Bonding clamp for steelwork

[dg2908]

I need to bond an installation in a sectional building. The structure is made from several I-Beam arches joined by timber purlins so I need to bond each arch. I can't find these clamps mentioned much online, are they just called "I beam bonding clamps" or do I need to ask for something else?

There is one separate piece of steel in the building that supports the side of a gate - this is steel box section - how would people normally bond box section without drilling it?

 

[benji]

somebody must have designed the building structure ask them

 

[Richard Burns]

Perhaps try searching for glazing bar hold fast, they should do what you want on structural steel I beams.

 

[Bobster]

http://www-public.tnb.com/eel/docs/furse/Total_Solution_TSC-0912_Earth_Bonds_Clamps.pdf


Page 10

 

[nickblake]

Does the steel need bonding if the main posts are sunk into the ground then its may not need bonding

 

[Bobster]

If they are sunk into a concrete foundation they almost definitely need bonding.

 

[Knobhead]

.

If I remember what they said it was you should only drill the web of the I beam and only within the centre third of the width leaving the outer thirds well alone, if you follow this then it will have no detriment to the structural integrity of the beam. if the hole is sizable or strays into the outer third on either side then a structural assessment should be made. The Irony here is wood is 10times weaker than steel and if we were so red-taped with H&S with wood as we are with steel then we would be requiring a structural Engineers evaluation and permision everytime we drill a wooden joist in a typical house.

Why didn’t state that proviso in the first place.

You stated you regularly drilled RSJ’s and no one should worry about it.

Unless there is torsional or transverse stress the centre of the web is reasonably safe.

 

[Marvo]

We have drilled holes in beams before but depending on their thickness it's not easy unless you have a mag-mount drill. It would be advisable to get the go ahead from the structural engineer on site if there is one. We also have a portable spot welder in the workshop that can spot weld up to a 10mm stud onto a plate or beam, if there were multiple studs required this would be the quicker option.

 

[Darkwood]

Why didn’t state that proviso in the first place.

You stated you regularly drilled RSJ’s and no one should worry about it.

Unless there is torsional or transverse stress the centre of the web is reasonably safe.

Yes maybe would have been wise tbh it may have helped but reacted to the blanket ban on attitude some hold where in fact its not the case .... point noted Tony

 

[Knobhead]

I did qualify my post by saying reasonably safe.

I still wouldn’t drill a beam, I would much rather weld a stud on.

 

[Engineer54]

Huh, the times i've gone to our Project Structural Engineers to get permission to drill steel I and H beams etc, NEVER been refused yet!! In fact most of them just laugh at you when you ask to drill a 14mm hole in steelwork, whether it's for a nut and bolt or a tapped bolt connection.

 

[davesparks]

I did qualify my post by saying reasonably safe.

I still wouldn’t drill a beam, I would much rather weld a stud on.

Tony you have missed out on the joys of the modern building site!
I have to get a hot works permit to use a soldering iron, what chance is there of being allowed to weld anything!

 

[Bobster]

I'm going to comment tomorrow whilst I'm not drunk.

 

[Knobhead]

Tony you have missed out on the joys of the modern building site!
I have to get a hot works permit to use a soldering iron, what chance is there of being allowed to weld anything!

I’d rather go through the rigmarole of getting a permit than drill a beam. Added to which while I’m sorting a permit out I’m doing nothing else, I still got paid.

Normally a 12mm stud would be welded near a cable run at various points in the building during construction.

 

[shanky887614]

Tony you have missed out on the joys of the modern building site!
I have to get a hot works permit to use a soldering iron, what chance is there of being allowed to weld anything!

get a plumber to weld it for you XD

easy because they will have a permit.

 

[telectrix]

a plumber hasn' t got the brains to refit a BS951 after altering pipework. how's he going to cope with a welder?