Also allows for the runoff from any vertical. Many years ago the csiro derived formulas for roof gutter design. So, if the gutter was flowing full at q20, it will.
A free online calculator for calculating the size and dimensions of a box gutter with a sump not at the end, and with a vertical overflow from the sump. Especially suited to straight gutters with no bends. A free online calculator for calculating the size and dimensions of a box gutter with an outlet at one end and allowing for vertical faces discharging onto the associated roof.
A free online calculator for calculating the size and dimensions of a box gutter with a sump not at the end, and with a side overflow from the sump. Calculate rectangular dp's, custom rain water heads, and any size eaves or box gutter. Simplified box gutter sizing free online calculator, suitable for a rainwater head at one end The program will calculate the size and number of downpipes (downspouts, leaders) required, and the eaves gutter sizes for any roof.
An alternative method for the design and sizing of eaves gutters and downpipes. Calculators for designing eaves gutters, box gutters, downpipes, pipes and open channels etc to australian standards. Calculate flows, gutters, and downpipes well outside of the limits of the code. You can choose a downpipe size and calculate the number.