Installation Guide

4
No. of rises No. of steps:
One less than
no. of rises
X: Distance from bottom
step tread front to wall
Y: Vertical measurement of
wall - lower oor to upper
oor
12 11 63” 87
1
/
2
” – 106
1
/
4
”
13 12 68
1
/
8
” 94
1
/
2
” – 115”
X
Y
R1-99672-USA-01 / 10-03-2011
BEFORE INSTALLATION
IMPORTANT
Before starting installation, calculate the exact rise height of each step of the staircase. This is
done by measuring the distance from the lower oor to the upstairs oor measuring vertically
along the wall and then dividing by the number of rises. The number of rises is the same as the
number stair treads plus 1. The plus 1 is to consider distance of the last step of the staircase to the
upstairs oor.
BB =
Example: Top edge of oor to top edge of next oor: 102”, 12 rises (11 steps + 1).
102” divided by 12 = 8 ½”. This is the rise height per step.
The opening in the ceiling should not be less than 51 ¼” for straight ights of steps.
This is to ensure that walking up the steps is a comfortable experience.
Recommended rise height: 7
5
/
16
” to 8
1
/
16
”
Maximum rise height: 7
5
/
16
” to 8
1
/
16
”
INSTALLATION
Top step element
AA =
Measure (from the top edge of the top oor) the calculated rise height plus the thickness of one
step (e.g. step 1
3
/
8
” thick + calculated rise height 8 ½” = 9
11
/
16
”).
This is the installation height for the top edge of the step support.
Please look at page 5 - BB: Is the calculated rise height e.g. 8 ½”.
It’s important to support the staircase temporarily during installation to prevent the weight of the
stairs to skew the riser measurements before fastening the lowest column support to the oor -
please see page 6.
NOTICE: VERY IMPORTANT - Staircase is to be assembled from the top oor down.
NOTICE: VERY IMPORTANT - WHEN MOUNTING OUTSIDE BANISTER
If the staircase is mounted with a turn, please note that the distance between the banister
elements may vary from 5
5
/
16
” to 13
9
/
16
” when mounting the outside banister.