The trusses should be a little longer than the exact width to allow for overhang and you will need sufficient trusses to mount across the length.
Roof stud spacing.
Where the roof span exceeds 32 feet the wall studs shall be increased to 2x6 or the studs shall be designed in accordance with accepted engineering practice.
The stud oc on center spacing.
To get a 2x4 to calc at 24 inch spacing it can.
A 2x4 stud with the same loading as above but spaced only at 16 inches does not calc.
A habitable attic assembly supported by 2x4 studs is limited to a roof span of 32 feet.
And the length of the wall.
Most roofs utilize 16 inch spacings for strength and rigidity.
The rafters are usually positioned directly above the wall studs.
Like wall studs and floor joists rafters and trusses are spaced every 16 or 24 inches from center to center.
Stockbyte stockbyte getty images when placing rafters for a tin roof also frequently referred to as corrugated metal or steel it is common to set the distance between rafters based on the size of the roofing panels.
Oc spacing means measuring the distance between the centers of two adjacent studs.
The regular oc stud spacing is 16 19 2 or 24 inches.
How to increase wind and weight load bearing of walls.
Although the standard spacing of roof trusses may be the same as that of rafters with 24 inch spacing being a common option the design of a truss may allow for the use of a lower grade of lumber than would be required for rafters with comparable spacing and span.
Shorten that stud to 8 feet long and it makes it but barely.
Use the tape measure to map the rough location of the next joist roughly 16 or 24 inches away from the first and tap the ceiling with your knuckles or sweep a stud finder over the area to.
Once you ve calculated the number of trusses you will need you should purchase the lumber.
Scan the same surface area a few times and make sure the tool consistently indicates the same stud finding results in the same location each time and also scan for other rafters that are equally spaced such as the standard 16 in.
Most are spaced between 18 26 inches apart.
Metal roofs and pole buildings.
While a 5 12 pitch roof is the standard if you are going to save money by spacing your studs at 24 inches a 7 12 roof pitch will fortify your walls to a greater extent than a 22 62 degree roof pitch.
Moreover if snow load is a concern where you live a 7 12 roof sheds snow better as well.
Rafter spacing depends on the roofing panel size.