What Is Post-Installed Anchor Design per ACI 318?
Post-installed anchors (the expansion, the adhesive, the screw — the concrete's — the retrofit's) are designed per ACI 318 Chapter 17 (the CCD — the concrete capacity design; the failure modes' — the checked). The design: the tension/shear (the Nn/Vn — the steel's, the concrete's, the pullout's), the edge (the distances' — the reduced), and the seismic (the ductile — the steel's). The existing concrete's — the engineered connection.
Best price · Quotes back fast · PE stamps backed by Apex Grid Engineering
The failure modes
The steel (the ductile — the anchor's; the preferred), the concrete (the breakout — the cone's; the CCD's), the pullout (the expansion's — the slip; the adhesive's — the bond), the side-face (the blowout — the edge's), and the pryout (the shear's — the concrete's).
Design per Chapter 17
The Nn/Vn (the nominal's — the modes'; the phi's — the brittle's lower), the edge (the ca — the distances'; the reduced — the capacity), the groups (the ecc — the eccentricity's; the interaction — the tension-shear's), the cracked (the assumed — the seismic's; the 1.0), and the seismic (the ductile steel — the required; the SDC C+').
Installation and QA
The adhesive (the holes' — the cleaned; the cure's — the temperature's), the torque (the expansion's — the specified; the verified), the inspection (the special — the required; the proof's — the loading), and the ESR (the reports' — the ICC-ES's; the listed). The anchor is the retrofit's — the Chapter 17's design, the installation's QA.
The bottom line
Design post-installed anchors per ACI 318 Ch. 17 (check steel, concrete breakout, pullout, edge distances; ductile steel in SDC C+) — require ICC-ES reports, proper hole prep, and special inspection.
Torch Engineering PLLC · (480) 490-0064 · info@torchengineering.com — PE stamping backed by Apex Grid Engineering.