Durability
ICFs
FAQ
Tilt-Up FAQ
Links
Concrete
Publications
Link to Us
|
Tilt-Up Concrete Construction
Panel
Formation
The standard practice in laying out
panels is to snap a chalk line on the
floor slab. These lines indicate panel
perimeters and the forms should be
placed against them. Wood 2x's are the
most common material used for side
forms. Often the panel depth is designed
to fit the depth of standard dimension
lumber, so 5½- and 7¼-inch-thick
structural panels are common.
The form sides can be supported and
secured to the slab by a wood or steel
angle support. Any common concrete
anchor can be used to attach forms to
the slab. Remember that holes in the
slab left by anchorages must be
repaired.
There are several ways to form
individual panels. One way is to form
the perimeter of a series of panels,
then use 1x or 2x strips to divide the
area into panels. Advantages of this
method include less forming and reduced
forming lumber costs. Close joint
tolerances from panel to panel can be
maintained since adjacent panels share a
form.
A variation of this method is to cast a
large slab, then saw joints into the
slab to form individual panels after the
concrete has been troweled.
Use cant strips at the juncture of the
side form and slab. They reduce spalling
when stripping forms, help close off the
bottom of the form to reduce concrete
leakage, and give a neater appearance. A
bead of caulk often is added as an
additional seal between cant and reveal
strips and the slab.
Form door and window openings after
framing the panel perimeter. Brace the
interior of the openings to prevent
bowing or movement. Use cant strips
between the opening forms and slab. If
the opening is closer than 24 inches to
a panel edge, a strongback may be needed
for additional support during panel
lifting and placement.
Apply form release agent and bond
breaker to the slab and forms as
recommended by the manufacturer. A wide
variety of materials are available.
Compatibility between bond breakers,
form release agents, and paints or
coatings used on the panels is critical.
Check compatibility by consulting with
the product suppliers.
>> Next:
Surface Treatments |
ConcreteAnswers for Architects, Engineers and
Developers:
Concrete
Answers.org
ConcreteParking.org
Pervious
Pavement.org
GreenConcrete.info
FlowableFill.org
SelfConsolidating
Concrete.org
GreenRoofTops.org
|
