Boumatic Xpedia 360 EX, Installation Instructions Manual

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11. Concreting the floor of the milking pit with BPS NF EN 206-1 C35/45 XA2 Dmax 14 S3 CL 0.65 concrete. Take
particular care to observe the 5% slope from the middle of the milking pit to the circular trench and the 2%
slope from the perimeter of the milking pit to the circular trench.
The concrete in the milking parlour must be at -1050mm from the finished level of the outer curb
of the rotating apron. If possible, this concrete must be set using a portable vibrating ruler and fine
helicopterfloated so as to make the milking parlour easy to clean and maintain (to be discussed with the
stockman).
If the milking parlour floor is to be covered with non-slip tiles, the thickness of this covering must be taken
into account when calculating the level of the concrete (allow 15mm for standard glued tiles), and the
concrete can have a rougher surface finish. In this case, BPS NF EN 206-1 C 25/30 XC1 S3 CL 0.40 concrete
can also be used (concrete protected from acid attack by the tiles).
Appropriate means for preventing deformation of the reinforcements during casting (by concrete pump or
belt-conveyor) shall also be envisaged.
12. If applicable, removing the shuttering from the circular trench.
13. Assemble the metalwork of the rotary (shoes bolted into the concrete, rails, rollers, metalwork for the
rotating apron) and installing the drive motors (at least 14 days after casting the floor of the milking pit,
ideally 28 days according to Standard NF EN 206-1).
14. The framing of the concrete rotating apron forms an integral part of the metalwork. This apron is 1800mm
wide and the metal curbs on the inside and outside of the apron are provided to offer a 100mm thick layer
of concrete on the outside and an 80mm layer of concrete on the inside.
The concrete apron will thus have a 1.11% slope from the outside of the apron to the inside, making it easier
to clean at the end of the milking session.
The reinforcements of the concrete apron will comprise 8mm-diameter fe E 500 HBS steel deformed radial
bars spaced at intervals varying from 210mm center-to-center on the outside of the apron to 140mm
center-to-center on the inside, and 6mm-diameter curved fe E 500 HBS steel deformed distribution bars,
with a varying radius of curvature depending on the diameter of the rotating apron, and spaced approx.
230mm apart center-to-center.
These reinforcements will be mounted in metal shoes (seats) so that the top of the radial bars extends
30mm above the upper surface ofthe apron’s concrete (embedding).
15. Concreting the apron, using BPS NF EN 206-1 C35/45 XA2 Dmax 14 S3 CL 0.65 type concrete, adding 0.9 kg/
m� of polypropylene fibers to limit premature shrinkage and using an immersion vibrator. The concrete
must be slapped manually to give it a sufficiently rough surface to prevent the cows from slipping but must
be sufficiently smooth to make it easy to clean when milking is over.
16. Laying a 0/31.5 drainage pad in the holding pen, thoroughly compacted so as to obtain a Modulus of
Subgrade Reaction of the bottom of the blinding of over 30 Mpa/m.
17. Shuttering the edge of the entry platform of the rotary parlour holding pen, above the supporting wall
previously built between the milking parlour and the holding pen.
The platform coping must have a perfectly homothetic circular form of the outer curb of the rotating apron,
creating a clearance of 30 to 40mm around it.