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DesIgn-BuIlD Done wrong// Introducing Design-Build Done Badly 2D tUrNS to 3D WIthoUt aN IMportaNt DetaIL IN thIS caSe StUDY. By patrick a. Burns, p.e., fSaMe, BGen, USaf(r) we’re All fAMIlIAr with the multitude of case studies presented at conferences and published in trade journals touting the latest design-build project success stories. Obviously we can benefit from sharing these good ideas. But what about the design-build errors, failures and mistakes—or, as I call them, “design-build done badly”? Because there are clearly lessons we can learn in not repeating past mistakes, I am writing a regular column in IQ devoted to sharing design-build sins of the past. Our first example of “design-build done badly” happened on a gymnasium project (the client, design-builder and location will always be kept confidential to protect the guilty). The $18 million project included a basketball court, indoor swimming pool, racquetball courts, weight-training complex, fitness rooms, sports bar and locker rooms. There was nothing out of the ordinary for this typical fitness center project. The problem surfaced when the roofing contractor came on site to start steel erection for the roof structure. The roof design consisted of light-gauge steel joists sitting on the masonry block walls, supporting a pitched standing-seam metal roof. The roofi ng contractor came to the construction site trailer to question what he was supposed to tie the roof structure to at the top of the walls. Much to the shock of the foreman on the job site, it turned out that there were no reinforcing bars in the masonry walls, which was called for in the design. leArnIng froM MIsTAkes How did this happen? Post-mortem examination revealed that three factors contributed to this example of “design-build done badly.” First, this was the general contractor’s first fast-track designbuild project, where the design packages were separated by sequence of construction. Second, it was the design partner’s first attempt at 3D Building Information Modeling (BIM). And third, it was the fi rst time the client, general contractor and design AE partner had worked together. It turned out that 3D BIM design included the rebar with the steel package and not the masonry wall package. The masonry lift 2D drawings pulled from the BIM model didn’t show the rebar details. Most glaringly, weekly design-build coordination meetings among the general contractor, design AE partner and upcoming key subcontractors to plan the next stages of design and construction did not occur. The lessons learned are simple and obvious, yet they happened because the client, general contractor and AE took the design-build process for granted. That would be like a football team just handing out play books without having a game plan or practices to properly prepare for an opponent. Do you have an interesting example of “design-build done badly”? If so, please contact Patrick A. Burns at patrickburnspe@gmail.com or iq@dbia.org. He will work with you in complete confidentiality to share the lessons learned with our readers to benefit our industry in a future issue of IQ. patrIck a. “pat” BUrNS, p.e., fSaMe, BGeN, USaf(r) IS a forMer VIce preSIDeNt of the feDeraL coNtractING GroUp for MorteNSoN coNStrUctIoN SINce 2005. prIor to that, he SerVeD 35 YearS IN the aIr force IN DeSIGN, coNStrUctIoN aND operatIoN of MILItarY BaSeS IN the UNIteD StateS aND oVerSeaS. 38 winter//2011 the quarterly publication of the design-build institute of america

Table of Contents for the Digital Edition of IQ Winter 2011: Annual Awards Issue

IQ Winter 2011: Annual Awards Issue

IQ Winter 2011: Annual Awards Issue - (Page C1)
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