Glossary Home Page
Here you will find an extensive glossary of staircase related terminology, including definitions and descriptions of frequently misunderstood or unknown terms.
Please click on the corresponding letter to view the definition you require.
If there are any terms you know of that are not included that you think would be helpful to other visitors, please help us to expand our knowledgebase by emailing us at .
Glossary "O"
B | C | D | F | G | H | L | M | N | O | P | R | S | T | U | V | W | 3 | 6
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| Oak | Is a pale, reddish-brown hardwood with a generally straight grain  |
| Open Rise Stair | This is a stair in which there is a space between the surface of the tread and the bottom of the next riser (a dummy riser). The space must never be greater than 99mm
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| Opening Cap | A rounded handrail starting cap used above a continuous newel. It is often paired with an up easing (collectively called an opening rise) to start the raking balustrade  |
| Over-easing | An concave arched handrail section to (continuously) join a raking handrail to a horizontal handrail at the top of a staircase  |
| Overall Stair Width | The width of the staircase, including the stringers.
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