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From: tron@fluke.UUCP (Shoo Bop de Wap)
Newsgroups: net.travel,net.auto
Subject: Re: Road sign query
Message-ID: <722@vax1.fluke.UUCP>
Date: Tue, 11-Sep-84 10:30:59 EDT
Article-I.D.: vax1.722
Posted: Tue Sep 11 10:30:59 1984
Date-Received: Fri, 14-Sep-84 07:17:17 EDT
References: <551@ihlts.UUCP>
Organization: The Hop
Lines: 6

7% grade = 7 feet of vertical displacement for every 100 feet of horizontal
displacement.  The pitch of your roof is stated in a similar manner, as in
a 3 to 4 pitch is 3 feet of vertical for 4 feet of hoizontal.

Peter