Need a book? Engineering books recommendations...
[SEAOC] Roof Truss shop drawings[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaoc(--nospam--at)power.net
- Subject: [SEAOC] Roof Truss shop drawings
- From: HARRISENGR(--nospam--at)aol.com
- Date: Fri, 2 Aug 1996 23:33:24 -0400
I would value other opinions on the review of residential roof truss shop drawings by the engineer of record. Typically , these include a truss layout prepared by the truss companies sales rep, and referenced truss calc's by their engineer consultant. The consultant typically does not see the building plans but is given the spans and loads by the truss co. rep.. The layout is not signed but the calc's are. At one time i thought the engineer of record was reviewing the truss calcs to verify they used the right loading , span , bearing points , etc. Now i am told by the truss engineer he is only responsible for the actual truss component and not the layout plan. The engineer of record is responsible for the layout plan by the truss co. sales rep.? So , if the layout plan by the non-engineer truss co rep calls for a single ply girder while the stamped calc's in the back say double ply girder, the engineer of record and not the truss engineer is responsible? The case that brought this up i was performing structural observation when i noticed the trusses spanned a different direction than the plan. The contractor said they had wanted a hip roof instead of a gable so they had the truss co rep change the layout plan. The truss co rep said he has no control on what the owner does with his plan/truss but assumes it is run by the engineer of record. It was not, even though the plans spec engineer of record and building dept approval prior to fab.This overstressed the second floor beams and foundation at the revised girder truss locations. Fortunately it was caught in time and will be fixed. I want to require the truss engineer to stamp/sign the truss layout plan prepared by the truss co rep but he says this is not done just as other types of shop drawings are not stamped and signed . It seems to me if the truss engineer was more involved with the plan there would be fewer misunderstandings. It seems an unlicensed sales rep with unknown credentials and experience is making too many decisions. I would appreciate your comments and experiences in this area. Tom Harris , SE Thousand Oaks, CA ...
- Prev by Subject: [SEAOC] Rigid frame with masonry walls
- Next by Subject: [SEAOC] Rw factors
- Previous by thread: [SEAOC] Re: [SEAOC] UBC Review Classes
- Next by thread: [SEAOC] Re: [SEAOC] Re: [SEAOC] Re: [SEAOC] Software question