PROFESSIONAL CUSTOMER SERVICE 1-877-258-7423

 

 

Recommended Slopes for All
Wheelchair Ramps

 

ramp slope guide

 

1:12 ramp slope ratio

1:12 Ratio
ADA recommended slope for public access & walking elderly.
2:12 ramp slope ratio

2:12 Ratio
Maximum ramp slope recommended for residential use
with assistant.
3:12 ramp slope ratio
3:12 Ratio
Maximum ramp slope recommended for loading unoccupied wheelchairs.
Ramp
Item Number
Ramp
Description
Best Ramp Rise
1:12 ratio
Maximum
Rise For
Occupied Wheelchairs
2:12 ratio
Maximum
Rise For Unoccupied Wheelchairs 3:12 ratio
SFW230
Singlefold 2' x 30"
2"
4"
6"
SFW330
Singlefold 3' x 30"
3"
6"
9"
SFW430
Singlefold 4' x 30"
4"
8"
12"
SFW530
Singlefold 5' x 30"
5"
10"
15"
SFW630
Singlefold 6' x 30"
6"
12"
18"
WCR530
Multifold 5' x 30"
5"
10"
15"
WCR630
Multifold 6' x 30"
6"
12"
18"
WCR730
Multifold 7' x 30"
7"
14"
21"
WCR830
Multifold 8' x 30"
8"
16"
24"
WC1030
Multifold 10' x 30"
10"
20"
30"
WC1230
Multifold 12' x 30"
12"
24"
36"
UTW630
Utility Ramp 6' x 30"
6"
12"
18"
UTW730
Utility Ramp 7' x 30"
7"
14"
21"
UTW830
Utility Ramp 8' x 30"
8"
16"
24"
UTW1030
Utility Ramp 10' x 30"
10"
20"
30"
THR832
Threshold 8" x 32"
5/8"
1 3/8"
2"
TH1032
Threshold 10" x 32"
7/8"
1 5/8"
2 1/2"
TH1232
Threshold 12" x 32"
1"
2"
3"
TH1632
Threshold 16" x 32"
1 1/2"
2 5/8"
4"
TH1636
Threshold 16" x 36"
1 1/2"
2 5/8"
4"
TH2432
Threshold 24" x 32"
2"
4"
6"
TH2436
Threshold 24" x 36"
2"
4"
6"
SL330
Solid 3' x 30"
3"
6"
9"
SL336
Solid 3' x 36"
3"
6"
9"
SL430
Solid 4' x 30"
4"
8"
12"
SL436
Solid 4' x 36"
4"
8"
12"
SL530
Solid 5' x 30"
5"
10"
15"
SL536
Solid 5' x 36"
5"
10"
15"
BAR1636
Bariatric Threshold
16" x 36"
1 1/2"
2 5/8"
4"
BAR2436
Bariatric Threshold
24" x 36"
2"
4"
6"
BAR536
Bariatric Multifold
5' x 36"
5"
10"
15"
BAR636
Bariatric Multifold
6' x 36"
6"
12"
18"
BAR736
Bariatric Multifold
7' x 36"
7"
14"
21"
BAR836
Bariatric Multifold
8' x 36"
8"
16"
24"
BPR348
Bariatric Panel Ramp
3' x 48"
3"
6"
9"
BPR448
Bariatric Panel Ramp
4' x 48"
4"
8"
12"
BPR548
Bariatric Panel Ramp
5' x 48"
5"
10"
15"
BPR648
Bariatric Panel Ramp
6' x 48"
6"
12"
18"

To determine the length of ramp for your application, first you need to determine the rise. The rise is the vertical measurement between the ground and where the top of the ramp is going to sit.

Disability Systems recommends a 1:12 slope on most applications. Residential applications can use a 2:12 slope ratio if space is a problem. For commercial public access, check your state code.

To find a 2:12 slope take total amount of rise and divide by 2. If you have a 12 inch rise divide by 2 and the resulting number would be the length of ramp which is required in feet or you would need a 6 foot ramp.

A 1:12 slope would require a ramp that is the same length as your rise. A 1:12 slope for a 12 inch rise would need a 12 foot ramp. One inch of rise means one foot of ramp.

NOTE: Consideration must be taken if the ground is not level and slopes away from the rise where the ramp will be placed. Also be aware that ramps that will be used for walking by the elderly should be 1:12 and have handrails. Please contact Disability Systems, Inc. at 1-877-258-7423 for help in determining your needs.
 

Some States have changed the requirements regarding the width of modular ramps for commercial public access. Although the ADA recommends a 36 inch minimum width, some states have adopted other minimum widths. Please check with your local government to determine what the laws are for your area. This does not apply to private residences. We can supply you with widths up to 48" on our modular ramps in order to meet local requirements.