ncc bca 2016 section j jv3 assessment alteration and ... · ncc bca 2016 section j jv3 assessment...

NCC BCA 2016 SECTION J JV3 ASSESSMENT

ALTERATION AND ADDITIONS ST AGNES COLLEGE BLOCK A

24 EVANS ROAD ROOTY HILL NSW

PREPARED FOR CEO PARRAMATTA

DATE: 29TH MAY 2019

OUR REFERENCE: 190334-A

ENGINEER: DEAN GORMAN

NCC BCA 2016 Section J JV3 Assessment CEO Parramatta St Agnes College. Block A Our Ref: 190334-A

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Author Dean Gorman

REVISION DATE DESCRIPTION

A 29th May 2019 DA Issue

This report has been prepared in accordance with the terms and conditions of appointment. Greenview Consulting Pty Ltd (ABN 32600067338) cannot accept any responsibility for any use of or reliance on the contents of this report by any third party.


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TABLE OF CONTENTS

INTRODUCTION ............................................................................................................................................... 4

GENERAL ....................................................................................................................................................... 4 PROJECT DESCRIPTION..................................................................................................................................... 4 BUILDING CLASSIFICATION ................................................................................................................................ 4 CLIMATE ZONE ............................................................................................................................................... 4 ARCHITECTURAL DOCUMENTATION .................................................................................................................... 5

PERFORMANCE REQUIREMENTS .................................................................................................................... 6

JP1 .............................................................................................................................................................. 6 JP2 .............................................................................................................................................................. 6 JP3 .............................................................................................................................................................. 6

INTERPRETATION ............................................................................................................................................ 7

BUILDING ENVELOPE ....................................................................................................................................... 8

COMPLIANCE SUMMARY ............................................................................................................................... 10

RESULTS ......................................................................................................................................................... 10

COMPLIANCE REQUIREMENTS ...................................................................................................................... 11

R-VALUE ASSESMENT ..................................................................................................................................... 11

ENERGY SIMULATION INPUTS........................................................................................................................ 13

GENERAL ...................................................................................................................................................... 13 DEEMED TO SATISFY FABRIC.............................................................................................................................. 13 DEEMED TO SATISFY SERVICES ........................................................................................................................... 13 PROPOSED FABRIC .......................................................................................................................................... 14 PROPOSED SERVICES ....................................................................................................................................... 14

ENERGY SIMULATION RESULTS ..................................................................................................................... 15

FURTHER COMPLIANCE REQUIREMENTS ...................................................................................................... 16

PART J1 - BUILDING FABRIC .......................................................................................................................16 PART J3 – BUILDING SEALING ........................................................................................................................... 17 PART J8 – FACILITIES FOR ENERGY MONITORING .................................................................................................. 17

APPENDIX A – GLAZING CALCULATOR ........................................................................................................... 19


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INTRODUCTION

GENERAL

The objective of NCC BCA 2016 Volume 1 Section J is to reduce greenhouse gas emissions by efficiently using energy. This report has been prepared to show how the proposed development at St Agnes Catholic College can meet the requirements of the NCC BCA 2016 Volume 1 Section J. By incorporating the recommendations of this report the building and its services can be capable of efficiently using energy. This report shall be read in conjunction with the Australian Building Codes Board (ABCB) National Construction Code (NCC) 2016 Volume 1.

This assessment is for all new building work including fabric and services. The new building work should not reduce the existing building’s level of energy efficiency.

PROJECT DESCRIPTION

The proposed development involves the creation of new spaces on ground floor and extension of the staff study area on first floor.

BUILDING CLASSIFICATION

Class 5

CLIMATE ZONE

Zone 6


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ARCHITECTURAL DOCUMENTATION

The following architectural documentation from DTA Architects was used for this assessment;

Project No. Drawing No. Drawing Title Rev Date

18036 DA01 Cover Sheet A May 19

18036 DA03 Proposed Site Plan A May 19

18036 DA04 Block A – Ground Floor Existing A May 19

18036 DA05 Block A – First Floor Plan Existing A May 19

18036 DA06 Block A – Roof Plan Existing A May 19

18036 DA08 Demolition Plan – Ground Floor A May 19

18036 DA09 Demolition Plan – First Floor A May 19

18036 DA10 Demolition Plan – Roof Plan A May 19

18036 DA12 Block A – Ground Floor Plan A May 19

18036 DA13 Block A – First Floor Plan A May 19

18036 DA14 Block A – Roof Plan A May 19

18036 DA16 Elevations – Existing A May 19

18036 DA17 Elevations – Existing & New Works A May 19

18036 DA18 Elevations – New Works A May 19

18036 DA19 Elevations & Sections – New Works A May 19


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PERFORMANCE REQUIREMENTS

JP1

A building, including its services, must have, to the degree necessary, features that facilitate the efficient use of energy appropriate to—

a. the function and use of the building and services; and

b. the internal environment; and

c. the geographic location of the building; and

d. the effects of nearby permanent features such as topography, structures and buildings; and

e. solar radiation being—

i. utilised for heating; and

ii. controlled to minimise energy for cooling; and

f. the sealing of the building envelope against air leakage; and

g. the utilisation of air movement to assist heating and cooling; and

h. the energy source of the services.

JP1 is verified using verification method JV3

JP2

This clause has deliberately been left blank.

JP3

Heating such as for a conditioned space must, to the degree necessary, obtain energy from—

a. a source that has a greenhouse gas intensity that does not exceed 100 g CO2-e/MJ of thermal energy load; or

b. an on-site renewable energy source; or

c. another process as reclaimed energy.

http://www.abcb.gov.au/abcbonline/%09%09%09%09%09simpleview.asp?fname=PART-A1.xml#Service

http://www.abcb.gov.au/abcbonline/%09%09%09%09%09simpleview.asp?fname=PART-A1.xml#Envelope


http://www.abcb.gov.au/abcbonline/%09%09%09%09%09simpleview.asp?fname=PART-A1.xml#Conditioned_space


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INTERPRETATION

The following are some useful explanations of terms used throughout this report. These descriptions are taken from the NCC BCA.

Envelope , for the purposes of Section J, means the parts of a building’s fabric that separate a conditioned space or habitable room from—

a. the exterior of the building; or

b. a non- conditioned space including—

i. the floor of a rooftop plant room, lift-machine room or the like; and

ii. the floor above a carpark or warehouse; and

iii. the common wall with a carpark, warehouse or the like.

Conditioned space means a space within a building, including a ceiling or under-floor supply air plenum or return air plenum, where the environment is likely, by the intended use of the space, to have its temperature controlled by air-conditioning, but does not include—

a. a non- habitable room of a Class 2 building or Class 4 part of a building in which a heater with a capacity of not more than 1.2 kW or 4.3 MJ/hour provides the air-conditioning; or

b. a space in a Class 6, 7, 8 or 9b building where the input energy to an air-conditioning system is not more than 15 W/m2 or 15 J/s.m2 (54 KJ/hour.m2) or

c. a lift shaft

Habitable Room means a room used for normal domestic activities, and—

a. includes a bedroom, living room, lounge room, music room, television room, kitchen, dining room, sewing room, study, playroom, family room, home theatre and sunroom; but

b. excludes a bathroom, laundry, water closet, pantry, walk-in wardrobe, corridor, hallway, lobby, photographic darkroom, clothes-drying room, and other spaces of a specialised nature occupied neither frequently nor for extended periods.

http://www.abcb.gov.au/abcbonline/%09%09%09%09%09simpleview.asp?fname=SECT-J.xml

http://www.abcb.gov.au/abcbonline/simpleview.asp?pubid=129&sectpartid=2528#Fabric

http://www.abcb.gov.au/abcbonline/simpleview.asp?pubid=129&sectpartid=2528#Conditioned_space


http://www.abcb.gov.au/abcbonline/simpleview.asp?pubid=129&sectpartid=2528#Habitable_room


http://www.abcb.gov.au/abcbonline/simpleview.asp?pubid=129&sectpartid=2528#Carpark

http://www.abcb.gov.au/abcbonline/simpleview.asp?pubid=129&sectpartid=2528#Common_wall

http://www.abcb.gov.au/abcbonline/simpleview.asp?pubid=129&sectpartid=2528#Carpark

http://www.abcb.gov.au/abcbonline/simpleview.asp?pubid=129&sectpartid=2528#Air-Conditioning

http://www.abcb.gov.au/abcbonline/simpleview.asp?pubid=129&sectpartid=2528#Habitable_room




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BUILDING ENVELOPE

The building envelope is shaded in red as per Figures 1 and 2 below.

Figure 1 – Level 1 (Ground) Envelope


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Figure 2 – Level 2 Envelope


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COMPLIANCE SUMMARY

Performance Requirements JP1 is verified when it is determined that the annual energy consumption of the proposed building with its services is not more than the annual energy consumption of a reference building when—

(i) the proposed building is modelled with the proposed services

(ii) the proposed building is modelled with the same services as the reference building

Compliance is achieved when Criteria 1 and 2 are both met;

JV3 Criteria 1 – Result A < Result C

JV3 Criteria 2 – Result B < Result C

A – Energy Consumption of Proposed Building Fabric and Proposed Services

B – Energy Consumption of Proposed Building Fabric and Deemed to Satisfy Services

C – Energy Consumption of Deemed to Satisfy Fabric and Deemed to Satisfy Services

RESULTS

Annual Energy Consumption (MWh)

A 169.0134

B 169.0134

C 169.0601

Criteria 1 A < C ✓

Criteria 2 B < C ✓

JV3 Compliance Achieved


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COMPLIANCE REQUIREMENTS

Building Element Proposed Building

Roof and Ceiling Total R3.5 – New Metal Roof

Roof Colour (Solar Absorptance)

Any colour

External Walls Total R2.8 – New Brick Cavity Wall Total R2.8 – New FC Clad Wall

External Walls (Solar Absorptance)

Any colour

Internal Walls No insulation required

Floor No insulation required – Concrete Slab on Ground No insulation required – Suspended Concrete Slab

Glazing

U-Value 4.5, SHGC 0.47 (Timber Framed Single Glazed Low E Clear) U-Value 5.0, SHGC 0.55 (Aluminium Framed Single Glazed Low E Clear) U-Value 3.4, SHGC 0.34 (Double Glazed Fixed Skylights) Note: U-Value must be less than or equal to the above and SHGC must be within ±10%

Services DTS compliant systems

R-VALUE ASSESMENT

Proposed Roof and Ceiling – Metal Roof

Layer Layer Description R-Value

1 Outdoor Air Film (7m/s) 0.03

2 Metal Cladding 0.00

3 Airspace (reflective and unventilated) 0.18

4 13mm Plasterboard 0.07

5 Indoor Air Film (still air) 0.16

Wall Construction Total 0.44

Additional Insulation Needed 3.06

Minimum Total R-Value required 3.5


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Proposed External Wall – Cavity Brick



2 110mm Brickwork 0.14

3 Air gap (non-reflective and unventilated) 0.17

4 110mm Brickwork 0.14






Proposed External Wall – FC Clad Wall



2 Fibre Cement Cladding 0.00

3 Airspace (non-reflective and unventilated) 0.17







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ENERGY SIMULATION INPUTS

GENERAL

The annual energy consumption in MWh has been calculated using the BCA 2016 JV3 Verification using a reference building method. The simulation software used was IES Virtual Environment version 2018.0.1.0 in accordance with Australian Building Codes Board (ABCB) Protocol for Building Energy Analysis Software.

The inputs used for the proposed and deemed to satisfy fabric and services was as per the following and JV3 (d). Further data inputs and resultant outputs from the IES simulation are available upon request.

DEEMED TO SATISFY FABRIC

Building Element Reference Building Deemed-to-Satisfy

Roof and Ceiling Total R3.2

Roof (Solar Absorptance) 0.7 (as per BCA Specification JV3)

External Walls Total R2.8 and Total R2.3 where shaded (as per BCA Specification JV3)


0.6 (as per BCA Specification JV3)

Internal Walls Total R1.0 – adjacent to enclosed non-conditioned spaces

Floors No insulation required – Concrete slab on ground Total R2.0 – Suspended concrete slab exposed to outside

Glazing (all) Refer to Appendix A for DTS Glazing Calculators

DEEMED TO SATISFY SERVICES

AIR CONDITIONING

The air conditioning systems used in the energy simulation calculation follow the Deemed to Satisfy requirements of BCA 2016 Section J5;

Internal Design Conditions

Summer: 26.0°C

Winter: 18.0°C

LIGHTING

As per JV Specification requirements for Class 5 buildings.

OCCUPANCY AND EQUIPMENT



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PROPOSED FABRIC

Building Element Proposed Building

Roof and Ceiling Total R3.5 – New Metal Roof

Roof Colour (Solar Absorptance)

Any colour

External Walls Total R2.8 – New Brick Cavity Wall Total R2.8 – New FC Clad Wall


Any colour

Internal Walls No insulation required

Floor No insulation required – Concrete Slab on Ground No insulation required – Suspended Concrete Slab

Glazing

U-Value 4.5, SHGC 0.47 (Timber Framed Single Glazed Low E Clear) U-Value 5.0, SHGC 0.55 (Aluminium Framed Single Glazed Low E Clear) U-Value 3.4, SHGC 0.34 (Double Glazed Fixed Skylights) Note: U-Value must be less than or equal to the above and SHGC must be within ±10%

Services DTS compliant systems

PROPOSED SERVICES

AIR CONDITIONING

The air conditioning systems used in the energy simulation calculation follow the Deemed to Satisfy requirements of BCA 2016 Section J5;

Internal Design Conditions

Summer: 26.0°C

Winter: 18.0°C

LIGHTING


OCCUPANCY AND EQUIPMENT



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ENERGY SIMULATION RESULTS

Result Heating (MWh)

Cooling (MWh)

Fans (MWh)

Lighting (MWh)

Equipment (MWh)

Total (MWh)

A – Annual Energy Consumption of

Proposed Building Fabric and Proposed Services

9.7468 10.4986 2.7007 52.3847 93.6826 169.0134

B – Annual Energy Consumption of

Proposed Building Fabric and Deemed to Satisfy

Services

9.7468 10.4986 2.7007 52.3847 93.6826 169.0134

C – Annual Energy Consumption of Deemed

to Satisfy Fabric and Deemed to Satisfy

Services

9.7822 10.5092 2.7014 52.3847 93.6826 169.0601


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FURTHER COMPLIANCE REQUIREMENTS

As part of the JV3 compliance, the following Deemed to Satisfy requirements are still applicable.

PART J1 - BUILDING FABRIC

J1.2 THERMAL CONSTRUCTION

a. Where required, insulation must comply with AS/NZS 4859.1 and be installed so that it—

i. abuts or overlaps adjoining insulation other than at supporting members such as studs, noggings, joists, furring channels and the like where the insulation must be against the member; and

ii. forms a continuous barrier with ceilings, walls, bulkheads, floors or the like that inherently contribute to the thermal barrier; and

iii. does not affect the safe or effective operation of a service or fitting

b. Where required, reflective insulation must be installed with—

i. the necessary airspace to achieve the required R-Value between a reflective side of the reflective insulation and a building lining or cladding; and

ii. the reflective insulation closely fitted against any penetration, door or window opening; and

iii. the reflective insulation adequately supported by framing members; and

iv. each adjoining sheet of roll membrane being—

A. overlapped not less than 50 mm; or

B. taped together.

c. Where required, bulk insulation must be installed so that—

i. it maintains its position and thickness, other than where it is compressed between cladding and supporting members, water pipes, electrical cabling or the like; and

ii. in a ceiling, where there is no bulk insulation or reflective insulation in the wall beneath, it overlaps the wall by not less than 50 mm.

d. Roof, ceiling, wall and floor materials, and associated surfaces are deemed to have the thermal properties listed in Specification J1.2.

J1.3 ROOF AND CEILING CONSTRUCTION

c. Where for operational or safety reasons associated with exhaust fans, flues or recessed downlights, the area of required ceiling insulation is reduced, the loss of insulation must be compensated for by increasing the R-Value of the insulation in the remainder of the ceiling in accordance with below;

Percentage of ceiling area uninsulated

Minimum R-Value of ceiling insulation required to satisfy J1.3(a)

R3.5

0.5% to less than 1.0% 4.0

1.0% to less than 1.5% 4.4

1.5% to less than 2.0% 4.8

2.0% to less than 2.5% 5.3

2.5% to less than 3.0% 5.9

3.0% or more Not permitted

http://www.abcb.gov.au/abcbonline/%09%09%09%09%09simpleview.asp?fname=PART-A1.xml#Required



http://www.abcb.gov.au/abcbonline/%09%09%09%09%09simpleview.asp?fname=PART-A1.xml#Reflective_insulation


http://www.abcb.gov.au/abcbonline/%09%09%09%09%09simpleview.asp?fname=PART-A1.xml#R-Value



http://www.abcb.gov.au/abcbonline/%09%09%09%09%09simpleview.asp?fname=PART-A1.xml#Window




http://www.abcb.gov.au/abcbonline/%09%09%09%09%09simpleview.asp?fname=PART-J-SPECS.xml#SPEC-J1.2


http://www.abcb.gov.au/abcbonline/simpleview.asp?pubid=129&sectpartid=2554#Table-J1.3b



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d. A thermal break, consisting of a material with an R-Value of not less than R0.2, must be installed between the metal sheet roofing and its supporting metal purlins, metal rafters or metal battens if the metal sheet roofing is fixed to metal purlins, metal rafters, or metal battens and there is no ceiling lining or the ceiling lining is fixed directly to those metal purlins, metal rafters or metal battens.

J1.5 WALLS

c. A thermal break, consisting of a material with an R-Value of not less than R0.2, must be installed between any lightweight cladding (weatherboards, fibre cement or metal sheeting) and its supporting metal frame if the lightweight cladding is fixed to the metal frame and there is no wall lining or the wall lining is fixed directly to the metal frame.

PART J3 – BUILDING SEALING

J3.4 WINDOWS AND DOORS

a. A seal to restrict air infiltration must be fitted to each edge of a door, openable window or the like that is part of the building envelope.

b. The requirements of (a) do not apply to a window complying with AS2047, a fire door or smoke door, or a roller shutter, roller shutter grille or other security door or device installed only for out-of-hours security.

c. A seal required by (a) for the bottom edge of an external swing door, must be a draft protection device and for the other edges of an external door or the edges of an openable window or other such opening, may be a foam or rubber compression strip, fibrous seal or the like.

d. Any entrance to a building, if leading to a conditioned space must have an airlock, self-closing door, revolving door or the like.

J3.5 EXHAUST FANS

All toilet and kitchen exhaust fans must be fitted with a sealing device such as a self-closing damper or the like.

J3.6 CONSTRUCTION OF ROOF, FLOORS AND WALLS

a. Roofs, ceilings, walls, floors and any opening such as a window frame, door frame, roof light frame or the like must be constructed to minimise air leakage in accordance with (b)

b. Construction required by (a) must be enclosed by internal lining systems that are close fitting at ceiling, wall and floor junctions or sealed by caulking, skirting, architraves, cornices or the like.

c. The requirements of (a) do not apply to openings, grilles and the like required for smoke hazard management.

PART J8 – FACILITIES FOR ENERGY MONITORING

J8.1 APPLICATION OF PART

The deemed to satisfy provisions of Part J8 Facilities for Energy Monitoring apply to this building.

J8.2

This clause has been deliberately been left blank.





http://www.abcb.gov.au/abcbonline/simpleview.asp?pubid=129&sectpartid=2555#J3.4-a


http://www.abcb.gov.au/abcbonline/%09%09%09%09%09simpleview.asp?fname=PART-A1.xml#Conditioned_space

http://www.abcb.gov.au/abcbonline/%09%09%09%09%09simpleview.asp?fname=PART-A1.xml#Self-closing


http://www.abcb.gov.au/abcbonline/%09%09%09%09%09simpleview.asp?fname=PART-A1.xml#Roof_light

http://www.abcb.gov.au/abcbonline/simpleview.asp?pubid=129&sectpartid=2555#J3.6-b






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J8.3 FACILITIES FOR MONITORING ENERGY

a. The building must have the facility to record the consumption of gas and electricity.

b. Not applicable

c. Not applicable


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APPENDIX A – GLAZING CALCULATOR


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