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Application/Operation
1. Before placing the DuoScreed in concrete for
screeding, it is a good idea to apply form oil onto the
blade and all rame 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 15) 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. Remember, before any concrete is to be poured,
make sure that the top of the pins are dead on grade.
DSGPULW DUOSCREED • OPERATION MANUAL — REV. #8 (06/12/23) — PAGE 19
Figure 15. DuoScreed On Forms and Grade Pins
APPLICATION/OPERATION
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. 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.
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