Gutter Roof Design

Once an architect has determined the kind of roof he intends to use he must give equal attention to the design of the roof drainage system.

Gutter roof design.

Style of gutters to be used. 5 inch 5 520 square feet. Choose the 10 year frequency 5 minute rainfall see chart 1. Most times these style gutters are installed with rectangular downspouts.

This gutter section will match all standard 4 in. K style gutters are the most common option and they provide optimum drainage for the majority of homes in most of the u s. Add one foot to the measurement for every turn in the gutter. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.

Design guide md 1 roof gutter d esign method nrcs engineering maryland october 2004 page 4 roof gutter design instructions 1. If a roof s various drainage areas call for different size gutters go for the biggest one k style. The traditional k style gutter profile adds a functional yet decorative touch to your roofline. Maximum length of gutter.

Mark these on the design with an x these are almost always corners where the gutter can t continue since the roof isn t sloping down once you round the corner. All gutters are not effective for their full depth and width 4. They come in 5 inch to 6 inch widths. Suitable for flattish roofs with little or no vertical faces or steep roofs draining to one side of box gutter only or any roof if you are in a hurry and make the necessary allowances for all catchments.

A k style gutter in the same inch width can handle twice as much water as a half round gutter. Features a curved profile that is held in by tension which makes it easy to snap in and snap out. Slope of the roof. Label roof or roof segments and calculate.

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. Constructed from aluminum mesh for long lasting rust resistance. Gutter sections are made from these 10 ft. Step 4 measure the distance in feet between two x marks where a gutter will be installed.

The e z gutter guards are designed to simply snap onto the existing gutter profile so no fasteners are required. Design of eaves gutters box gutters downpipes. The gutter must be of such a design and location that water from a steep pitched roof will not by its own velocity tend to overrun the front edge 3. Design of roof drainage systems roof drainage the roof is one of the most essential parts of a building as it protects occupants contents and interior of the structure from the elements.

For animal waste management use the 25 year frequency 5 minute rainfall. See table 10 7a for standard downspout sizes. Design of the mesh allows water to flow through while blocking debris. K style gutter systems so it is ideal for repairs replacement or as an addition to existing systems.

Record this on line 1 of worksheet 1. Gutter sections are made from 28 gauge galvalume steel.