D flow depth at curb.
Gutter flow width.
It s the most common reason for overflowing gutters.
Where q gutter flow rate n manning s coefficient s x roadway cross slope s longitudinal slope t flow width.
I denotes rainfall intensity the roof area in square feet sq m.
Half round gutter sizing is based on w 0 0182 la 2 5.
Then use the chart below to see what size gutter you need.
6 inch 7 960 square feet.
5 inch 5 520 square feet.
Curb type gutter calculator solving for flow rate given roadway cross slope longitudinal slope flow width and manning s coefficient.
Leaves shingle granules sticks from broken tree limbs even plastic bags all of them frequently find their way into your gutters.
Gutter flow the ponded width is a geometric function of the depth of the water y in the curb and gutter section.
T flow width.
The spread is usually referred to as ponded width t as shown in figure 10 10.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.
Curb gutter flow rate.
Then use the information below to see what size gutter you need.
If a roof s various drainage areas call for different size gutters go for the biggest one k style.
6 inch 7 960 square feet.
If a roof s various drainage areas call for different size gutters go for the biggest one k style.
Debris clogging up the gutter and or downspout flow.
N manning s coefficient.
S longitudinal slope.
S x roadway cross slope.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.
A depressing depth.