February 10, 2016

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Disability Codes of JEM
Harmeet shares about the drafting considerations of Jurong East Mall (JEM) based on his AcePLP client assignment experience. Being a mall, it has to be accessible by any human being. This includes the ambulatory and the physically challenged. Here are some guidelines set by BCA regarding accessibility.


PASSENGER ALIGHTING & BOARDING

A passenger alighting and boarding point:

1. Provide an access aisle of at least 1500mm wide by 4500mm long adjacent and parallel to the vehicle pull-up space.
2. Have a curb ramp complying with clause 3.4 if there is a curb between the access aisle and the vehicle pull-up space.
3. Where possible, be sheltered

CHANGE IN LEVEL

If there would be any change in level of the floor surface, the gradient of the slope shall follow the specs in Table 1. If there is a vertical rise 15mm to 200mm or greater, the ramp and landings should be of contrasting colours. The top and bottom of the ramp can be painted with the colours. To further improve, a tactile warning indicator may be provided in lieu of coloured band.  This is offset at 300mm from the edge of the ramp.  As illustrated in Figure 2.

Picture2 Picture3
Table 1 Figure 2

RAMPS

The ‘change in level’ is a generic term. This essentially pertains to Ramps. Ramps allow wheelchair users to move from one level to the next. The requirements for the ramps are as follows:

1. If a horizontal run approaches 0.9m, an alternative staircase is required.
2. The gradient of the ramp shall comply with Table 1.
3. The min width of the ramp is 1200mm.
4. The surface should be coated with a slip resistant and in accordance with SS 485.
5. The landing of the Ramps should be a min of 1500mm long and be of an interval as specified in Table 2.
Figure 3, 4 & 5 illustrate the standards dimensions for the ramps.

 

Picture4 Picture5
Table 2 Figure 3
Picture6 Picture7
Figure 4 Figure 5


RAMP RAILING


Along with the ramps are the handrails meant for additional support.The general requirements are as shown in Figure 6.The horizontal distance should be a minimum of 300mm beyond the top or bottom of the ramp.The vertical height of the handrail should be from 800 – 900mm from the finished floor level respectively.In cases where the gradient is greater than 1:25, a handrail need not be provided.
Picture8
Figure 6

EDGE PROTECTION

All ramps that are not adjacent to the wall will require edge protection.

In Figure 7, The protections that can be given are:

a) A curb with a min of 75mm height.

b) A raised barrier with its
lower edge not more than 75mm from the ramp or landing.

c) Or a rail with its bottom edge not more than 75mm from the ramp or landing surface.

Picture9Figure 7

HAND RAILS & GRAB BARS

The general requirements set out by the BCA are as follows shown in Figure 8 :

a) All handrails shall be slip resistant

b) Have a circular section of 35mm to 45mm in diameter or an equivalent gripping surface.

c) To be free of sharp or abrasive elements

d) To have continuous gripping surfaces, without interruption or obstruction that can break a hand hold

e) Have a clear space between the handrail and all wall surfaces.

1. Not less than 40mm or

2. At least 60mm where the wall has a rough surface

Picture10Figure 8

ACCESSIBLE ROUTES, CORRIDORS OR PATHS

Width
Please note that while designing a corridor, the minimum clearance width of an assessable route is 1200mm. This is to ensure that both the wheel chair user and a walking person to pass each other with ease as shown in Figure 9 below.

 

Picture12
Figure 9

 

DOORS

For the accessibility route of the doors, the minimum clear width shall be 850mm measured between the face of the door and the face of the doorstop with the door open at 90 degrees as illustrated in Figure 10.

Picture13
Figure 10

MANEUVERING SPACES AT DOORS

The doorway of a one-sided swing door shall have maneuvering spaces on both sides for wheelchairs and the following clear spaces shall be provided adjacent to the leading edge of the door. On the pull side, the minimum space of 600mm and on the push side a minimum space of 300mm.Figure 11 illustrates the following.

Picture14Figure 11

STAIRS

In every building, stairs are intended as optional requirements for the ambulant.  And hence shall follow the requirements as set out by the BCA.Treads and risers
The first step has a uniform riser of maximum 150mm and the treads of minimum 300mm. There should not be any opening between the risers as shown in Figure 12.

Nosing
The nosing of each riser should not have any abrupt undersides as shown Figure 12(b), and should not project 25mm over the back edge of the step as shown in Figure 12(c). To add further safety, all steps have to fitted with non-slip strips between 50mm and 60mm wide with permanent contrasting colours.

Detectable warning surface
Tactile warning strips shall be provided at the top, bottom and intermediate landings, or must not extend the full width of the stairs, and must consist of flooring material that is contrasting in colour and of different texture from the surrounding material.

 

Picture15 Picture16
Figure 12(b) Figure 12(c)

HANDRAIL

As with the hand rails for ramps, the handrails for the staircase shall comply with the similar regulations. As shown in Figures 13 & 14.

 

Picture17 Picture18
Figure 13 Figure 14

 

Ref: http://www.bca.gov.sg/BarrierFree/others/AccessibilityCode2007.pdf