Spiral siḍạr reaḱ hisạb
Daya kate̱ lạktianaḱ siknạt udug me̱
H - Siḍạr uṭhạu
D1 - O.D.
D2 - Bhitri ḍạr
C - Step ko lekha
Z - Step reak̕ mo̠ṭa
A - siḍạr roṭeṭ ko̠na
sạkhiạt
Spiral reaḱ ḍạrko reaḱ ḍhertet́ do 80 cm khon kom baṅ hoyoḱ jạruṛa.
Tala bhag re step reak̕ ḍhertet̕ do̠ kom se kom 20-25 cm hoyok̕a, ḍher bhag re - 40 cm khon jạsti do̠ baṅ hoyok̕a.
Spiral siḍạr reaḱ step reaḱ jạruṛ do̠ march siḍạr lạgit́ jạruṛakan jạruṛ khon hõ bạṛti hoe daṛeaḱa.
Marsal reaḱ siḍạr lạgit́ ḍạr reaḱ sadharọn jạruṛ do̠ 16 cm, spiral reaḱ siḍạr lạgit́ do̠ - 18 cm.
Jaha jaega re jaṅga ḍahar reaḱ ḍahar do̠ 25-30 cm leka hoyoḱ jạruṛa, ḍạr sãote - kom se kom 30-35 cm.
Noa step reaḱ ḍhertet́ do̠ ạḍi subitawanaḱ hoyoḱa.
Spiral siḍạr reaḱ ḍạrko reaḱ ạt.
h - step jhạl
W1 - ḍher bhag re step reak̕ ḍhertet̕
W2 - step khali ḍher
α - ḍijain step ko̠na