How To Prevent Strainer Posts From Rising

New Zealand Journal of Agriculture, Volume 63, Issue 2, 15 August 1941, Page 145

How To Prevent Strainer Posts From Rising

THE puli'of the wires on a strainer stayed in the usual way will tend to raise the post in the ground, because the stay will prevent it . from moving forward save by rising, writes a correspondent. ' The part of the post against which the stay rests will, if it moves at all, move forward in a segment of a circle, having for its radius the length of the stay. This upward - thrust of the stay as ordinarily used can ’be effectually neutralised by use of a second stay, held, against the 'post at the ground level,, and sloping downward toward the post in place, of upward. The length : of the second stay is of no importance, but it is essential to have it securely “footed,” and it must be so secured against the post, either by

shallow mortising or by driving a few staples into the post immediately below the stay, as to prevent the post from rising without lifting the end of the stay with it. As will be seen from the accompanying diagram, just as the one stay makes it impossible for the post to. move forward without rising, so does the. other make it impossible for it to move forward without falling or going further into the ground. The action of each

stay neutralises that of the other, and the post will not move. Stayed in this way, an ordinary post will serve as a strainer, and, no matter how slushy the ground may be beneath the surface, so long as the surface is sufficiently solid to hold the stay foot-pieces, the post.' will stand. It will, in fact, stand even if the hole is not filled. with earth.

-J. JOHNSTONE,

Manurewa,

Auckland.