Abstract: Tire (1) of construction plant type, having a first working layer, of width L1, with metal reinforcers of angle A1, second and third working layers of widths L2 and L3, centred over the widths L21 and L31 metal reinforcers of angles A12 and A13, and having, on either side of the median plane, axially on the outside of L21 and L23, second elastic metal reinforcers of angles A22 and A23 less than 8°. The tire has two radially outermost protective layers (31), of axial widths LPN1 and LPN2, with elastic reinforcers of angles APN1 and APN2. The absolute values of the angles A1, A21, A31, APN1, APN2 are greater than 20°. A1 and A31 have the same sign, this being the opposite sign to the angle A21. The width L1 is greater than the widths L2 and L3 and less than one of the widths LPN1, LPN2.

Abstract: A tire (1) for a vehicle of the construction plant type, having a carcass reinforcement (4) and a crown reinforcement (3), with at least five crown layers (311, 312, 321, 322, 331, 332) having metal reinforcers. The protective layer (312) has elastic reinforcers having a tensile modulus at most equal to 110 GPa. The rubbers, referred to as crown decoupling rubbers (6), that are located around the axial ends of the crown layers (311, 312, 321, 322, 331, 332) have an elongation at break at least equal to 500%, and a dynamic loss tan? at most equal to 0.06. A crown filler rubber (5) between the axial end of the axially widest working layer (321) and the carcass reinforcement (4) possibly has an elongation at break at least equal to 650% and a dynamic loss tan?, at 100° C. at 10 Hz, at most equal to 0.07.

Abstract: A radial tire having a rim diameter at least equal to 24 inches and a nominal load at least equal to 8000 kg for a mining vehicle, having a tread (22) of radial thickness E at least equal to 0.04 times the outer radius of the tire. The tread has two rubber compositions, making up at least 90% of the thickness E. The first composition (221), radially on the inside of the second (222), makes up at least 40% and at most 66% of the thickness E; it has a secant modulus at 10% strain, at 23° C., greater than 5.2 MPa, an elongation at break at 100° C. greater than 500%, and a maximum dynamic loss at 100° C. and 10 Hz greater than 0.13. The proportion by weight, expressed in phr, of filler of the second composition is greater than that of the first composition.

Abstract: A tire (1) for a vehicle of the construction plant type, having a carcass reinforcement (4) and a crown reinforcement (3), with at least five crown layers (311, 312, 321, 322, 331, 332) having metal reinforcers. The protective layer (312) has elastic reinforcers having a tensile modulus at most equal to 110 GPa. The rubbers, referred to as crown decoupling rubbers (6), that are located around the axial ends of the crown layers (311, 312, 321, 322, 331, 332) have an elongation at break at least equal to 500%, and a dynamic loss tan? at most equal to 0.06. A crown filler rubber (5) between the axial end of the axially widest working layer (321) and the carcass reinforcement (4) possibly has an elongation at break at least equal to 650% and a dynamic loss tan?, at 100° C. at 10 Hz, at most equal to 0.07.

Abstract: A tire for a heavy-duty vehicle of construction plant type comprises a crown reinforcement (35) radially on the inside of a tread (10) and radially on the outside of a carcass reinforcement (50). The crown reinforcement (35) comprises: at least one “low-modulus” layer (20) formed of elastic metal reinforcers having a structural elongation at least equal to 0.4%, and a total elongation at break at least equal to 3%, and a tensile elastic modulus of between 40 GPa and 130 GPa; at least one “rigid” layer (30) formed of rigid metal reinforcers, the structural elongation of which is less than or equal to 0.2% and the tensile elastic modulus of which is between 140 GPa and 200 GPa. The ratio of the breaking tension of the rigid layer to that of the low-modulus layer is greater than or equal to 1.2.

Abstract: A two-layer multi-strand cord (60) has a modulus EC such that 50 GPa?EC?160 GPa. The cord comprises: (a) an internal layer (CI) of the cord made up of J>1 internal strands (TI) wound in a helix having a modulus EI, each internal strand (TI) comprising: an internal layer (C1) made up of Q?1 internal threads (F1), and an external layer (C2) made up of N>1 external threads (F2) wound around the internal layer (C1), and (b) an external layer (CE) of the cord made up of L>1 external strands (TE) wound around the internal layer (CI) of the cord, each external strand (TE) comprising: an internal layer (C1?) made up of Q??1 internal threads (F1?), and an external layer (C2?) made up of N?>1 external threads (F2?) wound around the internal layer (C1?).

Abstract: A cord (50) comprises: an internal strand (TI) comprising internal layer (C1) of Q=1 internal wire (F1), an intermediate layer (C2) of M intermediate wires (F2) wound around the internal layer (C1) with a pitch p2, an external layer (C3) of N external wires (F3) wound around the intermediate layer (C2) with a pitch p3; and L>1 external strands (TE) comprising an internal layer (C1?), an external layer (C3?). The external layer (CE) of the cord is wound around the internal layer (CI) of the cord in a direction of winding of the cord (50). Each external layer (C3, C3?) of each internal and external strand (TI, TE) is wound in the same direction of winding that is the opposite to the direction of winding of the cord (50). The external layer (CE) of the cord (50) is desaturated, and 0.36?(p3?p2)/p3?0.57.

Abstract: A hooping reinforcement of a tire for a heavy duty civil engineering type vehicle is disclosed. The crown reinforcement (3) of the tire (1), radially on the inside of a tread (2), comprises a protective reinforcement (6), a working reinforcement (5) and a hooping reinforcement (7). Said hooping reinforcement (7) has an axial width at most equal to the smallest axial width (L61, L62) of the two working layers (61, 62), and comprises at least two hooping layers (71, 72) that are formed from strips each made up of elastic metal reinforcers. Each hooping layer (71, 72) is made up of an axial juxtaposition of contiguous turns of the strip (8), which are circumferentially wound around the working layer (51). Each strip (8) is at least 35 mm and at most 250 mm thick, and its distributed breaking tension is at least equal to 100 daN/mm.

Abstract: A cord (50) comprises: an internal strand (TI) comprising an internal layer (C1), and an external layer (C3); and L>1 external strands (TE) comprising an internal layer (C1?) of Q?=1 internal wire (F1?), an intermediate layer (C2?) of M? intermediate wires (F2?) wound around the internal layer (C1?) with a pitch p2?, and an external layer (C3?) of N? external wires (F3?) wound around the intermediate layer (C2?) with a pitch p3?. The external layer (CE) of the cord is wound around the internal layer (CI) of the cord in a direction of winding of the cord (50). Each external layer (C3, C3?) of each internal and external strand (TI, TE) is wound in the same direction of winding that is the opposite to the direction of winding of the cord (50). The external layer (CE) of the cord (50) is desaturated, and 0.36?(p3??p2?)/p3??0.57.

Abstract: A tire for a heavy-duty vehicle of construction plant type comprises a crown reinforcement (35) radially on the inside of a tread (10) and radially on the outside of a carcass reinforcement (50). The crown reinforcement (35) comprises: at least one “low-modulus” layer (20) formed of elastic metal reinforcers having a structural elongation at least equal to 0.4%, and a total elongation at break at least equal to 3%, and a tensile elastic modulus of between 40 GPa and 130 GPa; at least one “rigid” layer (30) formed of rigid metal reinforcers, the structural elongation of which is less than or equal to 0.2% and the tensile elastic modulus of which is between 140 GPa and 200 GPa. The ratio of the breaking tension of the rigid layer to that of the low-modulus layer is greater than or equal to 1.2.

Abstract: A two-layer multi-strand cord (60) comprises an internal layer (CI) of the cord made up of J>1 internal strands (TI) and an external layer (CE) of the cord made up of L>1 external strands (TE). The cord satisfies the relationship 95?MC?175, where MC=(J×MI+L×ME)/(J+L); MI=200×cos4(?)×[Q×(D1/2)2×cos4(?)+N×(D2/2)2×cos4(?)]/[Q×(D1/2)2+N×(D2/2)2]; and ME=200×cos4(??)×[Q?×(D1?/2)2×cos4(??)+P?×(D2?/2)2×cos4(??)+N?×(D3?/2)2×cos4(??)]/[Q?×(D1?/2)2+P?×(D2/2)2+N?×(D3?/2)2], where D1, D1?, D2, D2?, and D3? are in mm, ? and ?? are the helix angle of each internal and external strand (TI), ? and ?? are the helix angle of each internal thread (F1, F1?), ?? is the helix angle of each intermediate thread (F2?) and ? and ?? are the helix angle of each external thread (F2, F3?).

Abstract: A two-layer multi-strand cord (60) comprises an internal layer (CI) of the cord made up of J>1 internal strands (TI) and an external layer (CE) of the cord made up of L>1 external strands (TE). The cord satisfies the relationship 100?MC?175, where MC=(J×MI+L×ME)/(J+L); MI=200×cos4(?)×[Q×(D1/2)2×cos4(?)+N×(D2/2)2×cos4(?)]/[Q×(D1/2)2+N×(D2/2)2]; and ME=200×cos4(??)×[Q?×(D1?/2)2×cos4(??)+N?×(D2?/2)2×cos4(??)]/[Q?×(D1?/2)2+N?×(D2?/2)2], where D1, D1?, D2, D2? are in mm, ? and ?? are the helix angle of each internal and external strand (TI), ? and ?? are the helix angle of each internal thread (F1, F1?), and ? and ?? are the helix angle of each external thread (F2, F2?).

Abstract: A two-layer multi-strand cord (60) comprises an internal layer (CI) of the cord made up of J>1 internal strands (TI) and an external layer (CE) of the cord made up of L>1 external strands (TE). The cord satisfies the relationship 95?MC?175, where MC=(J×MI+L×ME)/(J+L); MI=200×cos4(?)×[Q×(D1/2)2×cos4(?)+P×(D2/2)2×cos4(?)+N×(D3/2)2×cos4(?)]/[Q×(D1/2)2+P×(D2/2)2+N×(D3/2)2]; and ME=200×cos4(??)×[Q?×(D1?/2)2×cos4(??)+N?×(D2?/2)2×cos4(??)]/[Q?×(D1?/2)2+N?×(D2?/2)2], where D1, D1?, D2, D2?, and D3 are in mm, ? and ?? are the helix angle of each internal and external strand (TI), ? and ?? are the helix angle of each internal thread (F1, F1?), ? is the helix angle of each intermediate thread (F2) and ? and ?? are the helix angle of each external thread (F3, F2?).

Abstract: A two-layer multi-strand cord (60) comprises an internal layer (CI) of the cord made up of J>1 internal strands (TI) and an external layer (CE) of the cord made up of L>1 external strands (TE). The cord satisfies the relationship 95?MC?180, where MC=(J×MI+L×ME)/(J+L); MI=200×cos4(?)×[Q×(D1/2)2×cos4(?)+P×(D2/2)2×cos4(?)+N×(D3/2)2×cos4(?)]/[Q×(D1/2)2+P×(D2/2)2+N×(D3/2)2]; and ME=200×cos4(??)×[Q?×(D1?/2)2×cos4(??)+P?×(D2?/2)2×cos4(??)+N?×(D3?/2)2×cos4(??)]/[Q?×(D1?/2)2+P?×(D2/2)2+N?×(D3?/2)2], where D1, D1?, D2, D2?, D3 and D3? are in mm, ? and ?? are the helix angle of each internal and external strand (TI), ? and ?? are the helix angle of each internal thread (F1, F1?), ? and ?? are the helix angle of each intermediate thread (F2, F2?) and ? and ?? are the helix angle of each external thread (F3, F3?).

Abstract: A two-layer multi-strand cord (60) comprises an internal layer (CI) of the cord made up of J>1 internal strands (TI) and an external layer (CE) of the cord made up of L>1 external strands (TE). The cord satisfies the relationship 95?MC?175, where MC=(J×MI+L×ME)/(J+L); MI=200×cos4(?)×[Q×(D1/2)2×cos4(?)+N×(D2/2)2×cos4(?)]/[Q×(D1/2)2+N×(D2/2)2]; and ME=200×cos4(??)×[Q?×(D1?/2)2×cos4(?)+P?×(D2?/2)2×cos4(6?)+N?×(D3?/2)2×cos4(?)]/[Q?×(D1?/2)2+P?×(D2/2)2+N?×(D3?/2)2], where D1, D1?, D2, D2?, and D3? are in mm, ? and ?? are the helix angle of each internal and external strand (TI), ? and ?? are the helix angle of each internal thread (F1, F1?), ?? is the helix angle of each intermediate thread (F2?) and ? and ?? are the helix angle of each external thread (F2, F3?).

Abstract: A two-layer multi-strand cord (60) comprises an internal layer (CI) of the cord made up of J>1 internal strands (TI) and an external layer (CE) of the cord made up of L>1 external strands (TE). The cord satisfies the relationship 95?MC?180, where MC=(J×MI+L×ME)/(J+L); MI=200×cos4(?)×[Q×(D1/2)2×cos4(?)+P×(D2/2)2×cos4(?)+N×(D3/2)2×cos4(?)]/[Q×(D1/2)2+P×(D2/2)2+N×(D3/2)2]; and ME=200×cos4(??)×[Q?×(D1?/2)2×cos4(??)+P?×(D2?/2)2×cos4(??)+N?×(D3?/2)2×cos4(??)]/[Q?×(D1?/2)2+P?×(D2/2)2+N?×(D3?/2)2], where D1, D1?, D2, D2?, D3 and D3? are in mm, ? and ?? are the helix angle of each internal and external strand (TI), ? and ?? are the helix angle of each internal thread (F1, F1?), ? and ?? are the helix angle of each intermediate thread (F2, F2?) and ? and ?? are the helix angle of each external thread (F3, F3?).

Abstract: The invention relates to a tire for a heavy vehicle of construction plant type, comprising a working reinforcement (50), a protective reinforcement (60) and a hoop reinforcement (70). The working reinforcement (50) comprises two layers (51, 52) comprising inelastic metallic reinforcers that are crossed and make angles of between 30° and 35° with the circumferential direction, and having a force at break greater than 2500 daN. The hoop reinforcement (70) is formed by a circumferential winding forming two layers (71, 72), radially positioned between the working layers (51, 52), comprising circumferential elastic metallic reinforcers, having a force at break greater than 800 daN. The metallic reinforcers of the protective layers (61, 62) are potentially identical to the reinforcers of the hoop reinforcement, crossed from one layer to another with angles identical to the working layers. These reinforcers are elastic, have a diameter greater than 3 mm and a force at break greater than 800 daN.

Abstract: A two-layer multi-strand cord (60) comprises an internal layer (CI) of the cord made up of J>1 internal strands (TI) and an external layer (CE) of the cord made up of L>1 external strands (TE). The cord satisfies the relationship 100?MC?175, where MC=(J×MI+L×ME)/(J+L); MI=200×cos4(?)×[Q×(D1/2)2×cos4(?)+N×(D2/2)2×cos4(?)]/[Q×(D1/2)2+N×(D2/2)2]; and ME=200×cos4(??)×[Q?×(D1?/2)2×cos4(??)+N?×(D2?/2)2×cos4(??)]/[Q?×(D1?/2)2+N?×(D2?/2)2], where D1, D1?, D2, D2? are in mm, ? and ?? are the helix angle of each internal and external strand (TI), ? and ?? are the helix angle of each internal thread (F1, F1?), and ? and ?? are the helix angle of each external thread (F2, F2?).

Abstract: A two-layer multi-strand cord (60) comprises an internal layer (CI) of the cord made up of J>1 internal strands (TI) and an external layer (CE) of the cord made up of L>1 external strands (TE). The cord satisfies the relationship 95?MC?175, where MC=(J×MI+L×ME)/(J+L); MI=200×cos4(?)×[Q×(D1/2)2×cos4(?)+P×(D2/2)2×cos4(?)+N×(D3/2)2×cos4(?)]/[Q×(D1/2)2+P×(D2/2)2+N×(D3/2)2]; and ME=200×cos4(??)×[Q?×(D1?/2)2×cos4(??)+N?×(D2?/2)2×cos4(??)]/[Q?×(D1?/2)2+N?×(D2?/2)2], where D1, D1?, D2, D2?, and D3 are in mm, ? and ?? are the helix angle of each internal and external strand (TI), ? and ?? are the helix angle of each internal thread (F1, F1?), ? is the helix angle of each intermediate thread (F2) and ? and ?? are the helix angle of each external thread (F3, F2?).

Abstract: A two-layer multi-strand cord (60) has a modulus EC such that 50 GPa?EC?160 GPa. The cord comprises: (a) an internal layer (CI) of the cord made up of J>1 internal strands (TI) wound in a helix having a modulus EI, each internal strand (TI) comprising: an internal layer (C1) made up of Q?1 internal threads (F1), and an external layer (C2) made up of N>1 external threads (F2) wound around the internal layer (C1), and (b) an external layer (CE) of the cord made up of L>1 external strands (TE) wound around the internal layer (CI) of the cord, each external strand (TE) comprising: an internal layer (C1?) made up of Q??1 internal threads (F1?), and an external layer (C2?) made up of N?>1 external threads (F2?) wound around the internal layer (C1?).