Figure 10-12. - Typical fender installations.

acceptable substitute for the AP5 can be field-fabricated, if necessary, from an API. To do so, remove the holes from the APl by cutting 3" inside the two edges measuring 18 1/4", and halve the resulting 18 1/4" x 5" plate to produce two 9 1/8" x 5" plates; both can be used as end plates.

AP6 CHAFING PLATE: The AP6 is a steel plate. 10" square, with two opposite edges beveled. Welded the sides of causeway sections, the AP6 protects the causeway from damage due to sliding contact. It is frequently used between side-lapped causeway sections. Because the AP6 is a nonstock item, it should be fabricated in the field when it is required. Dimensions are not critical; halves of an APl or an AP7 plate will serve as chafing plates when properly beveled.

AP7 GUSSET PLATE: The AP7 is a steel plate to cut in the form of a 9" high trapezoid. The parallel