Winder Stair Calc

Question 1

Define walk line

Answer 1

The walk line is a assumed line of travel that an individual would use when as sending up and down the stairs.

It is the shortest possible route that a person would travel which is closest to the inside turn

Question 2

Define walk line radius

Answer 2

Walk line radius is based on a theory that the unit runs take. At the walk line on theee angular treads should be like the unit run of the straight ight stairs leading to and from the winder

Question 3

Calculate Walk Line Radius

Answer 3

C ÷ 2 π= r
3 unit runs would = 90*
12 unit runs would = circumference (360*)
12 x unit run = circumference
C ÷ 12 = urun 1 segment of circumference
(C ÷) 2 x 3.1416= radius
Round up to next full mm = walk line radius

Question 4

The walk line is always considered to be

Answer 4

450mm from the inside of the stair

Therefore the layout point for a winder nosings cannot be less then 450mm

Question 5

In any 30* ,60* ,90* triangle

Answer 5

The hypotenuse is twice the length of the base

The base is one of of the hypotenuse

And the hight is √3 (1.732) times as long as the base