Re: Sizing downspout drainage

Messages and Online Forum Q&A

If you find the answer to this question useful, kindly CLICK TO PAY here.


	Knowledge
	BuildersTALK Building\|Dream Green Building How-To Books Links (Web) Newsletter Tech Notes Videos
	Software
	BeamChek Bidding CAD \| AutoCAD Estimating EZHomeBuild Home Design Landscaping Lighting Design PrioSoft Resi-Cost Structural
	Specialty Tools
	CrackMON Tools WatrLevel
	Support & Info
	About Us Advertise Contact Us FAQ Publish Services Support

Re: Sizing downspout drainage

From: info@builderswebsource.com
Category: Drainage/Waterproofing
Remote Name: 63.198.181.43
Date: 25 Feb 2002
Time: 02:04 AM

Comments

For most residential situations, 4" PVC is typically large enough to handle downspout runoff. Computations involve knowing the expected worst-case rainfall in inches per hour, then converting that to cubic inches per hour by knowing the roof surface area. The flow rate through the pipe will depend on the pitch and the rate at which water at the other end can drain or be pumped. Builders Websource

Article Tools


	BuildersTALK
	Ask an Expert Recent Questions Click to Pay
	Archives
	2006-2007 Oct-Dec 2002 Jul-Sep 2002 Jan-Jun 2002 Jul-Dec 2001 Jan-Jun 2001 1999-2000


About Us \| Advertise \| Newsletter \| Privacy Policy \| Terms of Use
Builders Websource® is a corporate member of ASTM International—a non-profit engineering body dedicated in part to the standardization of building materials specifications, products, systems, and test methods for improved health, safety, and reliability of residential and commercial structures. Copyright © 1999 - 2008 Builders Websource®, an InBuild™ company. All rights reserved.