Common Questions About Dock Lifts

Can the hinged bridge be mounted on the side of the platform rather than the end?

Yes, for most units. In addition, they can usually be offset along the side. The single caution is to check the side load capacity of the unit, which may be considerably less than the end load capacity (note calculation of axle capacity).

Can the hand rail locations be changed?

Yes. The rails can be put on the ends or in an “L” configuration on pit-mounted lifts.

Can a truck or semi-trailer drive over the lift?

Yes, but only on pit-mounted lifts at slow speeds and only when the lift is fully lowered and resting on its mechanical stops.

What happens if a truck hits the lift?

The lift will probably be damaged; the extent of damage is determined by the impact forces.

What about full skirts or skirting around a lift?

Federal regulations do not require full skirts, but ANSI code requires lifts to have 8-in. bevel toe guards. Where additional personnel protection is desired, some manufacturers offer electric toe guards as an option. Fabric roller shades and accordion bellows skirting are an optional housekeeping aid, but they are not durable and because they do not provide a rigid physical barrier, their protection is more visual.

Where should the power unit be located?

Wherever convenient, out of the weather, preferably inside the building within 30 ft of the lift.

Where should the pushbutton be located?

Preferably within reach of the person riding the dock lift. Generally the control is on an electrical cord and hung on the handrail while the lift is being used and then put inside the building when the lift is out of use. Wall-mounted switches are also acceptable provided that they can be reached by the person using the lift.

How thick should the concrete pit floor be?

That depends upon the floor loading and the local soil conditions (quicksand or solid rock), and should comply with local codes.

What kind of drain should be used?

The best drain is one that goes into the storm sewer. The next would be a sump pump arrangement and the last choice is a “french” drain or drain field.

What happens to the lift if the pit floods?

Dock lifts should be equipped with closed return lines from the hydraulic cylinders to the reservoirs. However, if the lines are not installed correctly or are damaged, then water can enter the cylinders through the breather lines and cause internal rusting. If water is retained or remains in the pit, the whole unit may corrode at an accelerated pace.

Should bumper posts be used to protect the lift?

They are recommended but not required. The lift is usually down when trucks are backed in.