This educational application supplements, but does not replace, the official AASHTO LRFD Bridge Design Specifications, applicable state DOT manuals, project specifications, and professional engineering judgment.
Graded quiz
Chapter 16 — Wind, Collision, Extreme Events, and Resilience (15 questions)
15 questions · PE-exam format · 70% to pass · attempts save to your progress record when signed in.
Work each item to the requested precision. Use the Show clue button only after an honest attempt — hints reveal the AASHTO section and setup, not the answer.
- Q1
Wind pressure P_z (ksf): V = 115 mph, K_z = 0.98, G = 1.0, C_d = 1.3.
ksfWind on girder
- Q2
Distributed girder wind load for P_z = 0.043 ksf, D = 6 ft.
klf - Q3AASHTO CT (vehicle collision) design force on an unprotected pier per §3.6.5:
- Q4
Scaled distance Z for R = 30 ft, W = 1000 lb TNT.
ft/lb^(1/3)Blast stand-off
- Q5Load combination for vessel collision on a pier is:
- Q6
Barge crush force P_B (approximate): DWT = 4000 ton, V = 6 ft/s.
kip - Q7Which test level is required for a bridge rail on a high-speed highway carrying heavy trucks?
- Q8
Ice load on pier: p = 20 ksf, t = 1.5 ft, w = 5 ft.
kip - Q9For fire under a bridge, code guidance in ASCE/SEI 41 and PCI recommends assessment when:
- Q10
Progressive-collapse: 4-column bent loses one column, tributary P = 1200 kip. New load per remaining column.
kip - Q11
Overturning FS: dead weight 800 kip at arm 6 ft; wind 60 kip at height 30 ft.
- - Q12The reduction factor K_z for wind at z = 40 ft in Exposure C is approximately:
- Q13The AASHTO wind pressure design procedure applies to which class of bridges directly?
- Q14
Vehicle collision CT: 600 kip acting 5 ft above base. Moment at base per column.
k-ft - Q15AASHTO recognizes 'resilience' credits chiefly through:
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