Tire for heavy equipment

A tire for heavy equipment, comprising a pair of beads, at least one radial carcass reinforcement anchored within each bead to at least one bead wire, forming an upturn, said reinforcement being surmounted radially to the outside by a crown reinforcement formed of at least three working plies formed of inextensible metal reinforcement elements, which are parallel to each other within each ply and are crossed from one ply to the next forming angles α1, α2, α3 of between 15° and 35° with the circumferential direction, characterized in that the tire further comprises a first half-ply, formed of inextensible metal reinforcement elements and of width L′, on either side of the equatorial plane XX′ of the tire, arranged radially between the edges of two radially adjacent plies of said at least three working plies, the axially outer and inner ends of said half-ply being located, respectively, axially to the outside of the end of the widest of said two radially adjacent working plies and axially to the inside of the end of the least wide of said two radially adjacent working plies, at distances at least equal to the amount L′/5, the reinforcement elements of said half-ply forming with the circumferential direction an angle β, which firstly is greater in absolute value than 25°, and secondly is greater in absolute value than the largest angle formed by the elements of said two radially adjacent working plies by an amount between 5° and 15°, said reinforcement elements of each half-ply being crossed with the reinforcement elements of the working ply radially to the inside of said half-ply and closest radially to the carcass reinforcement.