Stairs

The main components of a staircase are:

• newel - one of the main posts supporting the handrail
• string or stringer - one of the parallel boards supporting the treads
• handrail - the horizontal or sloping rail supported by the newels and balusters
• baluster - one of the minor posts supporting the handrail
• balustrade - a set of balusters
• tread - the horizontal part of a step
• riser - the vertical part of a step
• nosing - leading edge of a tread
• landing - an enlarged tread at a bend in the staircase
• winder - a tapered step which turns the staircase

Edwardian quarter-turn staircase