Hydraulic Calculation
Rainwater intensity, Hazen-Williams pipe flow, throttle & orifice resistance, and indoor design second flow.
Ground & Roof Rainwater
Rainwater intensity (Suzhou / Shanghai) plus partially-full sewer velocity & capacity check.
Open calculator →Hazen-Williams Pipe Hydraulics
Flow velocity and head loss of plastic, copper and steel water pipes.
Open calculator →Throttle Pipe & Orifice Plate
Pressure loss of throttle pipes and pressure-reducing orifice plates.
Open calculator →Indoor Supply & Drainage
Design second flow for indoor water supply and drainage by GB 50015.
Open calculator →Shenzhen Rainstorm Intensity
Design storm intensity q = 167·A/(t+b)^n for the two Shenzhen piecewise intervals.
Open calculator →