Recommended Slopes for All
Wheelchair Ramps



Ramp

Ramp

Best Ramp Rise

Maximum

Maximum
 
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 Threshold16" x 36" 
1 1/2" 
2 5/8" 
4"  
BAR2436 
Bariatric Threshold24" x 36" 
2" 
4" 
6"  
BAR536 
Bariatric Multifold5' x 36" 
5" 
10" 
15"  
BAR636 
Bariatric Multifold6' x 36" 
6" 
12" 
18"  
BAR736 
Bariatric Multifold7' x 36" 
7" 
14" 
21"  
BAR836 
Bariatric Multifold8' x 36" 
8" 
16" 
24"  
BPR348 
Bariatric Panel Ramp3' x 48" 
3" 
6" 
9"  
BPR448 
Bariatric Panel Ramp4' x 48" 
4" 
8" 
12"  
BPR548 
Bariatric Panel Ramp5' x 48" 
5" 
10" 
15"  
BPR648 
Bariatric Panel Ramp6' 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 18772587423
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.