constructing fence--on concrete driveway

[dsmoot78]

Trying to decide just how to go about this. I am wanting to fence off the back yard and have direct access from the back door which sits on what use to be the driveway as the tuck under garage (where the door is) was converted to a basement room. Approx. 15-20 feet of the fence will be on the concrete and the rest will be in the back yard. I wondered if there was a way to anchor fenceposts to the concrete driveway without tearing up part of the driveway to place the fenceposts? Any help with this would be great.

[doyle]

Call some of your local concrete contractors and see if they have access to a hole saw. You should be able to have someone come drill you a few holes relatively cheaply. You may even be able to rent one in your area. It would sure make the posts a lot sturdier to have them cemented in the ground rather than just bolted to the top of the concrete.

[Rich]

Excellent way to do it doyle.. dsmoot - make sure to use something like rockite to anchor the posts into the concrete. It's much stronger than regular concrete and doesn't need an binding agent to bind to existing concrete - clean the hole out after boring.

[Tom R]

I was thinking more on the line of cutting out 'squares' with a cutoff saw/jackhammer. I didn't know there was such an 'amimal' as a concrete holesaw. How big is it? What runs it? Is it diamond-tipped? Does it come in the diameter of my ex-wife? etc. -etc.

[doyle]

Not unless you have a really skinny gal! lol

The ones pictured here http://www.toolsdir.com/shopping/nprd.asp?ID=24&OVRAW=concrete%20hole%20saw&OVKEY=concrete%20hole%20saw&OVMTC=standard have a diameter of up to 8", but the one I saw them use on a tv show was 18". They cut out holes in a pool deck to plant some small trees.

[Tom R]

Damn, a tool I don't have - - you troublemaker. :shock: 8) :lol:

[mjpliv]

Have a look in the yellow pages for concrete core drilling. Stick with the round holes, the square ones will create four stress points for future cracking to start. I have seen 16" holes drilled through concrete walls so a fence post hole should be no problem