# Calculation of metal stairs with a rotation of 90 degrees and a bowstring zigzag

drawing scale 1:

Specify dimensions in millimetres

Steps on the upper bowstring C1
On the bottom of the closed string C2
Bowstring T

The height of the opening Y
The length of the opening X
Width of stairs W

The thickness of the treads Z
Ledge F

The thickness of a bowstring A
Width of a bowstring G

## Calculation of metal stairs to turn to 90 degrees and bowstring zigzag

Select the required dimensions in millimetres

X - length of opening
Y - The height of the opening
W - Width of stairs
T - the number of strings
C - Number of steps
Z - The thickness of the treads
A - The thickness of a bowstring
G - Width of a bowstring

SP - Determine the position of the first degree relative to the level of the floor of the second floor.
LR - Set the direction of the lift. For the drawing steps.

Features of the program.

Calculation of convenient size, steel stairs with turn in 90 degrees.
Determining the amount of material.
The exact dimensions of all the parts.
Detailed drawings and schematics of all elements of the stairs.

Author of the project: Dmitry Zhitov