4.1 Design Process
This section outlines the design process for determining the adequacy of Hebel PowerWall.
STEP 1: Determine the wind category, stud framing layout and PowerPanel height requirements.
STEP 2: Design Criteria. Where required identify the BCA Performance Requirements:
- Fire Resistance Level (FRL).
- Sound insulation performance (Rw values).
- Energy Efficiency (R-Value).
STEP 3: The flowchart below can be used to select a type, spacing and quantity of top hats and fixings to suit requirements.
STEP 4: Select insulation and/or sarking material to suit energy efficiency and condensation requirements.
STEP 5: Check adequacy of sound insulation and fire resistance level.
STEP 6: Complete detailed design and documentation.
4.2 Compliance With the Building Code of Australia (BCA)
All building solutions, such as walls, floors, ceilings, etc. must comply with the regulations outlined in the BCA or other authority.
The BCA is a performance based document, and is available in two volumes which align with two groups of ‘Class of Building’:
Volume 1 – Class 2 to Class 9 Buildings; and
Volume 2 – Class 1 & Class 10 Buildings – Housing Provisions.
Each volume presents Regulatory Performance Requirements for different Building Solutions for various classes of buildings and performance provisions.
These Performance Provisions include: Structure; Fire Resistance; Damp & Weatherproofing; Sound Transmission & Insulation; and Energy Efficiency.
This design guide presents tables, charts and information necessary to design a Hebel PowerWall that complies with the Performance Requirements of the BCA. The designer must check the adequacy of the building solution for Performance Requirements outlined by the appropriate authority.
Fig. 4.1 Flow Chart for Design Process
