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An illustrated stair glossary. The terms used in the design and construction of stairs, staircases and stairways.

Hint: Hit "Ctrl + f" to search this stair glossary page.

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B
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Baluster
A small post used to support a handrail and to infill the section below it.   Baluster page.
Balustrade
A complete railing system which may consist of vertical members and rails and any infill panels, wire etc. to stop people and objects falling off stairs, landings and balconies etc.  Balustrade page.
Bracketed strings
A small decorative bracket that is fixed under the tread overhang to a cut string. It is mitred to the riser rather than the string being mitred.   Bracketed strings page.
Bullnose Step
A bottom or lower step of a flight of stairs, with a quarter circular end.  Bullnose Step page.
C
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Commode Step
A round end step where the radius of the semicircular end is double or sometimes more than a standard round end step. Often supporting another normal radius round end step.   Commode Step page.
Curtail Step
The starting step of a flight of stairs that quite often is a feature step wider than the rest. In shape it has one or both ends in the shape of a scroll or spiral. For this reason sometimes called a Scroll Step.   Curtail Step page.
Cut and Mitred Strings
The outside strings are cut with a mitre to the vertical joint with the riser. The tread has a bead the same size as the nosing returned on the end of the tread.  Cut and Mitred Strings page.
Cut Stringer Stairs
Stair stringers that are cut to the shape of the treads and the rises in a sawtooth effect   Cut Stringer Stairs page.
D
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Dog Leg Stair
A half space landing that is just wider than the combined width of the two flights that meet it.   Dog Leg Stair page.
H
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Handrail Gooseneck
A curved section of a handrail that terminates at a newel post.   Handrail Gooseneck page.
Handrail Scroll
A spiral type ending to a stair handrail. In most cases they they transform from the sloping section to the horizontal plane. Also called a Handrail Volute in the US.  Handrail Scroll page.
Handrail Wreath
The section of a handrail that changes direction. Usually in a smooth curve.   Handrail Wreath page.
Handrails
A safety rail or railing at a convenient height to be grasped by the hand . Used on stairs, landings, platforms, elevated ramps etc.  Handrails page.
K
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Kite Winder
The central winder in a quarter turn of windings steps. Named for it's shape.   Kite Winder page.
N
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Newel Cap
An ornamented feature to the top of a newel post.   Newel Cap page.
Newel Drop
An ornamented bottom of a newel-post seen below the soffit.  Newel Drop page.
Newel Posts
Posts that carry the handrails in a flight of stairs.  Newel Posts page.
O
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Open Riser Stair
A stair that has no physical riser members.   Open Riser Stair page.
R
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Round End Step
A bottom or lower step of a flight of stairs, wider than the standard steps that has one or both ends in the shape of a semicircle.   Round End Step page.
Routered Stringers
Full depth stringers that are routered or housed to hold the treads and rises  Routered Stringers page.
S
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Spiral Newel
The central load bearing post in a spiral stair. Also simply called a Newel.   Spiral Newel page.
Spiral Stairs
A circular staircase, the treads consisting of winders only. It takes the form of a helix and is quite often called a helical stair.  Spiral Stairs page.
Stair Carriage
A sloping beam under the steps of a stair to provide extra support between the strings.  Stair Carriage page.
Stair Flight
A continuous series of steps with no intermediate landings.  Stair Flight page.
Stair Headroom
The minimum required height of any floors or bulkheads above a staircase.  Stair Headroom page.
Stair Nosing
1.) The part of the tread that overhangs the riser. The often rounded last edge of a tread.
2.) Anti Slip Nosing Proprietary fittings for fixing to tread edges to prevent slipping.   Stair Nosing page.
Stair Strings
The sloping members of a flight of stairs that support the treads.
Also called Stringers . Under certain conditions they can also be categorised as:-
Bracketed,Close,Cut, Curved,Outside, Wall, Wreathed.   Stair Strings page.
Stair Total Rise
The amount that a stair, staircase or a person walking up a stair travels in a vertical direction. The total rise.   Stair Total Rise page.
Stair Winders
Radiating steps, narrower at one end than the other.  Stair Winders page.
Staircase
A flight of stairs or series of flights used as a means of getting between floors or levels. Includes all supports,and handrails and safety features. Also known as simply a Stair or as a Stairway in the US  Staircase page.
Stairway Landings
Horizontal spaces or or platforms at the ends of stairs. Or breaks between flights of stairs, Used for convenience, to turn corners and as far as regulations go to halt someone who is falling.  Stairway Landings page.
Stairwell
A vertical shaft through the floors of a building which contains the staircases.  Stairwell page.
Step Rise and Tread
A step is a rise from one level to another. A single step is just the vertical rise between two levels.
In stair construction a step has two components, The vertical distance of travel known as the rise or riser and the horizontal distance of travel known as the tread or go.  Step Rise and Tread page.
W
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Wreathed String
The junction of two strings that are joined with a curve. The wreathed one has a curve to it's end that matches the curve of the handrail scroll above it   Wreathed String page.

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Please Note! The information on this site is offered as a guide only!  When we are talking about areas where building regulations or safety regulations could exist,the information here could be wrong for your area.  It could be out of date!  Regulations breed faster than rabbits!
You must check your own local conditions.
Copyright © Bill Bradley 2007-2010. All rights reserved.
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