BAILEY BRIDGE CORE REVIEWS ANSWERS AND
QUESTIONS SET A+
✔✔At the outset of World War II, the US Army sought a versatile bridge that could span
a variety of gaps and be quickly assembled by __________________. - ✔✔manpower
alone
✔✔How long is a steel truss section? - ✔✔10 ft
✔✔Where would you insert the transoms as the panels of the third bay are being
placed? - ✔✔In the second bay
✔✔What is the short panel pin used for? - ✔✔To pin the end posts of the outer middle
trusses in a triple-truss bridge
✔✔What is the vertical lift when the launching-nose link is positioned at 10 feet and 40
feet? - ✔✔67 1/2 inches
✔✔True or False: When jacking down the Single-Single bridge, the jacks must be
operated on only one end of the bridge at a time. - ✔✔true
✔✔What is the assembly time for a 120-foot DD during mission-oriented protection
posture (MOPP) conditions? - ✔✔not: 5 hours
✔✔How is the class of the bridge determined? - ✔✔By the type of vehicles it must carry
✔✔How many rocking rollers are needed for a 150-foot TS bridge on the near and far
banks? - ✔✔4 for the near bank, and 2 for the far bank
✔✔What is the safety setback on an unprepared abutment with a bank height 7 feet? -
✔✔10.5 ft
QUESTIONS SET A+
✔✔At the outset of World War II, the US Army sought a versatile bridge that could span
a variety of gaps and be quickly assembled by __________________. - ✔✔manpower
alone
✔✔How long is a steel truss section? - ✔✔10 ft
✔✔Where would you insert the transoms as the panels of the third bay are being
placed? - ✔✔In the second bay
✔✔What is the short panel pin used for? - ✔✔To pin the end posts of the outer middle
trusses in a triple-truss bridge
✔✔What is the vertical lift when the launching-nose link is positioned at 10 feet and 40
feet? - ✔✔67 1/2 inches
✔✔True or False: When jacking down the Single-Single bridge, the jacks must be
operated on only one end of the bridge at a time. - ✔✔true
✔✔What is the assembly time for a 120-foot DD during mission-oriented protection
posture (MOPP) conditions? - ✔✔not: 5 hours
✔✔How is the class of the bridge determined? - ✔✔By the type of vehicles it must carry
✔✔How many rocking rollers are needed for a 150-foot TS bridge on the near and far
banks? - ✔✔4 for the near bank, and 2 for the far bank
✔✔What is the safety setback on an unprepared abutment with a bank height 7 feet? -
✔✔10.5 ft
