WebUse 2×6 rafters if your roof will experience heavy snow or wind loads. SYP 2×6 rafters at 24” O.C. can span over 18’ for gable-roofed shed. An SPF rafter can span nearly 15’ at the same dimensions. Again, put them closer … WebSnow Provisions in ASCE 7-05. Loads. ... 2005 Span Tables for Joists and Rafters. 2012 Design Values for Joists and Rafters. ... Tutorial for Understanding Loads and Using Span Tables. Span Tables. 2009 CCWD. Codes. 2012 CCWD. Codes. 2015 …
Rafter Vs Joist - Diffzi
WebDec 15, 2011 · 2x6, 2x8, 2x10, 2x? depends on the span of the rafters, the c/c spacing of the rafters, the span capability of the decking, type of roofing material, and the calculated live … WebDec 19, 2024 · 4. Choose a load duration category – 100% for heavy snow, 115% for snow and 125% for non-snow. When in doubt, consult the local building department. 5. Scan across the Span row to find a joist size with sufficient Live and applicable Total load capacities. Both requirements must be satisfied. When no value is shown in a Live column, philconstruct pampanga
Rafter Length Calculator - spikevm.com
WebFor example, if a house has a 4:12 slope, the rafters are on 16-inch centers, the snow load is 30 per square foot (psf), and the roof span is 28 feet, you need eight 16d common nails (or 40d box nails) at each rafter-heel joint … WebThe reduced roof rafter span shall be taken as the larger of the distances from the roof rafter support brace to the ridge or to the heel measured horizontally. For the purpose of determining roof rafter sizes in Table R804.3.2.1(1), ultimate design wind speeds shall be converted to equivalent ground snow loads in accordance with Table R804.3.2 ... Web10 rows · These rafter spans are for #2 lumber, a ground snow load of 30 psf, the ceiling not attached to rafters, and a dead load of 10 psf. All other data can be found in the 2012 … philconstruct members