Multiquip WSHE_A_SERIES - Manual (Page 19)

WSHe/a vibraTory TruSS Screed • operaTion manual — rev. #0 (05/22/12) — page 19
General infOrMatiOn
Multiquip vibratory truss screeds are used for leveling
pavement and industrial floors. They are available in air-
powered and engine-driven configurations. The vibratory
truss screeds provide dependable performance on job
after job. Its modular design allows the ability to configure
the screed by adding or removing sections as needed.
Figure 3 represents a typical vibratory screed application.
Heavy-duTy STeel conSTrucTion
The Multiquip vibratory truss screed uses a triangular frame
design (Figure 4), built to take the abuse of rough handling
on a jobsite. Unlike the lightweight aluminum screed, the
steel screed will hold its precise shape better on long pours
and over a longer period of time. Additionally, the heavier
steel screed will stay down on the forms and will not ride up
during a pour. This vibratory screed weighs approximately
14 pounds per foot.
STeel TruSS deSign
The steel construction keeps the screed from riding up on
stiff concrete mix designs.
The vibratory truss screed features top pipe manufactured
from schedule 80 steel and features 16 TPI thread to
provide fine grade control should crowns or inverts be
required.
Figure 4. Screed Cross Section
SCHEDULE 80
TOP PIPE
3/8" TRUSS ROD
VIBRATION
DAMPENING
1/2" DIA.
TRUSS RODS
3/8" X 1-1/2"
BOTTOM TRUSS
SUPPORT BULL FLOAT
BLADES
STRIKE-OFF
BLADES
2"
(51 MM)
16"
(406 MM)
3"
(76 MM)
12-3/8"
(314 MM)
DIRECTION
OF TRAVEL
ENGINE SIDE
OF SCREED
Four diFFerenT lengTHS
Multiquip Vibratory Screeds come in four lengths: 2-1/2 ft.,
5 ft., 7-1/2 ft. and 10 ft. sections.
STandardizaTion (air and engine driven)
Multiquip uses the same frame for both the air and engine
driven screeds. The top pipe is drilled and tapped to allow
air connections for the air vibrators.
Screed bladeS
The screed blades are constructed of 10-gauge galvanized
steel for rust resistance and maximum durability. The front
blades consist of two 1-1/2" high x 2" wide angles. This
gives the screed blades 2-1/2 inches of concrete surcharge
and 4 inches of screed surface. The rear (bull float) blade is
a single blade 2-1/2" wide. A total of 7 inches of concrete
surface contact is provided by the screed.
bolT-on blade deSign
The WSHE/A vibratory truss screeds features a bolt-
on blade design to allow easy replacement of worn or
damaged blades.
air-poWered Screed
Air vibrators offer high frequency (up to 9500 vibrations per
minute at 60 PSI) for excellent consolidation of low slump
mixes. The screed is capable of striking off slabs up to 11
inches thick (performance may vary according to mix design
and job requirements).
The vibrators are placed on 30-inch centers and located
at both front and rear blades for uniform vibration. Air
consumption is approximately 4CFM for each vibrator at
60 PSI. Crowns/Inverts up to 1/4" per foot are attainable
without an optional kit.
engine driven Screed
The engine-driven screed has an eccentric shaft design
that produces 8,000 vibration cycle nodes per minute. It
is ideal for slab, bridge, and highway applications. The
engine-driven screed is powered by either a 9 HP or 11 HP
Honda engine. Engine kits are available factory installed on
5-foot truss sections for reduced setup time at the job site.
Winch options include manual or self-propelled models.
NOTICE
It is best to allow a minimum overhang past the forms
(6" to 12" is ideal).