Table 1: Penstock components Abacus Pipes DN 1600 Number of elements Unit length Total length Thickness 12mm 2 3.26 6.52 1 2 2 1 11.46 11.46 118 13.46 1588.28 49 6.71 328.79 1 12.46 12.46 1 5.96 5.96 1 6.31 6.31 Sub-total 174 1971.78 Thickness 13mm 21 11.96 251.16 2 3.48 6.96 124 13.46 1669.04 7 6.71 46.97 1 12.96 12.96 2 10.99 21.98 1 11.37 11.37 1 4.32 4.32 2 5.96 11.92 1 5.16 5.16 Sub-total 162 2041.84 Thickness 14mm 3 13.46 40.38 71 11.96 849.16 195 6.71 1308.45 1 9.06 9.06 1 6.47 6.47 Sub-total 271 2213.52 Total 607 6217.14 Pipes DN 900 Number of elements unit length total length 45 12 540 3 11.2133 33.64 Total 48 573.64 Sundry items 1 entrance 4 Bifurcation 1 Trifurcation 1 Butterfly valve 1 By-pass 1 Dissipation 1 Discharge valve Flange Air carrying pipe