anchoring 4x4 to concrete slab


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Old 04-22-02, 12:43 PM
matt's Avatar
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anchoring 4x4 to concrete slab

I'm going to build a 3' railing on my concrete front porch using 4x4's (CCA treated) for the posts. What is the best way to anchor them (there will be 5 total) to the concrete?
 
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Old 04-22-02, 06:15 PM
MeffaDawg
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Simpson makes a 4x4 connector you can find at Home Depot, or most other lumber yards. I built a Pergola at my brothers and we used them to attach to a slab.

The connector has holes on the bottom to accomodate screws or anchors. I put the connector where I wanted it, marked thru the holes and predrilled using a masonry bit. I bought some self-tapping masonry screws and they worked great.

The connector I used kept the 4x4 about 3/4" off the ground. I mitered some left over 1x6's and capped around the bottoms to clean it up and hide the connectors. I have to say it came out great and is very solid.
 
 

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