ANCHORING TO HOLLOW CORE PLANK MANUAL

I DO understand the proprietary reasoning behind the low values. Hilti screen-tube sleeve anchors with threaded rod and epoxy.

ANCHORING TO HOLLOW CORE PLANK MANUAL

Tapcon / concrete / masonry screws which have a low tensile value for hollow core material. This manual was prepared by Computerized Structural Design, S.C., Milwaukee, Wisconsin with input and direction from the PCI Hollow Core Slab Producers. In general, ONE failure is typically enough! Any comments on this? Has anyone else had this complaint? The allowable tensions for drop-ins are better than most anchors for hollow core, BUT, i've stayed away because of ONE complaint. That was years ago and i will need to re-investigate that with more than one site foreman. The Hollow-set Dropin anchor is designed for anchoring in hollow base materials such as hollow concrete block and precast hollow core plank. Rawl / Powers / Simpson Drop-ins which actually have a 'better' allowable tension, but, the main contractor i have been working with complains that the drop-ins tend to spin within the material. The Simpson Strong-Tie ® Hollow Drop-In Anchor (HDIA) is an internally threaded, flush-mount expansion anchor for use in hollow materials such as CMU and hollow-core plank, as well as in solid base materials such as brick, normal-weight and lightweight concrete. This does not make it practical to specify an anchor in the office to obtain state approval.ĭoes anyone have a dependable and satisfactory method or anchor manufacturer to recommend?Īmong others that i do not recall at this time, I've specified the following: Simpson Strong-Tie HDIA37 Hollow Drop-In Expansion Anchor 3/8' 50ct. On-site testing is required to determine the actual performance of the anchor.

Therefore, how can i specify an anchor with such a waiver? Can we interpolate the values? And if so, the result would be that much lower.ģ. Spancrete specifies its concrete to be 5,000 psi. The tabulated allowable loads are for anchors installed in hollow core concrete with a minimum compressive strength of 7,000 psi. The allowable loads are very low to accomplish the necessary load.Ģ. There are a variety of anchors for hollow core material applications to CMU, brick, plank and panel.ġ.

Anchoring to hollow core plank