Concrete Anchor Bolts

[N3BP]

Fellas, I have this bench vice stand a friend fabbed for me a while back. I've been mulling around where to install it for four years now. I hate the idea of having to drill through my concrete floor. The best place for it where it isn't in my way and still functional is right next to the two-post lift anchor point.

My question/concern is drilling a new hole in proximity to an existing anchor wedge. I'd like to install the stand such that the distance between the new hole I have to drill is 4 1/2'' center to center of the existing wedge anchor. The two post lift anchor is 1/2'' diameter, and the vice stand will be 5/8'' diameter. The slab is supposed to be 6'' thick in this area.

Am I worrying for nothing, or is there a concern with the concrete cracking between the two holes because they are too close?

Thanks!

 

[85Hokie]

This may sound crazy - unless you are going to be beating the hell out of something IN THAT vise - find an old rim, 15" 17" or whatever, drill some holes in the plate below and mount on the rim.

Stable base - easily moved too.

Even if you have a time mounted on the rim - it will still work well.

Just a thought.

 

[chim]

I'd use drop-in anchors and not worry.

https://www.menards.com/main/p-1642874302976862.htm?utm_source=google&utm_medium=organic-shopping&utm_content=2327998&utm_campaign=Red+Head

 

[Sawdust&Shavings]

Fellas, I have this bench vice stand a friend fabbed for me a while back. I've been mulling around where to install it for four years now. I hate the idea of having to drill through my concrete floor. The best place for it where it isn't in my way and still functional is right next to the two-post lift anchor point.

My question/concern is drilling a new hole in proximity to an existing anchor wedge. I'd like to install the stand such that the distance between the new hole I have to drill is 4 1/2'' center to center of the existing wedge anchor. The two post lift anchor is 1/2'' diameter, and the vice stand will be 5/8'' diameter. The slab is supposed to be 6'' thick in this area.

Am I worrying for nothing, or is there a concern with the concrete cracking between the two holes because they are too close?

Thanks!

In my shop EVERYTHING is on a mobile base…to include my vise…as I buy more tools my layout significantly changes. If your tool base is big enough and your casters are double lock the tool never moves. I make bases out of two 3/4” layers of plywood with casters from ROCKLER or LEE VALLEY and I couldn’t be happier.., my wood shop is 960 sqft but without casters on every tool I’d need at least 1600sqft to fit all the tools I own today and by tomorrow I’d run out it space.
He who dies with the most tools and clamps wins

 

[Ping]

Or, you could pull the 2 nuts from the 2 post lift closest to the vise base and add a plate on top of the post lift base bridging across to the vise base. Just another thought to keep from drilling more holes in the concrete.