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For steel moment frame construction in California's high seismic zones, which welding inspection requirement is mandated by CBC Chapter 17 for beam-to-column connections?

Correct Answer

B) 100% ultrasonic testing by a certified welding inspector

CBC Section 1705.12.2 requires 100% ultrasonic testing of complete joint penetration groove welds in steel moment frame beam-to-column connections in high seismic applications. This stringent requirement ensures weld quality critical for seismic performance, as these connections are essential components of the lateral force resisting system.

Answer Options
A
Magnetic particle testing of all welds
B
100% ultrasonic testing by a certified welding inspector
C
Visual inspection only by the contractor
D
Ultrasonic testing of 25% of welds by a certified inspector

Why This Is the Correct Answer

CBC Section 1705.12.2 requires 100% ultrasonic testing of complete joint penetration groove welds in steel moment frame beam-to-column connections in high seismic applications. This stringent requirement ensures weld quality critical for seismic performance, as these connections are essential components of the lateral force resisting system.

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