ARMY TM 5-5420-212-10-1
MARINE CORPS TM 08676A-10/1-1
FIGURE 3-12 DOUBLE STORY-DISTANCE R, T, G, H, & N
m.
Rule 1
Choose an LNCG setting from Table 2-14, columns (h), (i), or (j) that ensures that the value of D from Table 3-17,
column (g) (from FRB/F line to the point of maximum deflection) is greater than the depth of C (from FRB/F line to WL).
(1)
If both bank heights are greater than 0.6 m above the waterline, go to Rule 2.
(2)
If either or both bank heights are less than 0.6 m from the waterline, choose an LNCG setting from
column (h), (i) or (j) so that D is greater than C to avoid immersion in water, and go to Rule 2
(3)
If D is greater than C, go to Rule 2.
(4)
If D is not greater than C and the water is not flowing, go to Rule 2.
(5)
If D is not greater than C and immersion in water is less than 0.3 m and the current velocity is less than 5
meters per second (mps), it is not essential to adjust the LNCG setting. Therefore, go to Rule 2.
(6)
If D is not greater than C and the current velocity is greater than 5 mps, another site must be chosen
3-30
FIGURE 3-11 DOUBLE STORY-DISTANCE D, W & C
