In 1961, Eugene Leake hired Norman as the Director of the Rinehart School of Sculpture at the Maryland Institute College of Art (MICA) in Baltimore.

One of these project was the Riverside Centre,[7] designed by Harry Seidler and Associates in Brisbane, Australia, which includes a Carlberg piece titled Winter Wind - a 10 meter high indoor sculpture.

Carlberg has written: "My style of sculpture represents the movement known as 'modular constructivism', which grew into its maturity and popularity in the 50s and 60s."

[8]Carlberg's sculptures often consist of repetitions of such a unit, a basic shape capable of combining with other such elements in various ways—somewhat in the way a composer such as Bach or Webern might compose a piece of music by exploring the combinatorial possibilities of a single motivic cell, working within implicit constraints.

[9] Another theme that distinguished Carlberg's work in the Constructivism movement was his exploration in the positive-negative contrast of his modular units.

The concept is simple, but its realization into artwork can be challenge in achieving its goal in a subtle manner that does not detract from the piece in its entirety.