Studies on Pasture Facilities in the Snowy Area : III. The factors affecting the tipping of corner posts

Abstract

It is seemed that the cattle may escape from where the tipped corner posts, one of the pasture fence defects caused by the snow settling load in the snowy area, slackened the barbed wire. The purpose of this investigation is to make a study on the factors affecting the tipping of corner posts, from the standpoints of structural changes of pasture fences with the years and various conditions of soil bearing capacity especially. The results obtained are as follows ; 1) The small soil hardness showed a tendency to be tipped corner posts near the heaped stumps remarkably (Fig.5). 2) It was confirmed that the tipping of corner posts made the slack of the barbed wire greater as the plane angle in the corner fences became acute gradually. It is necessary to pay attention to the method of hanging the wire on the posts or the pasture fence maintenance because the tipping of corner posts was caused mainly by the action of the snow settling load to the wire (Fig.7). 3) Although the investigated 13 corners of the pasture fences were not sufficient number, the extended angle's rate per year of plane angle in the corner fences, stood in high correlation with the tipping of corner posts, was concerned with the plane angle of the corner fences, the cone index as a soil bearing capacity and the snow depth mutually. 4) It was supposed that the tipping corner posts was affected mutually by the plane angle where the corner fences were installed, the soil bearing capacity and the snow depth.