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jJim McLaughlin jJim McLaughlin is offline
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Default Sink posts how deep?

JoeSpareBedroom wrote:
I need to install three 4x4 posts to support grape vines. There'll be some
sort of wire stretched horizontally between the posts, as done at vineyards.
However, I'd prefer NOT to pour cement. Reason: This project could be a
total failure if the deer decide grape vines=salad. They ate my neighbor's
car last week, so anything's possible. So, if I'm using 8 foot posts, should
3 feet under the ground be sufficient?



I replaced some fence posts last fall. Pacific NW area, lots of rain,
relatively little freezing here on the vallry floor. Mountais are different.
They were 4" x 4" PT in concrete, about 20 - 25 years in the
ground, rotted through in the 2 - 4 inches immediately above the concrete.
Getting the concrete outwas a pain.

Had the use of a neighbor's clamshell / post hole digger. Dug the
hole 3 feet deep. Put in 1 foot of crushed gravel, tamped and packed.
Placed post 2 feet into hole, tamped and packed gravel into hole up
to surface. Have 6 feet of post above ground. Looks good and
is very sturdy. From what i've seen around here, concrete
and 4" x 4" wood posts just don't work well together.

YMMV.