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Standard Down Pipe Capacity

Standard Down Pipe Capacity

RoundSize (mm2)Rectangular/squareSize (mm2)
65mm3 318100 x 50 mm4 500
80mm5 027100 x 75 mm6 750
100mm7 854100 x 100 mm9 000
125mm12 272  
150mm17 671N.B. square and rectangular downpipe capacities have been depreciated by 10%)
Clause Number: 
F
#+standard-down-pipe-capacity