Gullick Jacks

[corrosionman]

This is the name of something very similar to an expansion bolt - - they are 4 inches long and inserted into a 30 mm diameter hole drilled into sandstone. Tightening the nut expands the item upwards creating a vertical force. A number of them can be used in a circumferential ring to lift a circular column (as in a church).
Does anyone know where they can be obtained (or any similar product )
Any comments greatfully appreciated. DW

 

[iainuts]

For expansion bolts, our company uses Hilti fasteners. They have quite a wide range, so I suspect you could find what you're looking for there. Here's the web site:

http://www.us.hilti.com/

When I checked it was down for maintenance though. If you go to the Thomas register web site you can find local distributors for them:

http://www.thomasnet.com/compsearch.html?cov=NA&which=comp&what=hilti&navsec=search

 

[GregLocock]

also rawlbolts.

Cheers

Greg Locock

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.

 

[MikeHalloran]

http://www.google.com/search?num=10...ent=opera&rls=en&q=Gullick+Dobson&btnG=Search

It appears that Gullick Dobson, an old supplier of mining machinery, has morphed into Joy Mining Machinery.

It's not clear if they sell individual elements of their roof bolting systems. It's also not clear that's what you want.

What are you trying to do?


Mike Halloran
Pembroke Pines, FL, USA

 

[corrosionman]

Mike Halloran Thanks for input Yes, Gullick were bought up by Joy who then sold that side of business to a UK firm Air power Products who now discontinued the Gullick Wedges.
However I now have discovered the proposed use and intend to distance myself from the project ! ! !
A Church roof has six large sandstone support columns which are seen to have cracks on one side only. A Consultant suggests this is caused by settlement of the foundation plinths, which reduces the load on one side but overloads it in the other . This overload is causing the cracks.The Consultant suggests that Gullick Jacks be drilled and fitted into the uncracked side and by tightening them up it will cause this side to take a proportion of the load and solve the problem ! The Consultant does however invite the Contractor to offer alternative proposals provided there is adequate insurance cover in place for the work !
I'll keep you posted on the outcome.

 

[btrueblood]

Ai-yi-yi. The hair on my arms and back of the neck stood up straight when I read that!

 

[rorschach]

I agree, RUN, do not walk, away if at all possible.

 

[unclesyd]

Don't run, stay and watch, it is done all the time. Whether any of these systems will work in your case is different question.
I would give these people a look see and maybe a call.

http://www.saberleveling.com/florid...oogle&utm_medium=ppc&utm_campaign=fgr_raising

http://www.uretekworldwide.com/index2.html

A different approcach.

http://www.magnumpiering.com/commercial/helical_pier_system.aspx