shop drawings
shop drawings
(OP)
Does anyone have an opinion on responsibilities for dimensions on shop drawings?
While we do the structural design and provide general layout drawings of structural steel members, we always ask for shop drawings for structural steel buildings from the manufacturer. We then look over the drawings and approve them prior to construction.
By "approving them" do we accept liability for something that then ends up with the wrong dimension on site? Is there some kind of standard disclaimer note that we could use to say that we're in agremeent with the members and connections shown, but not the member lenghts?
While we do the structural design and provide general layout drawings of structural steel members, we always ask for shop drawings for structural steel buildings from the manufacturer. We then look over the drawings and approve them prior to construction.
By "approving them" do we accept liability for something that then ends up with the wrong dimension on site? Is there some kind of standard disclaimer note that we could use to say that we're in agremeent with the members and connections shown, but not the member lenghts?






RE: shop drawings
I can understand that if you could show that your original input (layout drawing with lengths) had the particular length listed correctly, you might feel you have a case..., but it is going to be difficult. It probably depends, who is contracting who, and who is part of who.
I doubt whether a disclaimer should exclude length because, although it hopefully would not fit, the length is directly involved in the structural integrity of a member.
RE: shop drawings
RE: shop drawings
RE: shop drawings
Do you have anything on the documents that states that the contractor is responsible for fit and measure? confirming site dimensions?
Dik
RE: shop drawings
My work is with public agencies; they make the contractor responsible for fit-up. When we review shop drawings, our main intent is to ensure that the design intent is carried out. Take a plate girder shop drawing for instance, we check to see that the plate sizes match our drawings, splices are where they should be; number of cross frames , etc; dimensions for fabrication are not checked.
RE: shop drawings
RE: shop drawings
Actually I also thought it should be the contractor's responsibility and that you should not sign off shop drawings, if possible... Regulation-wise, are your design/layout drawings not enough?
RE: shop drawings
just wandering Ohio.
rent
RE: shop drawings
RE: shop drawings
RE: shop drawings
Hg
Eng-Tips policies: FAQ731-376
RE: shop drawings
RE: shop drawings
Hg
Eng-Tips policies: FAQ731-376
RE: shop drawings
Our review does not relieve the contractor from following all of the dimensions in the contract documents.
With that being said, I quickly review what they have for the building grid to look for any obvious errors.
RE: shop drawings
www.aisc.org
look under ePubs and free Pubs
Here is a relevent paragraph from the Code:
Such approval shall not relieve the Fabricator of the responsibility for either the
accuracy of the detailed dimensions in the Shop and Erection Drawings or the
general fit-up of parts that are to be assembled in the field.
The Fabricator/Contractor is responsible for the dimensions and fit up of the pieces. The Engineer of Record only checks for general conformance with the design - among other things also listed in the Code of Standard Practice.
RE: shop drawings