TABLE 3-19. Rule 3 - DS 1 thru 12 Bay

TM-5-5420-212-10-1 Improved Flaot Bridge Consisting of: Transporter Interior Bay Ramp Bay Manual
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ARMY TM 5-5420-212-10-1 MARINE CORPS TM 08676A-10/1-1 o. Rule 3 Raise both the FRB and RRB by 0.69 m as follows. Both roller beams are in the high position. (1) Raise both the FRB and RRB by 0.69 m to increase nose clearance (N) [Table 3-19, column (o)] and tail clearance (T) [Table 3-19, column (p)]. N RULE 3 = N RULE 2 + 0.69 m T RULE 3 = Value obtained from Table 3-19, column (p). (2) If N Rule 3 is not greater than H and T Rule 3 is greater than G, proceed to Rule 4a., Table 3-20, column (q). (3) If N Rule 3 is greater than H and T Rule 3 is not greater than G, proceed to Rule 4b., Table 3-20, column (r). (4) If N Rule 3 is greater than H and T Rule 3 is greater than G, the bridge has adequate nose and tail clearance for launching, proceed to loads required. TABLE 3-19. Rule 3 - DS 1 thru 12 Bay Raise FRB & RRB to high position (increase N and T by 0.69 m) 2E + No. of Bays N (o) T (p) 1-4 N Rule3 = 1.24 5-7 N Rule 2 + 1.21 8-10 0.69 m 1.15 11-12 1.09 p. Rule 4a Lower RRB to low position (FRB is in high position).If there is ample tail clearance, some increase in N can be obtained by keeping the FRB in its highest position and lowering the FRB to its lowest position. The mathematical equation for this process is shown under Table 3-20, column (q). N Rule 4a. = N Rule 3 + value N calculated from the equation shown under Table 3-20, column (q). q. Rule 4b Lower FRB to low position (RRB is in high position). If there is ample nose clearance, some increase in T can be obtained by keeping the RRB in its highest position and lowering the FRB to its lowest position. The mathematical equation for this process is shown under Table 3-20 column (r). T Rule 4b. = T Rule 3 + value T calculated from the equation shown under Table 3-20, column (r). 3-32

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