Finishing elements and comfort
Stairs

Railings, balustrades and handrails are the elements of a guardrail designed to prevent falls into a possible void. Some countries, such as the Federal Republic of Germany, prohibit days when the fall can continue unimpeded to the ground: it's brutal, but guardrail standards are rigorous, which is reasonable (NF P 01-012 ); fortunately, the variety of possible designs remains almost infinite, subject to everyone's control over the legal text, the essence of which can be summed up in the figure 16.

The handrail, guide and support, must be parallel to the...