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DSGPULW DUOSCREED — OPERATION AND PARTS MANUAL — REV. # 6 (12/10/10) — PAGE 19
DSGPULW DUOSCREED — APPLICATION/OPERATION
Application/Operation
1. Before placing the DuoScreed in concrete for screeding,
it is a good idea to apply
form oil
to the blade and all
frame parts that may come in contact with the concrete.
This form oil will become useful when cleaning the
DuoScreed. Make sure to
saturate the unit with a good
amount of form oil.
2. Prepare a grid of #5 rebar pins (Figure 14) equally spaced
approximately every 9 to 11 feet. If a 10 ft. screed blade
is going to be used space the grade pins every 9 feet, if
a 12 ft. screed blade is required, space the grade pins
every 11 ft. Make sure to drive the pins deeply into the
ground.
3. Use a
string line
or
laser
to set the pins to grade (height).
The grade should be to the top of the grade pins. Remem-
ber, before any concrete is to be poured, make sure that
the top of the pins are dead on grade.
Figure 14. DuoScreed On Forms and Grade Pins
4. Once all the grade pins have been placed correctly and
are dead on grade, concrete can then be poured on top
of grade pins.
5. Level, and form the concrete as close as possible to
grade. Mark the top of each pin so that its exact location
will be known. Use a hand trowel to float the edges and
plumbing grade pins.
6. If chalk lines are used for grade against forms, walls or
existing concrete, float out the grade with a hand float
along the edge.
7. Two workers will be required to assist the DuoScreed
operator when making the 12-18 concrete bases, one on
each side. These workers will rake the concrete in toward
the center of the DuoScreed away form the bases to avoid
changing base elevation.