Anchorage of Granite Base
Anchorage of Granite Base
(OP)
I have several granite bases (30"x30"x30") subject to overturning due to wind loads on sculptures supported by the granite bases. The granite bases are typically dowelled into a reinforced concrete footing. I have attached a sketch.
Normally I would propose anchoring the granite base using threaded stainless steel rods and an epoxy type adhesive (I would typically specify Hilti HY-150). Anchorage into the concrete footing is not a problem, however, Hilti does not recommend or support their products when drilled into granite. I am not sure how I can justify a minimum design value for the dowels without some idea of the capabilities of the adhesive in a core drilled (and roughened) hole in the granite base.
Any suggestions for anchoring to the granite bases? i.e. alternate products, alternate methods, testing, etc..
Normally I would propose anchoring the granite base using threaded stainless steel rods and an epoxy type adhesive (I would typically specify Hilti HY-150). Anchorage into the concrete footing is not a problem, however, Hilti does not recommend or support their products when drilled into granite. I am not sure how I can justify a minimum design value for the dowels without some idea of the capabilities of the adhesive in a core drilled (and roughened) hole in the granite base.
Any suggestions for anchoring to the granite bases? i.e. alternate products, alternate methods, testing, etc..






RE: Anchorage of Granite Base
RE: Anchorage of Granite Base
http://www.williamsform.com/
RE: Anchorage of Granite Base
RE: Anchorage of Granite Base
RE: Anchorage of Granite Base
RE: Anchorage of Granite Base
RE: Anchorage of Granite Base
I think I am going to either A) look for an combo undercut/adhesive anchor to dowel into the granite, then epoxy it's extension into the concrete or B) install conservatively designed adhesive anchors into the granite and proof load by having the contractor lift the granite base up by the dowels, i.e. use the self weight of the base itself for the load.