Figure 10-4. Tank measuring technique

TM 5-5430-209-12

c. Depth or Tank Height Measurement. Depth

d. Circumference. Circumference is the circular

measurements are usually taken on the outside of the

distance around the outside of the tank.

10-9. Measurement Techniques

tank and then compared to measurements taken inside

the tank through the gage hatch in order to determine if

a. General.

Tank strapping encompasses

cement or other material has been placed on the tank

measuring the depth, circumference, thickness of tank

bottom. If cement is present on the bottom, measure

walls, deadwood, and pipe connections.

and record the depth at three places as illustrated in

b. Deadwood Measurement. Measure and record

figure 10-4. Using the three measurements, compute

deadwood length, breadth, and thickness in order to

the average depth of the tank. Average depth should be

compute the volume of fluid that will be displaced by

recorded in feet, tenths, and hundredths.

any object within the tank shell after it is filled and to

compute the added volume outside the shell due to

Figure 10-4. Tank measuring technique

d. Circumference Measurements. Circumference

shown in figure 10-4. Since these tanks normally have

measurements are taken on each ring at points located

8 foot rings. measurements would be taken at 2, 6, 10,

by measuring down from the top and up from the bottom

14. 18 and 22 feet above the tank bottom. If bolts

of each ring 1/4 the height of the ring as

prevent the close contact of the tape with the

10-6