Ecocentric = an adjective used to describe a state of mind; of a person, or a social group, who is, or are: Committed to Making a Positive Contribution to The Survival of Mankind And The Eco-System Which Supports Us.
Effects. When fast-setting concrete mix is used, setting takes place in 20 to 40 minutes. Typically, you can apply some weight to the posts after 4 hours, but it's a good idea to wait at least 24 hours before resuming fence construction.
The post is then set with the aid of a rock bar. If the gravel is properly compressed the post should never waver. I have some fences (with original posts) still standing after 25 - 30 years. I would like to point out that I have noted that every fence (in concrete) is rotted out within 5 to 10 years. Dig your hole to a depth appropriate for the height of the post. 2  Place a pre-cast concrete biscuit (block). 3  It should be a couple inches thick and can be square or round, but the round ones usually fit the hole more easily. 4  Place your post in the hole and backfill with dirt.