b'The proposed fixings are the same as tested or larger/longer in size and fixed at least 200mm centres or closer. The increase in size and length of the fixing will add more stability to the panels and will not contribute to flaming or causes gaps to form. Similarly, the reduction of fixing centres than the tested 200mm will further reduce the possibility of gap formation and will not contribute to flaming either.Based on the above, it is expected that the proposed construction will not detrimentally affect the performance of the tested roof system when tested in accordance with AS 1530.8.1-2018. Variation of fixings for panel to frame, barge edges, top of the valley gutter steel skin to top of panel, ridge cap. The proposed construction includes variation of fixings for panel to frame, barge edges, top the valley gutter steel skin to top of panel, ridge cap as follows: The fixing shall be the tested TEK 14g x 175mm Hex screws with cyclone clips, or larger/longer in size. The fixing shall be at least 200mm centres or closer. With reference to FSZ 2411, the DeltaTrim-TPC panels were fixed to the steel frame using TEK 14 x 175mm Hex screws and cyclone clips and the left and right barge edges of the roof were fitted with x 0.6-mm thick roll formed profiled steel skin DeltaTrim 100-mm side barge trims (TPC-R006 and TPC-006-RH) fixed with TEK 14 x 175 Hex screws at 200-mm centres. The fixings and the clips held in place the panels to frame, barge edges and top of the valley gutter steel skin to top of panel, and ridge cap during the test preventing potential gap formation.The proposed fixings are the same as tested with cyclone clips, or larger/longer in size and fixed at least 200mm centres or closer. The increase in size and length of the fixing will add more stability to the components fixed together using the proposed fixings and will not contribute to flaming or causes gaps to form. Similarly, the reduction of fixing centres than the tested 200mm will further reduce the possibility of gap formation and will not contribute to flaming either.Based on the above, it is expected that the proposed construction will not detrimentally affect the performance of the tested roof system when tested in accordance with AS 1530.8.1-2018. Variation of fixings for bottom of valley gutter steel skin to bottom of panel The proposed construction includes variation of fixings for bottom of valley gutter steel skin to bottom of panel as follows: The fixing shall be the tested stainless-steel rivet, or larger/longer in size. The fixing shall be at least 200mm centres or closer.With reference to FSZ 2411, a 230-mm wide x 0.6-mm thick roll formed steel skin Valley gutter flashing (TPC-R010) on the underside was fixed with stainless steel rivets at 200-mm centres. The fixings held the valley gutter skin and the bottom of panel together preventing gap formation during the test.The proposed fixings are the same as tested or larger/longer in size and fixed at least 200mm centres or closer. The increase in size and length of the fixing will add more stability and will not contribute to flaming or causes gaps to form. Similarly, the reduction of fixing centres than the tested 200mm will further reduce the possibility of gap formation and will not contribute to flaming either.Based on the above, it is expected that the proposed construction will not detrimentally affect the performance of the tested roof system when tested in accordance with AS 1530.8.1-2018.FCO-3545 Page 14 of 16 Copyright CSIRO 2024 This report may only be reproduced in full. Alteration of this report without written authorisation from CSIRO is forbidden.'