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Team Pacific. Computer Integrated A/E/C Stanford University May 15, 1998. Background…. Year: 2010 Task: Design Classroom/Lab Facility for Pacific University School of Engineering, Oregon Facility Will Provide a Home for Innovative Courses which Take a Team Approach to Design
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Team Pacific Computer Integrated A/E/C Stanford University May 15, 1998
Background… • Year: 2010 • Task: Design Classroom/Lab Facility for Pacific University School of Engineering, Oregon • Facility Will Provide a Home for Innovative Courses which Take a Team Approach to Design • Maintain Footprint of Existing Buildings • Construction Schedule of One Year • Budget: $4.5 million
Scheme 1 • Architecture • Utilize Square Foundation • Bridging the Disciplines • Engineering • Simple Structural Design • Bearing Walls • Construction • Preliminary Estimate: $4.38 million • Bearing Walls allow for Fastest Construction, Lowest Expense
Scheme 2 • Architecture: • Connectivity through View • Engineering: • Simple design • Long Spans • Construction: • Preliminary Estimate: $4.58 million • Schedule Constraints Easily Met
Scheme 3 • Architecture: • Innovative Design: Breaking Away From the Foundation • Flipped L-Shape to For More Interesting Appearance • Engineering: • Large Cantilevers • XXX System • Construction: • Preliminary Estimate: $4.58 million • Limited Space for Large Square Footage of Material • Difficult to Construct
Scheme 4 • Architecture • Breaking Away From Box Shape • Shape Fits Context of Site • Engineering • Large Cantilevers • xxx System • Construction • Preliminary Estimate: $9.17 million • Strange Shape Difficult to Construct
Why Schemes 3 & 4? • Preferred Architecture • Scheme Three Feasible--Safety Net • Scheme Four Best--Challenge
Scheme 3 Issues • Square footage • Over-budget • Material Costs • Schedule • Cantilevers • Vertical Circulation
Scheme 4 Issues • Over-budget • Schedule • Limited story heights • Walls
Scheme 4 Evolutions • Over-budget • Square footage • Material Costs • laminated wood • concrete • Roof options • Interior Systems & Finishes
Scheme 4 Evolutions • Schedule • Enclosure • Prefabricate Formwork • Precast exterior walls • Innovative Construction System • Relocation of Labs
Story Heights • Post-Tensioning to control deflections • thin flat slab • cost • mechanical • Consistent column spacing
Scheme 4 Evolution • Walls • Essential to design • No shear walls! • Innovative Construction Method • Material options • EIFS • Steel panels • concrete panels
Pacific Project • Final Decisions
Design Intent School of Engineering • Innovative in·no·va·tion 1 : the introduction of something new 2 : a new idea, method, or device : NOVELTY • Functionable • Vistas
Design Intent School of Engineering • Innovative in·no·va·tion 1 : the introduction of something new 2 : a new idea, method, or device : NOVELTY • Functionable • Vistas
Design Intent School of Engineering • Innovative in·no·va·tion 1 : the introduction of something new 2 : a new idea, method, or device : NOVELTY • Functionable • Vistas
Design Intent School of Engineering • Innovative in·no·va·tion 1 : the introduction of something new 2 : a new idea, method, or device : NOVELTY • Functionable • Vistas
Design Intent School of Engineering • Innovative in·no·va·tion 1 : the introduction of something new 2 : a new idea, method, or device : NOVELTY • Functionable • Vistas
Design Intent School of Engineering • Innovative in·no·va·tion 1 : the introduction of something new 2 : a new idea, method, or device : NOVELTY • Functionable • Vistas
Structural Design • Post-Tensioning • Thinner Slab • Reduce Deflections • Reduce Cracking • Reduce Jointing
Structural Design • Slab • 8” Concrete Flat Slab • Span to depth ratio 44 • Post-Tensioned • 1/2” monostrands • 4000psi concrete
No Column, No Problem? • PROBLEM... • Auditorium moved to first floor and a Column needed to be removed • Solution • Use flat plate on roof to add rigidity to upper floors above the missing Column.
Structural Solution • Transfer Beam • Missing column significantly increased Stresses in Slab • Addition of Transfer Beams • Horizontally • Vertically
Ductile Frame Placement centers of rigidity and mass Avoid Torsion No Beams labor to form too expensive mechanical systems Lateral Resistance
Static Load Method • Moments too high! • More beams • or MRF in the interior • More ductile frames cheaper • less form work
Moment Capacity Max Neg. = 38.2k-ft Capacity = 41.2 k-ft ok Max Pos. =1.7 k-ft Capacity = 30.3 k-ft ok Max. inelastic response disp. UBC 97’ 1630.10.2 max Displacement Flr 2 = 2.64” Flr 3 = 5.28” Roof = 7.92” OK Capacity Checks
A look into the Future • Materials • Field Construction Methods • Management Construction Methods • Communications • Equipment • Market
Wall Systems • light cement • Energy Efficient • Easy to score and snap • Water-damage resistant • Economical • Fire resistant
Post-Tensioned Floor System Pros • Cheap • Light • Fast Cons • Hard to Retrofit • Dangerous
Requirements of HVAC System • Codes: • Title 24, UBC, UMC, SMACNA • Design: • Space (3’6”) • 24 Hour Cooling to Computer Area • Compatibility with other systems • Energy efficient • Atheistics
Rationale: Hydronic System • Two-pipe VAV reheat system • Savings in overall equipment cost, installation, and annual operating costs • Easily zoned for modulating temperatures • Design requirement of limited ceiling height • Straight forward to install
Hydronic Radiant Floor • Hydronic Radiant Floor (HRF) • PEX tubing within concrete slab or subfloor • Operating costs 20%-40% lower than Forced Air Systems • Need special training to install • Extra structural costs • Lower water temperature required
Hydronic Radiant Ceiling • Reduced space • Security/Acoustic panels available • Centrally located mechanical system • Architecturally invisible • No special training to install • Easily zoned especially in re-partitioned spaces