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The
Tru-Contour Invert Forming System offers the manhole
producer a very durable, systematic and versatile method
of forming all invert configurations from 4" through
48" diameter. Two, three, and four way configurations
including dead end combinations with a standard .2 ft
of elevation difference fall can be made easy and rapidly
without the need for skilled labor. Greater fall can
be obtained.
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The
system's versatility is due to an unlimited combination
of four basic wedges. With the combination of one or
more of these wedges, any angle can be obtained within
1.5 degrees. This allows enough flexibility to effectively
form an invert that aligns perfectly with the entering
pipeline.
The Tru-Contour system cuts costly labor both in set-up
and concrete finishing time. A basic three way can be
set up in approximately fifteen minutes and depending
on pouring procedures, can allow an average of four
inverts per day to be formed from a single system. Finishing
time is kept to a minimum due to accuracy of flows the
forms create. Each invert in regard to channel width,
depth and radial turn is form finished.
The Tru-Contour standard system allows for 3/4-invert
depth and is compatible with a variety of flexible pipe-to-manhole
connectors. Full depth systems are also available.
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1)
A series of wedges and straight sections which when
combined provides an unlimited selection of angles to
create enough flexibility to form an invert within 1.5
degrees.
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2)
A Centering Triangle that is designed to align the invert
assembly with the flexible pipe-to-manhole connector.
This insures pipe to invert compatibility.
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3)
A Hub that covers the hole while also creating a pipe
rest that allows for flow lines to match.
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4)
A stabilization jack which prevents form floatation
during casting operations. This insures that correct
fall is maintained across the manhole base.
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5)
Specialty parts to adapt to the precast customer's specific
needs
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TRU-CONTOUR
SINGLE PIECE INVERT SYSTEM
The
Tru-Contour Single Piece Invert Systems are rugged,
lightweight forms available in full or 3/4 depths and
compatible with all existing Tru-contour systems. Our
special quick connect Centering Triangle assemblies
take the guess work out of precast invert to pipe invert
alignment, allow deflection up to 5 degrees omnidirectional
for grade adjustment or misaligned inlets, and are made
for every type of cast-in connector or boot. The closed
top design provides easy pouring and clean up while
the new hub allows the single piece form to be removed
independently to reduce damage during de-molding. The
system is engineered to accommodate both wet and dry
cast processes and can be easily integrated with a producer's
existing equipment.
ADVANTAGES:
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Closed Tops
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Fewer Pieces
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Less Handwork
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Reduced Labor and Increased Production
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Quick set-up and removal
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