Page 96 - The International Journal of the Royal Society of Thailand Vol.XIII-2021

The International Journal of the Royal Society of Thailand
Volume XIII – 2021

Stairway for elder and handicap must be minimum 1.50 m. width with landing in every 2.00 m. high flight. Riser must not be higher than 0.15 m. Step must be minimum 0.28 m. wide with maximum 2 cm. overlap The space between risers is not The handrail must be prepared at English Version -1

  between steps.  allowed.  both sides.

Handrail with two different levels can be compatible with people with different
at wall-side, must be installed with 3.75 cm. distance from wall. The wall must
Handrail must be rounded-shape with 3.20-3.80 cm. diameter. For handrail
height. The handrail with 0.80-0.90 m. is for elder and handicap who can

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be maximum 1:12. be smooth surface.
Ramp must be minimum 0.90 m. wide for the distance less than 6.00 m. The ramp’s distance which is more than 6.00 m. must be minimum 1.50 m. The minimum 1.50 m. wide landing has to be prepared in every 6.00 m length. The area in front of ramp has to be minimum 1.50 m. The ramp’s slope has to walk. The handrail with 0.60 m. is for wheelchair and children.

86 Preparing Environment for Elders, Handicaps and Children