Browse Forums General Discussion Re: Guide To Standards and Tolerances 23Mar 17, 2014 9:31 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Guide To Standards and Tolerances 25Mar 18, 2014 4:52 am 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Guide To Standards and Tolerances 27Mar 18, 2014 9:15 am 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Guide To Standards and Tolerances 30Mar 18, 2014 2:39 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Guide To Standards and Tolerances 31Mar 18, 2014 3:14 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Guide To Standards and Tolerances 33Mar 18, 2014 7:10 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Guide To Standards and Tolerances 34Mar 18, 2014 10:19 pm Foremost Building Expert in Australia,assisting with building problems/disputes, building stage inspections,pre-contract review advice for peace of mind 200 blogs http://www.buildingexpert.net.au/blog Re: Guide To Standards and Tolerances 35Mar 18, 2014 10:54 pm 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Re: Guide To Standards and Tolerances 36Mar 19, 2014 6:27 am Foremost Building Expert in Australia,assisting with building problems/disputes, building stage inspections,pre-contract review advice for peace of mind 200 blogs http://www.buildingexpert.net.au/blog Re: Guide To Standards and Tolerances 37Mar 19, 2014 9:05 am That is correct. Of interest, a murky area is the BCA's 'performance requirement' (section 2 of the BCA). The NSW High Front Guttering Advisory Committee Report that was presented to Parliament about 3 years ago immediately comes to mind. This Committee was set up (with reluctance) following the fiasco where manufacturers were supplying high fronted guttering with a non compliant clip system that allowed the gutter to overflow back into the wall cavity. Huge numbers of houses were fitted with this system. I posted several news items about this earlier in the thread. The guttering clip system was not restricted to NSW. During the inquiry, several NSW Department of Fair Trading inspectors were instructed to randomly choose and inspect display homes for roof drainage compliance. Of the 35 display homes selected, 34 were found to be not compliant with AS/NZS 3500.3:2003 Stormwater Drainage. AS/NZS 3500.3:2003 is a BCA DTS referenced document. However, most of the houses were nevertheless found to be compliant with the BCA's 'Performance Requirement'! I quote from the inquiry report. EXECUTIVE SUMMARY - page 4. In undertaking the brief, the review focused primarily on compliance with BCA performance requirements (in Section 2 of the BCA) – being the only mandatory requirements in the BCA. For high fronted guttering the main requirement of interest is to keep water out of the building based on a 100 year Annual Recurrent Interval (ARI) rain event. Such performance requirements aim to be non-prescriptive – they tell designers and installers the outcome that must be achieved but avoid prescribing how to actually achieve it. Information and advice on options for achieving the performance requirements is reserved for the “Building Solutions” level of the BCA’s compliance hierarchy. This level contains a variety of Deemed to Satisfy solutions where individuals can choose which they prefer to use on a project by project basis. Such solutions include the BCA’s own “Acceptable Construction Practice” (in section 3 of the BCA) and Australian Standards AS3500.3/3500.5. These options provide a more prescriptive level of detail about how to construct guttering in a way that can meet BCA performance requirements. Operation Flow- A NSW Fair Trading Study of the Building Code of Compliance on Display Homes Pages 17-18. NSW Fair Trading Inspectors through Operation Flow appraised a range of display homes in mid-2010 throughout NSW (35 in total), concerning their compliance with BCA performance requirements and AS3500 requirements. The main focus was on the number of downpipes and for evidence of overflow measures. Visual inspections of eaves linings and, where it was possible, internal walls and ceilings were conducted for signs of damage through water ingress into the building as a result of overflow. NSW Fair Trading wrote to builders seeking advice on how they conformed to AS3500 requirements (Note: albeit that this is only one means of meeting BCA performance requirements). Not all had responded at the time of completing this report. Inspectors, through their calculations, advised of widespread under-design of downpipes to meet the AS3500 20 year ARI requirements in the homes appraised. For a small number of homes they also noted signs of water damage to eaves linings, but the causes were not precisely quantified. Inspectors advised that all homes except for one were not compliant with AS3500 in regard to the adequate provision of downpipes, but then made the additional observations that the majority were compliant with BCA performance requirements i.e. as a result of lack of evidence of water damage from gutter overflow. And further down page 18... The audit report also found that AS3500.3 provides more rather than less downpipes and guttering than the BCA’s own “Acceptable Construction Practice” for the 20 year ARI. It would seem that the latter, in general, provides a more lenient basis for meeting BCA performance requirements. http://www.fairtrading.nsw.gov.au/pdfs/ ... report.pdf 3in1 Supadiverta. Rainwater Harvesting Best Practice using syphonic drainage. Cleaner Neater Smarter Cheaper Supa Gutter Pumper. A low cost syphonic eaves gutter overflow solution. Building Standards; Getting It Right! Don't think they are designed for double brick. WA has a particular way of building and unfortunately that's the way a large amount of sills are finished. 3 6996 I believe this is correct. From the picture you can see the power was put in last so the electrician knew where the water was. Really it's a common sense issue more… 4 5145 2 8621 |