How To Read Roof Framing Plans

Transfers the loadof the roof through the raftersto walls below.

How to read roof framing plans. Learning how to read construction plans is an essential skill for building a career as a construction worker. Notice the bold dotted line this dotted line separates the main roof from the gable pop out on the front of house. Ridge horizontal ridge length hip valley rafters have a different factor. Ridge beam sits below the rafters.

And the line length measurement from the roof peak to the building wall is the hypotenuse. On the body of the square the longer side input the 12 and input the 7 on the tongue the shorter side of the square by lining up the stair gauges at the corresponding point on the square. The easiest and most accurate method to measuring a roof plan is to square everything off. Input the pitch of the roof that you calculated above we ll use 7 12 for reference throughout on the framing square.

With this method only 2 calculations are needed. In this mini series we re going to cover construction blueprints from start to finish. Supported by lally columns. Then use the info in the index to help you examine the floor plans and other drawings.

One of the most important parts of building a sturdy roof is the initial roof framing plan. Ridge board ridge beam. The point at which all the raftersare attached to. Showing you guys everything you need to know along the way.

Typical roof pitches are 6 12 12 12 in pitch and are called out on every elevation of the house corresponding to the pitch on the roof plan. Construction drawings vary from simple to very complex so understanding how to interpret the drawings is crucial for completing the project efficiently and accurately. Either way knowing how to read construction plans is a critical skill. The rise or height of the roof at its peak is the altitude of the triangle.

Calculate the ratio of the rafters horizontal run to its slope length. Parts of a roof. Elevation markers elevations markers are dashed lines that show where the floor and plate the top of the framed wall lines of each level correspond to the elevation. The roof plan shows the rafter direction and spacing but not the rafter length.

Roof framing simply describes how a group of rafters and beams are fitted or joined together in order to provide support for the roof covering. The run or half the building span is the base of the triangle. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. Ridge board v s beam.

A ridge board is a horizontal member of the roof frame. This means that you want to divide the roof into sections.