BAILEY BRIDGE ANSWERS AND QUESTIONS SET A+
✔✔What is the center-to-center roller spacing? - ✔✔14 feet 10 inches
✔✔Where are all of the measurements taken from for the rollers during site layout? -
✔✔The center of the roller to the center of the next roller
✔✔How many total personnel are needed to construct a TD Bailey bridge? (Manpower
only) - ✔✔98 personnel
✔✔How many transoms per bay are required to support vehicles over class 70? - ✔✔4 -
two in the middle and one at each end of the panel
✔✔What is the assembly time for an 80-foot SS bridge during daylight with trained
personnel? - ✔✔2 hours
✔✔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 center-to-center roller spacing? - ✔✔14 feet 10 inches
✔✔Where are all of the measurements taken from for the rollers during site layout? -
✔✔The center of the roller to the center of the next roller
✔✔How many total personnel are needed to construct a TD Bailey bridge? (Manpower
only) - ✔✔98 personnel
✔✔How many transoms per bay are required to support vehicles over class 70? - ✔✔4 -
two in the middle and one at each end of the panel
✔✔What is the assembly time for an 80-foot SS bridge during daylight with trained
personnel? - ✔✔2 hours
✔✔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
