Residential Framing Plans

[TimmyH76]

What level of detail do other structural engineers show for the roof framing plans for homes that could be stick built using prescriptive design. I'm talking about high end homes, with cut up roof lines and such. Not really any large spans or cantilevers. We are located in a 90 mph wind zone and minimal seismic loading.

 

[DonPhillips]

I typically show the member sizes, spacings, and grade. As long as the members meet the prescriptive portion of the code, I seldom get into connections since these are prescriptive also. If I deviate from code, like for an LVL or specifying something not in the tables, I look at the connections and select something from Simpson. I typically am thinking of what the building inspector may need in the field to prevent me having to fax a sketch to a plans exmainer and delay the permit or to a building inspector and delay the framing inspection.

Don Phillips

http://worthingtonengineering.com

 

[wikidcool]

I've only done a couple (most of our buildings are wood truss and/or higher snow loads that require engineered roofs), but I've had success with copying the purlin bracing language from the code onto the plans, specifying the rafter size, grade, spacing and max span, and letting the contractor work out the details. Still a good idea though to look through the plans and make sure you've provided bearing walls, etc. in areas where they will be needed, even if you don't detail out the entire roof support structure.

 

[archeng59]

I'm like Don, I show as much as I believe will help the contractor frame it and allow someone to inspect the framing without a lot of "come over and look at this to see if it's ok." I show a plan with member sizes and spacing; general notes with species and grades of material; for engineered wood lumber or fabricated trusses, I will put the specs for that in the general notes; I provide as many connection details as I believe are needed for rafters and trusses bearing on walls, rafter-to-rafter, beam-to-beam connections so I can specify the Simpson-type connectors.