Kalkulesen bilong ol step wantaim tanim bilong 90°
Plis soim ol mak yu laikim long milimita
X - longpela bilong op we step bai kisim
Y - antap long namba wan plua i go antap long namba tu plua
E - Bikpela bilong step
F - Ovahang bilong ol step
Z - Step tiknes
C - namba bilong olgeta step
P - Namba bilong ol step + pilai graun
Wok bilong skelim ol step we i save tanim em i hat liklik long wok bilong skelim ol step we i stret.
Ol i save skelim 'stair comfort' long yusim wanpela fomula we i kamap longpela bilong step.
Longpela bilong wokabaut bilong wanpela man i save stap namel long 60 i go inap 66 sentimita, na averes bilong en em 63 sentimita.
Wanpela gutpela step i stret long dispela fomula: 2-pela step hait + dip bilong step = 63±3 cm.
Gutpela rot bilong putim ol step long 30° i go inap 40°.
Dip bilong ol step bilong step i mas wankain olsem sais bilong su 45 - i no liklik long 28-30 cm.
Nogat dip inap long kompensesen long rot bilong 'protrusion' bilong step.
Hait bilong step i mas i go antap long 20-25 sentimita.
Yu ken tu kisim gutpela step we i save tanim tanim sapos yu senisim mak bilong pletfom.
Program bai droim ol piksa bilong wanpela step we i tanim wantaim ol bikpela angul na sais.
Ol droing i soim ol jeneral sais bilong ol step, ol mak bilong antap bilong ol step long ol string, ol kona bilong ol step na ol bikpela sais bilong ol step yet.