patio roof maximum beam rafter spans pergola beam size for 10 12 14 15 rafter span tables patio cover plans build your patio framing the deck super roof rafter spacing and sizing rafter span tables u s sizing table lookup weyerhaeuser beam span calculator rafter spacing and sizing how far can a 2x6 span without support building a covered patio with a 30ft power beam anthony forest s co designing with roof rafter span tables pergola beam span 18 treated glulam beams designing with roof rafter span tables how far can a 2x6 span without support how far can a 2x4 span without support u s sizing table lookup weyerhaeuser rafter ties and shallow pitch roofs building a porch roof tips and photos framing the deck super what size ridge beam for 2 4 2 6 2 8 strategies for safe affordable decks calculate your roof truss calculate joist rafter and wood beam spans guide attach a patio roof to an glulam beams are there any perola beam and rafter deck joist spacing and span chart how far can a 2x8 span without support single span rafter 14 rafter span chapter 8 roof ceiling construction roof rafter spacing and sizing patio cover plans build your patio how to size roof rafters explained designing with roof rafter span tables strategies for safe affordable decks deck joist spacing and span chart floor joist count calculate rafter lengths for gable how to hang a porch swing corrugated metal roof calculate your roof truss