Requirement for shop drawings

[ReverenceEng]

Situation: Basically, I am engineering the attachment of a sign cabinet to an existing concrete base. The fabricator doesn't know exactly how they are going to build the cabinet yet, but I want so ensure that whatever they do actually conforms to the basis of design I used to create my anchor loads and specs so the load path works out, etc.

It is industry standard and acceptable to cities for things this small to just have the primary anchorage or foundation engineered. Let's not get bogged down on that issue.

What I want to know, is if there are any standard verbiages that I could put on the front of my drawings that basically say "hey! Fabricator needs to submit proposed shop drawings prior to production so engineer can verify they conform with the basis of design used in this analysis."


Thoughts?

 

[RobertHale]

Two thoughts.
(1) If you have general notes, put a general note on stating something to the effect of "Submit Shop drawings/fabrication drawings of cabinet showing (i) connection locations to foundation, (ii) total weight, (iii) location of center of mass, (iv) ...." etc. I would be really specific and only require that information you need to in order to verify compliance with your design scheme.
(2) I would document the basis of design if possible. Telling the manufacturer where you expect attachment and what loads you are expecting will give them the best chance of getting it right initially. Optimally, they would force their design to conform to your criteria. If that is not the case, it may facilitate a phone call where you can work things out without going to iterations of the approval process.

Robert Hale, PE

 

[Scratch3r]

First guy in the ground and last to get the information.

Draw a picture of the loading scenario assumptions and stick it right next to your stamp.