Pocketbook of Useful Formulæ and Memoranda
for Civil and Mechanical Engineers

262 Molesworth’s pocket-book J bichon of Knees and Bends. X'''\ BENO KNEB A - Angle of bend or knee with forward line of direction. V = Velocity of water in feet per second K = Radius of centre line of bend. v Z ^adiua. ofAore of IjiPe (or j diameter). P- — Coefficient for angles of knees. L = Coefficient for curvature of bends. H - Head of water in feet necessary to overcome the friction of the bend or knee or knees, H = -0155 V2 K angles-lalUe °f K iS “ foIlows for different K 20° •046 i 40° i 60° I 80° ’339 I «364 I -74 90° •98 100° 1-26 For bends, H = -0155 V2 (A jA \180 /’ Values of L with various ratios of the radius of bend to radius of bore