Roof Gutter Downspout Design

Jan 20 2015 explore angelica muhi jarabe s board gutter design on pinterest.

Roof gutter downspout design.

Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. For practical purposes the roof gutter depths and areas used are assumed to hold true for all available gutter of a given style top width and material even though differences do occur. See more ideas about downspout gutter gutters. There are two major factors to consider when deciding a gutter design.

The design roof area is divided by the area of roof shown in table 10a column a2 or b2 see discussion above to give the minimum required area for each downspout. Find a place to put the downspouts and mark their location with an o on the design. You will need to have a downspout for every 20 feet of gutter and turns in the gutter add 1 foot to the total. 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.

Downspouts should have a cross sectional area of at least 7 square inches except for small areas such as porches and canopies. Look through downspout photos in different colors and styles and when you find some downspout that inspires you save it to. Come visit our selection of quality products. To the design of the roof drainage system.

This wizard makes it easy to calculate the roof design area by providing various shape calculations and the calculation for vertical walls area per international plumbing code ipc. 6 inch 7 960 square feet. 5 inch 5 520 square feet. Roof area to be considered the design capacity for a roof drainage system depends on the quantity of water to be handled.

The first is to make it wide and deep enough to collect all of the rainwater during the hardest rainfall. Capacities of the roof gutter and downspouts shown in this design guide are based on actual measurements taken from some of the materials available. Then use the information below to see what size gutter you need. Their size should be constant throughout their length.

If a roof s various drainage areas call for different size gutters go for the biggest one k style. This spread sheet will help you calculate the gutter width and maximum distance between downspouts based on your maximum rainfall roof area and style of gutter. Browse 211 downspout on houzz whether you want inspiration for planning downspout or are building designer downspout from scratch houzz has 211 pictures from the best designers decorators and architects in the country including heartwood builders and grouparchitect.