5.9.9. It is not advisable to arrange door sill or nosing in the interior side of door, in case the clearance space is less than 800 mm. Note: It is only permissible to arrange door sill and nosing in the interior side of door in case the clearance space exceeds 800 mm, and the door sill or nosing does not exceed 50 mm. 5.9.10. As for pulling door, sliding door, accordion door, the clearance space regarding each door type is shown in table 4 and table 5. a) Pulling door: Regulation on clearance space for wheelchair moving is indicated in fig 32. In case door being shut or locked, these dimensions were 300 mm plus. Table 4: Clearance space for wheelchair in case of pulling door Type of door Clearance space not less than, mm Direction of passage way Face of door Perpendicular to door Under door closer parallel to door From the front side Pulling 1500 500 From the front side Pushing 1200 500 From the hinge Pulling 1500 900 1300 1000 From the hinge Pushing 1000 1300 From the door closer Pulling 1200 600 From the door closer Pushing 1000 600 b) Sliding door and accordion door: Regulations on clearance space for wheelchair moving are shown in table 5 and seen in fig 33. c) Regarding entrance ways without door: Regulation on clearance space for wheelchair moving where entrance way being less than 800 mm, is 1,200 mm. Table 5: Clearance space for wheelchair in case of sliding and accordion doors Direction of passage way Clearance space not less than, mm Perpendicular to door Parallel to door From the front side 1200 - From the side of hinge 1000 1300 From the side of door closer 1000 600 Fig 32: Clearance space for normal pulling door Fig 33: Clearance space for pushing door and accordion door d) Regarding two opposite doors: Regulation on clearance space for wheelchair moving between two doors opened toward two different directions is not less than 1,200 mm plus the door's width. Doors in the same row could be opened to the same direction or to two different directions. 5.9.11. Regarding self closing/ opening doors, it must also ensure a clearance width not less than 800 mm. On such automatic doors, there must be guidance posters as well as contact surfaces at both sides of doors for warning and sound signals to blind people when they have been passed the doors. 5.9.12. Accessories of door such as knob, pulling handle, door closer, lock and other devices on the door must ensure the use of PWD. There accessories are installed at a height of 800mm ÷1,100mm from the floor surface or the ground. Regarding sliding doors, accessories must be able to use from both sides. Note: Lock is only used for the security purpose, and not for any other purpose at any place. 5.9.13. Time interval for closing/opening the door from the opening position of 90 0 to position 12 0 must be 5 seconds. Time interval for closing/ opening the door with spring hinge from the opening position of 70 0 to the closing position must not be less than 1.5 second. 5.9.14. Regarding transparent glazed door, there must be marked along the vertical position of door for warning users. Colours between wall and door must be contrast for easily distinguishing. Doors for the use of blind people, starting and ending spots of stair step and before the lift, must be paved by sensitive slabs for reminding sake. 5.9.15. Vision hole arranged on the door must be distant from floor surface not more than 1,000mm. 5.10. Window 5.10.1. Design of window mush ensure safety to PWD . Window width is not less than 1,200mm. Window sills are arranged at a height of not more than 700mm from floor surface. 5.10.2. Windows in rooms must be so arranged that wheelchair users could easily observe the outside. Vision angle while seating on wheelchair is in the range of 27 0 to 30 0 5.11. Balcony, loggia 5.11.1. Balcony and loggia in residences must be not less than 1,400mm wide for wheelchair could turn around (see fig 34). 5.11.2. Height of baluster at balcony, loggia must not be less than 1,000mm 5.12. Handrail 5.12.1. Handrail must be arranged at each side of any sloping way and be installed continuously at both sides of sloping way. Handrail is arranged even at landing, graded entrance and corridor. At the starting and ending points of sloping way, handrail is prolonged by 300mm more. Fig 34: Dimensions of balcony, loggia 5.12.2. Handrail must be easily grasped, and firmly fastened in the wall. It is advised to use round handrail, with diameter from 25mm to 50mm and installed at 900mm from floor surface. For wheelchair user, the interval between floor surface and handrail is 750mm. The interval from handrail to wall for fastening it is not less than 40mm. Details for designing handrail are shown in fig 35. 5.12.3. Handrail must have color contrast to that of wall. 5.12.4. In case of arranging two handrails at one side (see fig 36), the height of the upper is 900mm, and of the lower 650mm from the floor surface. 5.12.5. Handrail must not rotate in its holders, and is made from materials ensuring a force of 110 Kg. m/s 2 exerted on any points. Fig 35: Dimensions and shape of handrail’s details Fig 36: Arrangement of two handrails at one side 5.13. Floor and basement 5.13.1. Floor surface or ground for PWD to use must be flat, plane, with friction, unslippery. Where on the floor surface there is carpet it must be stuck firmly, its exterior margin must be solidly fixed on the floor. 5.13.2. Floor area for wheelchair must be flat, plane, not inclined. If the surrounding basement is irregular, baluster or shielding slabs must be installed at a height from 850mm to 1,000mm. 5.13.3. Floor surface must be firm, made from unslippery and undeformed materials. 5.13.4. It is permissible for change of vertical height by 6mm maximum, of lateral side with slope not exceeding 1:2. Changes in height of over 15mm must create sloping way as per regulation in article 5.1 5.13.5. Thickness of the shoe - wiping piece must not exceed 20mm 5.13.6. Dimensions of holes in storm water evacuation slabs at entry/exit door must not exceed 20mm x 20mm for the sharp ends of PWD’s stick, crutches to not be caught/ jammed into it . 5.13.7. In the toilet area, of there are grooves arranged on the floor surface, the diameter of groove must not exceed 10 mm ÷15 mm. Length of grooves is prolonged and perpendicularly with direction of walkway (see fig 37) 5.13.8. Before the starting point and the ending point of stair step and in front of the entry/exit door, for the use of lift, there must be arranged sensitive paving slabs to warn blind people recognizing it. Fig 37: Arrangement of grooves on floor surface of toilet area 5.14. Functional rooms 5.14.1. The design of houses ensuring accessibility and use by PWD must comply with standard TCVN 4451: 1987 - Residence - Basic rules for design. 5.14.2. Functional rooms such as drawing room, bedroom, dining room (see fig 38, 39, 40, 41) must reserve clearance space with radius not less than 1,300mm for wheelchair to move. 5.14.3. Rooms must be fully lighted, spacious and fresh, particularly natural condition must be exploited to the utmost. Regarding tube house, dwelling rooms of PWD must be at ground floor, near entrance door. Inside the rooms, there must be arranged control boards such as switchboard, plugs etc installed at height not over 1,220mm and not under 400mm. The void space before control boards has dimensions of 800mm x 1,220mm (see fig 38) 5.14.4. PWD’s bedroom being arranged near the living room space and convenient for access to other rooms of the residence, has a minimum area of 9sq.m. In arranging sleeping bed for wheelchair users, it is necessary to secure an area for turning the wheelchair with a diameter not less than 1,300mm on one side of the sleeping bed. The sleeping bed is at a height not over or equal to 450mm (see fig 39,40). 5.14.5. Equipment, furnitures in various rooms must be flexible for change if necessary. Clothes hook and hanger arranged in rooms are 1,100mm ÷ 1,200mm from the floor surface. Regarding the system of built-in commode/chest of drawers, support, clothe hanger, working desk, kitchen, table . there must be sufficient space for knees, feet and shoes’ cap not to clash with in making use of working plane. Clearance space under knees and feet putting place for PWD on wheelchair (see fig 42) is as follows: - Interval from floor surface to above knees: 650mm; - Interval from floor surface to under knees : 500mm; - Feet putting place: 200mm Fig 38: Arrangement of drawing room Fig 39: Arrangement of sleeping bed for single room Fig 40: Arrangement of sleeping beds for double room Fig 41: Arrangement of dining table [...]...Fig 41: (continued) Interval from floor surface to above knees Interval from floor surface to under knees Feet putting place Fig 42: Void space for knees and feet H×nh 43: TÇm víi cao cña ngêi ngåi xe l¨n kh«ng cã vËt c¶n . From the side of hinge 1000 130 0 From the side of door closer 1000 600 Fig 32 : Clearance space for normal pulling door Fig 33 : Clearance space for pushing. any points. Fig 35 : Dimensions and shape of handrail’s details Fig 36 : Arrangement of two handrails at one side 5. 13. Floor and basement 5. 13. 1. Floor surface