Width
- Measure width needed to accommodate tires. (See Figure 1)
- Uline offers 18 and 24" ramps. If semi has dual wheels, 24" wide Wheel Riser Ramps are recommended.
Height
Calculate height needed to elevate trailer tailgate to meet dock.
NOTE: Based on location of rear wheel, trailer tailgate could rise more than ramp's actual height.
Use steps below to determine required riser height:
A + B = C
A = Height of Trailer + Height of Riser Ramp at center of back wheel.
B = Measure length from center of back wheel to tailgate and multiply by rise that corresponds to your ramp and truck sizes:
| RAMP HEIGHT | 12-19 FOOT BOX TRUCK | 20-26 FOOT BOX TRUCK |
|---|---|---|
| 6" Tall | Add 1/2" Rise per Foot | Add 5/16" Rise per Foot |
| 8" Tall | Add 5/8" Rise per Foot | Add 7/16" Rise per Foot |
| 12" Tall | Add 1" Rise per Foot | Add 9/16" Rise per Foot |
C = Height of Tailgate where it meets dock.
Length
Confirm the length will work for your needs and make your final product selection.
| PRODUCT SELECTION CHART | ||||
|---|---|---|---|---|
| MODEL NO. | WIDTH | HEIGHT | LENGTH | LEVEL LENGTH |
| H-4189 | 18" | 6" | 48" | 30" |
| H-4190 | 18" | 8" | 54" | 30" |
| H-4191 | 24" | 6" | 48" | 30" |
| H-4192 | 24" | 12" | 72" | 36" |
NOTE: Guide is intended for docks with flat surface. An incline or decline could affect measurements and product performance.
12/21/2024 11:10:27 PM;
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