Quarter-turn stair

Escalier quart tournant

Two flights at right angles on a square landing: an L that fits a room's corner, the landing a pause half way.

Id: stairs.quarter_turn
Level: Piece: One product: a chair, a bed, a base cabinet.
Category: stairs.turning
Rooms: -
Sectors: ResidentialOfficeHospitalityHealthcareEducation
IFC: IfcStair.QUARTER_TURN_STAIR
Mounted: floor
Views: Plan, front (projected from the 3D), side (projected from the 3D), back (projected from the 3D), 3D
Status: placeholder, version 1
License: CC0-1.0

Parameters

Every view and the 3D are worked out from these. Ranges are the market's or the knowledge base's.

Name	Default	Range	Note
height	2.8 m	2.2 – 4.2, by 0.01	set by the storeythe floor to floor height it climbs
width	0.9 m	0.7 – 1.8, by 0.01	the flight's width
going	0.27 m	0.22 – 0.32, by 0.005	each tread's going, nosing to nosing
turn	0	0, 1	0 it turns right at the landing, 1 left
open	0	0, 1	0 solid (masonry or closed risers), 1 open treads on stringers
rail	1	0, 1, 2	handrails: 0 none (walls both sides), 1 on its right, 2 both sides

The sizes it is sold or built in, by the names the trade uses.