Data hmasa ber
Ladder san zawng a ni 2500 mm
Plan-a staircase sei zawng chu 3000 mm
Platform zau zawng 800 mm
Step awm zat 10
Playground ai chuan 4 step hrang hrang a awm
Step thickness a ni 50 mm
ledge step hrang hrang a awm 50 mm

stair string a ni
Stairs chunglam string sei zawng 2663 mm
Stairs hnuai lam string sei zawng 1775 mm
Step hnuaia cut inkar bowstring-a hlat zawng 444 mm
Ladder angle a awm 34.3° floor level atanga lak a ni

Step size hrang hrang
Step San zawng a ni 250 mm
Step thuk tak a ni 417 mm
Riser san zawng a ni 200 mm