Kwan pa dit pa yen ma nyai

Kwan pa spiral staircase

Kwayu nyuth dit pa piny ma mitere

H - Bor pa step
D1 - O.D.
D2 - Diameter mi iye
C - Namba mi tyelo
Z - Lat pa step
A - angle mi wire pa step

mamako kume

Bor pa step i spiral staircases ucikere ngo ni bedu piny pa 80 cm.
Lat pa step i thenge ma ikin ucikere ni bedu 20-25 cm, i thenge ma lac - kud ukad 40 cm. Bor pa step pa spiral staircase copo bedu malac uloyu bor pa step ma juyero pi wotho. Bor pa step mi wotho utiye 16 cm, pi step mi spiral - 18 cm.

I kabedu ma tyend dhanu ucungo i iye, tyend cinge ucikere ni bedu 25-30 cm, i ngete - 30-35 cm. The step depth eni bibedo yot.

Dit pa step pa spiral staircases.

h - bor pa tyend
W1 - lac pa step i thenge ma lac
W2 - lac pa step blank
α - goyo step angle