Post construction and sidewall for cargo container

In a sidewall construction for use in a container, trailer and the like, said container, trailer and the like for use in carrying cargo in transportation systems and comprising a sidewall connected to a plurality of other walls including a front and rear wall, said sidewall construction being formed of an array of sections, each said section comprising:

• a first hollow core tubular member comprising an elongated one piece integral homogeneous tube formed by a plurality of substantially planar sides, one of said sides having a portion protruding into the core forming a depression extending for substantially the length of the tubular member;
• first and second coplanar flanges secured to said tube substantially coplanar with said one of said sides and substantially along the length thereof and on opposite sides thereof to form a post therewith:
• a first plate member secured to one of said flanges extending along the length of that flange and a second plate member secured to the other of said flanges extending along the length of the other flange, said plate members being coplanar and juxtaposed at a first edge region over the depression to form a cavity with the depression;
• and
• means for securing a further tubular member to the edge regions of each said first and second plate members distal said first tubular member;
• the first and second plate member being in spaced facing edge relation at the first edge region and further including a sealant between said plate members at the edge regions thereof and said tubular member in said cavity.