How to Choose Aluminum Loading Ramps: Length and Capacity

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Banner titled How to Choose Aluminum Loading Ramps showing a 30 inch deck with a 6 foot ramp at about 25 degrees and a 12 foot ramp at about 12 degrees, drawn to scale.

Match aluminum ramps to three things: the deck height you are loading onto, the weight you are rolling up, and the end type for where the ramps attach. Longer ramps give a shallower loading angle. Capacity depends on the rating of each ramp and of the pair together, not on length.

What to look for in aluminum ramps

  • Material. All-aluminum construction. The weight saving is the point: the 6 foot pair of Heavy-Duty Aluminum Loading Ramps in the 3,000 lbs per ramp configuration (GH-16072) is listed at 72 lbs, and the 8 foot foldable pair at 120 lbs, which GEN-Y says makes the ramps easier to lift, carry, and store.
  • Capacity. Every GEN-Y ramp page gives two numbers, one per ramp and one per set. Both are limits. Check which one you are reading before you compare anything.
  • Length. Length decides the loading angle for a given deck height, and it limits which capacity ratings you can order. The part number decides which of those you get.
  • Width. Ramp widths run from 11 inches on the shed ramps to 45 inches on the trifold. Match the width to the track of what you are loading.
  • Traction. Wide plate-style serrated cross rungs run the length of every GEN-Y ramp family, which the product pages say provide traction in wet or muddy conditions.
  • End type. The heavy-duty and foldable ramps use hybrid hook-and-plate ends, designed to hook straight onto a car hauler trailer deck.

How to choose the right length

Measure your deck height first. GEN-Y publishes a deck height range for most of its ramps:

  • Heavy-duty and foldable ramps: 15 to 36 inches
  • Arched ramps: 12 to 30 inches
  • Shed ramps: 6 to 18 inches

Range bars of published deck heights by ramp family. Heavy-duty and foldable ramps 15 to 36 inches, arched ramps 12 to 30 inches, shed ramps 6 to 18 inches. Light-duty and trifold ramps have no published range, so match them to your deck by measurement.

The light-duty and trifold ramps have no published range, so match those to your deck by measurement.

GEN-Y's product page says longer ramps give a gentler loading angle.

You can work out the angle yourself. Divide the deck height by the ramp length, both in inches, then take the inverse sine of the result.

Worked through: a 30 inch deck with an 8 foot ramp is 30 divided by 96 inches, which is 0.3125, and the inverse sine of 0.3125 is about 18 degrees. Put a 12 foot ramp against the same deck and it is 30 divided by 144, or about 12 degrees. Same load, same trailer, six degrees of difference.

At a 30 inch deck height, here is how the whole range compares.

Ramp length Loading angle at a 30 inch deck
6 ft (72 inches) about 25 degrees
7 ft (84 inches) about 21 degrees
8 ft (96 inches) about 18 degrees
10 ft (120 inches) about 14 degrees
12 ft (144 inches) about 12 degrees
14 ft (168 inches) about 10 degrees

Six ramp lengths drawn to scale against a 30 inch deck. 6 foot about 25 degrees, 7 foot about 21, 8 foot about 18, 10 foot about 14, 12 foot about 12, 14 foot about 10. Angle is the inverse sine of deck height divided by ramp length. This is arithmetic, not a GEN-Y rating.

Those figures are our arithmetic from the two measurements, not a GEN-Y rating. GEN-Y publishes no maximum loading angle, so the clearance question is one to settle against your own vehicle or equipment before you buy.

How to read the capacity rating

Two numbers, and they are easy to confuse. Per ramp is what one ramp carries. Per pair, which GEN-Y also calls per set, is the two together, and it is double the per ramp figure.

Both are limits, and they work at the same time. The whole load has to stay under the per pair figure, and the weight on any one ramp has to stay under the per ramp figure. If what you are loading goes up a single ramp, which is how a motorcycle usually goes up, the per ramp number is the one that governs.

Two halves comparing per pair and per ramp capacity. Per pair is the limit for the whole load across both ramps. Per ramp is the limit for the weight on any one ramp, and it governs when a load goes up a single ramp like a motorcycle. A heavy-duty 8 foot pair rated 14,000 pounds is 7,000 pounds per ramp.

Here is what that looks like across most of the heavy-duty line:

Length Per ramp Per pair Part number
6 ft 3,000 lbs 6,000 lbs GH-16072
6 ft 5,000 lbs 10,000 lbs GH-17072
8 ft 5,000 lbs 10,000 lbs GH-16096
8 ft 7,000 lbs 14,000 lbs GH-17096
10 ft 5,000 lbs 10,000 lbs GH-16120
10 ft 7,000 lbs 14,000 lbs GH-17120
14 ft 4,000 lbs 8,000 lbs GH-16168

Bars of per pair capacity for heavy-duty aluminum ramps by length and part number. 6 foot 6,000 and 10,000 pounds, 8 foot 10,000 and 14,000, 10 foot 10,000 and 14,000, 14 foot 8,000. The highest-rated pairs are the 8 and 10 foot at 14,000 pounds, while the longest pair is rated 8,000 pounds.

Read down the table and the useful point jumps out: the highest-rated pairs are 8 and 10 feet, at 14,000 lbs, while the longest pair on offer, the 14 foot, is rated 8,000 lbs. Several lengths also come in two ratings, so a 6 foot pair can be 6,000 lbs or 10,000 lbs depending on which part number you order.

That gives you the order of work. Pick the length that gives you an angle your equipment can clear, then check what that particular configuration is rated for, and order the part number that covers your load.

Ramp types compared

Family Length Width Capacity Deck height Built for
Heavy-Duty Aluminum Loading Ramps 6, 7, 8, 10, 12, or 14 ft not listed 3,000 to 7,000 lbs per ramp, 6,000 to 14,000 lbs per pair 15 to 36 inches Low-clearance, single-vehicle car hauler trailers
Foldable Aluminum Loading Ramps 8 ft, folding to 4 ft 15 inches See the product page 15 to 36 inches Loading onto car hauler trailer decks, in a folding design
Light-Duty Aluminum Loading Ramps 78 inches or 94 inches 12 inches 600 lbs per ramp (1,200 per set) or 750 lbs per ramp (1,500 per set) not listed Motorcycles, ATVs, and lawn equipment
Aluminum Arched Ramps 94 inches 12 inches 750 lbs per ramp, 1,500 lbs per set 12 to 30 inches The same loads, in an arched design
Aluminum Trifold Ramps 69 inches 45 inches 1,500 lbs per ramp (the page also lists 1 set as 3,000 lbs) not listed ATVs and smaller equipment, folding down for storage
Aluminum Shed Ramps 40 inches 11 inches 600 lbs per ramp, 1,200 lbs per set 6 to 18 inches Lawn equipment and other small wheeled vehicles

Every family above is made in the USA and carries a limited lifetime warranty. If you damage one ramp rather than the pair, there are replacement single ramps for the heavy-duty line in every length.

Six GEN-Y aluminum ramp families side by side. Heavy-Duty 6 to 14 feet, 3,000 to 7,000 pounds per ramp. Foldable 8 feet folding to 4 feet. Light-Duty 78 or 94 inches, 600 or 750 pounds per ramp. Arched 94 inches, 750 pounds per ramp. Trifold 69 inches long and 45 inches wide, 1,500 pounds per ramp. Shed 40 inches, 600 pounds per ramp.

Safe loading basics

GEN-Y publishes the same four rules on every ramp page:

  1. Use the ramps only for their intended purpose.
  2. Secure the ramps properly to the vehicle or trailer before loading.
  3. Store the ramps properly on the vehicle or trailer before moving.
  4. Never let the loading weight exceed the ramps' rating.

Four loading rules published on every GEN-Y ramp page: use the ramps only for their intended purpose, secure them to the vehicle or trailer before loading, store them properly before moving, and never let the loading weight exceed the rating. Exceeding the rating on heavy-duty ramps is not covered by the limited lifetime warranty.

The fourth one carries a consequence beyond the obvious. On the heavy-duty ramps, GEN-Y states that exceeding the rated weight is not covered under the limited lifetime warranty. Beyond these four rules, GEN-Y publishes no further loading guidance. For the wider pre-tow routine, our towing equipment safety checklist covers what to walk round before you pull away.

Where to go next

Measure your deck height, work out the angle your load needs, then match the rating to your part number. The full range of aluminum loading ramps covers 40 inch shed ramps up to 14 foot heavy-duty pairs, all made in the USA. To buy in person, use the GEN-Y HITCH dealer finder or call (574) 218-6363.

Frequently Asked Questions

What length of aluminum ramp do I need for my truck or trailer?

Start with your deck height, then pick the length that gives an angle your load can clear. The heavy-duty and foldable ramps are rated for decks of 15 to 36 inches, the arched ramps for 12 to 30 inches, and the shed ramps for 6 to 18 inches. At a 30 inch deck, a 6 foot ramp sits at roughly 25 degrees and a 12 foot ramp at roughly 12 degrees, on the arithmetic above.

Is the ramp capacity per ramp or per pair?

GEN-Y lists both, so read the label on the number. A heavy-duty 8 foot pair rated 14,000 lbs is 7,000 lbs per ramp. The light-duty 94 inch ramps are 750 lbs per ramp, which is 1,500 lbs per set. Both figures are limits at the same time: keep the whole load under the per pair rating, and the weight on each ramp under the per ramp rating. If your load goes up a single ramp, as a motorcycle does, the per ramp figure is your ceiling, not the set figure.

Are aluminum ramps as strong as steel ramps?

Strength comes from the rating, not from the metal in the name. GEN-Y's heavy-duty aluminum ramps are rated up to 7,000 lbs per ramp and 14,000 lbs per pair, and they are welded by certified AWS welders. What aluminum changes is the handling, and GEN-Y's own comparison is that its sets weigh significantly less than a comparable steel ramp. GH-16072, the 6 foot pair rated 3,000 lbs per ramp, is listed at 72 lbs, which GEN-Y says makes the ramps easier to lift, carry, and store.

How do I attach ramps to my trailer or truck?

On the heavy-duty and foldable sets, the ends are a hybrid hook and plate design that hooks straight onto a car hauler trailer deck, built for low-clearance, single-vehicle car haulers. GEN-Y does not publish guidance for attaching to a pickup tailgate, and the lighter families have no published end type at all, so check the fit against your own deck or gate before loading. Whichever ramps you use, the rule on every GEN-Y ramp page is the same: get them secured before anything rolls onto them.

How do I store aluminum ramps?

Stow them on the vehicle or trailer, properly secured, before you move off. GEN-Y lists that as a rule rather than a suggestion. If storage space is what is driving your choice, the foldable ramps fold from 8 feet down to 4 feet, and the trifold ramps fold down for the same reason.

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