2x4 Max Span Roof

2 are indicated below.

2x4 max span roof. Pitch this is the incline of the roof expressed as a fraction. 1 ft 0 3048 m. 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. Live load is weight of furniture wind snow and more.

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. 2 4 inch wood can even tip warp and twist when drying. Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no.

All floor joist tables start with 2x6 lumber. If you use awc calculator 2x4 can span 6 2 with l360 deflection for decks 40lb ll. An syp rafter can span 11. 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.

Shorten the span maybe to 5 and put them 12 oc or like mac said 4 16 oc. If you live in an area that requires a shed roof rafter to support a heavy load then an spf rafter can only span 7. Span calculator for wood joists and rafters also available for the android os. As mentioned above a 2 4 spf shed roof rafter can span 11.

Dead load weight of structure and fixed loads 15 lbs ft 2. I used your formula backwards to calculate the max psf of a ceiling with 2x4 ceiling joists spanning 12 and spaced 24 o c. Both of these are for light roof loads. 2x4f 2000psif 1100psie 1 8x10 2x6f 1750 psi f 950 psi f 1900 psi e 1 8x10.

How far can a 2 4 span. For example in the rafter span table below the highlighted cell in the 40 live load table indicates that 2 x 8 southern yellow pine joists that have a grade of 2 that are spaced 24 apart can have a maximum span of 10 feet 3 inches 10 3 if designing for a live load of 40 lbs ft 2. Maximum and use lumber properties as follows. Assuming the fb of hemfir is maxxed at 1275 psi and i came up with 12 737 psf.

I personally think it will be a bouncy floor. Also available for the android os. Trusses must be designed for any special loading such as.