hat
Lajè sèn nan pati santral omwens 20-25 cm nan sans la pandan de twa de-pas plis pase 40 cm. Wotè étapes plus kapab pi gwo tou pase wotè rekòmande pou mid-flight Des escaliers. Wotè nòmal macheskalye pou mid-flight D' escalier se 16 cm pou plimen-18 cm.
eng
Step width in the central part should not be less than 20-25 cm at the widest part - nor more than 40 cm. Spiral staircase step height can be greater than the height recommended for mid-flight of stairs. Normal step height for straight stairs is 16 cm, for spiral stairs - 18 cm