Three attached screencap pics show a.) part of the plan for a ranch-on-slab house, b.) a section through the area in question, and c.) a birds-eye view of the roofscape.
The puzzle is whether to stickframe it or truss it. Location is hill country, TX, with a ground snow load of 5 psf. It is a locale in which a whole lotta roofs get raftered with 2x6s and most all custom house builds get stickframed roofs.
As can be seen, the span for the structural ridges, and I say ridges because of the ceiling frame below roof, is a little over 32 feet.
Now, one who hates all things truss might agree to a compromise, that being a ridge member made by a truss plant, essentially a huge floor truss, if you will, a little over six feet deep x 32+ feet long. Such a member, whether one ply or two, we'll let the truss engineer decide, could then be the bearing for sticked rafters for both roof and ceiling.
As can be seen in the section, a single common truss would be quite long, and if this roof section were trussed, it might be wise to truss it from wall to wall only, have the truss built with the roof overhang on the L side only, and just a large stub heel on the right, with the remaining framing to the R being sticks.
What would you do, if you were the builder? A quick check for a ridge beam says that a 5.25" wide x 18" deep 2.0E Parallam MIGHT handle the top part.
This kitchen-greatroom space is the only part of the plan that deserves a look into the puzzle. The rest is straigtforward, and will be stickframed. Shorter spans, many more opportunities for posts.
The puzzle is whether to stickframe it or truss it. Location is hill country, TX, with a ground snow load of 5 psf. It is a locale in which a whole lotta roofs get raftered with 2x6s and most all custom house builds get stickframed roofs.
As can be seen, the span for the structural ridges, and I say ridges because of the ceiling frame below roof, is a little over 32 feet.
Now, one who hates all things truss might agree to a compromise, that being a ridge member made by a truss plant, essentially a huge floor truss, if you will, a little over six feet deep x 32+ feet long. Such a member, whether one ply or two, we'll let the truss engineer decide, could then be the bearing for sticked rafters for both roof and ceiling.
As can be seen in the section, a single common truss would be quite long, and if this roof section were trussed, it might be wise to truss it from wall to wall only, have the truss built with the roof overhang on the L side only, and just a large stub heel on the right, with the remaining framing to the R being sticks.
What would you do, if you were the builder? A quick check for a ridge beam says that a 5.25" wide x 18" deep 2.0E Parallam MIGHT handle the top part.
This kitchen-greatroom space is the only part of the plan that deserves a look into the puzzle. The rest is straigtforward, and will be stickframed. Shorter spans, many more opportunities for posts.
