AAI Load Calculations & Structural Requirements Flashcards
6 cards from real AAI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 AAI Load Calculations & Structural Requirements flashcards as text
When the engineer of record specifies a minimum embedment depth for an adhesive anchor, what must the installer do if the concrete member thickness is insufficient to achieve that depth?
Answer: Stop work and notify the engineer of record before proceeding
A discrepancy between required embedment and available member thickness is a structural deficiency that requires engineer approval of an alternative solution before installation.
What is the minimum required edge distance for a 3/4-inch diameter adhesive anchor to prevent concrete splitting during installation, per typical ICC-ES evaluation reports?
Answer: Typically 1.75 to 2.5 inches, as specified in the product's ICC-ES report
Minimum edge distance varies by product and is listed in the ICC-ES evaluation report; for 3/4-inch anchors it is typically in the 1.75–2.5 inch range.
How does the ACI 318 anchor design account for the possibility of concrete splitting failure?
Answer: By requiring minimum edge distances, cover, and spacing, or applying a splitting reduction factor
ACI 318 prevents splitting by mandating minimum geometric limits (edge, spacing, cover) or applying a strength reduction factor ψsp when geometric limits cannot be met.
What load effect must be included in anchor design when the supported structure can rotate or deflect under load?
Answer: Prying forces that amplify tension in the anchors nearest the pivot point
Structural rotation under load generates prying action, converting part of the applied moment into additional tension on anchors located farthest from the compression zone.
For an adhesive anchor subjected to shear load at the concrete surface, which failure mode typically governs at shallow embedment depths?
Answer: Concrete pryout failure
At shallow embedment, the lever arm from the concrete surface to the effective shear resistance point is short, making concrete pryout — governed by 2× the tension cone capacity — the controlling failure mode.
Which document provides the basis for the characteristic bond strength (τk) values used in the design of a specific adhesive anchor product?
Answer: The product's ICC-ES Evaluation Report based on testing per AC308
ICC-ES Evaluation Reports, based on product-specific testing conducted to AC308 acceptance criteria, are the authoritative source for characteristic bond strength values used in design.