Models:type A 1020×450 H.450 L=1000type B 1100×500 H.500 L=1000type C 1200×570 H.570 L=1000type D 1570×720 H.720 L=1000 Works at Castelbello: laying type B trapezoidal channelsView Largercantiere-di-sondrio-torrente-liro-valchiavennaView LargertorinoBrochurePDFtrapezieDWG - AutocadtrapezieXLSPricesITEM OF CONTRACT SPECIFICATIONSCHANNELS WITH TRAPEZOIDAL SECTION IN VIBRATED CONCRETE WITH FITTING AT HALFTHICKNESS, SIZE………………… IN ELEMENTS 1000 mm LONG, STEP SLOPES 60°.