Jib Crane Foundation

[XPDQ]

I am trying to find out where to look to determine if the grout used at the foundation of a pillar type jib crane is satisfactory or not. The crane rated 2 ton with a 36" x 36" base plate sitting on a 2-1/2" thick, 39" x 39" grout slab. Cracks are visible along the thickness of the grout slab at its outer edges, however the cement below the grout is in very good condition. I don't have much of a background when it comes to foundations. Any help would be greatly appreciated.

 

[InDepth]

keep post to one thread please.

 

[XPDQ]

Sorry, I wasn't sure if this would get more responses being in the Structural Engineers Area vs. The Geotechnical Engineers Area.

 

[Bagman2524]

Doesn't sound like a problem to me. The grout is going to crack. It only carries compressive stresses which the cracks won't affect.

 

[rowingengineer]

thread256-253913

Arguing with an engineer is like wrestling with a pig in mud. After a while you realize that them like it

 

[hokie66]

XPDQ,

Should have been in this forum only. Has no relevance to geotechnical.

 

[PSlem]

I've grouted column bases with metallic grout and it cracked where it was not confined, but was fine under the base plate.