How a spa gets lifted over a block wall

Why Almost Every Havasu Spa Needs a Crane

Nearly every backyard in this town is enclosed by block. That is a good thing for privacy and wind, and it means a spa cannot be rolled in. Side yards are narrow, gates are three feet, and the wall is continuous.

The alternatives are worse. Taking down a section of block and rebuilding it is a bigger job than the lift. Removing a gate post rarely gains enough width. Dragging a spa across a finished patio on rollers damages the patio and sometimes the spa.

So the crane goes over the top. It is the cleanest answer and on a prepared site it is a short visit.

A Spa Is Light and Fragile at the Same Time

An empty spa is not a heavy load by crane standards. What it is, is large, awkwardly shaped, top-heavy in some designs, and finished on every visible surface. The failure mode is not dropping it. The failure mode is marking it.

The acrylic shell is supported by the cabinet and the frame underneath. Load it in the wrong place and you can flex the shell or crack a cabinet panel. Squeeze it too hard with slings across the top and you can distort it.

The equipment bay is the other sensitive area. Pumps, heater, and plumbing all live in one corner, which is also why the weight is not evenly distributed. That corner has to be respected both in how it is slung and in how the spa is set down.

How It Gets Rigged

Wide soft slings under the base, positioned according to what the manufacturer says about pick points. Most spas have designated locations, and the delivery paperwork or the underside of the cabinet usually tells you where.

Wide matters. A narrow sling concentrates pressure on a small section of cabinet and will crush it. Soft matters too, because a chain or wire rope against an acrylic lip is a scratch at best.

On many spas a spreader keeps the slings from squeezing inward at the top of the cabinet. Blankets or padding go anywhere a sling touches a finished edge. And the spa gets lifted a few inches first and held, so we can see how it hangs before it goes anywhere. A spa that hangs off level tells you the pick points are wrong, and that is a thing to learn six inches up rather than at wall height.

The Wall Sets the Height, the Yard Sets the Reach

Two independent numbers decide the machine. The first is how high the load has to go, which is the wall height plus the depth of the spa hanging below the hook plus the rigging plus clearance margin. That adds up faster than people expect.

The second is radius, which is the horizontal distance from the center of the crane to where the spa lands. If the truck sits on the street and the pad is at the back of a deep lot, that radius can be substantial, and radius is what eats crane capacity.

A crane's capacity falls off as the load moves away from the machine. That relationship is what a load chart describes. Nobody needs to memorize a chart, but everybody involved should understand that a spa which is trivially light close in can be a real pick at the back of a long lot, and that is why we ask how far it has to go.

Setting Up on the Street

The truck usually works from the street in front of the house. Outriggers come down onto mats, the machine is leveled, and the setup position is chosen so the swing path misses the service drop, the roof edge, and the neighbor's tree.

Cars have to be off the street in front of the house and usually next door as well. That is the number one thing that delays a residential spa lift, and it is entirely fixable the day before.

From the street the operator often cannot see the pad at all. The wall is in the way, and sometimes the house is too. That is normal. One person stands in the yard where they can see both the spa and the pad, and gives the signals for the last part of the set.

The Landing

The pad has to be ready before the spa arrives, not being worked on while the crane waits. Level, cured, and clear. A spa set on a pad that is out of level puts stress on the shell and gives you a water line that is visibly crooked forever.

The set itself is slow on purpose. The spa comes down to a few inches above the pad and stops. Position gets checked against the intended footprint, the equipment door orientation gets checked against where the access panel needs to face, and then it comes down the last few inches under control.

It stays in the slings until whoever is receiving it confirms it is where it needs to be. Pulling slings out from under a set spa is easy if you planned for it and awkward if you did not, which is why the slings get positioned with the removal in mind before the lift starts.

What Goes Wrong

Almost every spa lift that goes badly goes badly for one of a small number of reasons, and every one of them is a planning item rather than a lifting item.

• The pad is not finished or not cured on the day of the lift
• Cars are still parked where the crane needs to set up
• Nobody told us about the tree or the service drop in the flight path
• The gate or a section of fence needs to come out and has not
• Patio furniture and planters are still in the landing area
• The spa arrives on a delivery truck hours after the scheduled lift time
• Nobody from the spa company is there to receive it and confirm placement