Oak90 design your staircase Oak90 is made up of 11, 12, 13, 14, 15 or 16 rises with steel supports and a railing on one side. The plans indicate the maximum and minimum dimensions of all the configurations which are possible with Oak90 I straight, Oak90 L at 1/4 of a turn and Oak90 U at 2/4 of a turn. Oak90 is adjustable in rise, going and rotation. The direction of rotation of the staircase may be clockwise or anticlockwise
Floor-tofloor height
Rise
A
Rotation
IS THERE AN EXISTING OPENING? Look through the plans and find the one where the opening is smaller than the opening in your floor. Keep in mind that the opening in the floor must have at least the dimensions of the staircase minus one tread. DO YOU STILL HAVE TO MAKE THE OPENING? Look through the plans and find the one most suited to your stairwell. Keep in mind that the opening in the floor must have at least the dimensions of the plan minus one tread.
Going
P
L-configuration
1
Width
L
U-configuration
I-configuration
Type of opening