Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Incorporation of prototype drawings into design drawings and certification of drawings

Incorporation of prototype drawings into design drawings and certification of drawings

Incorporation of prototype drawings into design drawings and certification of drawings

My firm provides design work for a chain or retail stores that uses typical systems and equipment throughout their many locations. The owner provides prototype drawings to us through the architect that we adapt to the space and any unique electrical requirements. These prototypes include some detail drawings (wiring details for registers, electrical room telecom/signal backboard layout, sensor roof can, etc.) that should be incorporated into the final design drawings without modification. I review these for technical accuracy before incorporation at least the first time they are being used.

A supervisor had occasion to review drawings while I was on vacation. He insists that a note be added to the drawings disclaiming liability for the prototype detail designs and excluding them from the certification of the PE stamp. He reasons that these prototypes were created by others not under our supervision. It may also be rooted in his extensive forensic engineering work where questions of liability are regularly discussed. This requirement has created conflict with the client/architect, who believes that the AHJ will not allow this and is reluctant for us to approach the AHJ to discuss.

My reasoning in the past was that though any system of components in question had not be directly designed by our firm, our review of the systems for incorporation in the overall design brought it into the sphere of responsible work. This would be similar to incorporating a light fixture into our design though we do not assume responsibility for the design of the fixture.

Can anyone provide some guidance regarding the inclusion of prototype or vendor drawings into design drawings? Is the disclaimer described above reasonable or is there a better solution? What issues of liability arise from the inclusion of previously designed systems?

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close