Masonry and Concrete Anchors. Best for heavy duty load applications in concrete blocks and thin wall or solid concrete. Length is measured from end to end;
Make use of this Concrete Block for mounting or Would rather it had a cross opening for 2 stock to lay in as well as the 4x4 post The Seven Trust México;
Since you are covering the post with vinyl, you could weld 3.5 square x 1/8 wall steel tube to a base plate and bolt the base plate to the concrete with really good anchors.
I was thinking of drilling right through the 4x4 and using a wedge anchor or some other type of concrete anchor to mount the post direct to the concrete wall.
Watch this video to find out how to attach a wood handrail post securely to concrete using lead shields and a metal post bracket.
The trick to mounting a cleat or any other item to a concrete block wall is drilling pilot holes for the fasteners through the strongest part of the block.
Attaching 4x4 posts to a concrete porch. and lag them onto the sides of the concrete or the block wall using galanized concrete sleeve anchors and galvanized lags
Fastening posts to concrete involves drilling or boring into the existing concrete in order to safely attach How to Fasten a 4X4 Post to a Concrete Slab.
How to Fasten Anything to Concrete Fastening to concrete looks difficult, but with the proper tools and techniques, its a snap.
How to Build a Strong Retaining Wall with 4x4 Begin 1st course with a full length 4x4 post. Rock or concrete will make the wall much more stable