Optimized Architecture of a Civil Engineering Tire

A radial tire for a civil engineering vehicle, comprising:

• a crown reinforcement, radially inside a tread having an axial width Lbdr and radially outside a carcass reinforcement,
• the crown reinforcement comprising at least two transverse reinforcer layers, one with a larger axial width having an axial width Ltmax and one with a smaller axial width having an axial width Ltmin,
• each transverse reinforcer layer comprising metal reinforcing elements parallel to each other, forming oriented angles at least equal to 10° and at most equal to 45° with the circumferential direction, at least two angles of two transverse reinforcer layers being of opposite sign,
• the crown reinforcement comprising at least one hooping layer having a maximum axial width Lfmax comprising extensible metal reinforcing elements parallel to each other and forming an angle at most equal to 5° with a circumferential direction (XX′) of the tire,
• each reinforcing element of each of the layers of the crown reinforcement being characterized by a structural elongation As, a force at break Fm (maximum load in N), a breaking strength Rm (in MPa), a total elongation at break At and a tensile Young's modulus, these characteristics being measured in accordance with ASTM D 2696-04 of 2014,
• each extensible metal reinforcing element of each hooping layer having, in its rubberized state extracted from a polymer matrix, a structural elongation Asf at least equal to 0.5%, a total elongation at break Atf at least equal to 3% and a tensile Young's modulus Ef at most equal to 150 GPa,
• wherein the reinforcing elements of the transverse reinforcer layers are extensible and have, in their rubberized state extracted from a polymer matrix, a structural elongation Ast at least equal to 0.5%, a total elongation at break Att at least equal to 3% and a tensile Young's modulus Et at most equal to 150 GPa, and
• wherein all of the metal reinforcers of the crown reinforcement are extensible.