Factors to be considered in the design of roof drainage sys tems are the area to be drained size of gutters downspouts outlets slope of roof type of building and appearance.
Drainage gutter design.
For single lane roadways with curb and gutter flow spread width must leave at least one 8 ft lane free of water in each direction for design conditions.
Water pooling in a yard can kill grass attract mosquitoes and create mud patches.
Use this downspout extension to divert water away from the foundation or connect to drainage pipe and catch basin to control drainage.
A little water will fall off these edges but not enough.
I wanted a good way to get rainwater from the roof as far away from the house as possible.
The rain intensity according to table 1 2 rainfall data and drainage factors uses a 5 minute duration for a 10 year or 100 year storm thereby providing a worst case scenario for the downspout and gutter design.
Install a french drain one of the top yard drainage solutions to divert water away from problem areas.
Learn more how to storm water design for building sites.
The map needs to be as close to scale as possible.
Draw a map of your roof on a piece of paper.
The flexible design easily bends and holds its shape and can be extended from 25 in.
Cross off any edge that isn t at the bottom of a slope.
Roof area to be considered the design capacity for a roof drainage system depends on the quantity of water to be handled.
They also influence the use of gutters and downspouts roof drains and scuppers.
Before installing gutters rainwater from the roof fell to the ground and didn t flow anywhere before soaking in to the soil hence large spring rains lead to water in the basement.
Downpipe eaves gutter long straight eaves gutters box gutter to rain water head box gutter vertical faces box gutter side o flow box gutter vertical o flow storm water pipe size storm water network overland flow path spitter upstream end custom rain water head.
To the design of the roof drainage system.
Since the rain intensity data is constantly being updated by the national oceanic and atmospheric administration.
For multi lane roadways with curb and gutter flow spread width must never exceed the lane width adjacent to the gutter for design conditions.
How to design a gutter downspout system step 1.
They determine the roof area slope and rainfall intensity.