Does anyone know the requirements of storing Gas bottles which are in safety cages?

Do they need to be away from buildings and on concrete pads?

Iv had alook on the HSE website and it says ;

Cylinders should be stored preferably in the open air on a concrete or load-bearing surface. Flammable liquids, combustible, corrosive, oxidising materials, toxic materials or compressed gas cylinders should be kept separate from LPG containers in general. Containers should be stored with their valves uppermost. The maximum size of any stack should not exceed 30,000 kg. For storage indoors, no more than 5000 kg may be stored in each purpose designed building compartment and a maximum of five compartments may exist in a single building.