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Title: Concrete Q&A: Load Factors for Service-Level Wind Loads and Anchor Stretch Length, Sleeves, and Effective Depth


Publication: Concrete International

Volume: 44

Issue: 9

Appears on pages(s): 71-72

Keywords: footing, tremie, form, exit

Date: 9/1/2022


According to Appendix C—Alternative Load and Strength Reduction Factors in ACI 318-111 and previous versions, a load combination given by Eq. (C.9-2), U = 0.75(1.4D + 1.7L) + 1.6W, can be used for structures when service-level wind loads are used. Because this appendix was removed from ACI 318-142 and ACI 318-19,3 could these requirements still be used when designing with ACI 318-19?

According to Fig. 1 (Fig. R17.10.5.3 in ACI 318-191), grout pad thickness is included when calculating stretch length. Is that correct? If using sleeves, can they be filled with grout? What is the effective depth (hef) of an anchor with a sleeve?


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