Winder Stairs

Question 1

What is the advantage of a winder stair over a L shaped stair

Answer 1

The advantage is that two more steps are accomplished at the corner landing position resulting in a stair that occupies less floor space and requires a smaller Opening through the upper floor

Question 2

Winder treads are the only ones allowed to…

Answer 2

Converge to a point or have a minimum run less then 150mm

Question 3

The center winder tread is known as?

The other two treads are known as?

Answer 3

The kite (because of its shape)

Fliers

Question 4

The term winder stair traditionally means?

Answer 4

A stair with that has three pie like treads at the corner landing position

Question 5

What degrees or angle is permitted on winder stairs

Answer 5

30- 45

Configurations of such

30* = (One 30* winder)
45* = (One 45* winder)
60* = (two 30* winders)
90* = (three 30* or two 45* winders)

Question 6

A winder stair may also refer to a…

Answer 6

A single 30* or 45* tread of the stairs are to turn 30* , 45* or 60*

Question 7

How many sets of wonders are used between floor levels

Answer 7

One set of winders with a maximum of three winders turning to a maximum angle of 90*

The set may contain one two or three wonders in succession

Question 8

Winder treads must not

Answer 8

Be separated by normal treads, tapered treads, or landings.

Question 9

Where can you find information on tapered treads in NBC

Answer 9

Within the curved stair portion.

Found in NBC 9.8.4.3

Question 10

When constructing a winder stair using a supported landing you will need upper and lower straight flight stairs and?

Answer 10

Two angular landing platforms and one rectangular landing platform