The Director(s) of Metropolis Solutions have been driven to innovate in the area of compliant options for low pitch metal roof box gutter products. Together with a team of highly reputable engineers, the Dam Buster roof drainage system provides cost effective and aesthetically pleasing compliant solutions for low pitch metal roof box gutters.
This small document is extremely powerful and provides consumer protection for both plumber’s and property owner’s if it is correctly understood. In our experience, construction lawyers who have a good understanding of this document are few and far between.
Very significant requirements exist for Plumbing Performance Solutions. Don’t be short changed. This 2019 VBA guide is very informative and also largely mirrors the requirements of the National Construction Code.
Some consultants have been using tank overflow formulas from AS3500.1 to design box gutter systems under AS3500.3. There are critical differences between both situations. This discussion paper by Associate Professor Terry Lucke of the AHSCA Research Foundation examines this situation and finds the practice unacceptable.
It appears that there may be different interpretations of requirements for minimum allowable box gutter depths and minimum allowable flowrates for the design of box gutters using the three different general design methods recommended in AS/NZS3500.3:2018. This discussion paper by Associate Professor Terry Lucke of the AHSCA Research Foundation examines these requirements in more detail to clarify their correct usage.