Bailey Bridge Exam

Bailey Bridge Exam Given a 210-foot TT bridge. What is the position of launching-nose links? - 30 feet & 40 feet How many personnel does the routine repair detail consists of? - 6 How many personnel does the maintenance party usually consist of for important bridges subject to enemy action? - The entire assembly crew What is the required safety setback on an unprepared abutment if the bank height is 6 feet? - 1.5 x 6 feet = 9 feet Given a 140-foot TS bridge with grillage type 1 on both the near shore (NS) and far shore (FS). The far-bank seat is level with the near-bank seat. What is the position of the launching-nose links? - 20 feet & 40 feet How is the initial bridge length determined? - By adding the width of the gap, the safety setbacks, and the roller clearances What is the purpose of construction rollers? - Aid in inserting the launching-nose links and provide clearance between the links and the ground How many NCOs and enlisted members are on the transom crew to construct a TT Bailey bridge? - 2 NCOs and 28 enlisted members What are the different types of stringers? - Plain and Button How many unloading parties are needed for a 100-foot DS bridge? - 5 unloading parties How far should the extra set of plain rollers (called construction rollers) be placed temporarily behind the rocking rollers when determining longitudinal spacing? - 12 1⁄2 feet 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 What is the longitudinal spacing between plain rollers? - 25ft What is the maximum lift obtainable using launching-nose links? - 94 1/2 inches 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