A building in Salem, Ore., certified under the Leadership in Energy and Environmental Design program had to be vacated recently due to structural issues, writes Chris Cheatham, a LEED-accredited professional and construction consultant. Cracks in walls and ceilings have worsened and appear to be due to a buckled post-tensioned concrete slab. What's more, 33 to 35 of the building's 220 columns have been found to bear more weight than code allows. Cheatham asks what grounds there might be for LEED decertification.

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