What is Tilt-up
Construction? How Are Tilt-up Concrete Buildings Constructed?
construction project begins with job site preparation and pouring the slab. During
this phase of the project, workers install footings around the slab in preparation
for the panels. The crew then assembles the panel forms on the slab. Normally,
the form is created with wooden pieces that are joined together. The forms act
like a mold for the cement panels. They provide the panels' exact shape and size,
doorways and window openings, and ensure the panels meet the design specifications
and fit together properly. Next, workers tie in the steel grid of reinforcing
bars into the form. They install inserts and embeds for lifting the panels and
attaching them to the footing, the roof system, and to each other.
slab beneath the forms is then cleaned of any debris or standing water, and workers
pour concrete into the forms to create the panels.
Now comes the point where
tilt-up construction, or tilt-up construction, gets its name.
concrete panels have solidified and the forms have been removed, the crew connects
the first panel to a large crane with cables that hook into the inserts. The size
of the crane depends on the height and weight of the cement panels, but it is
typically two to three times the size of the largest panel. The crew also attaches
braces to the tilt-up panel. The crane lifts, or "tilts up," the panel
from the slab into a vertical position above the footings. Workers help to guide
the concrete panel into position and the crane sets it into place. They connect
the braces from the tilt-up panel to the slab, attach the panel's embeds to the
footing, and disconnect the cables from the crane. The crew then moves to the
next panel and repeats this process.
It's easy to be amazed as you watch
the mobile crane tilt up a concrete panel from the ground and set it into its
place. Massive cement panels weighing 50,000 to 125,000 pounds or more dangle
from the crane's long lines. The crew works as a team, setting the braces and
guiding the tilt-up panel with remarkable precision. The speed of the process
is also remarkable; an experienced tilt-up crew can erect as many as 30 panels
in a single day.
Once all the tilt-up construction panels are erected, the
crew apply finishes to the walls with sandblasting or painting. They also caulk
joints and patch any imperfections in the walls. From this point the crew moves
to the installation of the roof system and the trades begin their work inside
to Articles Index