A method is provided that includes: weaving one first portion including warp and weft threads intertwined according to the fundamental weave of each portion of woven wall corresponding to this first portion, stopping introduction of weft threads after insertion of a weft thread associated with the positioning of one elongated element having a main axis, the weft thread being intertwined with the warp threads of each portion of woven wall, introducing each elongated element between the warp threads defining with the associated weft thread, the insertion position of this elongated element, and maintaining in position each elongated element and introducing one new weft thread intertwining warp threads of the structure according to the fundamental weave of each wall portion or according to at least one new weave, to resume production of the structure, with each elongated element not being taken in the structure.