2x4 Span For Roof

Also available for the android os.

2x4 span for roof. Dead load weight of structure and fixed loads 15 lbs ft 2. 1 psf lb f ft 2 47 88 n m 2. Allowable spans for 2x4 top chord trusses using sheathing other than plywood e g. My question is can i use 2 x 4 on edge spaced.

That is exactly what i have double trusses on each side of a post on 12 centers. Somehow i am in a traditionalist camp 16 oc for a 12 foot wall will add only 6 extra 2x4 s or 3 extra if you buy 10 foot lengths for the rafters and 6 extra 2x4 s for studs if you use only a single layer top plate on the bearing walls. 2 are indicated below. At the pitch range you are looking at the 2x4 is just fine up to 8 6 depending on the lumber grade.

1 ft 0 3048 m. Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no. Span calculator for wood joists and rafters also available for the android os. Hi i saw on your webpage the pole barn guru stated the trusses could be spaced 12 apart i called and was told it is a double truss one on each side of a post that is on 12 centers.

Live load is weight of furniture wind snow and more. For heavy loads 2x4s can span up to 5. Spaced sheathing or 1x boards may be reduced slightly. Visit the roof framing page for more information on cutting roof rafters and visit the roof pitch calculator for determining rafter lengths based on rise and run.

Most roof framing is 24 on center and you can still build sheds up to 14 with 2 4 rafters at 24 on center. But again if you are going to experience heavy loads it just makes sense to err on the side of caution and use 2 6 rafters. Can 2 4 roof purlins span 12 feet. Reader dave in michigan writes.

While every effort has been made to insure the accuracy of the information presented and special effort has been made to assure that the information reflects the state of the art neither the west coast lumber inspection bureau the american wood council nor its members assume any responsibility for any particular design prepared from this online span calculator. Pitch this is the incline of the roof expressed as a fraction. While pitch and slope are used interchangeably they are not the same span also known as gable width this is based on the total footprint of the house and refers to the distance between two exterior walls. Irregardless of the roof material maximum allowable span for 2x4 s is 10.

And the less slope there is the sooner it will collapse. Max span of 2x6 s is 20.