How To Use A Roofing Square Metric

Find the inch line on the roofing square and the get the number directly below.

How to use a roofing square metric. A carpenter s framing square includes some tables stamped right into the tool itself. Step 1 work out the ratio of the roof before you can use the roofing square you need to work out the ratio of the roof pitch. The chappell universal metric squareessentially takes the mystery out of the backing angle and puts it at hand and ready to use for any compound roof system with a pitch from 15 to 60. How to use a framing square and its etched on tables to figure out roof slope rafter lengths.

Using the aggregate area of these simple shapes can yield a more accurate roof area to be used with the roofing material calculator. The 10th and bottom line on the front side body of the square gives the backing angle directly in degrees. For example you may find a ratio which says 8 16. Multiply it by the total run of the common rafter.

In most american states it is standard to express the pitch of the roof as a ratio so you should be able to locate it on blueprints and plans. The most common roofing materials used in the united states include shingles membrane roofing and ceramic tile all of which have different life spans. A description of the quick square and pocket square and how they are used for rafter layout with illustrations and illustrated examples. More project and tips.

Use the second row of numbers on the roofing square to determine the length of the hip or valley rafters. This article explains how to make quick use of a framing square and its imprinted data to get some basic roof measurement data like roof pitch or slope rafter lengths and end cuts. If the inch line is 8 the number below it is 47 65 cm 18 76 inches. Framing square basics how to use one.