Staircase Terminology
Physical Components that make up a staircase:
1
Newel Cap
Sits on top of the newel post for decorative effect.
2
Handrail
Follows the staircase up, and is where people place their hands. Is grooved out for spindles to sit into.
3
Newel Post
A substantial post that the handrail goes into on the staircase. Usually 90x90mm and can be either left at full height, or cut short for a newel turning to fit into.
4
Treads
Horizontal timber, usually 22mm in thickness. However, they are made thicker for open riser stairs.
5
Spindle
Also known as balusters, these go between the handrail and base rail to stop you falling through. These are usually 41x41 mm and are either square (sometimes fluted), or turned.
6
String
Routed out timber and usually 220mm in width and 32mm thick. The treads and risers are slotted in and the top section can be cut away to create a cut string stair case.
7
Bottomrail
Sits on top of the string or landing and is grooved out for spindles to sit into.
8
Risers
Vertical timber, usually 9mm thick. These are not mandatory and when missing the stair is called an open riser staircase.