SPECnotes Winter 2011 1

SPECnotesNATSPEC//SPECnotes

➢Air Conditioning and Mechanical Contractors’ Association of Australia

➢Australian Council of Built Environment Design Professions

➢Australian Elevator Association

➢ Australian Institute of Architects

➢ Australian Institute of Building

➢ Australian Institute of Building Surveyors

➢ Australian Institute of Quantity Surveyors

➢Building Commission Victoria

➢ Construction Industry Engineering Services Group

➢ Consult Australia

➢ Department for Transport, Energy and Infrastructure (SA)

➢ Department of Construction and Infrastructure (NT)

➢ Department of Finance and Deregulation (Federal)

➢Department of Public Works (QLD)

➢ Department of Services, Technology and Administration (NSW)

➢ Department of Territory and Municipal Services (ACT)

➢ Department of Treasury and Finance (TAS)

➢ Department of Treasury and Finance (WA)

➢Engineers Australia

➢Master Builders Australia

➢Standards Australia

SPECnotes Construction Information Systems Limited Level 4, 217 Clarence Street SYDNEY NSW 2000 Australia

Phone 1300 797 142 Fax 1300 797 143 Email mail@natspec.com.au Web www.natspec.com.au ISSN 1448-8663 Print post 239556100018

PMS 286 Blue

ACOUSTIC UNDERLAY

To upload an Office edited worksection:

Click on Upload Office Edited File on the SPECBuilder Live Homepage. You will see the Upload User’s Document page.

Click the Choose File button.

Browse for the Office edited worksection file location – make sure this file is a .docx file (Word 7 or later).

Select the file and click Open.

Type in a title e.g. 0451 HS Windows & glazed doors – this title will appear in the SPECbuilder Live file tree. Include initials or text for easy and unique identification. Click Next.

You will see the Create a Reference to Local Network page. Complete the details as follows:

Classification No.: Start typing the Classification number until a drop down box appears. Select the appropriate number and title so that the uploaded worksection appears in the correct location on the Classification tree.Description: This is optional but can be used to provide guidance on the application of the Office edited worksection.

Click Save. Your file is now available in the Classification tree for selection (Office edited worksection files are highlighted and marked Office edited worksection). Clicking on the Office edited worksection title will show the Description if available.

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SPECbuilder Live – Uploading an Office edited worksection

Use SPECbuilder Live to quickly compile a draft project specification of NATSPEC and/or AUS-SPEC worksections. Once the selection of your worksection files is made, the SPECbuilder Live system collects the files and creates a merged master document for inclusion into a zip file for downloading to the designated location on your own system/server.

Editing of all the project specification is then done locally and not online.

It is also possible to include your own Office edited worksection files in the SPECbuilder Live system so that they are then available for selection when creating a new project specification. For uploading into SPECbuilder Live these must be .docx files (Word 7 or later).

2 SPECnotes Winter 2011

STANDARDS REVISING

Australian standards superseded, amended or withdrawn in March, April and May 2011 which are referred to in NATSPEC and will be taken into account in the October 2011 Update, include:

AS 1100 Technical drawing.

Part 301-2008 Architectural drawing.

Amendment 1-2011. (Free on www.saiglobal.com/shop)

This amendment applies to the Preface, clauses 1.5.2.2, 4.2.1.1, 4.2.1.2, 4.2.1.3, 4.2.1.4, 4.2.1.5, 4.3.1.1, 4.3.1.2, 6.3.3, and Figures 4.1, 4.3, 4.10 and 4.11, and Appendix C. It reverts the convention for representing hinged doors and windows to that which existed prior to AS 1100.301-2008 due to non-acceptance by the Australian community.

Referenced worksections: 0171 General requirements; 0802 Hydraulic design and install.

AS/NZS 1170 Structural design actions.

Part 2:2011 Wind actions. ($165.36)

This standard supersedes the 2002 edition. It sets out procedures for determining wind speeds and resulting wind actions to be used in the structural design of structures subjected to wind actions other than those caused by tornadoes.

Referenced worksections: 0171 General requirements; 0316 Precast concrete; 0317 Tilt-up concrete; 0343 Tensioned membrane structures; 0421 Roofing – combined; 0423 Roofing – profiled sheet metal; 0424 Roofing – seamed sheet metal; 0431 Cladding – combined; 0432 Curtain walls; 0436 Cladding – panels; 0451 Windows and glazed doors; 0456 Louvre windows; 0457 External screens; 0461 Glazing; 0467 Glass components; 0554 Stairs, ladders and walkways; 0933 Power generation – photovoltaic.

AS/NZS 1254:2010 PVC-U pipes and fittings for stormwater and surface water applications.

Amendment 1:2011. (Free on www.saiglobal.com/shop)

This amendment applies to the Preface, clauses 1.1, 1.2, 1.3, 2.2, 2.8 (new), 4.6, 5.6(c) (new), 6.3, 6.5(h) (new), Appendix B (new) and Bibliography (new). It sets out additional requirements for pipes and fittings classed as best environmental practice PVC for stormwater and surface water applications.

Referenced worksections: 0074 Stormwater drainage; 0224 Stormwater – site; 0821 Stormwater – buildings.

AS/NZS 1260:2009 PVC-U pipes and fittings for drain, waste and vent application.

Amendment 1:2011. (Free on www.saiglobal.com/shop)

This amendment applies to the Preface, clauses 1.1, 1.3, 1.4, 2.2, 2.8 (new), 4.6, 5.11(d) (new), 6.3, 6.4(i) (new), Appendix C (new) and Bibliography. It sets out additional requirements for pipes and fittings classed as best environmental practice PVC for drain, waste and vent applications.

Referenced documents: 0076 Sewerage systems – reticulation and pump stations (Design); 0224 Stormwater – site; 0421 Roofing – combined; 0423 Roofing - profiled sheet metal; 0424 Roofing – seamed sheet metal; 0425 Roofing – shingles and shakes; 0426 Roofing – slate; 0427 Roofing – tiles; 0811 Sanitary fixtures; 0821 Stormwater – buildings;

1352 Pipe drainage; 1361 Sewerage systems – reticulation and pump stations (Construction).

AS/NZS 1328 Glued laminated structural timber.

Part 1:1998 Performance requirements and minimum production requirements.

Amendment 1:2011. (Free on www.saiglobal.com/shop)

This amendment applies to clauses 1.2, 2.2.1, 2.4.3.1, 2.4.3.2(a), 2.4.3.2(b), 2.5, 2.7.3, 3.3.3, and 4.1.3.1. It updates the referenced documents citations within the standard.

Referenced worksections: 0381 Structural timber; 0382 Light timber framing.

AS 1762-1984 Helical lock-seam corrugated steel pipes – Design and installation. ($31.24)

This standard has been superseded by AS/NZS 2041.2.

Referenced worksections: 0821 Stormwater – buildings; 1352 Pipe drainage.

AS/NZS 2041:1998 Buried corrugated metal structures.

This standard has been superseded by AS/NZS 2041.2:2011 and AS/NZS 2041.6:2010.

Referenced worksections: 0061 Bridges and other structures; 1351 Stormwater drainage (Construction); 1352 Pipe drainage.

AS/NZS 2638 Gate valves for water works purposes.

Part 1:2011 Metal seated. ($107.73)

This standard supersedes the 2002 edition. It specifies requirements for PN 16 and PN 35 solid gate metal-bodied metal-seated gate valves for waterworks purposes with a maximum operating temperature of 40°C.

Referenced worksections: 0071 Water supply – reticulation and pump stations (Design); 0751 Mechanical piping; 0831 Hydrants; 1341 Water supply - reticulation and pump stations (Construction); 1361 Sewerage systems – reticulation and pump stations (Construction).Part 2:2011 Resilient seated. ($101.73)

This standard supersedes the 2006 edition. It specifies requirements for PN 16 and PN 25 metal-bodied resilient-seated gate valves for waterworks purposes.

Referenced worksections: 0071 Water supply – reticulation and pump stations (Design); 0751 Mechanical piping; 0831 Hydrants; 1341 Water supply - reticulation and pump stations (Construction); 1361 Sewerage systems –reticulation and pump stations (Construction).

AS 2700-2011 Colour standards for general purposes. ($145.77)

This standard supersedes the 1996 edition. It defines 206 reference colours to assist with the specification and matching of colours used in industrial, architectural and decorative areas, with particular emphasis on paints and related materials. It provides an explanatory text with tabulated colour data and practical equivalent colours. A foldout chart that gives a general indication of the range of colours is included with the hard copy but not the electronic version of this document. For colour matching purposes, the individual colour cards incorporated in AS 2700S should be used.

Referenced worksections: 0345 Steel – protective paint coatings; 0671 Painting; 0672 Textured and membrane coatings; 0781 Mechanical electrical; 0942 Switchboards – custom-built; 1191 Pavement markings; 1192 Signposting.

AS/NZS 3003:2011 Electrical installations – Patient areas. ($188.20)

This standard supersedes the 2003 edition. The purpose of this standard is to specify special requirements for electrical installations in patient areas. These requirements are additional to those specified in AS/NZS 3000 and the New Zealand Electricity Regulations.

Referenced worksection: 0755 Medical gas systems.

AS 4087-2011 Metallic flanges for waterworks purposes. ($101.73)

This standard supersedes the 2004 edition. It provides manufacturers with requirements for metallic flanges for waterworks purposes and installers of flanged components guidance on the most appropriate jointing requirements to achieve a satisfactory long-term watertight joint.

Referenced worksections: 0071 Water supply – reticulation and pump stations (Design); 0076 Sewerage systems – reticulation and pump stations (Design); 1341 Water supply – reticulation and pump stations (Construction); 1361 Sewerage systems – reticulation and pump stations (Construction).

AS 4795 Butterfly valves for waterworks purposes.

Part 1-2011 Wafer and lugged. ($85.43)

This standard supersedes the 2006 edition. It sets out requirements for PN 10 and PN 16 manually operated resilient-seated wafter and lugged butterfly valves for waterworks purposes, with a maximum operating temperature of 40°C.

Referenced worksections: 1341 Water supply – reticulation and pump stations (Construction); 1361 Sewerage systems – reticulation and pump stations (Construction).

AS 4836-2011 Safe working on or near low-voltage electrical installations and equipment. ($145.77)

This standard supersedes the 2001 edition. It provides workers on low-voltage electrical installations with: (a) the principles of safe working practices; and (b) recommended procedures for safe working practices.

Referenced worksections: 0781 Mechanical electrical; 0941 Switchboards – proprietary; 0942 Switchboards – custom-built.

AS 4934 Incandescent lamps for general lighting service - Test methods.

Part 2-2011 Minimum Energy Performance Standards (MEPS) requirements. ($43.00)

This standard supersedes AS/NZS 4934.2(Int):2008. It specifies minimum energy performance standards requirements for tungsten filament lamps and tungsten halogen lamps used in general lighting services.

Referenced worksection: 0951 Lighting.

STANDARDS NEW

The most significant standards published in March, April and May 2011 which you may need to refer to in a specification, but are not yet cited in NATSPEC, include:

AS/NZS 2041 Buried corrugated metal structures.

Part 2:2011 Installation. ($101.73)

This new standard sets out requirements for the installation of buried corrugated metal structures. Requirements include type and compaction of fill and stiffness considerations

SPECnotes Winter 2011 3

for handling. This standard is for use with AS/NZS 2041.1 and other parts in the AS/NZS 2041 series.

Relevant worksections: 0061 Bridges and other structures; 0821 Stormwater – buildings; 1351 Stormwater drainage (Construction); 1352 Pipe drainage.

AS/NZS 7000:2010 Overhead line design – Detailed procedures ($229.19)

This new standard for overhead line design specifies the general requirements to be met for the design and construction to ensure that the line is suitable for its intended purpose and provides acceptable levels of safety for construction, maintenance and operation. The electrical requirements of this standard apply to alternating current (a.c.) systems with a nominal frequency of 50 Hz.

Relevant worksection: 0921 Low voltage power systems.

OTHER STANDARDS

Miscellaneous publications published in March, April and May 2011 which may be of interest to specifiers, include:

AS/NZS 1418 Cranes, hoists and winches.

Part 10:2011 Mobile elevating work platforms. ($219.70)

This standard supersedes AS 1418.10(Int):2004. It sets out requirements for mobile elevating work platforms in general and, in addition, those intended for specific applications such as use near live electrical conductors, or operation in orchards, where specific design requirements are necessary to address the risks associated with the intended use. Additional requirements are also specified for portable elevating work platforms.

AS 6183-2011 Fire protection equipment - Carbon dioxide extinguishing systems for use on premises - Design and installation (ISO 6183:2009, MOD). ($165.36)

This international standard supersedes AS 4214-2002. It applies only to carbon dioxide fixed fire-extinguishing systems in buildings and other premises on land. Although the general principles could well apply to other uses (e.g. maritime use), for these other uses additional considerations will almost certainly have to be taken into account and the application of the requirements given in this International Standard is therefore unlikely to be fully satisfactory. General information about carbon dioxide as an extinguishing medium is given in Annex D. This can be useful background information for those unfamiliar with the characteristics of this medium.

PROFESSIONAL DEVELOPMENT 2011

It’s that time of the year again – NATSPEC is holding Professional Development seminars in each capital city during July. The Seminar – Specifications: Overview, Production and Word Processiong – will cover the use of SPECbuilder Live and Word 2007 as they apply to specification writing using NATSPEC and/or AUS-SPEC Templates. For further information please go to www.natspec.com.au and download the brochure from Professional Development.

AUS-SPEC NEWS

AUS-SPEC Asset Management Benchmark Survey 2011

The AUS-SPEC Asset Management Benchmark Survey 2011 is intended to assist Councils assess their performance against each other and prioritise forward workflow in maintaining Council assets. The survey was sent out to the CEOs/General Managers of all the Councils in April 2011. We thank all those who have completed the survey. The results will now be compiled and uploaded to our website. They will also be presented at the IPWEA International Public Works Conference in August 2011.

AUS-SPEC October 2011 Update

The AUS-SPEC TECHguides and Contracts worksections are being reviewed for the 2011 Update. Please contact AUS-SPEC if you are willing to share generic information which may be included in AUS-SPEC worksections for the benefit of others, send us any sample contracts based on current AUS-SPEC, participate in our review process or provide feedback via email at aus-spec@natspec.com.au.

EQUIPOTENTIAL EARTH BONDING

A recent subscriber query concerned coverage of equipotential bonding for swimming pools in the NATSPEC Template.

Equipotential bonding is the electrical interconnection of conductive parts to earth, making sure those parts remain at the same electrical potential (voltage) under all conditions and prevent electrical shock for people who are simultaneously in contact with different conductive parts or materials.

AS/NZS 3000: 2007 Wiring rules clause 5.6 sets out the equipotential bonding requirements between electrical equipment connected to the electrical installation earthing system and any conductive parts that may independently be in contact with the mass of earth e.g. conductive piping and taps, conductive cable sheaths and wiring enclosures, conductive reinforcing in showers and bathrooms, exposed conductive (metal) parts of swimming pools and spas, and telephone and telecommunication earthing systems.

NATSPEC addresses equipotential bonding in the 0921 Low voltage power systems worksection. AS/NZS 3000 is a mandatory standard with which the contractor must comply. NATSPEC additionally requires certification of AS/NZS 3000 compliance by a licensed electrician or electrical contractor. However, for contractual precision, it is preferable to also spell out where equipotential bonding is required in the schedule in the 0921 Low voltage power systems worksection.

Bonding can be a complex problem that requires the input of an electrical engineer. The documentation provided by the electrical engineer will vary with the project. For example, in the design of a building with bathrooms, the electrical engineer would not normally specifically address the equipotential bonding requirements for the steel reinforcement in the bathroom but would delegate this responsibility to the electrical contractor.

In the design of a swimming pool, apart from the equipotential bonding of the steel reinforcement, metal fixtures attached to the pool structure or within arm’s reach of the pool edge also need connection to the equipotential system. The issue would be specifically addressed by an electrical engineer involved in the design and may also require architectural consideration.

CHILLER REFRIGERANT PRESSURE RELIEF

Occasionally, NATSPEC is asked to explain the relationship between NATSPEC text and the cited standard. Recently, a subscriber asked about the text for Discharge point relating to refrigerant pressure relief devices for chillers.

Modern refrigerants are chosen for a range of properties, including safety to humans. Despite being non-toxic, they can present a suffocation risk in large quantities if they displace air from an enclosed space. A large chiller might contain several hundred kilograms of refrigerant. For example, a 1000 kWR chiller is likely to contain over 200 kg of refrigerant that potentially can become over 5000 m³ of vapour. Depending on conditions, this is more than enough to displace all the air in a typical chiller plant room.

Under normal conditions, the refrigerant is safely contained in the chiller but in the event of excessive pressure it must be relieved to prevent an explosion. In most large chillers this is done using a rupture disk that breaks when a predetermined pressure is exceeded and releases the refrigerant. If discharged into the plant room, this refrigerant could be fatal to occupants of the room or adjacent spaces if the air is displaced.

Clearly, this is a hazard to be avoided but the relevant Australian standard, AS/NZS 1677.2 clause 3.7.3.1, is not particularly helpful in mandating how it should be avoided. The standard requires that the refrigerant relief vent from a safety device must lead to a safe place, adding in a note, The discharge of a refrigerant to atmosphere may be considered, to vent to a safe place when all reasonably foreseeable dangers arising from that discharge have been removed.

For specific guidance, NATSPEC draws on the American ANSI/ASHRAE 15-2010 standard which includes specific requirements, for example, that the relief be piped outside the building, away from places where people are likely to be (doors windows walkways etc), contain a dirt leg to collect contaminants and be protected from the entry of vermin.

Relevant standards: AS/NZS 1677.2 Refrigerating systems - Safety requirements for fixed applications and ANSI/ASHRAE 15-2010 Safety standard for refrigeration systems.

Relevant NATSPEC worksections: 0711 Chillers - combined, 0716 Chillers - centrifugal, 0717 Chillers – water cooled screw, 0718 Chillers – air cooled screw and scroll and 0761 Refrigeration.

SPECnotes Winter 2011 4

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