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				 The index fell to 49.9 in January from 52.6 in 
				December. 
				 
				A reading above 50 indicates an increase in billings. 
				 
				The index, based on a survey of U.S. architects, reflects the 
				roughly nine to 12 months between architecture billings and 
				construction spending. 
				 
				"This easing in demand for design services is a bit of a 
				surprise given the overall strength of the market over the past 
				nine months," AIA Chief Economist Kermit Baker said. 
				 
				Industrial companies and their investors track the monthly index 
				as an indicator of future demand for machinery and components 
				used to construct buildings. 
				 
				The score for an indicator to measure trends in new design 
				contracts at architecture firms in January was 51.3. 
				 
				The new projects inquiry index rose to 58.7 in January from 51.3 
				in December. 
				 
				(Reporting by Rohit T. K. in Bengaluru) 
				
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