Elements and Performance Criteria
- Assess plans and specifications for size, span and spacing of structural members required in ceiling and roof framing
- Access is obtained to all relevant plans, specifications and documentation
- Specified timber species and stress grading is identified
- True length of common rafter and overhand and economical size of common rafter is determined to support specified roof structure and covering
- Maximum span of common rafter is determined
- Position, location and direction of struts and strutting beams to support roof and ceiling loads are determined and documented
- Method of support at hip and valley rafters is determined and documented
- Location, direction and span of ceiling joists and hanging beams to support specified roof design is determined and documented
- Nominated member sizes, spans, spacings and locations are listed, documented and checked for accuracy against plans and specifications
- Assess plans and specifications for permanent wind bracing requirements for nominated design gust wind speeds
- Access is obtained to all relevant plans, specifications and documentation
- Location and category of building site is identified against design gust wind speed calculations
- Wind directions are selected and noted on plans
- Type and number of bracing units for each wind direction is selected
- Bracing details and description is documented based upon calculations
- Assess plans and specifications for size, span and spacings of structural members for timber wall frames/s
- Access is obtained to all relevant plans, specifications and documentation
- Specified timber species and stress grading is identified
- 'Roof load width' for walls supporting ceiling and roof structures for a specified roof covering is determined
- Economical size for common wall studs is determined
- Size of top and bottom wall plates is determined according to load bearing conditions
- Size of studs at side window and door opening is determined
- Size of lintels to nominated openings is determined
- Size of timber posts and beams supporting over hands is determined
- Nominated member sizes, spans, spacings and locations are identified, listed, documented and checked against plans and specifications for accuracy
- Assess plans and specifications for size, span and spacing of structural members for timber stumps, floor bearers and joists
- Access is obtained to all relevant plans, specifications and documentation
- Specified timber species and stress grading is identified
- Economical size for floor bearer and joist to suit maximum spans and spacings is determined
- Size of timber stumps and footing type and size required to support structural members is determined
- Size for timber trimmers, working and trimming joists for stair opening to suit maximum spans and spacings is determined
- Location, direction and span of bearers and joists to support specified structure is determined
- Nominated member sizes, spans, spacings, direction and bracings are identified, listed, documented and checked for accuracy against plans and specifications