Rain Gutter Design

Now improved with three more patents.

Rain gutter design. 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. The 5 inch option typically works for most residential homes but for steep sloped roofs 6 inches is preferred to accommodate the increased speed of the rain flow. Record this on line 1 of worksheet 1. Romans brought the earliest rain gutters to britan around 50 ad.

Design guide md 1 roof gutter d esign method nrcs engineering maryland october 2004 page 4 roof gutter design instructions 1. Later rain gutters were made of wood and lined with lead. Wooden gutters were featured on famous structures like the tower of london. While not a permanent solution the way that gutters and other options are this.

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. When done correctly grading can improve the appearance of a home without detracting from its beauty with items such as rain chains. 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. Its unique rainhandler gutters louver design allows leaves and debris to blow or wash away.

The right grading around your home is a great way to ensure that water drains away from your house instead of staying near the foundation where it can cause a lot of damage. The most common location for the downspouts is the corners of the house since it is easier to move the water away from the house there. Choose the 10 year frequency 5 minute rainfall see chart 1. You will need to have a downspout for every 20 feet of gutter and turns in the gutter add 1 foot to the total.

The standard is about inch per 10 feet. As with gutters a downspout s capacity must match or exceed the expected runoff. Since the rain intensity data is constantly being updated by the national oceanic and atmospheric administration noaa this. The technology was re introduced by the normans after an invasion in 1066.

Learn more how to storm water design for building sites. Increasing the pitch increases a gutter s handling capacity but the gutter may look askew over a long run. For animal waste management use the 25 year frequency 5 minute rainfall. Once an architect has.

Find a place to put the downspouts and mark their location with an o on the design. Label roof or roof segments and calculate. Usually your gutter contractor will decide between 5 inch gutters with 2 by 3 inch downspouts or 6 inch gutters with 3 by 4 inch downspouts. The downspout size must suit the bottom width of the gutter.

The above recommendations assume that you have properly sized downspouts every 40 feet.