Ramp Widths

ADA accessible ramps must maintain are ramp surfaces that must maintain regulated dimensions and be constructed as slip-resistant, stable, and firm systems.

ADA accessible ramps must maintain a minimum clear width of 36” (91.4 cm) at all times. The cross slope along the width of any ramp must be less than 1:50 or <2%. The 36” (91.4 cm) clear width must be maintained between all including handrails.

The maximum allowable slope in any new construction is 1:12 with a maximum rise of 30” (76.2 cm) without a landing. A ramp with a slope between 1:12 and 1:16 can have a maximum horizontal length of 30’ (9.14 m) without a landing. A ramp with a slope between 1:16 and 1:20 can have a horizontal run up to 40’ (12.19 m) before requiring a landing.

What is the minimum clear width of an ADA accessible ramp?
The minimum clear width of a ramp is 36” (91.4 cm).
What is the maximum cross slope of a ramp?
The maximum allowable cross sectional slope of a ramp must be less than 1:50 (< 2%).
How high are handrails along an ADA ramp?
Handrails along an ADA ramp must have a height between 34”-38” (86.4-96.5 cm) above the ramp surface. The minimum 36” (91.4 cm) clear width of a ramp must be maintained between handrails at all points.
Ramp Widths

Details

*Under Development*

Height:
Width:
Depth:
Length:
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Weight:
Area:
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Minimum Clear Width: 36” | 91.4 cm
Cross Slope: < 1:50
Handrail Height: 34”-38” | 86.4-96.5 cm

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Drawings include:
Ramp Width section (wheelchair user)

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Ramps are inclined surfaces that join different levels of a space. Commonly used at the entrances of buildings to accommodate level changes, ramps provide building access to wheelchair users. The maximum slope of a ramp is calculated to provide comfortable and easy access to the building.

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30” | 76.2 cm (Max)
30'-40' | 9.14-12.19 m (Max)
Ramp Slopes
76.200
1219.000
3800
https://p3d.in/e/DyDAX
GUIDE
3D
Ramp Slopes3D model of Ramp Slopes viewed in perspective3D model of Ramp Slopes viewed in perspective
4’ | 122 cm (Overall)
44” | 111.7 cm
18.7’ | 5.7 m (Total)
Ramp Handrails - Utility
122.000
111.700
570.000
1900
https://p3d.in/e/XzmYg
GUIDE
3D
Ramp Handrails - Utility3D model of Ramp Handrails (Utility) viewed in perspective3D model of Ramp Handrails (Utility) viewed in perspective
4.17’ | 127 cm (Overall)
49.5” | 125.7 cm
22.33’ | 6.81 m (Total)
Ramp Handrails - Wall
127.000
125.700
681.000
1900
https://p3d.in/e/zN4LY
GUIDE
3D
Ramp Handrails - WallView of Ramp Handrails (Wall) in 3D available for downloadView of Ramp Handrails (Wall) in 3D available for download
4.5’ | 137 cm (Overall)
45” | 114.3 cm
18.5’ | 5.64 m (Total)
Ramp Handrails - Vertical
137.000
114.300
564.000
1900
https://p3d.in/e/fojl6
GUIDE
3D
Ramp Handrails - VerticalPerspective view of a 3D model of Ramp Handrails (Vertical)Perspective view of a 3D model of Ramp Handrails (Vertical)
24” | 61 cm
7’ | 2.13 m (Overall)
38’ | 11.6 m (Total)
Ramp - Switchback
61.000
213.000
1160.000
420
https://p3d.in/e/pFlVK
GUIDE
3D
Ramp - Switchback3D model of Ramp (Switchback) viewed in perspective3D model of Ramp (Switchback) viewed in perspective
4”, 6” | 10.2, 15.2 cm
12’-15’ | 3.66,-4.57 m
48”, 60” | 121.9, 152.4 cm
Curb - Ramp, Parallel
15.200
457.000
152.400
90
https://p3d.in/e/WZfYv
GUIDE
3D
Curb - Ramp, Parallel3D model of a Parallel Curb Ramp viewed in perspective3D model of a Parallel Curb Ramp viewed in perspective
4”, 6” | 10.2, 15.2 cm
9”8”-14’ | 2.95-4.27 m (Overall)
48”, 72” | 121.9, 182.9 cm
Curb - Ramp, Built-Up
15.200
427.000
182.900
50
https://p3d.in/e/xTVjd
GUIDE
3D
Curb - Ramp, Built-UpView of a Built-Up Curb Ramp in 3D available for downloadView of a Built-Up Curb Ramp in 3D available for download
12” | 30.5 cm
36” | 91.4 cm
17’ | 5.18 m
Ramp - Straight
30.500
91.400
518.000
20
https://p3d.in/e/VfZkN
GUIDE
3D
Ramp - StraightView of Ramp (Straight) in 3D available for downloadView of Ramp (Straight) in 3D available for download
24” | 61 cm
17’ | 5.18 m (Overall)
36’ | 11 m (Total)
Ramp - Turning
61.000
518.000
1100.000
20
https://p3d.in/e/iUWGA
GUIDE
3D
Ramp - TurningPerspective view of a 3D model of Ramp (Turning)Perspective view of a 3D model of Ramp (Turning)
4”, 6” | 10.2, 15.2 cm
9”8”-14’ | 2.95-4.27 m (Overall)
48”, 72” | 121.9, 182.9 cm
Curb - Ramp, Flared
15.200
427.000
182.900
10
https://p3d.in/e/5oeHX
GUIDE
3D
Curb - Ramp, FlaredPerspective view of a 3D model of a Flared Curb RampPerspective view of a 3D model of a Flared Curb Ramp
4”, 6” | 10.2, 15.2 cm
36”, 48” | 91.4, 121.9 cm
48”, 72” | 121.9, 182.9 cm
Curb - Ramp, Returned
15.200
121.900
182.900
0
https://p3d.in/e/Y4xw3
GUIDE
3D
Curb - Ramp, ReturnedView of a Returned Curb Ramp in 3D available for downloadView of a Returned Curb Ramp in 3D available for download