| A | B |
|---|
| Horse ,Carriage Stringer | 1. Beam that rests on other supports such as beams and joists. 2. Incline structural supports for stairs treads and risers. |
| Return | 1. Change in direction of a molding or wall; e.g. a corner mitered back into itself. 2. Part of the rope or line between a block and tackle. 3. Pipe in a heating system that returns water to heating source. |
| Total Run | 1. Horizontal distance from the face of the bottom riser to the face of the top riser. Used to determine unit runs in stair construction. 2. Horizontal distance from the outside of a wall to the intersection of roof rafters at the ridge in an unequal pitch roof. 3. Horizontal distance from the outside of a wall to the center of a structure in an equal pitch roof. Equal to one-half the span. |
| Tread | 1. Horizontal portion of a stairway including the nosing: a step. 2. High friction coating on a sheave. Used to minimize slippage of the belt. |
| Volute | 1. Spiral fitting at the bottom of a handrail. Used to join the straight section of a handrail to the newel post. 2. Spiral architectural ornament. |
| Rise or Total Rise | 1. Vertical distance for top of a wall to top of the roof ridge. See total rise (1). 2. Vertical distance between adjoining floors or landings in a stairway. 3. Vertical distance from the springing (lowest point of an arch) to the intrudes (highest point). 4. Vertical distance from the crown to the lowest point of the road. 5. Overall travel of an elevator. |
| Headroom | 1. Vertical distance from front and upper surface of a stair treads to the ceiling above. 2. Vertical distance from the floor to the bottom of a door jamb header. |
| Total Rise | 1. Vertical distance from surface of a lower floor to the surface of the floor above. Used to determine unit rises in stair construction. 2. Vertical distance from the top plate or top of the wall to the top of the roof ridge. |
| Riser | 1. Vertical member of stairway placed between two treads. A trim board set on edge and rabbited into the treads. 2. Vertical electrical conduit that routes conductors from floor to floor in a multistory building. 3. Vertical pipe that conveys hot water to steam for heating from floor to floor in a multistory building. RISER PIPE. 4. Potable or non-potable water supply piping installed vertically from one floor to another in a multistory building. 5. Raised platform for a performer. |
| Stairway | 1. Complete flight of steps or series of flights extending from one story of a structure to another. Includes treads, risers, landing, handrail components, and structural supports. |
| Flight | 1.Continuous series of steps in a stairway without landings. |
| Stair Bracket | 1. Decorative supporting member fastened to the face of an open stringer to reinforce a tread. |
| Tread Width | 1. Distance from front of the nosing to rear edge of the tread in a stairway. |
| Stair Bolt | 1. Hardware with a wood thread on one end and a machine screw on the other end. Used to fast a handrail to a volute. (see bolt*) |
| Landing | 1. Horizontal platform in a stairway used to break a run of stairs. Also provides a location for a change of direction in a staircase. |
| Stair Rod | 1. Metal bar attached at the back of a tread and the lower edge of a riser to hold carpeting in place. STAIR WIRE. Stair stringer: see stringer. |
| Stair Well | 1. Opening in a floor or through a series of floors in a multistory structure through which stairs are installed. |
| Stair Ratio | 1. Relationship between unit rise and unit run in a stairway. Unit rises plus unit run should be greater than 17” and less than 18” for the proper incline. |
| Stair Gauge Clamp | 1. Small framing square accessory fastened in position to assist in laying out stairway stringers fir treads and risers. Used in pairs. Stair head: Highest tread in a stairway. |
| Landing Newel Post | 1. Vertical member that supports a handrail at a landing or change of direction in a stairway. |
