NCC Section J DTS Report - Blacktown City Council · Due care and skill has been exercised in the...

NCC Section J DTS Report

Good Luck Plaza 5-19 George Street, Blacktown NSW 2148

PREPARED FOR PREPARED BY

Jackson Teece Northrop Consulting Engineers

Lot 1, Pier 8-9 Level 11, 345 George Street

23 Hickson Road Sydney NSW 2000

Walsh Bay NSW 2000

Tel: 0292902722 Tel: 02 9241 4188

Ref: SY181363-00-SER03

Rev: B

Date: 11.04.2019

REPORT

SY181363-00-SER03: Good Luck Plaza NCC Section J DTS Report | Rev B | 11.04.2019 Page 1

NCC SECTION J DTS REPORT

Activity Schedule

Date Revision Issue Prepared By Approved By

18.03.2019 A Preliminary J.Caparrotta M.Dempsey

11.04.2019 B DA Issue J.Caparrotta B. Fung

Northrop Consulting Engineers Pty Ltd

ACN 064 775 088 | ABN 81 094 433 100

Level 11, 345 George Street, Sydney NSW 2000

02 9241 4188 | [email protected] | www.northrop.com.au

© 2019 Northrop Consulting Engineers Pty Ltd. All rights reserved.

This document has been prepared on behalf of and for the exclusive use of Jackson Teece and is subject to and issued in accordance with

the agreement between Jackson Teece and Northrop Consulting Engineers. Northrop Consulting Engineers accepts no liability or

responsibility whatsoever for it in respect of any use of or reliance upon this document by any third party. Copying this document without the

permission of Jackson Teece or Northrop Consulting Engineers is not permitted.


TABLE OF CONTENTS

1. Summary ............................................................................................................................................................. 3

2. Report Limitations ............................................................................................................................................... 4

3. DTS Assessment ................................................................................................................................................ 5

3.1 Referenced Drawings ................................................................................................................................. 5

3.2 Building Classification ................................................................................................................................ 6

3.3 J1 Building Fabric ....................................................................................................................................... 6

3.4 J2 Glazing .................................................................................................................................................. 9

Appendix A - Glazing Calculators ........................................................................................................................... 11

Appendix B - Building Thermal Boundary Markup ................................................................................................... 15


1. SUMMARY

Northrop Consulting Engineers have been engaged to conduct a NCC Section J Deemed-to-Satisfy (DTS)

assessment according to National Construction Code (NCC) 2016, Sections J1 & J2. This summary report

provides minimum compliance requirements for Building Fabric (J1) and Glazing (J2).

The table below outlines compliance requirements for J1 and J2;

Table 1: Insulation and Glazing System requirements for the main building elements

* Refer to Table 4 for individual glazing requirements

Should the requirements listed above be deemed unfeasible, it is recommend that the project team should

proceed with a JV3 performance based solution. This approach is more flexible as it offers a holistic assessment

of the building performance, rather than individual components.

Building Fabrics Required total R-

value Equivalent insulation / glazing example

Roof and Ceiling 3.2 Equates to 155mm Fletcher R3.0 Pink Batts

insulation

External Walls 2.8 Equates to 90mm R2.5HD Fletcher Pink

Batts Insulation

South Facing Walls 2.3 Equates to 70mm R2.0HD Fletcher Pink

Batts insulation

Well Shaded Walls >30° Projection 2.3 Equates to 70mm R2.0HD Fletcher Pink

Batts insulation

Well Shaded Walls >60° Projection 1.8 Equates to 70 mm R1.5 Fletcher Pink Batts

insulation

Insulated Partition Walls 1.8 Equates to 70 mm R1.5 Fletcher Pink Batts

insulation

Suspended Floors 2.0 Equates to 70mm R1.7 Fletcher Pink Batts

Silencer Insulation

Floors and Ceilings to non-

conditioned space e.g. Plantrooms 1.0 Equates to 25mm R0.7 Bradford Multitel

Blanket insulation


2. REPORT LIMITATIONS

Due care and skill has been exercised in the preparation of this report.

This report is intended as a guide to illustrate the potential NCC section J compliance methods to be considered

in the development. It should be read in conjunction with the other design documentation and specific applications

may vary during the development of the project.

No responsibility or liability to any third party is accepted for any loss or damage arising out of the use of this

report by any third party. Any third party wishing to act upon any material contained in this report should first

contact Northrop for detailed advice, which will take into account that party’s particular requirements.


3. DTS ASSESSMENT

3.1 Referenced Drawings

Drawing No. Rev Date Title

DA-100.5 A 18/03/2019 Floor Plan – Upper Ground

DA-100 A 18/03/2019 Floor Plan - Ground

DA-101 A 18/03/2019 Floor Plan – Level 1



DA-201 A 18/03/2019 Street Elevation – South- (George Street)

DA-202 A 18/03/2019 Street Elevation – East (Sunny Holt Rd) & West

DA-203 A 18/03/2019 Street Elevation – North – Humphries Ln)

DA-204 A 18/03/2019 East Tower – Elevation South & West

DA-205 A 18/03/2019 East Tower – Elevation North & East

DA-206 A 18/03/2019 West Tower – Elevation South & West

DA-207 A 18/03/2019 West Tower - Elevation East

DA-401 B 28/03/2019 East Tower Section – East West

DA-403 A 18/03/2019 West Tower – Section – North South

DA-404 A 18/03/2019 Podium - Section

DA-405 A 18/03/2019 Podium - Section


3.2 Building Classification

The Good Luck Plaza development is classified as

a) Basement Level 1-8: Class 7a (Car-parking);

b) Ground Floor & Level 1: Class 6 (Retail);

c) Level 2 Western Tower: 9b (Public assembly/community space and gym);

d) Level 2 Eastern Tower: Class 9b (Childcare);

e) Levels 2-23: Class 2 (Residential);

and is located in 5-19 George Street, Blacktown NSW 2148 which belongs to climate zone 6 as shown in Figure 1

below.

3.3 J1 Building Fabric

Building fabric thermal insulation requirements apply to the building fabric that encloses habitable and conditioned

spaces forming parts of the thermal boundary of the site. Refer to appendix B for marked up drawings which

examine and identify thermal insulation requirements for the building.

Figure 1: Climate Zone Map - Blacktown


The tables below outline typical compliance requirements;

a) R3.2 Flat Concrete Roof and Ceiling construction example

Item Description R-Value

Outdoor Air Film (7m/s) 0.04

40mm Waterproof Membrane 0.03

200mm Solid Concrete Slab 0.14

R3.0 Ceiling Insulation 3.0

13mm Plasterboard/Ceiling Tiles 0.08

Indoor Air Film 0.11 Required

Total R-Value: 3.4 3.2

*Equates to 155mm Fletcher R3.0 Pink Batt Insulation

A roof that has metal sheet roofing fixed to metal purlins, metal rafters or metal battens; and does not have a

ceiling lining or has a ceiling lining fixed directly to those metal purlins, metal rafters or metal battens, must have a

thermal break, consisting of material with an R-Value of not less than R0.2, installed between the metal sheet

roofing and its supporting metal purlins, metal rafters or metal battens.

b) R2.8 External Walls (Brickwork) construction example


Outdoor Air Film 0.04

110mm Brickwork 0.18

R2.5 Insulation* 2.5

13mm Plasterboard 0.08



*Equates to 90mm R2.5HD Fletcher Pink Batts Insulation

c) R2.3 External Walls (Brickwork) construction example



110mm Brickwork 0.18





*Equates to 70mm R2.0HD Fletcher Pink Batts Insulation


d) R1.8 External Walls construction example








*Equates to 70mm R1.5 Fletcher Pink Batts Insulation

A wall that has lightweight external cladding such as weatherboards, fibre-cement or metal sheeting fixed to a

metal frame; and does not have a wall lining or has a wall lining that is fixed directly to the same metal frame,

must have a thermal break, consisting of a material with an R-Value of not less than R0.2, installed between the

external cladding and the metal frame.

e) R1.8 Insulated partition construction example


Indoor Air Film 0.11






*Equates to 70mm R1.5 Fletcher Pink Batts Wall Insulation

f) R2.0 Suspended external floor construction example



Concrete Panel 0.09


19mm Timber Floor 0.12



*Equates to 70mm R1.7 Fletcher Pink Batts Silencer Insulation


g) R1.0 Floor and ceiling to non-conditioned area construction example


Indoor Air Film 0.11

200mm Solid Concrete Slab 0.14





*Equates to 25mm R0.7 Bradford Multitel Insulation Blanket

3.4 J2 Glazing

Glazing requirement in terms of U-value and Solar Heat Gain Coefficient (SHGC) as well as indicative glazing

type are listed below. The DTS glazing calculator assess the glazing on different orientations independently, thus

the below provides different glazing requirement on different orientation and example of equivalent glazing

product;

Table 3: DTS Glazing requirements

Ground Floor

Orientation U-Value SHGC Equivalent Glazing

E 4.7 0.49 Single Glazed 4mm SolTech Neutral

SE 2.7 0.65 Double glazed 6mm Clear / 12mm Air Gap /

6mm Energy Advantage

S 3.3 0.70 Double glazed, 4mm clear / 14mm Air gap /

4mm clear

SW 3.1 0.67 Double glazed 6mm Clear / 12mm Air Gap /

6mm Clear

Upper Ground


NE 5.5 0.73 Single glazing – 10.38mm Clear Laminate

SW 2.9 0.66 Double glazed, 4mm clear / 10mm Air gap /

4mm clear


Level 1


N 5.0 0.44 6.38mm ComfortPlus Grey

NE 6.0 0.76 Single glazed 6mm Clear

E 1.3 0.15 N/A

SE 1.6 0.70 N/A

S 2.7 0.65 Double glazed 6mm Clear / 12mm Air Gap /

6mm Energy Advantage

SW 2.1 0.62 Double Glazed 6mm Clear / 12mm Argon Gap

/ 6mm Energy Tech

NW 5.0 0.70 Single 4mm LowE Clear Glazing

Level 2


SE 1.7 0.32 Double glazed Viridian Light Bridge Grey

5mm / 14mm air gap / 5mm

S 2.4 0.42 Double glazed 6mm Sunergy Clear / 12mm

Argon gap / 6mm clear

There is no single uniform glazing solution available. It is recommended that the project team consider a JV3

performance-based approach solution which would provide greater flexibility around compliant glazing options

and potentially provide cost savings for the project.


APPENDIX A - GLAZING CALCULATORS

Ground Level


Upper Ground


Level 1


Level 2


APPENDIX B - BUILDING THERMAL BOUNDARY MARKUP

Ground – Walls, Ceiling and Roof


Upper Ground Walls, Ceiling and Roof


Level 1 - Walls and Ceiling


Level 1 - Walls and Floor


Level 2- Walls and Floor


Level 2 – Walls and Ceiling

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