its a basic patio cover 18X25 the outter corners are supported by 8X8 posts and inner corners sit on the wall plate 2x4's.
tx....rafters are 14.5'
rafters sit on the 4x12x18 witha 14' 6" span and form a vaulted ceiling with a 4/12 pitch
sorry not 14'6" span thats length from beam to ridge.
tie into hip roof but new structure is a gable
ridge beam and rafter support beams are all 4x12x18 DF. There are 2 corner supports 8x8 holding the outter ends of the 18' and 25' beams. There is a center support ground to 25 beam 8x8 then a 4x4 fromt top 25' beam to ridge beam...open gable
i have cedar already designed and spanning further than that...how is the distancd shorter for DF than cedar? fir is stronger
i hope so I hade an archetectural firm desing my home
ok I am not real good on the span charts but I thought it was 15+ feet for 2x12
whats the 12.5' trib? sorry like i said Im not the great on those charts or terminomlogy
so the max span for the ridge is 9'? my design is nearly double....failure?
how are these long spans being made in the new home designs using the popular rough cut lumber? I know I see them without engineered beams