Network comprising a plurality of: - first modular elements, each modular element having a body with a superior face (a), an inferior face (b), an interior face (c) and an exterior face (d) representing coaxial cylinder sectors and lateral faces (e, f) extending vertically between the superior face (a) and the inferior face (b), the modular element comprising in the interior at least two oblique channels and at least one vertical channel being provided between the oblique channels, the vertical channel uniting the superior face (a) and the inferior face (b) of the body, said channels (8,9) communicating between them in order to form at least one main half joint, the oblique channels opening to the superior face (a) and/or the inferior face (b), extending between the main half joints, or from the median zone of at least the superior face (a) to the median zones of the lateral faces (e, f) of the modular element, forming secondary half joints, the vertical channel opening to the superior face (a) and the inferior face (b), extending from the main half joint to the median zone of the opposed superior face (a) or inferior face (b) to form a tertiary half joint, the modular element being provided with joint elements (16,17) for joining with at least another modular element; and - second modular elements, each modular element having a U profile, with a horizontal bottom face (i) provided with at least one vertical channel, an interior wall (j) and an exterior wall (k), the interior wall (j) and the exterior wall (k) representing coaxial cylinder sectors, and a lid having a horizontal upper face provided with at least one vertical channel and assemblage elements (m) for joining the lid with the U profile, wherein the walls (j, k) and the faces (i, I) of the U profile and of the lid delimit a compartment inside the modular element, the modular element being provided with joint elements (16,17) for joining with at least another modular element, wherein the network is obtained by assembling the plurality of modular elements (1,2), the network including horizontal annular channels formed by a plurality of the compartments, main joints, secondary joints and tertiary joints, connected through vertical channels (8,15) and oblique channels. - first modular elements, each modular element having a body with a superior face (a), an inferior face (b), an interior face (c) and an exterior face (d) representing coaxial cylinder sectors and lateral faces (e, f) extending vertically between the superior face (a) and the inferior face (b), the modular element comprising in the interior at least two oblique channels and at least one vertical channel being provided between the oblique channels, the vertical channel uniting the superior face (a) and the inferior face (b) of the body, said channels (8,9) communicating between them in order to form at least one main half joint, the oblique channels opening to the superior face (a) and/or the inferior face (b), extending between the main half joints, or from the median zone of at least the superior face (a) to the median zones of the lateral faces (e, f) of the modular element, forming secondary half joints, the vertical channel opening to the superior face (a) and the inferior face (b), extending from the main half joint to the median zone of the opposed superior face (a) or inferior face (b) to form a tertiary half joint, the modular element being provided with joint elements (16,17) for joining with at least another modular element; and - second modular elements, each modular element having a U profile, with a horizontal bottom face (i) provided with at least one vertical channel, an interior wall (j) and an exterior wall (k), the interior wall (j) and the exterior wall (k) representing coaxial cylinder sectors, and a lid having a horizontal upper face provided with at least one vertical channel and assemblage elements (m) for joining the lid with the U profile, wherein the walls (j, k) and the faces (i, I) of the U profile and of the lid delimit a compartment inside the modular element, the modular element being provided with joint elements (16,17) for joining with at least another modular element, wherein the network is obtained by assembling the plurality of modular elements (1,2), the network including horizontal annular channels formed by a plurality of the compartments, main joints, secondary joints and tertiary joints, connected through vertical channels (8,15) and oblique channels.