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                 A 210-m2 (2250–sf) unglazed, transpired solar air-heating collection (TSAC) system has greatly improved the energy efficiency of Cambridge, Massachusetts senior housing. The Lyndon B. Johnson (LBJ) Apartments, a 180–unit development owned by the Cambridge Housing Authority (CHA), benefited from the technology, which integrated aesthetically, seamlessly, and cost–effectively within its architecture. 
                     
                  
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             LAW 
               
            
              
             
               
            Design professionals face significant liability from a variety of sources. Minimizing this exposure should be on the minds of all architects and engineers when drafting contracts. This article examines three ways to lower one’s liability exposure to a client. 
               
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             EVENTS 
            
               
               
          
                 
            
                 
            June 16-18
            WDMA Technical & Manufacturing Conference
            Window and Door Manufacturers Association 
            Minneapolis, Minnesota
             www.wdma.com 
                 
            September 30-October 3
            CONSTRUCT & the CSI Annual Convention
            Informa Exhibitions 
            St. Louis, Missouri
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            November 18-20
            Greenbuild International Conference and Expo
            Informa Exhibitions 
            Washington, D.C.
             greenbuildexpo.com 
               
              
             
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                         TOP TRENDING ARTICLES 
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                        In the May 2012 issue of The Construction Specifier, this author wrote an article, “Cause and Effect,” which called for a cultural shift in how the architectural/engineering community approaches curtain and window wall problems. 
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                        The 2015 edition of the ANSI/AWC Wood Frame Construction Manual (WFCM) for One- and Two-Family Dwellings provides guidance for wood-frame construction in residential as well as commercial structures that fit within its scoping. 
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                        Based on the information presented in the article, “Specifying Broomed Exterior Concrete Surfaces” by Ward R. Malisch, PE, PhD, Bruce A. Suprenant, PE, and Frank Salzano, PE, PhD in the April issue of The Construction Specifier, this article includes recommendations for specifying exterior concrete surfaces.  
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