H5 - Stairs - LT#1 Flashcards
Describe a nosing return:
The exposed end of the tread is shaped in the same way as the front nosing with molding placed under the tread.
Describe a filet:
Filet are shaped to fit between the balusters under the handrail & on top of the buttress cap
Describe a buttress cap (Shoe rail, base rail)
Shoe rail/ base rail - USed under the balusters, shaped to take the end of the balusters used in railing at landing or on top of the stringers.
Describe an angle newel:
Used at turns on a staircase.
Describe a finished opening:
The horizontal distance from the edge of the nosing at the upper landing to the edge of the finish at the other end of the stairwell.
What is the difference between a long L stair and a wide L stair?
Long L stairs have 2 or 3 treads at the bottom or the top at right angles to the treads.
When is a landing required in a stairway?
At 3.7 m intervals.
What is the difference between open stairs & closed stairs?
Open stairs - Have one or both sides open to a room
Closed stairs - Have both sides closed
What is the minimum landing depth for an L-Shaped interior stair serving a dwelling unit?
900 mm
What is molding?
Trim is used under the nosing to finish the stairs
What is the balustrade?
A complete unit of the newel posts, handrail, balusters and buttress cap
Balusters must be constructed so that they DON’T facilitate climbing, true or false?
True, they cannot facilitate climbing.
Materials used as handrails must be continuously graspable except where:
Interrupted by newels at changes in direction.
How much space is between the handrail and the wall?
50 mm
When is a landing newel used in the Balustrade?
Used at the top end of a stair
A starting newel needs what through the floor?
It should extend through the floor and be securely blocked to prevent any movement.
What is a stringer support board?
Also known as a hanger board, 19 mm thick plywood nailed or screwed to the stringers & to the headers of the stairwell opening.
What is the quality of all open stairs?
All contain a finished balustrade.
All open stairs have one or both sides open to a room or hallway.
What is the quality of all closed stairs?
Closed on both sides of the stairway. Handrail attached to the Wall or one on both sides.
What is a narrow U-stairs, and what is its advantage?
Two flights, running in opposite directions with a landing at the midway point.
Advantage: Compact
What are Wide U Stairs?
Have THREE flights, separated by two landings. This type of stairway has an open center that allows light to penetrate to flights below.
What are Long L stairs?
Long L stair consist of a straight flight, with two or three treads at the top or bottom, at right angle to the main stairs
What are Wide L stairs?
Wide L stairs consist of two straight flights at right angles to each other. With landing or winders at the change of direction.
What are double L stairs?
Double L stairs consist of a straight flight, with two or three treads at right angles to the main stairs at both the top & bottom. Landing or winders are used at the change of direction.
What are quarter-turn stairs?
Stairs such as the wide L and the Long L are also known as quarter-turn stairs.
Quarter may use landing or have winders in the direction change.
Winders are stairs with tapered treads at 45 degrees or
30 degrees
What is the purpose of a landing?
Change directions or break the total rise into smaller figures.
