The Waterloo Park Performance Pavilion is an outdoor music and performing arts venue located in a transformed park in Austin which serves a dual function as recreational space and ticketed concert venue. The amphitheater comprises a 20,000sf steel canopy composed of alternating layers of stacked I-beams, arranged in a denser pattern over the stage and feathering out at the edges. The canopy provides shelter to a concrete stage and support facility which houses concession, back-of-house and VIP area and is carefully integrated with the park landscape.
The structural scheme developed for the canopy satisfies the high stage loading requirements without taking away from the sculptural quality of the canopy. Fabricated steel trusses are carefully integrated into the “cloud” and supported on impossibly slender rectangular steel columns which also provide stability to the canopy without the use of lateral bracing. The exposed curved concrete walls of the support facility trace the geometry of the site and are carefully detailed in accord with its architectural expression. The framed concrete roof structure has been designed to carry high loading due to the canopy and green roof above while at the same time incorporating mechanical systems and maximizing floor to ceiling height.