Rice Lake SURVIVOR PT Series - Manual (Page 16)

12 Survivor PT - Pit Type Truck Scale
4.0 Pour and Finish Concrete Deck
With a concrete crew of three experienced workers, a 70' by 10' scale can be
poured and finished in approximately three hours. Access to only one side of
the scale is necessary as most concrete trucks carry extension chutes at least 16'
long. If possible, order concrete in front-unloading trucks. The truck will be
moving slowly while filling; the improved driver-visibility with front-
unloading makes that process faster and more accurate.
To protect against unsightly concrete splatters on the top of the support
channels, mask off the top of the channel with tape or use 4 to 6 mil plastic to
cover the top surface.
Position the unloading chute at the near left side of the scale and begin filling
having the truck move slowly to the right.
To ensure concrete flowing evenly into the frame and encasing all Nelson studs and
rebar, a concrete vibrator is highly recommended. These units are available for rent
at most construction equipment rental sources. They work very quickly to level
concrete, settle out surface stones, and leave a stone-free layer at the top surface to
make finishing easier.
After vibrating to approximate level, screed the concrete to the level of the top of
the support channels with a 2x4 board cut to length
With the deck level and floated, finish with either a magnesium float or steel
trowel for a neat deck line level with the top of the support beams and top of the
pit.
When the entire frame has been floated with a magnesium float and has set
enough for finishing, use a radius edger to finish the metal/concrete joint.
For a non-skid surface, use a stiff bristle broom for a brushed finish when the
concrete has set enough for final finishing. It is recommended that a non-skid
surface be applied for all northern tier states.