Tyre for a heavy vehicle of construction plant type, comprising: - a tread that is intended to come into contact with the ground, - a radial carcass reinforcement radially on the inside of the tread and comprising at least one carcass layer, - a crown reinforcement, radially on the inside of the tread and radially on the outside of the radial carcass reinforcement, and comprising a working reinforcement, a hoop reinforcement and a protective reinforcement, - the working reinforcement comprising at least two working layers (51, 52), each comprising inelastic metallic reinforcers that are crossed from one working layer to the next and make angles at least equal to 30° and at most equal to 35° with the circumferential direction, - the hoop reinforcement being formed by a circumferential winding of a ply comprising circumferential elastic metallic reinforcers that make angles at most equal to 2.5° with the circumferential direction, said circumferential winding of the ply extending from a first circumferential end to a second circumferential end radially on the outside of the first circumferential end, so as to form a radial stack of at least two hooping layers (71, 72), - the protective reinforcement comprising at least two protective layers (61, 62) made up of metallic reinforcers that are crossed from one protective layer to the next and make angles at least equal to 20° and at most equal to 40° with the circumferential direction, characterized in that the metallic reinforcers of the protective layers are elastic, have a diameter at least equal to 3 mm and a force at break at least equal to 800 daN, in that the metallic reinforcers of the working layers (51, 52) have a force at break at least equal to 2500 daN, in that the hoop reinforcement is radially positioned between the working layers (51, 52), and in that the circumferential metallic reinforcers of the hoop reinforcement have a force at break at least equal to 800 daN. - a tread that is intended to come into contact with the ground, - a radial carcass reinforcement radially on the inside of the tread and comprising at least one carcass layer, - a crown reinforcement, radially on the inside of the tread and radially on the outside of the radial carcass reinforcement, and comprising a working reinforcement, a hoop reinforcement and a protective reinforcement, - the working reinforcement comprising at least two working layers (51, 52), each comprising inelastic metallic reinforcers that are crossed from one working layer to the next and make angles at least equal to 30° and at most equal to 35° with the circumferential direction, - the hoop reinforcement being formed by a circumferential winding of a ply comprising circumferential elastic metallic reinforcers that make angles at most equal to 2.5° with the circumferential direction, said circumferential winding of the ply extending from a first circumferential end to a second circumferential end radially on the outside of the first circumferential end, so as to form a radial stack of at least two hooping layers (71, 72), - the protective reinforcement comprising at least two protective layers (61, 62) made up of metallic reinforcers that are crossed from one protective layer to the next and make angles at least equal to 20° and at most equal to 40° with the circumferential direction,