The document discusses various design elements to make buildings accessible to all, including vertical circulation features like steps, stairs, ramps and lifts. It provides specifications and examples of accessible stair and ramp gradients, handrails, lifts of different sizes, and refuge spaces. The goal is universal design that considers people of all abilities.

1. U N I V E R S A L D E S I G N
GUWAHATI COLLEGE OF ARCHITECTURE & PLANNING
MAKING
DESIGN
ACCESSIBLE
TO
ALL
IN
SOCIETY
AR. BISWAJIT SHARMA
M.ARCH(UD), MBA(HR,IT)
সা ৰ্বজ নী ন প ৰি ক ল্প না
VERTICAL CIRCULATION

2. S
T
E
P
S
&
S
T
A
I
R
S External Steps
Tread: 400
Riser: 140
Tread: 450
Riser: 125
Tread: 550
Riser: 110
Internal Stairs
Tread: 300
Riser: 170
Tread: 350
Riser: 150
Tread: 400
Riser: 140
Stairs up to 2.7M height
Tread: 209
Riser: 208
Tread: 265
Riser: 180
Tread: 307
Riser: 159

3. S
T
E
P
S
&
S
T
A
I
R
S Handrails on Stairs
Supplementary high-level handrail to steep steps
Swimming pool stepped access
Handrail Profiles
Stairway planning, handrail extension

4. R
A
M
P
S
Ramp, 1:6 gradient, wheelchair user being pushed up
Ramp in compliance with 1:15 gradient with handrail and intermediate landing
Ramp in compliance with 1:12 gradient with handrail and intermediate landing
Ramp Gradiants
Ramp, 1:6 gradient, wheelchair user being helped down backwards

5. E
N
T
R
A
N
C
E
S Ramp Gradients
Ramped approaches to platforms at entrances to buildings. The examples shown satisfy requirements applicable to new public buildings
Ramped approaches to platforms at entrances to buildings. The examples shown satisfy requirements applicable to new housing

6. E
N
T
R
A
N
C
E
S
Ramp in place of single step at
shop entrance
Ramp in place of stepped platform
at shop entrance
Shop frontage altered to provide
ramped access
Single step aligned with shop
entrance door
Stepped and ramped approach to
shop entrance in place of single high
step aligned with shop entrance door
Shop where existing entrance
door has been replaced by
door with level access from
pedestrian footway. Recessed
doormat inside is ramped
beyond door swing to meet
shop floor level
Existing building where three steps at
entrance have been supplemented by
alternative ramped approach

7. L
I
F
T
S
Lifts size for Residences & Flats (4 persons)
Lifts size for Public buildings (8 persons)
Lifts size for Public buildings (10 persons) Lifts size for Public buildings (13 persons) Lifts size for Public buildings (16 persons)

8. P
L
AT
F
O
R
M
L
I
F
T
&
S
TA
I
R
L
I
F
T
S
Through-floor lift. Example of provision to be allowed for in planning of
Lifetime Homes
External wheelchair platform lift
Internal wheelchair platform lift
Chair stairlift
Stair wheelchair platform lift

9. E
S
C
A
L
ATO
R
&
R
E
F
U
G
E
S
PA
C
E
S
Refuge with one wheelchair space
Escalator with two run-on steps
Escalator with three run-on steps, affording more space for
people unsteady on their feet to stabilize themselves
Refuge with two wheelchair spaces