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Chandler Architects Harness Nature to Upgrade City Hall

McNICHOLS® Perforated Metal panels replicate the forms of nature while providing shade and reducing solar heat gain for Chandler City Hall.

 |  1 min read

The Hole Objective

The architects of Chandler City Hall in Chandler, Arizona, wanted to create a design element that would replicate the forms of nature while providing shade and reducing solar heat gain for the building.

The Hole Solution

The artist used McNICHOLS® Round Hole Perforated Metal to create “Turbulent Shade,” a wall of 6-by-12-inch stainless steel panels. Designed to swing with the desert wind, the panels provide shade during the day and reduce solar heat gain during hot summer afternoons. The panels also make a statement about the community’s commitment to sustainability.

View of Perforated facade lit with LED lights
View of Perforated facade lit with LED lights


The 18-gauge panels have a 1/16-inch round hole that is 1/8-inch center staggered, creating 23% light diffusion. Attached to a Stainless Steel bar by two metal cylinder arms that float in a grommet, each Perforated Metal panel glides in the grommet, sitting about 30 inches from the building’s glass curtain wall. By day, the panels provide shade while allowing people to see out, yet obscuring the interior view from the street. Adding to the building are low-energy LED lights placed at the top and bottom, casting colors onto the moving panels.

2,500 Perforated panels hang on the building's facade
2,500 Perforated panels hang on the building's facade

McNICHOLS® PERFORATED METAL, Round, Stainless Steel, Type 304, 18 Gauge (.0500" Thick), 1/16" Round on 1/8" Staggered Centers, 23% Open Area

  • Aesthetic attributes
  • Strength and durability
  • Sun shading attributes
  • Insulating properties
  • Fabrication ease
  • Lightweight
  • Corrosion resistance
  • Low maintenance
Chandler Architects Harness Nature to Upgrade City Hall
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