BCA Section J Compliance Report Alterations & …

1 BCA Section J. Compliance Report Alterations & additions to Cottage at St Johns College 10 Missenden Road Camperdown Prepared by: Gradwell Consulting ABN 68 872 791 784. Sustainability Consultants PO Box 819. Bowral NSW 2576. t: 1800 11 24 25. e: w: BCA Section J Compliance Report Alterations AND additions . St Johns College Camperdown Table of Contents J0 Section J Overview ..3. J1 Building Fabric ..5. J2 External Glazing ..7. J3 Building Sealing ..8. J5 Air Conditioning and Ventilation Systems ..9. J6 Artificial Lighting and Power ..10. J7 Hot Water Supply ..11. J8 Access for Maintenance & Facilities for Monitoring ..11. Appendices ..11. Document Control Revision Date Description - 5 December 2014 Preliminary email assessment 1 15 January 2015 Draft Report Final 16 January 2015 Issued File: Section J Report St Johns College TN5 16 January 2015 Page 2 of 11.

2 BCA Section J Compliance Report Alterations AND additions . St Johns College Camperdown J0 Section J Overview Background on Energy Efficiency In response to concerns over global warming, the Australian Government announced in July 2000 that agreement had been reached with industry and State and Territory Governments to adopt a two-pronged approach to reducing greenhouse gas emissions from buildings. The first approach was the introduction of mandatory minimum energy performance requirements through the Building Code of Australia (BCA), and the second approach was the encouragement of best practice voluntary initiatives by industry. Industry was supportive of this two-pronged approach, taking the view that building-related matters should be consolidated in the BCA wherever possible.

3 Given the importance of the energy performance of buildings to overall national greenhouse gas emissions performance, the Australian Building Codes Board (ABCB) and the Australian Greenhouse Office signed a Memorandum of Understanding to jointly develop the BCA. Energy Efficiency Provisions. The Energy Efficiency Project was endorsed under the National Framework for Energy Efficiency (NFEE), an agreement between all Australian Governments established to improve energy efficiency. The objective of NFEE is to unlock the significant economic potential associated with increased implementation of energy efficiency technologies and processes to deliver a least cost approach to energy efficiency in Australia. Introduction This Report describes the Compliance of the proposed Alterations and additions with the energy efficiency requirements as specified by Section J of Volume One of the Building Code of Australia 2014 and NSW Subsection J(A).

4 The review is based on the Deemed-To-Satisy (DTS) method of verification. No assessment is made of the Class parts of the building including the ground floor student entry. The ground floor office is a change of use so the Class 5 parts must meet BCA 2014 in full. The Report is based on the drawings by True North Architects (following table) and additional information received from the client. Drawing No. Title Revision A0-01 Cover sheet & perspectives T1. A1-01 Site Plan T1. A2-01 Ground floor plan T1. A2-02 First floor plan T1. A3-01 Elevations T1. A4-01 Sections T1. A7-02 Doors & Windows T1. A8-01 Electrical T1. File: Section J Report St Johns College TN5 16 January 2015 Page 3 of 11. BCA Section J Compliance Report Alterations AND additions .

5 St Johns College Camperdown Building Class The ground floor of the building is assessed as Class 5 (office). Climate Zone The site is Climate zone 5. Compliance Summary The following table provides a summary of Compliance . Please refer to the full Report for information on construction types and assumptions. The details in this Report take precedence over other documents including any Specifications. Part Name Description Application Applies to the envelope. General Refer to the detail in the Report . Roof & Ceiling Some office roof/ceiling Total R-Value of (down). Roof Lights Refer to the detail in the Report . Walls Refer to the detail in the Report . Floors No minimum Total R-Value required. J2 Glazing Uw= , SHGCw= except existing window.

6 J3 Sealing Refer to the detail in the Report . J5 Air/Con & Ventilation Refer to the detail in the Report . J6 Lighting IPL of lighting not to exceed kW. J7 Hot Water Supply Refer to the detail in the Report . J8 Access Refer to the detail in the Report . File: Section J Report St Johns College TN5 16 January 2015 Page 4 of 11. BCA Section J Compliance Report Alterations AND additions . St Johns College Camperdown J1 Building Fabric Application of Part Because of its intended use, the office is considered a conditioned space. The envelope applicable in Part J1 is the boundary between the conditioned area and the adjacent non- conditioned areas. Hence the floor, roof/ceiling and some external/internal walls is the envelope applicable in Part J1.

7 Thermal Construction General It is important that the building is constructed in a manner that achieves a thermally effective building envelope. Clause contains a broad range of requirements that apply to insulating the building fabric. Test reports complying with the appropriate Standard may be required to confirm insulation levels. (a) Integrity of the Insulating The installation of insulation must comply with the requirements of the BCA and AS/NZS. and be installed so that the insulation abuts or overlaps adjoining insulation other than at supporting members; and forms a continuous barrier with ceilings, walls, bulkheads, floors or the like; and not affect the safe and effective operation of services. (b) Installation of Reflective Insulation Any reflective insulation must be installed with the correct airspace; be close fitting to any door or window opening; be adequately supported; and adjoining sheet of roll membrane must be overlapped not less than 50 mm or taped together.

8 (c) Installation of Bulk Insulation Bulk insulation must be installed so that it maintains its position and thickness other than where it crosses roof battens, water pipes, electrical cabling or the like. Roof and Ceiling Construction The roof and ceiling above the finance manager/accounts/lobby/kitchenette is not part of the envelope as there is conditioned space (Class 3) above. The roof/ceiling of the meeting room/toilet/facility manager area must achieve a Total R-Value of down in accordance with BCA 2014 Table for a roof with a solar absorptance more than ( dark). For example, metal deck/aircell insulbreak 65/air space/140mm bulk/plasterboard gives a total R-Value of which exceeds the minimum required. Roof Lights The strip roof light over the meeting room must comply.

9 The roof light area should not exceed in which case the maximum U-Value is and the maximum SHGC is File: Section J Report St Johns College TN5 16 January 2015 Page 5 of 11. BCA Section J Compliance Report Alterations AND additions . St Johns College Camperdown Walls The external walls that are part of the envelope must have a Total R-Value of as required by BCA 2014 Table - Climate Zone 5 where the surface density is not less than 220. kg/m2. The non-external wall between the facility manager/toilet and the bin room must have a Total R-Value of as required by BCA 2014 Table - Climate Zone 5. The wall between the finance manager room and the student entry is not part of the entry assuming that the student entry is a conditioned space.

10 The following table describes possible wall systems: Envelope Wall Required Achieved Construction Example Total R- Total R- Value Value External 190mm dense block / air space/brick / 60mm XPS /. (heavyweight) plasterboard External Brick / air space / brick / 50mm K17 insulated (heavyweight) plasterboard Non-external 190mm dense block / 50mm XPS / plasterboard Floors The floor of the ground floor is a slab on ground without an in-slab heating or cooling system so no minimum Total R-Value is required in accordance with BCA 2014 Table File: Section J Report St Johns College TN5 16 January 2015 Page 6 of 11. BCA Section J Compliance Report Alterations AND additions . St Johns College Camperdown J2 External Glazing Application of Part This part applies to the elements forming the envelope.