A prefabricated four-seat latrine box is shown in figure 2-15. This box can be collapsed for shipment, as shown in figure 2-16.

A plan view of an eight-seat field-type latrine is shown in figure 2-17. As shown, the eight-seat field- type latrine can be expanded to a 1 B-seat latrine. With this type of latrine, two 4-seat boxes are placed to straddle a 3- by 7-foot pit. After the pit is dug and before the boxes are placed, a 4-foot-wide margin around the pit is excavated to a depth of 6 inches, as shown in figure 2-18. A layer of oil-soaked burlap is laid in this excavation; then the excavated earth is soaked with oil, replaced, and tamped down to keep out surface water. Two 4-foot 6-inch trough-type urinals are furnished with the eight-seat latrine. Each urinal is mounted in a frame constructed as shown in figure 2-19. A 2-inch urinal drainpipe leads from the downpipe on each urinal to a 6- by 6-foot urinal SEEPAGE PIT, located as shown in figure 2-l 9. The seepage pit is constructed as shown in figure 2-20.

A four-hole burnout field-type latrine is used at most advanced or temporary bases. The burnout latrine is kept in an orderly condition (daily) by camp maintenance personnel or by the sanitation crew assigned. Two people can effectively and efficiently dispose of the excremental waste of 500 people. There are two easy ways of maintaining the burnout latrine. They are as follows: by spreading lime over the waste material or by using diesel fuel to burn the waste material. The burning pit for the waste material should be located so resulting smoke, fumes, odors, and blowing ashes do not interfere with operations or the health and general well-being of personnel.

Figure 2-15. - Prefabricated four-seat latrine box.