LETTER OF THANKS AND INFORMATION, FROM A SATISFIED CUSTOMER.
Hello Mr. Laengle,
The following photos and text were sent by Mr. Hermann Zitz, to the Managing Director of the Maschinenrings Lungau, which report was submitted to "Maschinenrings Lungau" journal.
As you may see from the picutres of the tractor treads (Published November, 2002), the new surface is extremely stable and durable. The tractor was loaded with approximately 2,200 pounds in the frontloader.
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Greetings From Hr. Hermann Zitz
A-5580
Unternberg, Salzburg
TO: Managing Director, Maschinenrings Lungau (Salzburg).
ATTACHMENT: Pictures of the turnout, and installation of the EcoRaster Polyethylene Grid System in a heavily used cattle turnout.
For many years I have tried different products, in an attempt to make the turnout more animal-firendly to some extent, without resorting to using concrete. During dry periods there was never a problem, but whenever it rained the cows were again knee-dep in mud.
Other surface products and methods I have tried: Applying Limestone chips as a sub-base, underneath either hogfuel or tree bark top layer, or partly mixed sawdust mixtures and sand - in various combinations.
Initially, the above worked well (except when using only hogfuel wood chips, which resulted in damage to the cattle's hooves). However, after only two months the surface was already intermingled with the soil underneath.
The maintenance of the surface was very labor intensive. This entailed largely manual labor, only using mechanical methods during the excavation and construction using the materials listed above.
During the previous year in November I had seen orders of a lattice-like soil reinforcement system. In a lightning-fast action (on the last day of the blustery storm season) I decided to install the honeycomb-like grids. The condition of the existing sub-base left much to be desired. To install the system, all that I performed was to clear the fouled soil with a tractor, while filling in a few of the deeper depressions in the turnout with sand. I then layed the grids, filled and covered them with sand, and lightly compacted them into place - using a vibrating plate to consolidate the installation.
My first experience with the grids: The cattle quickly accepted the new turnout, particularly during rainy or wet weather. The surface of the turnout dries much faster now, and can now be cleaned very easily and thoroughly.
Disadvantage from today's pespective: Wherever large stoneswere in the ground before the installation creating holes in the soil, there are now slight depressions. However, this is not a great hindrance or drawback.
The Benefits of this installation are:
 a reliably animal-friendly ground condition (90 % of the surface appears as natural soil),
 the fast and easy installation of the system (no need to "pack a winter suit case" - or "to allow for the freeze depth of the soil during the winter"),
 the cattle prefer and quickly accept the treated area, and
 its rainfall absorption ability due to its water-permeable nature.
 Finally, the possibility of returning the area to its original state, should the turnout no longer be needed.
This year I have installed another larger turnout area:
 being more careful in the ground preparation and the installation of the grids this time.
 Using a small excavating tractor, I first leveled the surface.
 I built up the ground using approximately 10 cm. of limestone ships, and then lightly compacted this foundation.
 On top of this consolidated surface I layed the grid system, and then filled it with unwashed sand and rolled it again.
 I have found that the sand should have a good amount of common soil, allowing it to bind together better than sand alone.
Total time required for this second installation:
 Area size of the installation - 150 m2 soil reinforcement grids (approximately 1,600 square feet).
 2 hours: Leveling and rolling the foundation, using two standard Mini-excavators.
 3 hours: Laying and assembling the grids.
 2 hours: Filling grids with sand and applying the top layer, and rolling it a last time.
7 hours - Total time required.
Maintenance requirements:
 Based upon need.
 Usually about once per week.
 Using a small tractor, upon which I employ a "cut-apart" front loader.
 In this way maintaining an angle on the frontloader, using the tractor is well adapted to performing the cleanup while preserving the grids.
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