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About GSR

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  1. Habitable space with natural lighting and ventilation requires 8% of the floor area be windows and 4% be openable. How is the floor area defined in the following cases. 1. A habitable attic. Is it the area with 7 ft or greater headroom? 5 ft or greater headroom? Or the full area including out to where the rafters meet the floor? 2. A second story room that has an opening to the floor below. Is it the perimeter floor area around the opening? Or the full area as if the opening was not present? (For example, a 16 X 28 ft room with a 8 X 20 opening to the room below, and a 4 ft wi
  2. They only take questions one hour early in the morning. So far no luck ever getting through. The local office is only open two afternoons a week to accept plans.
  3. I have read a lot about the new requirement for solar on new construction in California in 2020, but can't seem to find a clear unambiguous description of what capacity system is required, even on California government sites. Does someone know what the requirement really is. I know what solar companies say I should need, and I know what I really need, but what will California say I need for a new system when I try an pull a permit? I am trying to spec out a system for a 6,000 square foot house (two floors, excluding basement and attic) in the mountains of southern California. My cu
  4. Thanks for the feedback. My take away so far is that a ridge board with rafter ties just won't work for my design goal. Most truss designs just don't give the floor area with 7 ft headroom needed. The only truss type I can find with no bottom chord that might work is a parallel chord truss. I recognize that eventually I have to get with a structural engineer, but before that I would like to know I have a design concept that will work. Then the engineer can work out the details to keep the building dept. happy. A huge self supported ridge girder remains an option, and provides the
  5. The thing about trusses, even those without the bottom cord, is that they do not allow the required headroom over a useful area without having a very steep roof. With scissor trusses, I think I would end up with a 15 in 12 roof, and then with only a five foot wide floor area with 7 ft headroom. That would also put me above the building height restrictions in my area by four feet. To stay within height restrictions I would be limited to 11 in 12, and end up with no floor area with 7 ft headroom. Just as an aside - the requirements for snow load are way beyond anything I have ever seen l
  6. This question mainly concerns rafter ties on a new construction design for a 9 in 12 roof, 60 psf snow load requirement. The footprint of the house is roughly 100 X 33, slightly less wide in the middle half. The goal is a habitable attic space with minimum obstructions and maximum usable area. There are interior bearing walls along the short dimension of the house every 16 to 24 feet the length of the house (a total of four plus the end walls). The ceiling joists for the floor below will be 2 X 12 parallel to the long ridge line. Plan has three cross gables on the front side of the long r
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