9 Best Of How To Use Framing Square For Roof Pitch HD Image Size. Place the pivot point on the square against the bottom of the rafter and align the 90-degree angle side of the square with the pencil mark. This key is at the left end of the front of the framing square blade front.
Framing Square Basics - How to use oneMORE PROJECT AND TIPS. At FRAMING SQUARE DETERMINES ROOF SLOPE. Place the pivot point against the shingles.
Determine the roofs pitch.
Step 3 Note the number on the Common. This is useful because sometime you may need to cut a bevel with your circular saw that is not calibrated using roof pitch. Angle - The angle of a roof is the same as the roofs slope except instead of being represented as X12 it is represented in degrees. On both the long and short arms of the framing square are marked various framing tables giving rafter lengths roof slopes and the proper angle of cuts for various roofing connections such as a rafter end abutting the ridge board the birds mouth cut at the rafter segment that rests atop a wall plate hip and valley rafter cuts and other information.