Fences and Gates - Fence posts

Just a quick question. I'm installing a vinyl privacy fence and just wondering if one sack of fast setting concrete is enough for each post. Holes are about 34" deep

thank you:D

What is the diameter of the holes and the size of the posts? The volume of the hole minus the volume of the post is the amount of volume you need to fill.

In most cases, you should back fill your soil , tamp your post and then it would be determined by the steadyness of the post of how much cement you should throw into the hole surrounding the post. For the most part if you are using a 5x5 PVC post you would probably have a hole that is around 12-14 inches in diameter. I would say that on the average you would need more than 1 80 lb bag of concrete per post. Especially so if the fence is higher than 4 feet. Even more so if that fence is solid board that is subjected to wind.

34 inches down is good.. assuming that depth, I would think you would be using about 1 1/2 bags per post on the average.
Much more on the gate posts.

Good luck.

Gregs Fence~

SULIS - Sustainable Urban Landscape Information Series: U of MN. (http://www.sustland.umn.edu/implement/deck_footings.html)

How Aggregates Prevent Frost Heave (http://rockproducts.com/mag/rock_aggregates_prevent_frost/)

Be safe, G

Some time about a year or so ago I posted a general post to all. In that post I suggested that it would be better for the people that are reading and giving advice if we knew where the people who are posting live.

In the post that I answered the poster was from N.E. Tennessee. Before answering that post I checked the typical winter climate in that area.
The on line source I read into suggested that N.E. Tennessee's typical winter was between 30 and 49 degree's . With that I felt that if any winter was not typically lower than 30 degree's, that area would be less subjected to having anything less than just a few inches of a frost line.

I reside in Central NJ. I have also lived in Long Island NY. Both areas having a typical winter of anywhere between the lower teens and the upper 30's . In both areas I have installed fencing throughout the winter. And in both areas the deepest frost line on one of the coldest winters I had ever encountered was about 15 inches.

Granted, You posting that website was very interesting to read. I will continue to utilize that site to explain why stone agregate should be used in other climates where it is applicable.

Now on the flip note to this, If ever I gave someone bad advice I do hope I would be forgiven . Most times I do my best in giving advice based on everyone's individual circumstances. Sometimes I just slip up. It happens. But certainly it is never intentional.

Thanks for the post... Thanks for the details on aggregate as well as the frost line in MN.....

I sure would hate to dig 300 foot of fencing where you live.... I would have to buy taller post hole diggers ! lol