The present invention provides a structural member comprising: a first round flange having a first surface extending longitudinally along the length thereof, a second round flange substantially parallel to the first round flange, the second round flange having a second surface extending longitudinally along the length thereof, an elongate web disposed between the first and second round flange, the web having: a first face configured to contact the first surface, a second face configured to contact the second surface, an upper edge, and a lower edge, wherein the first round flange, the second round flange and the elongate web are secured together to form a structurally integral unit in which at least part of the first face of the web is in contact with at least part of the first surface of the first round flange, and at least part of the second face of the web is in contact with at least part of the second surface of the second round flange. The present structural member may further comprises a third round flange having a third surface extending longitudinally along the length thereof, and a fourth round flange substantially parallel to the third round flange, the fourth round flange having a fourth surface extending longitudinally along the length thereof, wherein the first round flange, the second round flange and the elongate web are secured together to form a structurally integral unit in which at least part of the first face of the web is in contact with at least part of the first surface of the first round flange, and at least part of the second face of the web is in contact with at least part of the second surface of the second round flange, at least part of the first face of the web is in contact with at least part of the third surface of the third round flange, and at least part of the second face of the web is in contact with at least part of the fourth surface of the fourth round flange.

L'invention concerne un élément structurel qui comprend une première bride ronde, une deuxième bride ronde sensiblement parallèle à la première bride ronde, une bande allongée disposée entre les première et deuxième brides rondes, la bande ayant un bord supérieur et un bord inférieur, la première bride ronde, la deuxième bride ronde et la bande allongée étant fixées ensemble pour former une unité structurellement d'une seule pièce. L'élément structurel peut en outre comprendre une troisième bride ronde et une quatrième bride ronde sensiblement parallèle à la troisième bride ronde, les brides rondes et la bande allongée étant fixées ensemble pour former une unité structurellement d'une seule pièce dans laquelle la première face de la bande est en contact avec la première bride ronde et la troisième bride ronde, et la seconde face de la bande est en contact avec la deuxième bride ronde et la quatrième bride ronde.