Landscape Architect & Specifier News

JUL 2014

LASN is a photographically oriented, professional journal featuring topics of concern and state-of-the-art projects designed or influenced by registered Landscape Architects.

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Page 61 of 157

62 Landscape Architect and Specifier News sized for evaporation. Some nozzles can produce a fog that quickly evaporates, so as to keep the surrounding area dry. Emanating from the poles are misting clouds that rise, swirl about and eventually fall onto those who seeks their cooling precipitation. Although the original design specified a completed internal circle of poles affixed with fog nozzles to produce a solid spherical shape, the team decided the same visual effect could be produced using much less water. The solution was to "core" out fog nozzles from the inner most poles creating a hollow sphere. Beneath the fog The fog system has a 400-gallon soft water atmospheric tank for water storage and recirculation, and two Koolfog Atacama 12-gpm high-pressure pumps with filtration to protect from debris and sediment. The system controls are co-located with the pumps in an equipment room interfaced with the museum's building management system. Two main high-pressure flexible hoses rout water from the pump to a manhole adjacent to the Cloud Arbor. From there, each line is split through a distribution manifold and routed underground to the stainless steel tubing networks that service the individual rows of poles, ultimately pressurizing to 1000 psi as water emits through the fog nozzles. about the site artist Ned Kahn of Ned Kahn Studios, Sebastopol, Calif., is the artist behind Cloud Arbor. His site art replicates the forms and forces of nature, which can be classified in five categories: fire/light, fog, sand, water, wind. His prolific work is seen across the U.S. and in Canada, Germany, Switzerland, Netherlands, Singapore, Australia, China, United Arab Emirates. above Koolfog notes that when the wind conditions are calm, the fog nozzles "sculpt a spherical cloud, spinning and rising in the winter and spinning and falling in the summer. As the wind picks up, the spherical shape becomes distorted. The intent is to create "a porous environment that merges with the atmosphere, blurring the boundary between atmosphere and architecture." The museum created a $400,000 endowment to help pay for the upkeep of Cloud Arbor. PhOTO: NEd KAhN Cloud Arbor (Continued from page 60)

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