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Maggy anchor has been purposely studied and licensed (Italy, France, Germany, Great Britain and Spain) for the fastening of road and highway guardrail, both steel and concrete (New Jersey), on bridge edges or for special protections.

The main advantages of the Maggy lie in the optimisation and economy in the assembling phase, since it allows a quick installation and particularly, in case of accident, a quick removal of the damaged elements and quick replacement of the same, with a sizable time saving, and consequently cost saving, during maintenance works.

Il Maggy, in fact, foresees the assembling of 5 items: the thread rod, made in high resistance steel, a big washer or lug, an hexagonal nut, a self-blocking nut, and a shell/anchor in high quality plastic material (POM). Thread rods, nuts and washers are hot dip galvanized according to ISO-UNI norms, in order to provide the required protection against oxidation.


The installation on curb of reinforced concrete, in addition to normal drilling of the holes (diameter mm 60) foresees the insertion of the shell/anchor in the hole duly filled with resin to guarantee full adherence in a way to result in a unique body concrete-plastic shell anchoring perfectly the protections.

In terms of size Maggy is made of a thread rod diameter 20 mm and full length 430 mm, with upper thread 100 mm, pitch 2,5, right, and a lower thread 295 mm, pitch 4 trapezoidal, left. Maggy is delivered already inserted in the shell/anchor that is at turn threaded diameter 20, pitch 4 trapezoidal, left. The shell has been projected in a way to show characteristics of full impermeability, without any possibility of penetration of resin within the anchor, thanks to welding of edges by means of ultrasound-sealed buttons.

Once installed the guardrail through the fixing of the washer/lug and the tightening of the hexagonal nut and the self-blocking nut, the workflow will eventually be the following: after the accident and the consequent misshaping and damaging of the involved parts, the crossing of the thread types allows the operator, working just with hexagonal key and needed gun, to act directly on nuts blocked in the final part of the right thread. If on the other hand the thread rod had suffered breaks on the upper part with relevant nuts, the placing of the anchor at the road level would allow in any case the extraction of the thread rod itself, using normal pincers working like a normal screwdriver for right thread. Thanks to conservation of the shell it would be easy to reinstall the guardrail with new pieces by simply replacing the damaged metal parts of the Maggy and without proceeding to new drilling, so with times and costs duly minimized.