U ôron mze u ikyônough ki torough ki i yer ér spiral staircase la.

M-er u ôron kwagh u ikyônough ki torough ki spiral

We a rumun yô, tese mze u i gbe u a kar la.

H - Mze u stair
D1 - O.D.
D2 - Diamita u ken ato
C - Iyenge i akaa a i gbe u a er yô
Z - Mzehemen u step
A - Angle u geman sha ityough ki ikyônough ki torough

i ter

Ijiir i i yer ér spiral staircases la, i de lu a ikyav mbi eren tom a mi mbi i yer ér spiral staircases la ga.
Ityough ki step ki ki lu hen atô la ki lu 20-25 cm, ki ki hembe gbangese la yô - ki hemba 40 cm ga. Alaghga mzehemen u ityough ki ikyônough ki torough ki i yer ér spiral staircase la kia hemba mzehemen u i kaa ér i cir sha ityough ki ikyônough ki torough ki zenden sha mi la. Ior mba ve lu sha ityough ki ikyônough ki torough ki i yer ér marching stairs la, ka ve lu 16 cm, mba ve lu a ikyônough ki torough ki spiral la yô, ve lu 18 cm.

Ijiir i angahar a eren tom la, angahar a spiral staircase la a lu er 25-30 cm nahan, sha kpe - a lu 30-35 cm. Step depth ne una lu kwagh u injaa kpishi.

Dimension mba eren tom u spiral la.

h - mze u angahar
W1 - Gbanger u angahar sha vegher u gbangese
W2 - ityough ki lun gbilin
α - Angle u eren akaa