[Lerftest] LERF Gallery Raised Floor

[Harry W. Fanning]

Joe,

I like Plan C idea better.


*Harry Fanning*
Accelerator Division Safety Officer
Jefferson Lab - Accelerator Division
Office: 757-269-7619
Cell: 757-768-9019
fanning at jlab.org <mailto:fanning at jlab.org>
/Put Safety in the Planning Process - Not the Investigation Process/

On 1/30/2018 3:07 PM, Joseph Gubeli wrote:
>
> Plan C – no brackets, pins or holes. We can use a grating c-clip that 
> can be installed/removed with a nut driver. Unless I hear otherwise 
> very soon we will go with these clips, 1” bar grating and the 4” 
> channels.
>
> Joe
>
> https://images1.mcmaster.com/mvB/contents/gfx/large/6268t551p2-g01c-digitall.png?ver=1469625686
>
> *From:* Lerftest [mailto:lerftest-bounces at jlab.org] *On Behalf Of 
> *Joseph Gubeli
> *Sent:* Tuesday, January 30, 2018 2:26 PM
> *To:* lerftest at jlab.org
> *Subject:* Re: [Lerftest] LERF Gallery Raised Floor
>
> The image to go with the last email.
>
> Cheers, Joe
>
> *From:* Lerftest [mailto:lerftest-bounces at jlab.org] *On Behalf Of 
> *Joseph Gubeli
> *Sent:* Tuesday, January 30, 2018 12:52 PM
> *To:* lerftest at jlab.org <mailto:lerftest at jlab.org>
> *Subject:* Re: [Lerftest] LERF Gallery Raised Floor
>
> Please ignore the L bracket method to prevent grating slip. A better 
> approach would be to add rods to the bottom of the grating that would 
> fit into oversized hole in the top of the channel. The connection to 
> the floor would be just through the bottom flange. This would allow 
> for a smooth channel top during cable installation. I’ll send out an 
> image later.
>
> Cheers, Joe
>
> *From:* Lerftest [mailto:lerftest-bounces at jlab.org] *On Behalf Of 
> *Joseph Gubeli
> *Sent:* Tuesday, January 30, 2018 11:05 AM
> *To:* lerftest at jlab.org <mailto:lerftest at jlab.org>
> *Subject:* [Lerftest] LERF Gallery Raised Floor
>
> The images below are, in general, what I imaging the raised floor will 
> look like behind the SSAs. The grating is 1” x 3/16” (18” x ~34”) 
> aluminum with a safe load of 632 lbs per square foot for a 24” span, 
> our unsupported span is 15”. The channel is 6061 aluminum 4” x 1.58” x 
> 0.18” anchored to the floor with ¼-20 bolts spaced 18” apart. The “L” 
> brackets will keep the grating from sliding much. More of this raised 
> floor could be added to extend to penetrations. Let me know if there 
> are a questions or comments.
>
> Thanks, Joe
>
> Joseph F. Gubeli
>
> Jefferson Lab.
>
> 12000 Jefferson Ave.
>
> Newport News, VA 23606
>
> (757) 269-7862 (Office)
>
> (757) 344-4159 (Cell)
>
> gubeli at jlab.org <mailto:gubeli at jlab.org>
>
>
>
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