b'Association of Hydraulic Services Consultants AustraliaResearch Foundation 1.Purpose The purpose of this report was to determine the roof drainage capacities of two different Delta Panels Roof Sheeting profiles (DeltaOrb and DeltaTrim) according to calculation procedures outlined in Section 3.3 of AS1562.1:2018Design and Installation of sheet roof and wall cladding.2.Methods Calculation procedures outlined in Section 3.3 of AS1562.1:2018 were followed to determine the drainage capacities of the two Delta Panels Roof Sheeting profiles. These procedures are: 3.3.1 General: The cladding system shall provide water resistance and drainage when subjected to a rainfall resulting from a storm having an average recurrence interval of 100 years as determined by AS3500.3 (i.e. 100year, 5-minute duration storm).3.3.2 Roof Pitch Minimum roof pitch shall be the greater of: a)The value given in Table 3.1: and b)The value calculated in accordance with Appendix D (see appendix).The drainage capacity calculation results presented in this report were obtained using the procedures outlined in Appendix D of AS1562.1:2018. Maximum allowable roof lengths* for the 100 year, 5-minute storm rainfall intensities are presented for roof pitch values equal to and greater than the minimum values given in Table 3.1.*The designer and installer must provide allowances for thermal expansion according to AS1562.1:2018 and other relevant design codes. Page 3 of 10'