Kalkulesen bilong wanpela spiral step
Plis soim ol mak yu laikim
H - Hait bilong step
D1 - O.D.
D2 - Insait diamita
C - Namba bilong ol step
Z - Step tiknes
A - step rotesen angle
referens
Longpela bilong ol step insait long ol 'spiral step' i no ken liklik long 80 sentimita.
Bikpela bilong step long namel hap i mas i stap 20-25 cm, na long hap we i bikpela tru - i no ken winim 40 cm.
Hait bilong ol step bilong wanpela 'spiral staircase' i ken bikpela moa long hait bilong ol step bilong wokabaut.
Nomal hait bilong ol step bilong wokabaut em 16 sentimita, bilong ol step we i tanim tanim - 18 sentimita.
Long ples we lek i step long en, step bilong spiral step i mas stap olsem 25-30 cm, long arere - 30-35 cm.
Dispela step dip bai gutpela tru.
Sais bilong ol step bilong ol spiral step.
h - longpela bilong step
W1 - bikpela bilong step long bikpela hap
W2 - step blank width
α - disain step angle