U-Shaped Staircase Calculator (180 degree turn, Half turn)

How to calculate U-Shaped Stair?

• Step 1. Choose the measurement units, DU — mm, cm, m, inches, feet.
• Step 2. Choose the drawing color, CL — monochrome, color.
• Step 3. Choose the staircase type — left turn, LF, right turn, RG.
• Step 4. Choose how to calculate total run — along upper stairway, FTP, along lower stairway, FBT.
• Step 5. Input the stair, stairwell dimensions — total rise, Y*, total run, X, stairway width, Z, opening between stairways, MDS.
  * from the 1nd floor level to the 2nd floor level
  * total rise = stairwell height (if top step is on the 2nd floor level)
• Step 6. Input the landing parameter — depth, LB*.
  * landing depth = distance from upper stairway bottom step to wall
• Step 7. Input the landing support joists parameters — thickness, JT, width, JW.
• Step 8. Input the support posts parameter — width, SB.
• Step 9. Input the steps parameters — number of steps on upper stairway, QT, number of steps on lower stairway, QB, thickness, SW, nosing, SF*.
  * nosing = tread overlap
• Step 9.1. Select to install the top step below 2nd floor level or keep it at the 2nd floor level, SP.
• Step 10. Select to install risers or not, H.
• Step 10.1. Input the risers parameter — thickness, HT.
• Step 11. Input the stringers parameters — thickness, T, width, WI.
• Step 12. Input the balustrade parameters — baluster width, BA, baluster height, RH, handrail thickness, RT, handrail width, RW.
• Step 13. Input the upper floor slab parameter* — thickness, WT.
  * required for visualization only
• Step 14. Input the wall parameter* — thickness, WT.
  * required for visualization only
• Step 15. Please check all entered values, click the «Calculate» button and get a U-Shaped Staircase with Landing design.

Plans of Staircase 180° Turn — Layout Notations