NASCLA Accredited Commercial General ContractorMetalsEasy
A structural steel connection requires a specific type of bolt for high-strength applications where slip resistance is critical. Which of the following bolt designations is most appropriate for such a connection according to AISC specifications?
- AASTM A325
- BASTM A307
- CASTM F1554
- DASTM A36
Show answer & explanationAnswer & explanation
Correct answer: A. ASTM A325
ASTM A325 bolts are high-strength structural bolts commonly used in steel construction for connections requiring slip resistance and high tensile strength. A307 are standard bolts, F1554 are anchor bolts, and A36 is a steel grade, not a bolt designation.
Why the other options are wrong
- B. ASTM A307 bolts are standard-strength, low-carbon steel fasteners, not suitable for high-strength slip-critical connections.
- C. ASTM F1554 refers to anchor bolts used to anchor structural supports to concrete foundations, not for connecting steel members.
- D. ASTM A36 is a specification for carbon structural steel shapes, plates, and bars, not for bolts.
High-Strength Structural Bolts
Bolts, such as ASTM A325 and A490, used in structural steel connections to achieve high tensile strength and slip resistance, critical for robust structural integrity.
- ASTM A325: Common high-strength bolt for structural steel.
- ASTM A490: Higher strength than A325, used for more demanding applications.
- Essential for slip-critical connections where movement must be prevented.
Memory trick: Always Pick Strong Bolts for Critical Connections.