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Re: Overhead anchors

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According to their ICBO-ES approvals, epoxy anchors typically begin strength loss at around 105 deg F, and have about 35%of the approved strength at 180 deg.  Epcon Acrylic A& begins strength loss at about 135 deg F and has about 40% of its approved strength at 180 deg.  Simpson charts show 60% of the approved strength at 180 deg.  None seem very good for overhead installations where fire is a consideration.
Most ICBO-ES approvals for chemical anchors do not allow them to be used to resist pullout forces from walls and ceilings without special consideration for elevated temperatures.
Nels Roselund
Structural Engineer
South San Gabriel, CA