Probably not the right forum for your post - you need a more specialised group such as the Royal Instuitute of British Architects (RIBA)

Under the Construction Products Regulation are several european standards to evaluate different types of glass but as yours sounds like a bespoke one-off construct it needs specialist advice

Any standard will be a manufacturing standard and will describe what standard tests the item will need to pass. Those tests are based on certain assumptions of what risks the item will have to cope with. I think what the poster is asking about is what assumptions they should be making about this item. For example they say that the object will be in a retail environment but what does that actually mean. Will it be an a display area separate from the public and employees or will it be placed somewhere that is accessible; where public can lay their hands on it and where it might pose a risk? See http://www.mirror.co.uk/news/uk-news/hugo-boss-fined-12-million-6382709 for what I mean.