Thank you for your reply.
Perhaps you missed the rationale of my question. An HOA has the right to have architectural
requirements and rules for "looks" of the neighborhood and when you own anything in an HOA area they have the right to reject visible alterations to the building within the HOA even if they are legal by law. Them denying your request because they do not like the looks would not make them liable for someone driving through the store and you telling them you would make them liable of course you know would not make them liable.
So, if they do not like the looks of what you propose, you have to look for an alternative solution. What I was referring to was really concrete barriers that are designed in a decorative manner but built to prevent a vehicle from penetrating. They are constructed of concrete with rebar and would do the same thing as the 4' billiards you are looking to install. It was an alternative with a different look to do the same thing, which is why I posed my question that way, as I figured the HOA would not like the looks of the billiards you are suggesting as many of these HOA consider them unsightly, eyesores and many other descriptions, regardless of their functional purpose or if they meet city/county codes.
So, if the HOA will not approve as it not conforming to their HOA bylaws or architectural requirements, you would need to find another way.
If the billiards are not acceptable and they would not accept an alternative design as I suggested and they have nothing in their bylaws specifically prohibiting it, THEN you would have to file what is called a "declaratory judgment action" in the county court and you would have to argue that their denial was arbitrary and it was not based on any good cause and it is not specifically prohibited by the bylaws, so the board abused its discretion and the court will have to review the bylaws and rules and decide.
The alternative designs though could be what you need to protect your property and convince the HOA it is not bad looking for the HOA.