Post and joint construction

A corner support post for shelving and the like comprising:

• an elongate member of sheet metal having first and second surfaces and further having two side portions that (1) generally define an interior right angle with said first surface facing inwardly toward, and receiving a corner of, a shelf and (2) generally define an exterior reflex angle with said second surface facing away from said shelf;
• each one of said elongate member side portions having:
• a planar first side wall arranged in a substantially perpendicular relationship with the other side portion first side wall and arranged for being positioned adjacent the shelf;
• a planar second side wall extending outwardly from said first side wall;
• a planar third side wall extending from said second side wall, said third side wall being oriented in a plane offset outwardly from, and generally parallel to, said first side wall;
• and
• an edge defined by said sheet metal and a generally hollow, cylindrical configuration formed in said sheet metal extending from said planar third side wall to said edge, said cylindrical configuration being formed to curve relative to said interior right angle to locate said edge adjacent said sheet metal second surface so that said second surface on the third side wall is located between said edge and said shelf, said cylindrical configuration also extending toward said shelf from said third side wall so that a plane defined by, and extending from, said first surface on said first side wall is substantially tangent to said cylindrical configuration wherein a receiving channel is defined by said first surface and the cooperative structural relationship among said cylindrical configuration, said third side wall, and said second side wall.