Willis Manor, named for the WWII Medal of Honor Winner, was procured as Design-Build P-123 Bachelor Quarters, Homeport Ashore Norfolk Naval Station (N40085-11-C-4572). The Clark Construction/LS3P design team was awarded the project as the first NAVFAC MIDLANT project evaluated for Total Ownership Cost (TOC). For the design-build team, P-123 represents the culmination of 12 years of involvement in design-build competition and delivery for NAVFAC and USACE. Many Clark Construction/LS3P projects have included BEQs and barracks, and the team has developed a wealth of knowledge in appropriate systems selection and implementation. more

Most HVAC design engineers use an array of sophisticated software calculation and modeling tools for load calculations and energy analysis. These tools offer almost total flexibility for the engineer to define physical arrangement, thermal parameters, operating schedules, internal loads and zoning. To achieve that flexibility, the input parameters are extensive and time consuming. more

Architects have long embraced BIM, and software developers are moving to add mechanical, electrical and plumbing to the models. ASHRAE Technical Committee 4.1, Load Calculation Data and Procedures, prepared a seminar for the 2010 ASHRAE Annual Conference to examine the state-of-the-art for using building information modeling (BIM) for load calculations, including methods of extracting data from the BIM model for import into traditional stand-alone calculation programs and use of built-in “native” BIM load calculation software. This article addresses native BIM load calculations only, although lessons learned regarding interoperability and data definition apply to both approaches.  more