and aggregate solar heat
gain:
– Now only for climate zone 1 is the constant multiplied by the area of the
floor
– In other climate zones the constants already takes account of the area of
the floor
– Importantly revised glazing calculator
Glazing
3.12.2.2 - Shading Device
� Additional Explanatory Information provided for Winter access
– refers to the availability of winter solar gains to offset conducted
heat losses
BCA 2011– 3.12.4 Air Movement
In climate zone 4, Three options available for air movement
� Ceiling fans required by table 3.12.4.1
Now two sizes of fans
– 900mm for an area not exceeding 15m2
– 1200mm for an area not exceeding 25m2
� Evaporative cooler
� Ventilation openings 10% floor area
BCA 2011 – 3.12.5 Services
� 3.12.5.2 – Central heating piping:
– Total R value amended to material R value
– Insulation to AS/NZS 4859.1
� 3.12.5.3 – Heating and cooling ductwork
– Total R value amended to material R value
– insulation to abut adjacent insulation plus maintain
position/thickness
– Revised Table 3.12.5.2 - Heating or Cooling Ductwork and
Fittings
BCA 2011– 3.12.5 Services
� New 3.12.5.4 – Electric resistance space heating serving more
than one room to have:
– Separate on-off switches for each room
– Separate temperature control and time switches for each zone
or group of rooms
– Power loads not greater than:
• 110 W/m2 for living areas
• 150 W/m2 for bathrooms
BCA 2011 – 3.12.5 Services
� New 3.12.5.5 – Artificial lighting
– Lamp power density and illumination power density:
• 5 W/m2 in the Class 1 building
• 4 W/m2 for a verandah or balcony
• 3 W/m2 in a Class 10 building
– Artificial lighting around the perimeter of a building must –
• Be controlled by a daylight sensor; or
• Have an average light source efficacy or not less than 40
lumens/W
BCA 2011 – 3.12.5 Services
Artificial Lighting
Table 3.12.5.3
Illumination power density adjustment factor
– Manual dimming system
– Amended from 0.95 to 0.85
– Greater allowance
BCA 2011 – 3.12.5 Services
� New 3.12.5.7 – Pools and Spas
– Swimming pools may only be heated by solar
– Spa pools (≥ 680L) heating – Solar, Gas, Heat pump; or
A combination of the above
– A spa heated by gas or heat pump must:
• have a cover
• Have heater controlled by a push button and also a time
switch
– A swimming pool pump to have a time switch
AMENDED
BCA 2011 – 3.12.5 Services
� New 3.12.5.7 – Pools and Spas
– Heating for a Spa pools sharing a recirculation system with a
swimming pool must be by
• Solar, Gas, Heat pump; or
• A combination of the above
– Same change made to J7.4 of Volume One BCA 2011
ABCB - Toolkits
� Glazing and Lighting Calculators
� Handbooks
� Energy Efficiency Provisions for Electricians & Plumbers
� BCA Section J – Assessment & Verification of an Alternative
Solution
� Available to download from the ABCB website www.abcb.gov.au
Guidance Information Documentation
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