For steel, cast iron, non-ferrous, plastic, asbestos, cement, concrete, vitrified and coated pipes, also open channels in earth, rock, concrete, metal and wood.
PIPES, DUCTS OR CIRCULAR SECTON
One side of the calculator solves the rational formula for water flow in pipes and ducts of circular section. The answers have been checked against a large number of well authenticated practical tests on actual pipelines from small metal tubes to long concrete tunnels up to 6 metres dia. and give accuracy appreciably better than the usual Hazen Williams formula.
Flow 0,1 l/s to 100 m3/s Diameter 16 to 6.300 mm
The reverse side solves the Manning formula for the flow in open channels.
Flow 15 l/s to 1.500 m3/s
Channel Area 0,07 to 200 m2
Imperial, Metric or U.S.
Two sided, 3 colour
Velocity scales have been added to both sides of the calculator.
Complete in case with full instructions