ARMY TM 5-5420-212-10-1 MARINE CORPS TM 08676A-10/1-1 o. Rule 3a Lower RRB to increase nose lift (N), (CRB is in the high position). If there is ample tail clearance, some increase in N   can   be   obtained   by   keeping   the   CRB   in   its   highest   position   and   lowering   the   RRB   to   its   lowest   position.   The mathematical  equation  for  this  process  is  shown  under  Table  3-28,  column  (m).  N  Rule  3a.  -  N  Rule  2  +  Value  N calculated from the equation shown under Table 3-28, column (m). p. Rule 3b Lower CRB to increase tail clearance (T), (RRB is in the high position).  If  there  is  ample  nose  clearance,  some increase in T can be obtained by keeping the RRB in the highest position and lowering the CRB to its lowest position. The mathematical equation for this process is shown under Table 3-28, column (n). T Rule 3b. - T Rule 2 + Value T calculated from the equation shown under Table 3-28, column (n). Table 3-28, column (n). Table 3-28. Rule 3a and 3b - DS 13-22 Bay w/o LRS Rule 3a. Rule 3b. Lowering RRB to increase N Lowering CRB to increase T 2E + # OF BAYS N (m) T (n) 13 1.9 (0.82-G) 0.2 (2.93H) 14 1.9 (0.79-G) 0.2 (2.90H) 15 1.9 (0.76-G) 0.2 (2.80H) 16 1.9 (0.72-G) 0.2 (2.68H) 17 1.9 (0.69-G) 0.2 (2.94H) 18 1.9 (0.66-G) 0.2 (2.79H) 19 1.9 (0.63-G) 0.2 (1.97H) 20 1.9 (0.63-G) 0.2 (1.86H) 21 1.9 (0.60-G) 0.2 (1.42H) 22 1.9 (0.57-G) 0.2 (1.29H) q. Loads required From Table 3-29, determine the truck and trailer loads required for the bridge. Table 3-29. MGB Pallets DS 13-22 Bay w/o LRS No. of Bays Pallet Type 13-15 16-18 19-21 22 Erection * 1 1 1 1 Bridge 8 9 10 11 Total 9 10 11 12 * Increase quantity by one (1) if one pallet is loaded with additional erection components required from the LRS. Increase quantity by two (2) if complete LRS is used to obtain additional erection components required. 3-40