Steel As-Built Drawings

[charliealphabravo]

Hi guys.

As SER we prepared drawings for a steel tower structure to support and provide access to process equipment. The fabricator/connection designer also prepared drawings which are much more detailed than ours and include various/numerous approved changes to the design which occurred during construction.

My question relates to what our final approval should look like. In this situation would one typically mark-up the original drawings with all the changes and issue that as a record drawing or rather write a letter of no objection to the fabricators as-built drawings?

TIA

 

[charliealphabravo]

Toward answering my own question I will add that we are already issuing our own record drawings to cover the foundation and tie-ins to the existing structure.

I guess the question remains regarding the approach to the steel package of the primary structure for which we are also SER (less the connections). Would one typically reference the more detailed as-built drawings prepared by the fabricator or would a complete transcription of the changes to our own drawing be in order?

Thanks again.

 

[JAE]

My view -
Your instrument of service typically is your sealed drawings.

If there were, as you say, numerous approved changes which were communicated via revised drawings, letters, emails, etc. then the
sum total of the original drawings plus these subsequent communications (all documented clearly I would assume) then would constitute the total of your instruments of service.

Sometimes clients prefer that the engineer of record compile all these disparate changes into one "as-built" or "record" set of drawings.
It is not absolutely required unless you yourself, or your client, would prefer to archive the information that way.

If there is the potential for confusion - i.e. some changes might not be communicated clearly for some reason, then you probably have it in your best interest to compile the changes and issue them as a final revised set. That way there is an obligation on the part of others (contractor, fabricator, and erector) to review and respond if they differ from what they understood the changes to be from the misc. sources.

Also - it provides other disciplines (mechanical, architectural, electrical) to better and perhaps more easily see all the changes in one place.



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