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 11 — Connections, Splices, Cross-Frames, and Bracing (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
Slip resistance per 7/8-in A325 bolt, Class B, standard holes, double shear.
kipSplice bolt pattern
- Q2
Number of 7/8-in bolts needed for a 950-kip Service II splice force.
- - Q3AASHTO Class B slip surface implies:
- Q4
Fillet weld strength — two ¼-in E70 welds along 8 in.
kip - Q5
Cross-frame V-load: M_u = 3200 k-ft, L_b = 20 ft, D = 5.5 ft, R = 700 ft. H (kip) ≈
kipK-frame
- Q6
Diagonal axial force for H = 12 kip and diagonal at 45°.
kip - Q7Minimum fillet weld length per AASHTO §6.13.3.5:
- Q8
Bolt bearing on ply: d = 7/8 in, t = ½ in, F_u = 65 ksi.
kip - Q9AASHTO requires field splices to be:
- Q10
Splice-plate area for flange force 560 kip, F_y = 50 ksi (in²).
in² - Q11
Nominal shear stud strength: A_sc = 0.79 in², f′_c = 4 ksi, E_c = 3640 ksi.
kip - Q12Cross-frame end connections in a curved bridge should be designed for:
- Q13
Block shear on tension member: A_nt = 1.2 in², A_nv = 3.6 in², F_u = 65 ksi.
kip - Q14
Anchor rod tension per rod for 120-kip uplift, 4 rods.
kip - Q15Diaphragms/cross-frames are considered primary members in:
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