Figure 10-5. - End-to-end connections for P5M and P5F pontoons.

Structural steel ASSEMBLY ANGLES in varying lengths are used to connect the P-series pontoons into stings. Each is suitable for assembling a definite number of pontoons and designated as E-series angles. The angles are positioned to each of the four edges of a row of pontoons. Various types of assembly angles

Figure 10-6. - AII E516 assembly angle.

are available. Figure 10-6 shows an ES 16 assembly angle. Figure 10-7 shows assembly angles E 16L and E 26L.

Angles are supplied in several lengths, so strings can be made up with a minimum number of welded joints, and they are designed so these welds fall midway along the edges of each pontoon, rather than between pontoons where stress is greatest. Each angle has one or two cross-sectional sizes, 6" x 6" x 1/2" thick or 8" x 8" x 1/2" thick. Angles with 8" legs are used to replace 6 x6 's at the center of strings 18 to 24 pontoons long, and strings of 30 pontoons have 8" angles throughout to resist the extra stress that their weight imposes. Regardless of dimensions, however, each P-series angle falls into one of two types: basic or end-condition angles. Basic angles are those angles used throughout the body of a structure. Their application is not restricted to top, bottom, left, or right

Figure 10-7. - Assembly angles E 16L and E 26L.