After a series of historic lows, the Architecture Billings Index (ABI) was up more than eight points in March. Published by the American Institute of Architects (AIA), Washington, D.C., as a leading economic indicator of construction activity, the ABI reflects the approximate nine-to-twelve-month lag time between architecture billings and construction spending. The AIA reported the March ABI rating was 43.7 points, up from the 35.3 points mark in February. This was the first time since ...

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