Laij tau qhov loj ntawm newer

Muab xam los ntawm muab kauv stairs

Sau rau qhov ntev yuav tsum

H - The stairs rau nws
D1 - txheej inch
D2 - Txoj kab uas hla tau nrog
C - Cov nab npawb ntawm cov kauj ruam
Z - Thickness ntawm cov kauj ruam
A - Lub kaum ntse ntse ntaiv

Pab

Ntev ntawm cov kauj ruam twg spiral staircases yuav tsum tsis muaj 80 cm tsawg dua.
Lub dav txog rau theem hauv central sab ntawm kawg 20-25 cm hauv lub widest tshooj ntawm-tsis tshaj 40 cm. Cov kauj ruam newer nws yuav loj tshaj qhov nws pom zoo rau lub mid-flight ntawm stairs. Lub cev nws muaj cov kauj ruam rau mid-flight ntawm stairs yog cm 16, rau tus ntsia thawv-18 cm.

Qhov twg cov ceg, kauj ruam newer yuav tsum txog 25-30 cm mus rau ntug-tsis tshaj 30-35 cm. Cov le ntawm cov theem no kuj yooj yim. Neeg ko taw ces nqis yuav tsis tag overhanging ntug.

Dimensions theem helical stairs.

h - ntev theem
W1 - dav nyob widest qhov
W2 - dav ntawm workpiece theem
α - cov kauj ruam zoj ntawm lub kaum loj