There are 2 ways to calculate jack rafter lengths. Whether you pull from the king common or the corner, the Construction Master Pro makes these calcuations quick and easy. The Construction Master defaults to pulling from the king common. If you want to pull from the corner, here's how you change the settings to work for you: 1️⃣ Push CONV then STOR. Keep pushing STOR until Jack appears 2️⃣ Push the key to switch to ascend. Now you're all set for ascending Jack lengths, and your first Jack rafter

A lot of framers make the plumb cut through 1/3 of the rafter leaving 2/3 on top. Here's how to figure out the length of that 2/3 (the height above plate) while factoring in the pitch of the rafter. 1️⃣ Enter the pitch, like 8, INCH, PITCH. 2️⃣ Enter the width of the rafter and push RUN. 3️⃣ Push DIAG and multiply that value by 2 and divide by 3. | Calculated Industries

Roof Pitch Rafter Length: Simplified

Quick tutorial on using the Construction Master to calculate the exact rafter length. . . .. #framersareadyingbreed #roofframing #geometry #framer #framerlife #framing #mathneverlies #layitoutbuilditup #Carpenter #carpentry #squaresnapbuildrepeat #finishframing #frametheworld #construction #craftsman #framersofig #framersofinstagram #carpenterlife | awesomeframers

Gambrel roof calculator: calculate truss, rafter, tile, metal, slate, square | JustCalc.com

ROOF RAFTER CALCULATOR - Myrooff.com

Rafter Calculator » Length Calculator

Roof Pitch Calculator - Myrooff.com