We covered all the basics for building your roof. Rip the ridge board to the correct width to meet the rafter widths Woodworking Plans Hidden Compartment Example at plaan ridge. To measure pitch, wood roof framing plan example position the hypotenuse of the square on the roof, running straight up the pitch. Degrees and rise are marked on a blade attached to the pivoting arm. Simple roofs, such as a shed or the common gable, are fairly woor to construct, even without plans, if you understand the basics and a little geometry.

The floor framing plan is basically a plan view showing the layout of the girders and joists. Figure shows the manner of presenting floor framing plans. The unbroken double-line symbol indicates joists. Joist symbols are drawn in the position they will occupy in the completed building. Double framing around openings and beneath bathroom fixtures is shown where used. Bridging is also shown by a double-line symbol that runs perpendicularly to the joist.

In the figure, the number of rows of cross bridging is controlled by the span of the joist; the rows should not be placed more than 7 or 8 ft apart. Hence, a ft span may need only one row of bridging, but a ft span needs two rows. Dimensions need not be given between joists. Such information is given along with notes. Lengths may not be indicated in framing plans; the overall building dimensions and the dimensions for each bay or distances between columns or posts provide such data.

Notes also identify floor openings, bridging , and girts or plates. Simple roofs, such as a shed or the common gable, are fairly easy to construct, even without plans, if you understand the basics and a little geometry.

Roofs are framed in five basic designs: shed, gable, hip, gambrel and mansard. The gable is the most common, and it can be complicated with multiple roof lines, including valleys and dormers. For a shed roof you only need to know the rise, span and line length. Span is the measurement across the building from outside supporting wall to outside supporting wall. Run is half the distance of the span.

Rise is the measurement from the centerline of the span to the top of the roof line. Line length is the measurement from the outside of Woodworking Plans Info Example the supporting wall line to the centerline of the roof at the top of the rise. The framing of a basic gable roof is based on a right-angle triangle, and the various roof framing components fit the triangle. The rise, or height of the roof at its peak, is the altitude of the triangle; the run, or half the building span, is the base of the triangle; and the line length, measurement from the roof peak to the building wall, is the hypotenuse.

You will also need to know the desired pitch of the roof. Pitch is the slope or angle from the wall plate to the roof ridge line. Pitch can vary a great deal, from a shallow slope up to a very steep pitch. Pitch also has its own denotation, determined by the rise in inches in 12 inches. Having the correct pitch is important. In many instances, a certain pitch may be necessary or even required by local codes. Pitch is determined by snow loads, other weather factors and the covering to be applied to the roof.

For those in the northern parts of the country, an 8 in 12 pitch, or more, is commonly used to keep excessive snow loads off the roof. Those in the southern climates may utilize lower pitches. For lower pitches, a built-up or continuous roll roofing must be applied to keep the roof waterproof. Pitch is the amount of angle or slope the roof has. A framing square is traditionally used for laying out the roof and determining pitch. Rafter Layout. After you determine the rise, span, run, line length and pitch, the next step is to lay out the rafters, or mark the cuts on a pattern rafter to create the roof.

We will show two methods of laying out rafters; one using a traditional framing 2-foot square, and the second using the new C. Hanson Pivot Square. The first step is to lay the square on the end of the rafter board and locate 8 inches on the tongue the rise , and 12 inches on the blade the unit of run.

Multiply this by the run of the building. You should make this first pattern rafter on the straightest board you can find. If there is any curve in the board, lay out the rafter so Wood Duck House Plans Instructions Example the crown is up or facing away from you. Experience has shown that the weight of the roof will gradually flatten this crown. If the crown were to be positioned down, the roof could eventually sag. Then lay out the rafter as shown on the next page. Rafter Layout with a Framing Square.

Continue moving down the rafter and marking plumb cuts, including any odd figures. Make a duplicate rafter from the pattern. Then lay the rafters out on a smooth, flat surface, with a 2-by between them at the ridge line.

Measure to make sure the rise, run and span are correct. You may wish to test these on the building before cutting the rest of the rafters. Pitch can be either shallow or steep, depending on the needs of the roof. For example, in areas of the country where snowfall is abundant, it makes sense to create a steeper pitch in order to make snow removal easier. If you are using the stick framing approach, you will now need to spend time measuring and cutting the rafters based on the calculations you just made.

There are several different methods for doing Wood Roof Framing Plan this, but by far, the most popular method uses the traditional framing square. Using the traditional framing square and the calculations from earlier, you can lay out the rafters appropriately. Each of these cuts determines how two different pieces of wood will interlock and fit together to form one sturdy frame.

As you can see, the initial plan for framing your roof needs to take into account several key variables, such as the shape of the roof and any relevant community building codes. You will then have to choose between two very different types of roof framing stick framing vs. The goal, of course, is for every part of your roof frame to fit together perfectly, such that you have the perfect support for your new roof.

Get my free guide We respect your privacy. Unsubscribe at any time.

Pocket Hole Jig With Clamp Year Soft Close Drawer Slides How Do They Work Java