WE EXIST TO BUILD GREAT THINGS DPR Construction UCSF Mission Bay Pre-fabrication Effort Presentation...
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Transcript of WE EXIST TO BUILD GREAT THINGS DPR Construction UCSF Mission Bay Pre-fabrication Effort Presentation...
WE EXISTTO BUILDGREATTHING
S
DPR ConstructionUCSF Mission BayPre-fabrication Effort
Presentation for
Panelized SystemsUCSF Medical Center at Mission Bay
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
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
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
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
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
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
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
Pre-Fabrication
Ideas:– Brain-storming
session.• Every idea was
analyzed– Identified
Constraints
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
Pre-Fabrication
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
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
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
Pre-Fabrication
Potential Ideas:– Joint Racking for Plumbing & HVAC– Fire-stopping Systems– RE-Bar Cages– Pre-Fabricate Wall Panels
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
Drywall/Stud Modeling
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
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
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-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…?
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
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
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
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
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
Panelized Systems
In-fill– Traditional “stick
framing”– King studs, infill
above 9’6”
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
Installation Process
Process:1. Corner, Kong, &
Top Track Placed2. Panels laid in3. In-fill framing
comes behind.4. Walls inspected
and closed.
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
Alternate Installation Process
Process:1. Corner, Kong, &
Top Track Placed2. In-fill framing.3. Panels laid in4. Walls inspected
and closed.
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
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
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
Floor Plan
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
Assembly Drawing
Assembly Drawings Contain:– Individual
Panels– Matched up– Total Wall
Assembly with Infill Framing
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
Panelized Systems Combine panels
& infill– Total wall
system– Higher Quality– Shorter
installation schedule
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
Panelized Systems
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
Panelized Systems
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
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?
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
Advantages
Quality Control Productivity Rate Productivity Tracking Waste Reduction Schedule Benefits = Cost Benefits
WE EXISTTO BUILDGREATTHING
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DPR ConstructionUCSF Mission BayPre-fabrication Effort
What’s Next
Currently Modeling Critical Studs Prior to Coordination
Subs should be able to coordinate around studs supporting panels.
To