Anchor Bolt Sleeves

[spats]

I wanted to see how other engineers feel about the use of anchor bolt/anchor rod sleeves. These are normally plastic sleeves that create an annular space around the top of a cast-in bolt to create a tolerance for adjustment by essentially bending the bolt. The sleeve is filled with non-shrink grout after adjustment. Supposedly they're used all the time, particularly for machinery and equipment foundations.

I just don't like the concept, but I'm willing to listen.

 

[hokie66]

Each to his own. Not my normal practice to use anchor bolt design software.

 

[MikeHalloran]

I used Deco anchors to tie down some flight simulators in ~1972.
No complaints so far.



Mike Halloran
Pembroke Pines, FL, USA

 

[FDiego]

http://www.bentley.com/en-US/Products/RAM+Connection/Features-List.htm

 

[paddingtongreen]

Can somebody explain how you grout a baseplate, tension the bolts and then fill the void with grout. Put another way, how do you grout without filling the void?

That Deco bolt is interesting, I started out working on the design of oil refineries: for some stacks and big towers, we had some anchors fabricated where the nut was near the bottom of the tube and a long bolt screwed in place after the equipment was set and leveled on shims. The grout was dry-packed as we didn't have non-shrink back then, some got into the tubes but they didn't fill completely.

Michael.
Timing has a lot to do with the outcome of a rain dance.