MPC Beam designation

[hawkaz]

I am looking at plans from the early 80s for floor framing for a mall in Southern California. Concrete over steel deck construction

The beams are called out with MPC designations- i.e. MPC 16 1/4 X 20.4 <15>-1/4.
These beams are spaced up to 10 feet on center and span approx 30 feet.

Does anyone know what this member is?

Thanks

 

[JAE]

Similar question posed last year here: thread488-326947

 

[msquared48]

Have you tried calling up the design firm that produced the drawings, if they are still around or have morphed?

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[hawkaz]

The prior company is gone (30+ year old job). Unfortunately, the responces to the prior post listed above were 'I don't know'.

Thanks for the suggestions

 

[msquared48]

Did another firm buy that company and maybe the access to the drawing files is still there?

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[TCSE]

I have the same issue on a shopping center in San Diego that was designed in 1980. For example, MPC18 1/2 x 25.7 (15) 1/4. I take that as a steel composite beam with camber. (But who'd camber something 1/4"?) I can't see it because it has sheet rock over it.

A general section shows it like a composite W shape. There's no definition of it on the plans and even the connection details/schedules ignore it completely.

The engineering company has a fancy symbol that looks like GKT Consulting Engineers in Marina Del Rey.

I guess I'll find out what it is eventually because I have to drill holes for plumbing in it.

 

[JedClampett]

As far as hawkaz's original question, I did some cyberstalking using some NSA software last night. The engineer who sealed the plans is still registered in Arizona and his address is in St. George, Utah. I can't guarantee he's still alive, but that's a lead. Plus there's some linkage to a company in San Diego.
Since this has been posted twice and the greatest Eng-Tips minds can't solve this, I would give him a call. Or call the original structural engineer's successor company.

 

[msquared48]

Obviously he retired there to slay his dragons too. Great little town, by the way.

Mike McCann
MMC Engineering

 

[JEB6]

From SoCal mall drawings around 1980: MPC designation is for Marcrest built-up wide flange beams. From those drawings,

MPC16X20.2: h=16.25" tw=0.185 bftop = 4" bfbot = 5.75" tftop = .312" tfbot = 0.312"

Hope this helps.