Alcoa Business Services Center Pittsburgh Pennsylvania Efficiency Considerations

Alcoa Business Services Center Pittsburgh, Pennsylvania Efficiency Considerations for Modern Design Geoffrey E. Measel – Structural Option 2004 Senior Thesis

Introduction Thesis research • Structural Depth • Alternate Floor Systems • Alternate Foundation Systems • Core Framing For UFADS • Mechanical Breadth • Under Floor Air Distribution System • Construction Breadth • Direct Cost Of Each System • Overall Building Cost • Schedule Impact Alcoa Business Services Center Geoffrey Measel - Structural

Introduction Presentation Outline n n n Introduction Structural Depth – Alternate Floors – Alternate Foundation – Building Impacts Mechanical Breadth – Under Floor Redesign Construction Management Conclusions Questions Alcoa Business Services Center Geoffrey Measel - Structural

Introduction Project Players General Contractor: PJ Dick Inc. Construction Manager: PJ Dick Inc. Architects: Primary: Pfaffmann & Associates Interior: IKM Inc. Engineers: Structural: Atlantic Engineering Services Mechanical: Ray Engineering Electrical: Hornfeck Engineering, Inc. Site Consultant: Civil & Environmental Consultants Inc. Owner: Jackson Row Holdings C/O The Rubinoff Company Alcoa Business Services Center Geoffrey Measel - Structural

Introduction Location Alcoa Business Services Center Geoffrey Measel - Structural

Introduction Building Statistics n Function Types: n n Size: n n n 228, 500 NRSF 6 Stories Cost Information: n n n Multi-tenant office Ground Floor Retail Underground Parking Garage Overall Cost: $26 million $19. 3 million (excluding tenant fit-out work) Delivery Method: Design-Bid-Build with CM at Risk Alcoa Business Services Center Geoffrey Measel - Structural

Structural EXISTING STEEL FRAMING Alcoa Business Services Center Geoffrey Measel - Structural

Structural existing core framing Alcoa Business Services Center Geoffrey Measel - Structural

Presentation Outline n n n Introduction Structural Depth – Alternate Floors – Alternate Foundation – Building Impacts Mechanical Breadth – Under Floor Redesign Construction Management Conclusions Questions Alcoa Business Services Center Geoffrey Measel - Structural

Structural floor re-design n n n Existing Composite My Existing (Control for Study) Percentage Composite – Shored – Unshored – Cambered Non-Composite Joists Pre-Cast Concrete Alcoa Business Services Center Geoffrey Measel - Structural

Structural floor re-design Floor Framing Comparison Alcoa Business Services Center Geoffrey Measel - Structural

Structural Foundation Re-design n 7. 5” Diameter Mini-Pile – Pall =(. 4 to. 5) Fy As + (. 35 to. 45) F’c Ac n Fy =Yield Stress of Steel Casing n As =Cross-sectional area of steel casing n F’c =28 day Compressive Strength of grout n Ac =Cross-Sectional area of grout (80 ksi) (7. 86 in 2) (4000 psi) (35. 78 in 2) Mini-Piles Existing Auger Cast Piles 150 Ton Capacity 95 Ton Capacity 300 Piles 374 Piles Alcoa Business Services Center Geoffrey Measel - Structural

Structural Core Re-Design Existing Core Framing n My Existing (Control for Study) n Raised Floor Framing n Beam Raised Floor n Raised Core Framing n Alcoa Business Services Center Geoffrey Measel - Structural

Structural Core Re-Design Existing Core Framing Alcoa Business Services Center Geoffrey Measel - Structural

Structural Core Re-Design Raised Floor Core 24” Raised Tate Access Floor Alcoa Business Services Center Geoffrey Measel - Structural

structural Core Re-Design Beam Raised Floor W 21 X 44 with Slab Alcoa Business Services Center Geoffrey Measel - Structural

Structural Core Re-Design Raised Core Framing Alcoa Business Services Center Geoffrey Measel - Structural

Structural Core Re-Design Raised Core Framing Option 1 Option 2 Alcoa Business Services Center Geoffrey Measel - Structural

Structural Core Re-Design Core Framing Comparison Alcoa Business Services Center Geoffrey Measel - Structural

Presentation Outline n n n Introduction Structural Depth – Alternate Floors – Alternate Foundation – Building Impacts Mechanical Breadth – Under Floor Redesign Construction Management Conclusions Questions Alcoa Business Services Center Geoffrey Measel - Structural

Mechanical Under-Floor Raised Floor Design Con. Core 2000 n System Weight: 11. 5 lbs/sq. ft n Concentrated Load: 2000 lbs n Uniform Load: 500 lbs/sq. ft n Ultimate Load: 5750 lbs n Impact Load: 150 lbs Alcoa Business Services Center Geoffrey Measel - Structural

Mechanical Duct work Re-Design Existing Duct Plan Re-Designed Duct Plan Alcoa Business Services Center Geoffrey Measel - Structural

Presentation Outline n n n Introduction Structural Depth – Alternate Floors – Alternate Foundation – Building Impacts Mechanical Breadth – Under Floor Redesign Construction Management Conclusions Questions Alcoa Business Services Center Geoffrey Measel - Structural

Const. Mgmt Cost Summary Overall Floor Framing Cost Comparison Alcoa Business Services Center Geoffrey Measel - Structural

Const. Mgmt cost summary Overall Core Framing Cost Comparison Alcoa Business Services Center Geoffrey Measel - Structural

Const. Mgmt cost summary Foundation Comparison n Existing Auger Cast Piles – 374 Piles *( 50’) * $30. 00/ft = $561, 000 – Schedule: 50’ (374 piles) / 350 = 53 days n Micro-Piles (Mini-Piles) – 300 Mini-piles*($55. 00/ft) 50’ = $825, 000 – 300 mini-piles * 50’ / 275 ft/day = 54. 5 days Alcoa Business Services Center Geoffrey Measel - Structural

Const. Mgmt cost summary Projected Mechanical Savings Reduction of Construction Cost: -HVAC Cost = $283, 040 Enhancement of Property Value: -Tenant Re-Occupancy = $312, 131 Improvement in Tenant Attractiveness: -Life Cycle Savings (1 st Year) = $304, 168 -Staff Productivity (1 st Year) = $635, 400 Alcoa Business Services Center Geoffrey Measel - Structural

Summary & Conclusions n Structural: – Floor Framing: 70% Composite Unshored – Watch Steel Prices- 100% Comp. Shored – Foundation: Stay with Auger Cast Piles – If Schedule becomes an issue go with Mini -Piles – Core Framing: Raise the Core n Mechanical: Under Floor Air Distribution Alcoa Business Services Center Geoffrey Measel - Structural

Special Thanks n Atlantic Engineering Services – John Schneider – Andy Verrangia n n – – – PJ Dick – Frank Babic – Matt Wetzel n Pfaffman & Associates n G. E. M. Inc. AE Faculty Kevin Parfitt Walt Schneider Jonathan Dougherty n AE Classmates n My Family Alcoa Business Services Center Geoffrey Measel - Structural