Egnyte is a company that provides software for enterprise file synchronization and sharing. The technology can store files in a companyâs existing data center, as well as cloud computing storage.
Best Answer: 600mm is the minimum width only if the stair allows access to one room (normally an attic stair) If it is more than one room then the minimum width is 840mm, but 860 is more standard. These sizes ignore intrusions like stringers, skirting and newels. So from wall to handrail.
Calculation of spiral stairs. 1  Enter the required dimensions. H - The height of the stairs. 2  The length of steps in the spiral staircases should not be less than 80 cm. Step width in the central part should not be less than 20-25 cm at the widest part - nor more than 40 cm. Spiral staircase step height can be greater than the height recommended for mid-flight of stairs.