FM 3-19.4 - Army Electronic Publications & Forms - U.S. Army

193
B
180
150
140
120
Figure I-6. Determine the Slope with a Map
FM 3-19.4
100
0 m 1,000 m 2,000 m 3,000 m 4,000 m 5,000 m
Find the difference in elevation (Vd )
Spot elevation B = 193 m
Spot elevation A = 100 m
Differenceinelevation(Vd ) = 93 m
Find the horizontal distance (Hd )
Road distance A to B (use a piece of paper and a graphic
scale as shown in FM 21-26) = 3,720 m
Use the percent-of-slope formula.
Vd Hd ----- ×
100
93
= -------------- × 100
3, 720
+ 2.5 percent
Route Classification and Signing System I-19
A