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.
According to standard postal service codes, a mailbox should not sit any higher than 45 inches from street level. Place the post in the hole. Level it and attach two support beams at the center to keep the post standing up straight. Place one at the side of the post, and then add another to the back. This will ensure the post does not move while pouring the concrete and it remains level while the concrete is drying. Pour the dry concrete straight into the hole leaving 3 to 4 inches of space from the top of the hole.