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Lesson Two – Classification of Buildings and Acceptable Construction

CPCCBC4001A Apply building codes and standards to the construction process for low rise building projects. Lesson Two – Classification of Buildings and Acceptable Construction. Note. The following slides make use of the ABCB National Construction Code Awareness Resource Kit

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Lesson Two – Classification of Buildings and Acceptable Construction

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  1. CPCCBC4001A Apply building codes and standards to the construction process for low rise building projects Lesson Two – Classification of Buildings and Acceptable Construction Michael Martin - Cert IV - Codes and Standards 2012

  2. Note • The following slides make use of the ABCB National Construction Code Awareness Resource Kit • And have been condensed or modified to suit this context. Michael Martin - Cert IV - Codes and Standards 2012

  3. Todays Lesson • Handout (next section P 21 to 36) • Classification of Buildings • Performance and Acceptable Construction • Compliance with the BCA • What the BCA applies to Michael Martin - Cert IV - Codes and Standards 2012

  4. National Construction Code Series Volume One Appendices Volume One Guide to Volume One Volume Two Volume Three Building Code Plumbing Code National Construction Code Series Michael Martin - Cert IV - Codes and Standards 2012

  5. Using the BCA – from P21 • Classifications in whole are in Volume 1, Section A, ‘General Provisions’ • Part A3.2 (BCA 2012 from page 39) • Its important to read the rest of the general provisions to see what's applicable to the classifications • BCA Volume 2, section 1.3 (BCA 2012 from page 35) Michael Martin - Cert IV - Codes and Standards 2012

  6. Using the BCA – from P21 • Once the classification has been established the volume applicable to the “proposed building work can be identified” • In most cases for us, it will be Volume Two, for we are working within the residential building sector. • The next step is to work progressively through Section 3 and compare the proposed building work against the Deemed-to-Satisfy Provisions Michael Martin - Cert IV - Codes and Standards 2012

  7. Classification - from P22 • The Classification of a building or part of a building is determined by the purpose for which it is designed, constructed or adapted to be used (BCA, 2012 A3.1). • This helps not only in classifying construction requirements, but also governs various other requirements such as: • those for waterproofing, • sanitary facilities, • room sizes, light, • ventilation and noise control Michael Martin - Cert IV - Codes and Standards 2012

  8. What is a Class of Building? • Not in your text specifically • The Class – or Classification – of a building/structure is determined by the purpose for which it is designed, constructed or adapted to be used. • As the purpose of buildings vary – the BCA has different requirements for different classes of buildings Operation of the BCA Michael Martin - Cert IV - Codes and Standards 2012

  9. Classes of Buildings • Part A3 of the BCA provides detailed descriptions of various classes of buildings. • The classifications and typical examples include: • Class 1a single dwellings / houses • Class 1b small guest / boarding houses • Class 2 dwellings / apartments (above others) • Class 3 hotels / motels (unrelated persons) • Class 4 a single dwelling in a Class 5 to 9 Michael Martin - Cert IV - Codes and Standards 2012

  10. Classes of Buildings • Class 5 offices – not Class 6 to 9 • Class 6 retail shops • Class 7a carparks • Class 7b storage / display warehouses • Class 8 a laboratory or factory • Class 9a health-care building • Class 9b assembly building Operation of the BCA Michael Martin - Cert IV - Codes and Standards 2012

  11. Classes of Buildings • Class 9c aged care building • Class 10a non-habitable building (e.g. a carport/ garage) • Class 10b structure – swimming pool – fence • Class 10c a private bushfire shelter • Buildings can have multiple classifications • Each part of a building must be classified separately, except that if not more than 10%of floor area of the part in which it is located, the major classification may apply (exclusions apply – See A3.3). • Look in your text notes to further explain & view example P24 to 25 Michael Martin - Cert IV - Codes and Standards 2012

  12. Exercise - from P24 • Building Classification ? • 1. abattoirs 8 • 2. hospital 9a • 3. government offices 5 • 4. football ground stadium 9b • 5. two storey house 1a • 6. block of flats 2 • 7. hotel 3 • 8. butter factory. 8 Michael Martin - Cert IV - Codes and Standards 2012

  13. Performance & Acceptable Construction - from P27 • Performance based regulations differ in that they set levels of performance that must be achieved. • also referred to as objective based • set mandatory levels of performance required • do not dictate how to achieve required results • must ultimately be ‘accepted’ by a Certifying Authority Michael Martin - Cert IV - Codes and Standards 2012

  14. Volume Two Contains information on the operation and application of the BCA Section 1 Contains all Performance Requirements for volume Two Section 2 Section 3 Contains Acceptable Construction or the Deemed-to-Satisfy Provisions Michael Martin - Cert IV - Codes and Standards 2012

  15. Acceptable Construction • Acceptable Construction Manuals can include Australian Standards • Acceptable Construction Practice will generally reflect traditional construction techniques ACCEPTABLE CONSTRUCTION ACCEPTABLE CONSTRUCTION MANUALS ACCEPTABLE CONSTRUCTION PRACTICE OR Michael Martin - Cert IV - Codes and Standards 2012

  16. BCA Structure & Example - from P28 • Performance Requirements – state mandatory levels of performance for Building Solutions • Building Solutions – are solutions that comply with Performance Requirements and may be: • a Deemed-to-Satisfy solution • oran Alternative Solution • ora combination of both Michael Martin - Cert IV - Codes and Standards 2012

  17. BCA Structure & Example - • BCA, Part 3, section 3 – Parts 3.1 to 3.12 (BCA 2012 from page 101) • These are “ deemed-to-satisfy provisions that are considered to be acceptable forms of construction that meet the legislative requirements for complying with the housing provisions” (BCA, 2012 p. 101) Michael Martin - Cert IV - Codes and Standards 2012

  18. Scenario One Michael Martin - Cert IV - Codes and Standards 2012

  19. Scenario One • What's the problem ? • Site drainage problem • Causing water ponding in sub floor • Decay of stumps • Decay of timber joists and bearers • What class of building ? • Class 1a, residential house Michael Martin - Cert IV - Codes and Standards 2012

  20. BCA Specific • BCA 3.1.2.3 Surface water must be diverted away from class 1 buildings as follows: • (c) The ground beneath suspended floors must be graded so that the area beneath the building is above the adjacent external finished ground level and surface water is prevented from ponding under the building (see figure 3.1.2.3) • Continues next slide Michael Martin - Cert IV - Codes and Standards 2012

  21. BCA Specific (2012 page 118) Michael Martin - Cert IV - Codes and Standards 2012

  22. BCA Specific (BCA 2012, page 118) • Also consider • 3.1.2.4 Subsoil drainage • Where a subsoil drainage system is installed to divert subsurface water away from the area beneath a building, the subsoil drain must…… • Anything else ?? Michael Martin - Cert IV - Codes and Standards 2012

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