ARMY TM 5-5420-212-10-1 MARINE CORPS TM 08676A-10/1-1 TABLE 6-4.  Building and Boom Table - 2E + 18 through 2E + 22 bay Double Story (w/o LRS) (Normal Site) Bridge ft 138 144 150 156 162 Length m 42.1 43.9 45.7 47.6 49.4 2E + No of Bays 18 19 20 21 22 L/Nose 8N1 6N1+3N2 6N1+3N2 6N1+3N2 6N1+3N2 Counterweight [20D + 6C] [20D + 6C] [20D + 6C] [20D + 6C] Build E + 1 with RRB at: 1p2 1p2 1p2 1p2 1p2 Add Note a Note a Note a Note a Note a 2,3 2,3 2,3 2,3 2,3 7N1*,4 6N1*,4 6N1’*,4 6N1*,4 6N1*,4 5 5 5 5 5 8N1**,6 3N2**,6 3N2**,6 3N2**,6 3N2**,6 (CG) (Ap2) (Bp2) (Bp2) (Bp2) (Bp2) Boom 3p0 2p4 2p4 2p4 2p4 Add 7 thru 9 7 thru 9 7 thru 9 7 thru 9 7 thru 9 (CG) (2p3) (2p0) (2p0) (2p0) (2p0) Boom 4p5 4p2 4p2 4p2 4p2 Add 10+11+12 10 thru 13 10 thru 13 10 thru 13 10 thru 13 (CG) (3p7) (4p0) (4p0) (4p0) (4p0) Boom 10p7 11p0 11p0 11p0 11p0 Add 13 thru 18 14 thru 19 14 thru 20 14 thru 21 14 thru 22 E E+[20D+6C] E+[20D+6C] E+[20D+6C] E+[20D+6C] (CG) (8p4) (9p0) (9p7) (10p3) (10p7) Launch (8p4) (9p0) (9p7) (10p3) (10p7) Position LRP LZ 5 LZ 2 LZ 4 LZ 5 LZ 6 Note b Note b Note b Note b Note b Launch to 15p5 16p5 17p5 18p5 19p5 Remove FRB,RRB FRB,RRB FRB,RRB FRB,RRB FRB,RRB Complete by Note c,d Note c,d Note c,d Note c,d Note c,d NOTES: a. Add LNCG posts, LNCG and nose roller. b. Check that LR is under LZ given or higher.  Remove nose sections as they pass LRP, observing minimum 5 ft (1.5 m) overhang.  Leave last three nose sections in place until far bank end of bridge has been lowered to ground. c. Launch until far bank end of bridge is 9 in (23 cm) from LRP, or end of ETP overhangs CRB by 1.5 ft (0.5 m). d. Put bridge on ground. * Add given length of launching nose with LRP secured with tie down strap. ** Nose completed by adding 8th LNH or 6 LNH required for 3N2 (double-story nose). [ ] Counterweight. ( ) Center of gravity. 6-6