Framing a shed roof is similar to framing a wall.
Wall to roof framing.
This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams.
If you know the slope x in 12 you want to use for your roof framing design you can use it along with the run r to determine the height of the ridge beam for example if the slope is 4 in 12 and the run is 12 feet the ridge beam height m will be 4 feet.
Framing materials are usually wood engineered wood or structural steel the alternative to framed construction is generally called mass wall construction where horizontal layers of stacked materials such as log building masonry rammed earth adobe etc.
Sheathing comes in 4 8 sheets and dimension lumber in multiples of 2 feet.
However before concentrating on roof framing a brief discussion of diaphragms and shear walls is presented because they are two of the key elements in the framing of load bearing wall systems in most residential and light commercial construction.
Framing in construction is the fitting together of pieces to give a structure support and shape.
The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle.
Keep it simple and remember.
While most home builders will outsource the construction of roofing trusses the rafter supports of the roof itself learning to frame a roof yourself is one of the true arts of carpentry and a basic primer is covered below.
Building framing begins with the roof framing structure.
The run or half the building span is the base of the triangle.
Follow accepted building techniques when framing a wall.
Determining the ridge beam height.
Are used without framing.
Stick to the basics of simplified design and use dimensions that don t generate waste.
The rise or height of the roof at its peak is the altitude of the triangle.
Follow these guidelines and techniques to make the job go smoothly.
Walls define features in homes and businesses dividing rooms and creating halls and walkways.
Some of these can support the roof and prevent ridge sagging and wall spreading.
The fascia board is the bottom plate and the ridge board the top plate.
The finished ridge beam height z above the top of the wall will be m plus the y height.
And the line length measurement from the roof peak to the building wall is the hypotenuse.
To frame a wall you must choose the wall s location build the wall flat on the floor and then tilt it into place.
We go over the stu.
If you have some basic knowledge of carpentry tools you can frame a wall.
From bottom plates to top plates crowning studs and blocking for added rigidity.
Use this guide to learn how to frame a wall step by step.
Collar ties rafter ties tension beams structural ridge beams.
