Construction signs are erected around a section of the gallery floor. Graffiti artists are given construction worker uniforms and extended spray paint canisters with triggers. The graffiti artists paint under constraints: they use only straight lines, circles, and numbers.
At the end of the shift, plumbing and electrical are installed underneath the gallery floor per the indications provided by the graffiti artists. The graffitied section of floor is removed, electrical and pipe still attached to the other side, and hung on the wall.