Steel Roof Rafter Sizes

Clear spans up to 80 feet.

Steel roof rafter sizes.

Steel trusses come in three types. Whether you re building a new home or want to replace your existing roof there s no better option than steel. Pro rib premium pro rib pro snap and architectural premium pro rib next select from 25 solid colors or 5 architectural colors. 2018 by truss supply llc.

First choose from four different steel panels. 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. Crating and bundling for a box truck this is necessary when not shipping on a flatbed truck. For example a slope of 6 12 means for every 12 inches of horizontal distance the slope of the roof will rise 6 inches vertically.

Menards is your 1 source for all your steel roofing needs. As a general rule roofs that have a high human occupancy rate should be framed with rafters every 16 structures such as sheds or barns can be frames with rafters every 24 again make sure to consult local codes. Gable lean to and header. Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal.

Pitch slope the pitch or slope is the incline of the roof expressed as a fraction describing the rise over the run. See some projects blog. If your project had a rafter length of 8 or less a safe and strong method is to use 2x8 framed 16 on center. Bar joist are 24 00 per foot on sizes of 10 16 20 and 24 feet.

Alternatively design in a specific timber or steel material type. The run or the base number is 12 inches. Fasteners for asphalt shingles shall be galvanized steel stainless steel aluminum or copper roofing nails minimum 12 gage 0 105 inch 3 mm shank with a minimum 3 8 inch diameter 9 5 mm head complying with astm f1667 of a length to penetrate through the roofing materials and not less than 3 4 inch 19 1 mm into the roof sheathing. 30 feet is available for 27 00 per foot.

Our roof rafter calculator tools are handy for calculating the number of rafters needed rafter length calculator lineal feet of rafter board feed in ridge and sub facia and the total board feet in the roof. The rise will be the elevation change over the 12 inches. Get the strength of steel with the ease of building with wood. Pick list all suitable timber and steel sections to design across all timber and steel sections.

Design of single span rafters in roofs in houses office buidlings schools and other structures. Snoot truss click picture to view snoot truss.