Table 2: Smallest dimensions of lift cabin Position of door Clearance width of door (mm) Width in the interior of lift cabin (mm) Depth from rear wall to front wall (mm) In the middle 900 2100 1300 On the side 900 1800 1300 Random 900 1400 2100 900 1500 1500 Fig 25: Regulations on distance between lift and staircase Fig 26: Dimensions of lift cabin 5.7.5. Area of waiting space before entering the lift must not be less than 1,500 mm × 1,500 mm. 5.7.6. The lift door is equipped with automatic closing, opening device. Time duration for door closing/ opening must be over 20 seconds. 5.7.7. The control switchboard in lift cabin is installed at an elevation not more than 1,200 mm and not less than 900 mm from the cabin floor to the center of highest control button. On control buttons there must be symbols or tactile signals and Braille raised dots for blind people. Symbols and Braille raised dots are shown in fig 27. Note: The system of lift control includes emergency control button, alarm whistles, fire alarm warners arranged in a group under the control switchboard. Fig 27: Symbols and signals on the access to lift reserved to blind people Fig 28: Elevation for installing control apparatuses 5.7.8. Control buttons in front of lift cabin door are installed at an elevation not over 1,200mm and not less than 900mm from the floor surface. This elevation is counted from the center of control buttons (see fig 28). Control buttons are arranged in the side - wall face, at 300mm ÷ 500mm from the adjacent wall. 5.7.9. Raised symbols and Braille dots are put in the left of buttons they represent. Specification to identify these symbols and raised dots are stipulated in table 3. 5.7.10. In the lift cabin, it is necessary to install sound signals and visible figures for identifying position of floor the lift will reach. Table 3: Symbols of lift control buttons Sound signals will emit once in ascending direction and twice in descending direction, or there will be announcement by words emphasizing “up” or “down”. Sound signals shall have a maximum frequency of 1500Hz. Word announcement shall have a maximum sound intensity of 10dBA but not exceed 80 dBA as measured at call button in the hall; it shall automatically announce the number of floor where the lift stops. 5.7.11. The lighting intensity at control board, floor surface, door sill, waiting space before entering the lift must not be less than 60 lux. 5.8. Emergency escaping way. 5.8.1. In the residence, it is absolutely necessary to arrange emergency escaping way for PWD when accident occurs. On the escaping way, it must be path reserved to PWD at the same elevation, and by the end of escaping way, it must be a staircase. 5.8.2. Width of escaping way must be 900mm ÷ 1,200mm. At crowded area, it must be 1,800mm. On escaping way, there must not be change of elevation. Where automatic door or magnetic ticket are used, these door must be automatically opened when a fire occurs. 5.8.3. Lighting intensity on escaping way must ensure 0,1 ÷ 0,2 lux. At entry/ exit door and up/ down step, lighting intensity has to be ensured too. 5.9. Doors 5.9.1. Doors in residence being designed for PWD’s use must not cause dangerous obstruction, must be easily closed and opened, and be arranged for convenient and safe circulation. Sound signals will emit once in ascending direction and twice in descending direction, or there will be announcement by words emphasizing “up” or “down”. Sound signals shall have a maximum frequency of 1500Hz. Word announcement shall have a maximum sound intensity of 10dBA but not exceed 80 dBA as measured at call button in the hall; it shall automatically announce the number of floor where the lift stops. 5.7.11. The lighting intensity at control board, floor surface, door sill, waiting space before entering the lift must not be less than 60 lux. 5.8. Emergency escaping way. 5.8.1. In the residence, it is absolutely necessary to arrange emergency escaping way for PWD when accident occurs. On the escaping way, it must be path reserved to PWD at the same elevation, and by the end of escaping way, it must be a staircase. 5.8.2. Width of escaping way must be 900mm ÷ 1,200mm. At crowded area, it must be 1,800mm. On escaping way, there must not be change of elevation. Where automatic door or magnetic ticket are used, these door must be automatically opened when a fire occurs. 5.8.3. Lighting intensity on escaping way must ensure 0,1 ÷ 0,2 lux. At entry/ exit door and up/ down step, lighting intensity has to be ensured too. 5.9. Doors 5.9.1. Doors in residence being designed for PWD’s use must not cause dangerous obstruction, must be easily closed and opened, and be arranged for convenient and safe circulation.5.9.2. In door and out door floor surface must be on the same elevation. If there is difference in elevation of out-door and in-door floor surfaces, it is necessary to design sloping way at the door itself. 5.9.3. Inside and outside of doors, there must be a clearance space with dimensions of 1,500mm × 1,500mm. 5.9.4. Where the door way comprises two layers of door, behind each layer there must be a clearance space not less than 1,200mm. 5.9.5. Priority is given to the use of double - action door. Where conditions permit it, there is possibility to use self - closing/ opening door, sliding door, revolving door instead of hand - operating door. It is not practicable to use types of too heavy door or multi - panel revolving door. Width must not be less than 800mm, and it is not advisable to arrange door close to wall corner. 5.9.6. Doors for toilet area are preferably those opened to outside or sliding ones. Suspension door or pushed door must be light weight . It is only permissible to use doors opened to inside where toilet room interior has got sufficiently large space. At the inside face of door it is necessary to arrange horizontal support at 1,100mm from floor surface. Door in toilet area must be over 700mm wide . Note : Force deployed for opening / closing all types of door in toilet area does not exceed 30 kg.m/s 2 and could open by an angle up to 90 0 . 5.9.7. Door knobs must be easily handled, close to the door closer and rotated clockwise. Door knobs are arranged at a height of 800mm : 1.100mm from the floor surface ( see fig 29) 5.9.8. Where two doors are opened to opposite direction with the corridor, the width of corridor must be 800 mm, enough for wheelchair to circulate. In the hall space, with two doors opened to the same direction, there must be a width of 1,200 mm. Where a door is opened to opposite direction with that of the passage way, it is necessary to arrange a clearance space with a width exceeding 500 mm on the side of door knob (see fig 30, 31). Fig 29: Dimensions for arranging various devices and signals of door Fig 30: Direction for accessing the doos Fig 31: Various modes for opening doors