Generally, 900mm is used for staircases with a slope of around 30°; 600mm is typically used for staircases used by children. For general indoor staircases, a height of ≥900mm is generally taken as 1000mm. The horizontal railing on the side closest to the stairwell should be >500mm ntev thiab ntau dua lossis sib npaug li 1000mm siab; Sab nraum zoov staircase handrails yuav tsum siab tshaj los yog sib npaug rau 1050mm siab.
1. Indoor Staircase Handrail Height: Feem ntau, qhov siab ntawm sab hauv staircase handrails yog 90cm, uas yog tus qauv tus nqi. Txawm li cas los xij, cov ntaub ntawv no tuaj yeem hloov kho raws li qhov xwm txheej tiag tiag. Thaum lub staircase ntev tshaj 5 meters, lub tes tuav qhov siab tuaj yeem tsim nyog nce mus rau 1 meter. Tau kawg, yog tias muaj cov menyuam yaus hauv tsev, nws raug pom zoo tias txawm tias qhov ntev ntawm lub staircase tsawg dua 5 meters, nws tseem yuav tsum tau tsim kom siab li 1 meter siab, thiab cov tes tuav yuav tsum tsis txhob txav mus.
2. Qhov siab ntawm cov ntaiv sab nraum zoov yuav tsum siab dua me ntsis ntawm cov tes tuav sab hauv. Thaum qhov siab ntawm staircase tsawg dua 24 meters, qhov siab ntawm sab nraum zoov stair handrails feem ntau tsis pub tsawg tshaj 105 cm. Thaum qhov siab ntawm staircase yog ntau tshaj 24 meters, qhov siab ntawm cov ntaiv sab nraum zoov feem ntau tsis pub tsawg tshaj 110 cm.
