Plates exposed to compression,

cb = 2 diam., df = 1½ diam.

Plates exposed to extension,

cb = 2½ diam., df = 2 diam.

the diameter being that of the rivet.

The distance at right angles to the force has already been given.

241. If we knew the lateral adhesion of rolled plates, that is, the resistance of the fibres to sliding horizontally past each other; we should determine the distance of rivets in the direction of tension as follows:—

Let R, equal the resistance per unit of area for detrusion or shearing, R′ the lateral adhesion of rolled plates, and we should have

R × a = R′ × (2 d × t);

whence d = R × a
2R′ × t;