What is a good guideline when evaluating art?

Explanation:

The artist, architect and engineer could work collaboratively to integrate the artist's ideas into the building/facility, or

Funds can be pooled for community-based public art projects, and

The architect must work cooperatively with the artist and provide the artist, in a timely manner, with all necessary plans, blueprints, drawings, and other such materials that the artist deems necessary to his/her work.

i'm not sure i completely understand your question, but i will do my best.

i think the answer you are looking for is sequence. (see below)

a repeated melodic fragment would be best defined as repetition, while repeated chords (different or the same) could be a chord progression. however, you then mentioned the chord and melodic fragment beginning on higher or lower pitches, in that case, the answer could be best defined as a sequence. the definition of a sequence is as follows: "the restatement of a motif or longer melodic (or harmonic) passage at a higher or lower pitch in the same voice."

let me know if this !