Roof Truss Lifting in Lake Havasu City

Why a Truss Needs More Than One Pick Point

A truss carries load in its own plane. Turn that force sideways and it has very little to give. Lift a long truss from a single point in the middle and the ends sag, the whole thing bows, and the plates at the joints take stress they were never designed for.

So pick points get spread along the top chord at panel points, where the webs meet the chord, and long spans get a spreader bar so the sling legs pull straight up rather than inward. On short garage or casita trusses a simple two-point pick is often fine. On a long great-room truss it is not.

How the truss hangs also decides how the crew receives it. A truss that arrives level and in plane can be walked into position and braced. One that arrives twisted has to be fought, and fighting a truss on top of a wall is where people get hurt.

The Bundle, the Bands, and the Order

Trusses arrive banded in bundles, stacked in whatever order suited the truck. Nobody loads them in the sequence you want to set them, so the first job is figuring out which truss is on top and which one you need next.

Bands come off at the pile, deliberately, with the bundle stable on the ground and nobody in the way. A band under tension releases fast. What we do not do is cut a band on a bundle that is hanging, which is the shortcut that turns into an incident.

The gable end usually goes first, then the run works across with temporary bracing following. If the sequence in the bundle is wrong for that, we spend twenty minutes restacking at the pile rather than repeatedly digging for the right member all morning.

Hip sets are the other thing to flag early. A hip roof means a lot of short members going up in a fixed order with more handling per truss, so the day runs differently from a straight gable run of the same square footage.

Handing Off to the Wall

The framing crew is on the top plate waiting. The crane brings the truss up and holds it just above bearing while they align the heel to the layout mark and set it. The crane keeps tension until the truss is braced to the previous one or to a ground brace.

One person signals. On a wide house the operator often cannot see the far end of the truss, so the signal person is standing where he can see both ends and the crane. Everyone else stays off the radio.

Speed comes from rhythm, not from rushing individual picks. A crew that braces as it goes and has the next layout mark ready sets trusses steadily. A crew that stops to hunt for bracing between every member spends the day watching the crane idle.

Gable ends and girder trusses deserve their own mention. They are heavier, often doubled or tripled, and they carry the load of everything that hangs off them. Those are the members where the weight actually matters, and they are worth calling out to us in advance rather than discovering at the pile.

Wind on a Partly Framed Roof

A truss is a big flat sail. Hanging from a crane it wants to rotate, and standing on a wall with two nails and a brace it wants to go over. Both of those get worse fast as the wind builds.

Two tag lines are standard on anything with real span. They give control over rotation without anybody putting hands on the member while it is above the wall.

In monsoon season and on gusty spring afternoons we start early and plan the day so the roof reaches a fully braced stopping point. Leaving a run of unbraced trusses standing overnight in Havasu wind is not a risk worth taking to finish one more member.