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Presentation for Panelized Systems UCSF Medical Center at Mission Bay. Presenters. Steve Spence: DPR General Superintendent Dan Casale: DPR BIM Engineer Project Team: University of California San Francisco DPR Construction Anshen & Allen Architects Cambridge Group. Project Background.
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Presentation for Panelized Systems UCSF Medical Center at Mission Bay
Presenters • Steve Spence: DPR General Superintendent • Dan Casale: DPR BIM Engineer • Project Team: • University of California San Francisco • DPR Construction • Anshen & Allen Architects • Cambridge Group
Project Background • UCSF Mission Bay Campus • Hospital – 650,000 SF – OSHPD 1 • Outpatient Building – 250,000 SF – OSHPD 1/3 • Energy Center – 20,000 SF • Total Value = $1.68 Billion • Target Budget = $1.58 Billion <$100M> • UCSF Medical Center at Mission Bay
Scope of Work • Produce fully coordinated models that can be used to create OSHPD submittals for the Hospital / OPB and EC • Preconstruction Services Only • Currently over by $100M and team needs to address this • Use BIM / VDC and Lean Principles
Pre-Fabrication • Ideas: • Brain-storming session. • Every idea was analyzed • Identified Constraints
Pre-Fabrication • Ideas that Don’t Work • Pre-Fab Bathrooms • Structure Won’t Allow It • Joint Racking • OSHPD Won’t Allow It • Pre-Fabbed Electrical Rooms • Med-Gas Rack • OSHPD Won’t Allow It • Ideas That Work • Industry Standard: • Pre-cut Conduit & MC • Pre-Punch Panels • Pre-fab J-Boxes • Trim for Fixtures • Bathroom Carriers • Pre-Spooled & Jointed Pipe • Pre-Section Duct • VAV & Attenuator Sections • Soffit Drops • Box Headers • Headwall Units
Pre-Fabrication • Potential Ideas: • Joint Racking for Plumbing & HVAC • Fire-stopping Systems • RE-Bar Cages • Pre-Fabricate Wall Panels
Software • Challenges: • Software Under-Developed • Automated Openings • Automate Backing • Further Develop Shop-Drawings • Pre-Fabrication • Benefits: • Much more efficient than traditional placement. • Identify King & Corner Stud Clashes • Identify Constructability Constraints • Facilitate Pre-fabrication Effort
Panelized Systems • Prefabrication • Currently performing feasibility analysis. • What’s the engineering say? • Can it be coordinated? • How many panels must be pre-fabbed to break even? • How big can they be? • Optimal height? • Schedule Impact? • Where should we target? • Etc…?
Panelized Systems • Preliminary Research: • Labor Unions • Pre-Fabrication Site • Engineering Requirements • OSHPD Approval • Machine Proposal • Preliminary Answers: • Labor Unions must work locally • Pre-fab site subject to location constraints • Panels can span 8’ and are stronger than traditional walls • OSHPD is OK • Custom Machine can be built
Panelized Systems • Hybrid system • Individual Panels • Up to 8’ in length • Target 6” above ceiling • Designed lengths for “layout framing” • Complete with • Backing • In-wall MEP • Top & bottom track
Panelized Systems • In-fill • Traditional “stick framing” • King studs, infill above 9’6”
Installation Process • Process: • Corner, Kong, & Top Track Placed • Panels laid in • In-fill framing comes behind. • Walls inspected and closed.
Alternate Installation Process • Process: • Corner, Kong, & Top Track Placed • In-fill framing. • Panels laid in • Walls inspected and closed.
Target Areas • Identify Repetitive Areas of the Floor Plan • Same Rooms= Repeating Panels • 10 Different Panels Used 100x’s • Vs. • 100 Panels Used 10x’s
Assembly Drawing • Assembly Drawings Contain: • Individual Panels • Matched up • Total Wall Assembly with Infill Framing
Panelized Systems • Combine panels & infill • Total wall system • Higher Quality • Shorter installation schedule
Challenges • Models for 3-6 have already been created and coordinated. • 30,000SF every 20 days. • Pre-fabrication was not addressed during these phases • Critical studs occur every 4’ in most patient rooms • Schedule Impact • What is the schedule impact? Are we more efficient? What are the productivity rates? • Engineering • Do panels have to match infill above? • How far can we span?
Advantages • Quality Control • Productivity Rate • Productivity Tracking • Waste Reduction • Schedule Benefits = Cost Benefits
What’s Next • Currently Modeling Critical Studs Prior to Coordination • Subs should be able to coordinate around studs supporting panels. • To