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There are many different applications for anchorage to concrete.
Contractors use epoxy to bond rebar dowels from existing concrete to new concrete. Epoxy is also used to anchor in threaded steel rods from existing concrete to a steel base plate. These threaded rods are secured in place by epoxy into existing foundations, slabs, or walls, and are used for interlocking the new expansion to the existing walls and foundations. We check epoxy placement per plan for locations, type, date, condition of percussion hammer-drilled holes, and cleanliness of holes. We observe the epoxy mix, placement and installation of rebar, all threads or hold-downs, and also check lot number and expiration date of the epoxy resin
Wedge or Expansion Anchors
We inspect the installation of mechanical anchors: for example, the Hilti KB-TZ anchor bolts drilled and inserted into a concrete filled fluted metal deck and torque tested to manufacturer’s recommendation.

Typical use of these anchors are usually used to support mechanical systems, racking systems and to anchor machinery to concrete floors

Proprietary Anchor Inspection

Special Inspection is critical when installing epoxy anchors. These types of anchors are commonly used to anchor critical members to concrete. The holes need to be prepared properly for the anchors to function properly. If the holes are contaminated with dust, water or other foreign objects the anchors may fail while in service. There are several documented cases where anchors have failed while in serivce because of the lack of special inspection.
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