Getting heavy equipment to a job site is only half the challenge. The other half is getting it off the truck, railcar, or trailer and to its final position safely.
We regularly work with operators and facilities to help solve this problem.
- A transformer arrives on a flatbed, but the pad is still a hundred feet away.
- A piece of machinery shows up on a railcar, but the installation point is deep inside a building.
- Construction equipment is delivered to the entrance to an underground job site, but it’s too heavy for the transport methods already on hand.
Sometimes referred to as “the last mile,” these offloading situations are among the most hazardous stages of any heavy transport project.
In this article, we’ll cover your options for offloading heavy equipment safely, including:
- Hydraulic skidding
- Forklifts
- Cranes
- Ramps
- Jacking and cribbing
The Most Common Problems When Offloading Heavy Equipment
During transport, operators secure heavy equipment using a purpose-built vehicle. Often, the heavy equipment is loaded onto the truck, railcar, or trailer at a location equipped with ample space and heavy-lifting equipment — such as a shipping port with heavy-duty cranes.
Offloading the same equipment on-site is a different situation.
- Heavy lifting equipment may not be available
- Equipment may need to be offloaded and moved in tight spaces with little clearance or margin for error
- The delivery site may not have overhead clearance or the ability to bring in cranes
- Equipment may be fragile and sensitive to tilt, shock, or uneven support
The Last Mile: Getting Equipment to Its Final Destination
In many cases, the offloading point is not the final destination.
Operators often need to move the heavy equipment from the offloading location to its final pad, foundation, or installation point. We call this final stage from the offloading point to the final destination the “last mile,” and it is often the most difficult stage of the delivery.
5 Options for Offloading Heavy Equipment Safely
There is not one “best” offloading method for heavy equipment. Instead, you have a variety of field-proven options to choose from based on your situation.
Here are the five most common methods for offloading heavy equipment safely:
1. Hydraulic Skidding
Hydraulic skidding is a strong option for offloading heavy equipment in many situations. It is an especially strong option when the load needs to travel to a final position that the delivery vehicle cannot reach.
Here’s how it works.
Operators:
- Lift the equipment a few inches off the delivery vehicle using heavy-duty hydraulic jacks.
- Install skid tracks underneath the equipment.
- Place skid shoes on the skid tracks.
- Lower the equipment onto the shoes.
- Use hydraulic cylinders to push the load forward in short, controlled strokes. After each stroke, the system resets for the next push.
During this process, the load stays grounded and supported the entire time.
Operators control the system from a safe distance through hydraulic lines. There is no suspended lift, no swing, and no risk of a runaway load. When force stops being applied to the load, movement stops immediately.
This makes hydraulic skidding especially useful for solving the last-mile problem.
A heavy trailer handles the long-distance transport; the skidding system then safely moves the equipment from the transport vehicle to its final destination.
Hydraulic skidding systems are highly portable and easy to use. The equipment needed can be hand-carried, and new operators can be trained on the equipment in about a day.
2. Forklifts
If you have a forklift with a high enough capacity, this can be a simple and effective way to offload equipment.
Forklifts are widely available, most crews know how to operate them, and they can move a load from a vehicle to a staging area or its final destination.
The limitation of forklifts is straightforward: Forklifts only work if you have one with a high enough capacity for the load you’re trying to move.
We never advise using two forklifts together on a single load, as this introduces significant risk to the equipment, the surrounding environment, and forklift operators.
3. Cranes
Cranes are a common method for offloading heavy equipment from a transport vehicle.
Cranes are a strong option when operators have:
- Overhead space
- Stable ground for outriggers
- Favorable weather
- A crane on-site with high enough capacity
Cranes are not a great option when heavy equipment needs to be moved more than a few feet from the offloading location.
In those cases, a crane can safely offload the equipment from a delivery vehicle, but another option may be needed to transport the load to its final destination.
4. Ramps
Some heavy equipment can be rolled or driven off a trailer using ramps. This works especially well for wheeled or tracked machinery that can move under its own power.
Ramp offloading is not an option for systems that cannot self-propel or loads that are too heavy for the on-site ramp system.
5. Jacking and Cribbing
Hydraulic jacks can raise a load just enough to remove the transport vehicle from underneath. The load is supported using cribbing (stacked blocking material) as the trailer is pulled away.
Jacking and cribbing keep the load supported and are often a strong option in situations where the transport can move the equipment to its final position.
It is not a practical choice when the delivery vehicle cannot reach the final destination.
Real-World Example: Transformer Installation at a Power Station
One of the most common offloading scenarios we see is a transformer installation at power stations.
A transformer usually arrives on a flatbed truck or a self-propelled modular trailer. The transport vehicle can deliver the transformer to the power station’s gate, but the transformer’s final destination is often still some distance away.
Our hydraulic skidding systems are commonly used to move these kinds of transformers from delivery vehicles, through power stations, and to their final destination for installation. These moves can be made safely even when there are only a few inches of clearance for much of the final delivery corridor.
For these and similar situations where downtime is a major consideration, having the right offloading equipment on hand can be worth hundreds of thousands or even millions of dollars per day.
Choosing the Right Offloading Method for Your Situation
You have options when choosing how to offload heavy equipment from a transport vehicle.
For lighter equipment in open areas, a crane, forklift, or ramp offload may be all you need. But when the equipment is heavy, the site is tight, the equipment is sensitive, or the final position is not reachable by the delivery vehicle, hydraulic skidding is often a strong option for safely offloading heavy equipment and moving it to its final destination.
If you have an offloading challenge coming up, the Hydra-Slide team can help. We can evaluate your site, your heavy equipment, explain whether hydraulic skidding is a good fit, and recommend a system for your specific needs.
