Every building department is different and no way of knowing what their requirements are. I was also reminding you to verify with the building department whether they would require a professional engineer's review of the use of a structural ridge beam. If your structural components were designed by a professional engineer you should be a-o-k. I was not telling you to relocate the gable endwall windows, I was merely reminding you of loads so that you could ensure the header was properly designed and supported. The original beam designer is aware of all the required loads including wind and seismic and how these loads are transferred to the foundation. It is the contractors desire to leave as much of the existing beam in place as possible due to its situation over HVAC, electrical, etc. The last 6 of the beam has been significantly deteriorated by water damage. Maybe they could design it using structural composite lumber (engineered wood) and could come in several plies that may be easier to lift into place and laminate together. I have an existing LVL 14'x3.5' with a span of 18. ![]() I agree that a 6"x14"x16' long beam would be heavy and surely fun to install. Your lumber yard may be able to provide an engineer's review and certification of the beam as a part of their sale, I'd ask them.Įxpressing your desire for a beam easier to install should be directed to the original beam designer. Unless California's building code is a lot different than most there are no span tables for LVL within them. You may want to inquire if your building department would need a professional engineer's review of your ridge beam and roof framing. I'd expect to see a rather large LVL (engineered beam) for the span and tributary loading. You'd have to size your jack and kings studs for these loads to prevent crushing on the sill plates as well as to handle any required wind or seismic loads. the header for this window must be sized to handle the imposed ridge load to limit deflection of the header and transferring the load to the frame of the windows which would not be a good thing. it appears your ridge beam would be posted down on your large window in the gable end. ![]() if from a lumber yard they should be able to size a ridge beam for you as I'm sure they are aware of your code required loads. The truss manufacturer typically provides installation and bracing drawings certified by a professional engineer, which are submitted to your building department as trusses fall outside of the prescriptive building codes.Īre you purchasing you lumber from a big box store or a lumber yard. Trusses typically require more man power to handle and install, but usually go up faster if you know what you're doing with them. you would have to call a truss manufacturer to obtain pricing to compare against stick built. House Loading: 0.75kN/m2 Dead Load + 1.5kN/m2 Imposed Load. Once these have been entered, the joists suitable for this application appear in the table below. they bear their weight on your exterior walls (15' side). This application will specify a list of acceptable JJI-Joists once you enter your support conditions, load case and clear span. ![]() Using roof trusses is certainly one way to go.
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