ARMY   TM   5-5420-212-10-1 MARINE CORPS TM 08676A-10/1-1 TABLE  3-11. SS Bridges 9 thru 12 Bays 9 Thru 12 Bays (from  below) Choose  a  LNCG  setting,  RB  set-up,  and  packing  (if  required) to give N > H LNCG RB  set-up Setting &  Packing (from  cols  g  through  I  &  Note  3) Dimension N above/below line through ground at RB and 0 when rear BSB is on ground. The RB is set-up on BP or BP and DU, and LNCG is on setting No. 4, No. 2, or No. 1. LNCG Settings No. 4 No. 2 No. 1 Black Black Black BP BP+DU BP BP+DU BP BP+DU Only O n l y Only ** No. of Bays (g) (h) (i) (j) (k) (i) 9 -0.76 0.15 0.61 1.37 1.83 2.59 10 -0.99 -0.38 0.38 0.9 1.60 2.21 11 -1.37 -0.84 0.15 0.71 1.83 2.67 12 -2.13 -1.37 -0.46 0.31 1.07 1.83 NOTES: 1. An extra 75 mm of clearance can be obtained by lifting the nose to take out the pin sag. Where levels are esti- mated, this should not be taken into account during the design, but left to compensate for any errors in calculating the value of H (for bridges 4 through 8 bays). 2. An  extra  0.6  m  of  clearance  can  be  obtained  by  lifting  the  nose  to  take  out  the  pin  sag  (for  bridges  9  through  12 bays). 3. Any additional packing under the RB will increase the vertical interval N by three times the thickness of the pack- ing (e.g., if the packing is 75 mm thick, N will be increased by 225 mm). 4. The  table  incorporates  an  allowance  to  ensure  that  the  nose  clears  the  LR  when  it  is  positioned  230  mm  in  front of the F peg. 5. Height of the roller beam on baseplate only is 0.43 m. Height of the baseplate and deck unit is 0.60 m. ** Plus 7.62 cm of timber packing between BP and DU. 3-24 Change  2