Pre Eng Building
Pre Eng Building
(OP)
I am link between Architect structural engineer Engineer of Record and Pre Engineered Building structural Engineer. PreEng Building Structural Engineer provided column reaction to Architect EOR to finalize pile foundation design. What level of the detail Architect EOR need to review to accept column base reaction value for foundation design. Does Architect EOR review the detail at the same level professional Engineer stamping the drawing on the design.
Thank you for your time to share your thought.
Thank you for your time to share your thought.






RE: Pre Eng Building
RE: Pre Eng Building
http://www.FerrellEngineering.com
RE: Pre Eng Building
Blind faith in engineering feeds lawyers.
RE: Pre Eng Building
Garth Dreger PE - AZ Phoenix area
As EOR's we should take the responsibility to design our structures to support the components we allow in our design per that industry standards.
RE: Pre Eng Building
http://www.FerrellEngineering.com
RE: Pre Eng Building
If the owner/architect purchased the PEMB without the EOR specifying or otherwise involved in the decision, the EOR isn't really an EOR, and is responsible ONLY for designing the foundation elements with the loads specified by the PEMB manufacturer. Give the owner what they paid to get.
On the other hand, if the EOR provided loads to the PEMB mfg. and was involved in the procurement process, then maybe a check is warranted in keeping with good practice, if the EOR isn't comfortable with the designer. I don't think it is required, and while something as simple as a gravity load check using trib area is a good way to be sure that the building design used the correct loads, this then puts the EOR on the hook for potentially shoddy work by the other engineer.
Whatever the decision, engineers should not give away their services to clients. Doing so removes value from what we do. If the EOR was hired to provide oversight, the level of work required was part of his/her agreement.
RE: Pre Eng Building
RE: Pre Eng Building
One other comment on PEMBs: beware of "preliminary" reactions. They can almost never be trusted. Usually a salesman or technician with access to the manufacturer's software will run the "black box" and give you answers, but they are inevitably way off! It's sometimes hard to understand why they're incapable of checking the right box, or filling your design criteria into the input form. It's only after they have a contract signed on the dotted line that a real engineer will look at it.
RE: Pre Eng Building
That being said, we, unfortunately, get a PEBM foundation design about once every three months. As the EOR we typically will "review" their reactions so we can use them for our foundaton design. Also be careful because a lot of times they will give you service reactions, which need to be factored for conc. design. I typically have to call their engineers and ask them for reactions for each load case so I can factor them using strength design. I also agree with "spats" that you should ask for sealed calculations AND a sealed anchor rod layout drawing.