• Dive summary:
• The monthly Architectural Billings Index, a leading indicator of construction business, had been growing for almost a year, but April's standing fell into territory that means firms were signing up less work than in March.
• The index, calculated by the American Institute of Architects from members' answers to questions, was at 48.6 in April, below March's 51.9 and showing less work being signed up because it was below 50.
• Another measure, an index of new-project inquiries, was still growing in April, at 58.5, though not as much as it had in March, when the growth in potential clients was at 60.1.

From the article:

This score reflects a decrease in demand for design services (any score above 50 indicates an increase in billings) and is the lowest mark since July 2012. ...