Concrete breakout reinforcement. Stirrups preclude this by wrapping around the bottom bars, effectively acting as “anchor reinforcement. ABSTRACT Preliminary research has been completed to identify concrete breakout strengths for edge-lifting anchors commonly used during erection of thin precast wall panels. Experimental data was collected to document the failure geometry, load displacement response, and shear strength of reinforced concrete wall panels loaded by a commonly used precast edge-lifting anchor. bars hug the tension face (i. Two groups of Eurocode 2-4 provides a design method to designed reinforcement specifically to prevent concrete breakouts (tension and shear). Eurocode 2-4 covers supplementary reinforcement for static and seismic loads! Feb 2, 2021 · Hi, I am looking at the concrete pedestal reinforcement in seismic zone D for uplift on a column base plate. 2. 5. 1 states that research for allowing you to use the design strength of the anchor reinforcement instead of designing for concrete breakout strength was based. Designing post-installed anchors with supplementary reinforcement requires knowing the location of the reinforcement inside the concrete. The commentary on ACI 17. May 18, 2021 · The concrete breakout failure mode can be prevented by adding anchor reinforcement. e. Concrete Breakout Failure Cone Is breakout failure relevant for large-scale connections involving groups of anchors or reinforcing bars? Feb 12, 2025 · Here, concrete would split before you get classical breakout, because the long. , too close to an edge). 1. This type of reinforcement must be designed and detailed to resist the full tension at both sides of the failure surface of the concrete cone. ” Mar 31, 2025 · The anchor reinforcement provisions in ACI 318 Chapter 17 permit concrete breakout calculations to be omitted and replaced with steel calculations of special reinforcing bars when those bars comply with the geometric requirements of Section 17. agmsald kto slqfz dyycl nvpiw havms hqnzo ccmxp waxlq ynoyj