Ramp Angles

Table: angle for every 12 units of run
0.25	1.19º	2.1%	Shallower than ADA recommendations
0.50	2.39º	4.2%
0.75	3.58º	6.3%
1.00	4.76º	8.3%	Matches ADA recommendations
1.25	5.95º	10.4%	Steeper than ADA recommendations
1.50	7.13º	12.5%
1.75	8.30º	14.6%
2.00	9.46º	16.7%
2.25	10.62º	18.8%	Too steep for some power wheelchairs
2.50	11.77º	20.8%
2.75	12.91º	22.9%
3.00	14.04º	25.0%	Only suitable for small bumps and thresholds
3.25	15.15º	27.1%
3.50	16.26º	29.2%
3.75	17.35º	31.3%
4.00	18.43º	33.3%
4.25	19.50º	35.4%
4.50	20.56º	37.5%
4.75	21.60º	39.6%
5.00	22.62º	41.7%
5.25	23.63º	43.8%
5.50	24.62º	45.8%
5.75	25.60º	47.9%
6.00	26.57º	50.0%
6.25	27.51º	52.1%
6.50	28.44º	54.2%
6.75	29.36º	56.3%
7.00	30.26º	58.3%
7.25	31.14º	60.4%
7.50	32.01º	62.5%
7.75	32.86º	64.6%
8.00	33.69º	66.7%

Table: angle for every 10 units of run
0.25	1.43º	2.5%	Shallower than ADA recommendations
0.50	2.86º	5.0%
0.75	4.29º	7.5%
1.00	5.71º	10.0%	Steeper than ADA recommendations
1.25	7.13º	12.5%
1.50	8.53º	15.0%
1.75	9.93º	17.5%
2.00	11.31º	20.0%	Too steep for some power wheelchairs
2.25	12.68º	22.5%
2.50	14.04º	25.0%
2.75	15.38º	27.5%
3.00	16.70º	30.0%	Only suitable for small bumps and thresholds
3.25	18.00º	32.5%
3.50	19.29º	35.0%
3.75	20.56º	37.5%
4.00	21.80º	40.0%
4.25	23.03º	42.5%
4.50	24.23º	45.0%
4.75	25.41º	47.5%
5.00	26.57º	50.0%
5.25	27.70º	52.5%
5.50	28.81º	55.0%
5.75	29.90º	57.5%
6.00	30.96º	60.0%
6.25	32.01º	62.5%
6.50	33.02º	65.0%
6.75	34.02º	67.5%
7.00	34.99º	70.0%
7.25	35.94º	72.5%
7.50	36.87º	75.0%
7.75	37.78º	77.5%
8.00	38.66º	80.0%

Table: Ramp angle based on ramp length and rise
1.0"	4.8˚	2.4˚	1.6˚	1.2˚	1.0˚	0.8˚	0.7˚	0.6˚	0.5˚	0.5˚
1.5"	7.2˚	3.6˚	2.4˚	1.8˚	1.4˚	1.2˚	1.0˚	0.9˚	0.8˚	0.7˚
2.0"	9.6˚	4.8˚	3.2˚	2.4˚	1.9˚	1.6˚	1.4˚	1.2˚	1.1˚	1.0˚
2.5"	12.0˚	6.0˚	4.0˚	3.0˚	2.4˚	2.0˚	1.7˚	1.5˚	1.3˚	1.2˚
3.0"	14.5˚	7.2˚	4.8˚	3.6˚	2.9˚	2.4˚	2.0˚	1.8˚	1.6˚	1.4˚
3.5"	17.0˚	8.4˚	5.6˚	4.2˚	3.3˚	2.8˚	2.4˚	2.1˚	1.9˚	1.7˚
4.0"	19.5˚	9.6˚	6.4˚	4.8˚	3.8˚	3.2˚	2.7˚	2.4˚	2.1˚	1.9˚
4.5"	22.0˚	10.8˚	7.2˚	5.4˚	4.3˚	3.6˚	3.1˚	2.7˚	2.4˚	2.1˚
5.0"		12.0˚	8.0˚	6.0˚	4.8˚	4.0˚	3.4˚	3.0˚	2.7˚	2.4˚
5.5"		13.2˚	8.8˚	6.6˚	5.3˚	4.4˚	3.8˚	3.3˚	2.9˚	2.6˚
6.0"		14.5˚	9.6˚	7.2˚	5.7˚	4.8˚	4.1˚	3.6˚	3.2˚	2.9˚
6.5"		15.7˚	10.4˚	7.8˚	6.2˚	5.2˚	4.4˚	3.9˚	3.5˚	3.1˚
7.0"		17.0˚	11.2˚	8.4˚	6.7˚	5.6˚	4.8˚	4.2˚	3.7˚	3.3˚
7.5"		18.2˚	12.0˚	9.0˚	7.2˚	6.0˚	5.1˚	4.5˚	4.0˚	3.6˚
8.0"		19.5˚	12.8˚	9.6˚	7.7˚	6.4˚	5.5˚	4.8˚	4.2˚	3.8˚
8.5"		20.7˚	13.7˚	10.2˚	8.1˚	6.8˚	5.8˚	5.1˚	4.5˚	4.1˚
9.0"		22.0˚	14.5˚	10.8˚	8.6˚	7.2˚	6.2˚	5.4˚	4.8˚	4.3˚
9.5"			15.3˚	11.4˚	9.1˚	7.6˚	6.5˚	5.7˚	5.0˚	4.5˚
10.0"			16.1˚	12.0˚	9.6˚	8.0˚	6.8˚	6.0˚	5.3˚	4.8˚
10.5"			17.0˚	12.6˚	10.1˚	8.4˚	7.2˚	6.3˚	5.6˚	5.0˚
11.0"			17.8˚	13.2˚	10.6˚	8.8˚	7.5˚	6.6˚	5.8˚	5.3˚
11.5"			18.6˚	13.9˚	11.1˚	9.2˚	7.9˚	6.9˚	6.1˚	5.5˚
12.0"			19.5˚	14.5˚	11.5˚	9.6˚	8.2˚	7.2˚	6.4˚	5.7˚
12.5"			20.3˚	15.1˚	12.0˚	10.0˚	8.6˚	7.5˚	6.6˚	6.0˚
13.0"			21.2˚	15.7˚	12.5˚	10.4˚	8.9˚	7.8˚	6.9˚	6.2˚
13.5"			22.0˚	16.3˚	13.0˚	10.8˚	9.2˚	8.1˚	7.2˚	6.5˚
14.0"				17.0˚	13.5˚	11.2˚	9.6˚	8.4˚	7.4˚	6.7˚
14.5"				17.6˚	14.0˚	11.6˚	9.9˚	8.7˚	7.7˚	6.9˚
15.0"				18.2˚	14.5˚	12.0˚	10.3˚	9.0˚	8.0˚	7.2˚
15.5"				18.8˚	15.0˚	12.4˚	10.6˚	9.3˚	8.3˚	7.4˚
16.0"				19.5˚	15.5˚	12.8˚	11.0˚	9.6˚	8.5˚	7.7˚
16.5"				20.1˚	16.0˚	13.2˚	11.3˚	9.9˚	8.8˚	7.9˚
17.0"				20.7˚	16.5˚	13.7˚	11.7˚	10.2˚	9.1˚	8.1˚
17.5"				21.4˚	17.0˚	14.1˚	12.0˚	10.5˚	9.3˚	8.4˚
18.0"				22.0˚	17.5˚	14.5˚	12.4˚	10.8˚	9.6˚	8.6˚
20.0"					19.5°	16.1°	13.8°	12.0°	10.7°	9.6°
22.0"					21.5°	17.8°	15.2°	13.2°	11.8°	10.6°
24.0"					23.6°	19.5°	16.6°	14.5°	12.8°	11.5°
26.0"					25.7°	21.2°	18.0°	15.7°	13.9°	12.5°
28.0"					27.8°	22.9°	19.5°	17.0°	15.0°	13.5°
30.0"					30.0°	24.6°	20.9°	18.2°	16.1°	14.5°
32.0"					32.2°	26.4°	22.4°	19.5°	17.2°	15.5°
34.0"					34.5°	28.2°	23.9°	20.7°	18.3°	16.5°
36.0"					36.9°	30.0°	25.4°	22.0°	19.5°	17.5°
38.0"					39.3°	31.9°	26.9°	23.3°	20.6°	18.5°
40.0"					41.8°	33.7°	28.4°	24.6°	21.7°	19.5°
42.0"					44.4°	35.7°	30.0°	25.9°	22.9°	20.5°
44.0"					47.2°	37.7°	31.6°	27.3°	24.0°	21.5°
46.0"					50.1°	39.7°	33.2°	28.6°	25.2°	22.5°
48.0"					53.1°	41.8°	34.8°	30.0°	26.4°	23.6°

Table: Force needed to push a 200 lb (91kg) wheelchair up a ramp
0.5°	1.7 lb (0.8 kg)
1.0°	3.5 lb (1.6 kg)
1.5°	5.2 lb (2.4 kg)
2.0°	7.0 lb (3.2 kg)
2.5°	8.7 lb (3.9 kg)
3.0°	10.5 lb (4.8 kg)
3.5°	12.2 lb (5.5 kg)
4.0°	14.0 lb (6.4 kg)
4.5°	15.7 lb (7.1 kg)
5.0°	17.4 lb (7.9 kg)
5.5°	19.2 lb (8.7 kg)
6.0°	20.9 lb (9.5 kg)
6.5°	22.7 lb (10.3 kg)
7.0°	24.4 lb (11.1 kg)
7.5°	26.2 lb (11.9 kg)
8.0°	27.9 lb (12.7 kg)
8.5°	29.6 lb (13.4 kg)
9.0°	31.4 lb (14.2 kg)
9.5°	33.1 lb (15.0 kg)
10.0°	34.8 lb (15.8 kg)
10.5°	36.6 lb (16.6 kg)
11.0°	38.3 lb (17.4 kg)
11.5°	40.0 lb (18.1 kg)
12.0°	41.8 lb (18.9 kg)
12.5°	43.5 lb (19.7 kg)
13.0°	45.2 lb (20.5 kg)
13.5°	46.9 lb (21.3 kg)
14.0°	48.7 lb (22.1 kg)
14.5°	50.4 lb (22.9 kg)
15.0°	52.1 lb (23.7 kg)
15.5°	53.8 lb (24.4 kg)
16.0°	55.5 lb (25.2 kg)
16.5°	57.3 lb (26.0 kg)
17.0°	59.0 lb (26.8 kg)
17.5°	60.7 lb (27.5 kg)
18.0°	62.4 lb (28.3 kg)
18.5°	64.1 lb (29.1 kg)
19.0°	65.8 lb (29.8 kg)
19.5°	67.5 lb (30.6 kg)
20.0°	69.2 lb (31.4 kg)
20.5°	70.9 lb (32.2 kg)
21.0°	72.5 lb (32.9 kg)
21.5°	74.2 lb (33.7 kg)
22.0°	75.9 lb (34.4 kg)
22.5°	77.6 lb (35.2 kg)

Table: angle for every 12 units of run
Rise	Angle	Grade	Notes
0.25	1.19º	2.1%	Shallower than ADA recommendations
0.50	2.39º	4.2%
0.75	3.58º	6.3%
1.00	4.76º	8.3%	Matches ADA recommendations
1.25	5.95º	10.4%	Steeper than ADA recommendations
1.50	7.13º	12.5%
1.75	8.30º	14.6%
2.00	9.46º	16.7%
2.25	10.62º	18.8%	Too steep for some power wheelchairs
2.50	11.77º	20.8%
2.75	12.91º	22.9%
3.00	14.04º	25.0%	Only suitable for small bumps and thresholds
3.25	15.15º	27.1%
3.50	16.26º	29.2%
3.75	17.35º	31.3%
4.00	18.43º	33.3%
4.25	19.50º	35.4%
4.50	20.56º	37.5%
4.75	21.60º	39.6%
5.00	22.62º	41.7%
5.25	23.63º	43.8%
5.50	24.62º	45.8%
5.75	25.60º	47.9%
6.00	26.57º	50.0%
6.25	27.51º	52.1%
6.50	28.44º	54.2%
6.75	29.36º	56.3%
7.00	30.26º	58.3%
7.25	31.14º	60.4%
7.50	32.01º	62.5%
7.75	32.86º	64.6%
8.00	33.69º	66.7%

Table: Ramp angle based on ramp length and rise
	Ramp length (feet)
Rise (inches) ↓	1'	2'	3'	4'	5'	6'	7'	8'	9'	10'
1.0"	4.8˚	2.4˚	1.6˚	1.2˚	1.0˚	0.8˚	0.7˚	0.6˚	0.5˚	0.5˚
1.5"	7.2˚	3.6˚	2.4˚	1.8˚	1.4˚	1.2˚	1.0˚	0.9˚	0.8˚	0.7˚
2.0"	9.6˚	4.8˚	3.2˚	2.4˚	1.9˚	1.6˚	1.4˚	1.2˚	1.1˚	1.0˚
2.5"	12.0˚	6.0˚	4.0˚	3.0˚	2.4˚	2.0˚	1.7˚	1.5˚	1.3˚	1.2˚
3.0"	14.5˚	7.2˚	4.8˚	3.6˚	2.9˚	2.4˚	2.0˚	1.8˚	1.6˚	1.4˚
3.5"	17.0˚	8.4˚	5.6˚	4.2˚	3.3˚	2.8˚	2.4˚	2.1˚	1.9˚	1.7˚
4.0"	19.5˚	9.6˚	6.4˚	4.8˚	3.8˚	3.2˚	2.7˚	2.4˚	2.1˚	1.9˚
4.5"	22.0˚	10.8˚	7.2˚	5.4˚	4.3˚	3.6˚	3.1˚	2.7˚	2.4˚	2.1˚
5.0"		12.0˚	8.0˚	6.0˚	4.8˚	4.0˚	3.4˚	3.0˚	2.7˚	2.4˚
5.5"		13.2˚	8.8˚	6.6˚	5.3˚	4.4˚	3.8˚	3.3˚	2.9˚	2.6˚
6.0"		14.5˚	9.6˚	7.2˚	5.7˚	4.8˚	4.1˚	3.6˚	3.2˚	2.9˚
6.5"		15.7˚	10.4˚	7.8˚	6.2˚	5.2˚	4.4˚	3.9˚	3.5˚	3.1˚
7.0"		17.0˚	11.2˚	8.4˚	6.7˚	5.6˚	4.8˚	4.2˚	3.7˚	3.3˚
7.5"		18.2˚	12.0˚	9.0˚	7.2˚	6.0˚	5.1˚	4.5˚	4.0˚	3.6˚
8.0"		19.5˚	12.8˚	9.6˚	7.7˚	6.4˚	5.5˚	4.8˚	4.2˚	3.8˚
8.5"		20.7˚	13.7˚	10.2˚	8.1˚	6.8˚	5.8˚	5.1˚	4.5˚	4.1˚
9.0"		22.0˚	14.5˚	10.8˚	8.6˚	7.2˚	6.2˚	5.4˚	4.8˚	4.3˚
9.5"			15.3˚	11.4˚	9.1˚	7.6˚	6.5˚	5.7˚	5.0˚	4.5˚
10.0"			16.1˚	12.0˚	9.6˚	8.0˚	6.8˚	6.0˚	5.3˚	4.8˚
10.5"			17.0˚	12.6˚	10.1˚	8.4˚	7.2˚	6.3˚	5.6˚	5.0˚
11.0"			17.8˚	13.2˚	10.6˚	8.8˚	7.5˚	6.6˚	5.8˚	5.3˚
11.5"			18.6˚	13.9˚	11.1˚	9.2˚	7.9˚	6.9˚	6.1˚	5.5˚
12.0"			19.5˚	14.5˚	11.5˚	9.6˚	8.2˚	7.2˚	6.4˚	5.7˚
12.5"			20.3˚	15.1˚	12.0˚	10.0˚	8.6˚	7.5˚	6.6˚	6.0˚
13.0"			21.2˚	15.7˚	12.5˚	10.4˚	8.9˚	7.8˚	6.9˚	6.2˚
13.5"			22.0˚	16.3˚	13.0˚	10.8˚	9.2˚	8.1˚	7.2˚	6.5˚
14.0"				17.0˚	13.5˚	11.2˚	9.6˚	8.4˚	7.4˚	6.7˚
14.5"				17.6˚	14.0˚	11.6˚	9.9˚	8.7˚	7.7˚	6.9˚
15.0"				18.2˚	14.5˚	12.0˚	10.3˚	9.0˚	8.0˚	7.2˚
15.5"				18.8˚	15.0˚	12.4˚	10.6˚	9.3˚	8.3˚	7.4˚
16.0"				19.5˚	15.5˚	12.8˚	11.0˚	9.6˚	8.5˚	7.7˚
16.5"				20.1˚	16.0˚	13.2˚	11.3˚	9.9˚	8.8˚	7.9˚
17.0"				20.7˚	16.5˚	13.7˚	11.7˚	10.2˚	9.1˚	8.1˚
17.5"				21.4˚	17.0˚	14.1˚	12.0˚	10.5˚	9.3˚	8.4˚
18.0"				22.0˚	17.5˚	14.5˚	12.4˚	10.8˚	9.6˚	8.6˚
20.0"					19.5°	16.1°	13.8°	12.0°	10.7°	9.6°
22.0"					21.5°	17.8°	15.2°	13.2°	11.8°	10.6°
24.0"					23.6°	19.5°	16.6°	14.5°	12.8°	11.5°
26.0"					25.7°	21.2°	18.0°	15.7°	13.9°	12.5°
28.0"					27.8°	22.9°	19.5°	17.0°	15.0°	13.5°
30.0"					30.0°	24.6°	20.9°	18.2°	16.1°	14.5°
32.0"					32.2°	26.4°	22.4°	19.5°	17.2°	15.5°
34.0"					34.5°	28.2°	23.9°	20.7°	18.3°	16.5°
36.0"					36.9°	30.0°	25.4°	22.0°	19.5°	17.5°
38.0"					39.3°	31.9°	26.9°	23.3°	20.6°	18.5°
40.0"					41.8°	33.7°	28.4°	24.6°	21.7°	19.5°
42.0"					44.4°	35.7°	30.0°	25.9°	22.9°	20.5°
44.0"					47.2°	37.7°	31.6°	27.3°	24.0°	21.5°
46.0"					50.1°	39.7°	33.2°	28.6°	25.2°	22.5°
48.0"					53.1°	41.8°	34.8°	30.0°	26.4°	23.6°

Table: Force needed to push a 200 lb (91kg) wheelchair up a ramp
Ramp angle (degrees)	Force needed to push 200 lb (91kg)
0.5°	1.7 lb (0.8 kg)
1.0°	3.5 lb (1.6 kg)
1.5°	5.2 lb (2.4 kg)
2.0°	7.0 lb (3.2 kg)
2.5°	8.7 lb (3.9 kg)
3.0°	10.5 lb (4.8 kg)
3.5°	12.2 lb (5.5 kg)
4.0°	14.0 lb (6.4 kg)
4.5°	15.7 lb (7.1 kg)
5.0°	17.4 lb (7.9 kg)
5.5°	19.2 lb (8.7 kg)
6.0°	20.9 lb (9.5 kg)
6.5°	22.7 lb (10.3 kg)
7.0°	24.4 lb (11.1 kg)
7.5°	26.2 lb (11.9 kg)
8.0°	27.9 lb (12.7 kg)
8.5°	29.6 lb (13.4 kg)
9.0°	31.4 lb (14.2 kg)
9.5°	33.1 lb (15.0 kg)
10.0°	34.8 lb (15.8 kg)
10.5°	36.6 lb (16.6 kg)
11.0°	38.3 lb (17.4 kg)
11.5°	40.0 lb (18.1 kg)
12.0°	41.8 lb (18.9 kg)
12.5°	43.5 lb (19.7 kg)
13.0°	45.2 lb (20.5 kg)
13.5°	46.9 lb (21.3 kg)
14.0°	48.7 lb (22.1 kg)
14.5°	50.4 lb (22.9 kg)
15.0°	52.1 lb (23.7 kg)
15.5°	53.8 lb (24.4 kg)
16.0°	55.5 lb (25.2 kg)
16.5°	57.3 lb (26.0 kg)
17.0°	59.0 lb (26.8 kg)
17.5°	60.7 lb (27.5 kg)
18.0°	62.4 lb (28.3 kg)
18.5°	64.1 lb (29.1 kg)
19.0°	65.8 lb (29.8 kg)
19.5°	67.5 lb (30.6 kg)
20.0°	69.2 lb (31.4 kg)
20.5°	70.9 lb (32.2 kg)
21.0°	72.5 lb (32.9 kg)
21.5°	74.2 lb (33.7 kg)
22.0°	75.9 lb (34.4 kg)
22.5°	77.6 lb (35.2 kg)