|Posted on April 27, 2016 at 2:00 PM|
Being a Fence Contractor on San Juan Islands can have it ups and downs. Let’s start with the topography, mostly rocky or hard pan and never flat or level. When building a wood fence, this can be easily cured by using the”step method”. But using a rigid wire like”chain link or “welded wire” it becomes much more difficult.
Pole or post placement is very important when building a wire fence on uneven ground. Setting a post, pole or an H brace at the highest point of a hill gives you a pivot point to start the downward run of the fence and the same method is used in a valley to start your uphill run.
The other problem we encounter on San Juan Island is that we are basically sitting on a large rock surrounded by water. It is really hard to set a fence post in solid rock, no is almost imposable. I started out renting a jack hammer, but found that it was heavy and did not work well. I looked on line to find a rock hammer that was both light and powerful. This rock hammer has made my life so much easier.
I like a straight fence with even spacing on poles and posts. Some fences lines I have seen on this island look like a map of the Snake River. It only takes a few minutes to stake out and string, a fence line. Setting each pole and post to a string line will make a beautiful, straight inline fence.
When digging a post hole it must be 25% to 30% of the length of the post in depth. So the typical 6 foot fence should have 8 foot posts set in at least 2 foot hole, filled with concrete. The post hole diameter is determined by the size of the post so just double the size of the pole. Example 4x4 post gets a 8 inch wide hole 6x6 pole gets a 12 inch hole and so on.