Panels
High-stiffness mesh for rockfall protection
Maccaferri HEA Panels (High Energy Absorption) are the stiffest products within our Mac.RO(TM) Systems mesh range, offering extreme strength at low strain. Stiffness is more important than tensile strength of meshes as it affects the deflection of the system under load. The panels are woven from a single continuous length of high tensile strength steel wire rope, joined at each crossing point with the patented HEA 'double knot' connection.
Unlike single twist spiral rope nets, the construction of HEA Panels provides exceptional stress/strain performance with the lowest possible deformation. HEA Panels are used in secured drapery applications where a low deflection and high strength system is required. Due to the multi-axial performance of the panel, loads are transferred effectively to the anchors on the slope face regardless of the anchor layout.
HEA panels made from polymer coated cables are also available for demanding exposure conditions. The patented knot connection is made by two bindings, each one obtained by looping a pair of steel 3.00 mm wires coated with Galmac, a Zinc-Aluminium (5%) alloy. The two bindings tightly envelop the ropes crossing each other. The panel is made of square meshes manufactured with one rope, secured by a pressed aluminium ferrule, according to EN 13411-3.
Success Stories
Built, not just drawn
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Il tratto ligure della Ciclovia Tirrenica "Riviera dei Fiori" collega Imperia e Diano Marina, offrendo un percorso di elevato valore paesaggistico grazie al costante affaccio sul mare. Il Lotto Prioritario Ligure – Stralcio 3 “Incompiuta” rientra nella pianificazione del Sistema Nazionale delle Ciclovie Turistiche e della Rete Ciclabile Ligure, con l’obiettivo di promuovere una mobilità sostenibile e valorizzare il patrimonio storico, culturale e ambientale. L'intervento, finanziato con oltre 11mln di euro, è stato realizzato dalla Regione Liguria e dai Comuni di Imperia e Diano Marina. L'area di intervento, posta ad una quota di circa 120m s. l. m. , ricade in un tratto di costa caratterizzato da versanti molto acclivi e diffusa instabilità. L'assetto giaciturale, spesso sfavorevole, dei sistemi di fratturazione, il grado di fratturazione dell'ammasso roccioso e l'azione degli agenti atmosferici hanno favorito nel tempo fenomeni di dissesto, prevalentemente crolli, che interessano le coperture detritiche e le pareti rocciose. Si è, dunque, reso necessario mettere in sicurezza i versanti a monte del tracciato ciclopedonale.
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PASSAGEM INFERIOR DA RODOVIA BR-101 EM ESCADA
A viaduct project was carried out on BR-101, in the municipality of Escada-PE, in the direction from Recife to Maceió, to create a turnaround point. During the construction of the project, the road's profile needed to be changed, raising its levels through the construction of embankments. However, the lateral projection of the embankment would intersect with the turnaround road if the slope was not made vertical with an appropriate retaining structure.
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PRESA FRANCISCO ABELLÁN
Spain
The Francisco Abellán reservoir is located near the town of Lopera, in the center of the province of Granada. It is fed mainly by the tributary of the river Fardes, which in turn is fed by the river Guadiana Menor and covers an area of 1847. 40 km2. The reservoir contains Miocene sedimentary materials such as sandstones, marlstones and calcarenites. In the extreme north-east, there is an alternation of these three materials and two problems: The first is in the upper sandstone bench due to the presence of unstable blocks, some of them of large size. The second problem is in the lower bank, where unstable blocks and roofs are also observed as a result of differential erosion. On the other hand, on the northwest slope (NW) there is access to the monitoring station which is unprotected against falling rocks.
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