Parallel Walls Mechanism #1, 2005. Steel, Springs, Cable. 8’ x 15’ x 2’.Piece is composed of seven steel frames that telescope outwards. Two large, centrally located springs activate mechanism that pushes first set of frames, pulley system causes 2nd and 3rd set to telescope outwards based on the position of the first set. Piece exerts enough outward force upon two parallel walls (roughly 15’ apart) to hold itself up.