Bolted connection next to the web of the beam

[CTABET]

Hello
I am a civil project engineer working on an industrial project.
I have 2 parallel existing HEB500 beams on which we need to install a new equipment (cylindrical equipment bolted to the beams).
The layout of the holes (Ø45mm) shows that for some cases, the bolts are in conflict with the fillet radius R.
I cannot move the equipment to the right or left since the bolts will eventually clash with the web of one of the 2 sides.
I have the 2 following questions :

Is it feasible to make the bolted connection within the fillet radius and complete the void with shims ?
Is there any minimum distance to respect between the bolt head and the web ? For execution purposes, I will request the supplier to insert the bolt from downside and fasten from the upper side.

(sketch in attachment)

Thank you in advance

 

[desertfox]

Hi CTABET

I have no idea what your structural requirements are but when I’ve run into this problem we have cut a small rectangle in the top of the flange thereby removing the fillet radius locally so that we could assembly the bolt or screw, obviously you need to ensure you don’t weaken the structural integrity. Alternatively can you slot the holes and allow the offending bolt head to clear the fillet radius?

“Do not worry about your problems with mathematics, I assure you mine are far greater.” Albert Einstein

 

[SWComposites]

make a steel "radius filler" block, with one side machined to fit the radius. make the block larger than the head/washer/nut.

minimum distance between bolt head and web - yeah, enough distance to get a wrench or socket on it.

 

[mfgenggear]

Ctebet
Have the holes receive a spot face to clear the head bolts.
Run the numbers for stress for wall thickness
Should be fine.

 

[CTABET]

Thank you all for your replies.
The attached drawing is still a concept.
Is it feasible to fix the bolt head (lower part) with an open-end wrench to reduce the clearance distance and fasten from the upper side (no clearance limitation and easier for access) ?

 

[MintJulep]

Do you really need a 45 mm bolt for strength?

Could a smaller bolt work if you moved the center of the hole?

 

[Tmoose]

https://www.mcmaster.com/products/reverse-spot-facers/

As others said, don't forget wrench clearance when selecting the size of the spotface.

Does the equipment have to be installed directly to the face of the beam flange.

"Adapters" a couple inches thick could have a bolt pattern to match the beam, and a pattern to match the equipment mounting features.

https://m.media-amazon.com/images/I/61DA69LkbHS._AC_SX679_PIbundle-2,TopRight,0,0_SH20_.jpg

 

[mfgenggear]

Gentlemen
An extended socket can also be used, to reach
The hex head. High impact socket with
An extension. To assemble. The torque wrench
Will have to clear with direct connection to socket.

 

[mfgenggear]

MJ
I was laughing at the video.
Because I was that last guy who said once in a meeting, nope. After the meeting I got my butt ripped by the VP. Quote never tell a customer it can't be done. We will figure it out unquote.

 

[r6155]

How do you plan to tension the 45mm bolt?

Regards

 

[CTABET]

Thanks for your answers.