Cvl,
With the older roof top solar water heaters, there was a much larger dead load imposed in a small concentrated area. If these are the systems you’re using then you should be getting engineering. Typically, these units are only affecting one truss type and the cost on this form of service...
What I mean is that 2005 NDS allows the CD (duration of load) to bending, tension and compression checks by 1.25 (7 day) for live construction verse the 1.0 (10 years) for dead loads. So therefore the allowable bending, tension or compression is higher when evaluating a 7 day load (short term)...
dbruehl,
California adopted the 2007 CBC, which is based on the 2006 International Building Code (IBC) with ammendments, the specific reference to modifications is as follows:
IBC 2006 2303.4.1.7 – Alterations to trusses. Truss members and components shall not be notched, drilled, spliced or...
kslee1000:
It's not about how you feel, it's about the laws that have been made based on past experiences. I’m not concerned with how courageous you are as a risk taker, I’m concerned about being a professional and providing a service that should be mandated as necessary. Read the code...
kslee1000:
With that being said, I should be allowed to build my own home, with my own money, no permits, no engineering that I could sell to someone else later on down the road?
How would it make you feel knowing that your 2 year old daughter could be sleeping in a room, under a roof that...
Let's be clear about this, the materials & labor to apply such a system alone would cost more than the $600.00 we charge for a (typical) residential review. The design and profit should be double of your cost. Every house is unique and under different conditions. Take for instance, a 2 story...
This is the strongest argument that has been brought up and could be valid as long as it’s construction live load. It still doesn’t mean that the members below would perform successfully. Once you move into elevations where snow is figured, the snow live load couldn’t be substituted for dead...
That’s assuming asphalt shingles exist & multiple layers have been applied. I have seen some remove the tile and lay shingles for those locations where the solar is being located. This proves to be a much better application however, the questions remains. Who is responsible?
If framing...
That's true they don’t weight much PSF. The problem is that the installers are having to be more and more competitive and pushing the capacity of the railing system w/ as few roof penetrations as possible. In some cases the clearspan is 6' wide and 5' deep with connections (depending on the...
This is a retro fit application. The truss, joist, rafter, beams etc. have to be reverse engineered. We do stamp the engineering & cover letter, same as a tenant improvement.
Regards,
Ray
Please read this quote...
“Peoria now, for example, is requiring a structural analysis by an engineer on all homes that put solar on. That’s a deal killer. If you find an engineer who is cheap, you may get by with $600, more likely $1,000, for every system. In a sense, Peoria is saying they...
