Terrace room stairs every 4 m. Luktang 18 cm maximum width of not less than 25 cm. Fire escapeInside the building must be at least 80 cm wide net outdoors must have a width of not less than 60 cm NET.
Landing every four meters, the ball is not higher than 18 centimeters in width not less than 25 cm fire escapes in the building must have a width of not less than 80 cm width of the building must be at least 60 cm.
All the 4 Chan stairwell. "M. you maximum. "18 cm. The width is less than. "25 cm
. LadderInside the building there must be no less than as 80 net width as the cm. The exterior of the building to have a width not less than. "60 net cm