How to Cut Rafters with a Rafter Angle Square Determine the building’s width and length and the rafter span in order to evaluate how many rafters are needed. Then determine the pitch. Divide the rafter’s span by two to find the rafter’s run. As an example, a building that’s 24 ...
To determine the exact location and proper 90-degree angle for the corner posts in relation to the house wall, use a plumb bob on the wall to locate the first outside rafter. Two methods can be used to ensure a square construction. The first is to locate the corner post locations with...
The easiest way is to use a tool called apitch finderthat can be placed on top of the roof, on gable end soffit, or in the attic under a rafter to find the pitch. This is a special tool and can also be used to find level, plumb, or any angle in between.Another method is to ...
This cut allows the rafter to sit squarely on the top plate and when cut right gives a solid foundation for attaching the rafter to the wall. Step 1 - Layout of the Rafter At this phase of construction, a few things should already be determined. The rafter angle or pitch. The length ...
Overlap the ends slightly to provide part of the board to be cut off. Use a pencil to mark both inside edges where the frame crosses over the cross brace. This gives you the exact angle to cut your board to fit the frame. (Be sure to mark the piece on the wood that will be dis...
Determine where you wish to place the skylights. Look at the model you wish to install. Consider factors such as the maximum opening angle and the opening mechanism as well as size and tint. Look for skylights with a pre-soldered lip for ease of installation. You will need to design a...
Check the soil:What type of soil is on the property? Are there concrete slabs that you’ll be tying down onto? This is important data to learn, as it will help you determine the type of anchor you’ll need (or if you need anchors at all). ...
This formula helps you to determine the length of the lanyard that you need to secure yourself on a roof without hitting the ground in the event of a fall. The sum of the elements above should be shorter than the fall clearance. If it’s longer, you’ll need to get a shorter safety...
Step 5 - Make the Connection to the Main Roof Snap a chalk line from the point where the dormer ridge meets the main roof to the point where the top plate of the side wall meets the main roof to determine the location of the valley. Install a 2x8 flat board against the main roof ...