#Anchoring to hollow core plank code
Unfortunately, prior to October of 2017, the International Code Council Evaluation Service’s (ICC-ES) Acceptance Criteria (AC) for Mechanical Anchors in Concrete Elements (AC 193) did not permit testing and design of post-installed anchors with an embedment depth, hef, less than 1½ inches, except for redundant fastening designs which then permitted a 1-inch embedment depth. To help contractors with attachments in concrete with prestressing steel cables and ¾-inch cover, post-installed anchor manufacturers have developed shallow embedment anchors that are intended to have ¾-inch drilled holes that will avoid the steel cables, no matter where the installer drills into the concrete ceiling. Traditional hollow core slab with prestressing steel cable. Non-structural elements will still have dead loads, live loads, and seismic loading conditions to consider. Thus, it is still a requirement to design non-structural element connections to concrete using the anchor design provisions of Chapter 17 of ACI 318-14, Building Code Requirements for Structural Concrete and Commentary (ACI 318-14R). While non-structural elements are not needed to support the main structure, their anchorage to concrete still requires the same level of safety as a design for a structural building element connection. Building Integrated Modeling (BIM) has made cast-in anchors more common for non-structural elements hung from the ceiling, but post-installed fixations still dominate because mechanical and electrical locations can move after the concrete is cast. Non-structural elements, such as fire sprinkler pipes, electrical conduit and cable trays, and heating, ventilating, and air conditioning (HVAC) equipment and ductwork are especially suited for post-installed anchor fastening. Post-installed anchoring systems are very common, cost-effective methods for attaching both structural and non-structural elements to concrete base materials.
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