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Alcoa Business Services Center. Pittsburgh, Pennsylvania. Efficiency Considerations for Modern Design. Geoffrey E. Measel – Structural Option2004 Senior Thesis. Introduction Thesis research. Structural Depth Alternate Floor Systems Alternate Foundation Systems Core Framing For UFADS

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AlcoaBusiness Services Center

Pittsburgh, Pennsylvania

Efficiency Considerations for Modern Design

Geoffrey E. Measel – Structural Option2004 Senior Thesis


IntroductionThesis 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


IntroductionPresentation Outline

  • Introduction

  • Structural Depth

    • Alternate Floors

    • Alternate Foundation

    • Building Impacts

  • Mechanical Breadth

    • Under Floor Redesign

  • Construction Management

  • Conclusions

  • Questions


IntroductionProject 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/OThe Rubinoff Company


IntroductionLocation


IntroductionBuilding Statistics

  • Function Types:

    • Multi-tenant office

    • Ground Floor Retail

    • Underground Parking Garage

  • Size:

    • 228,500 NRSF

    • 6 Stories

  • Cost Information:

    • Overall Cost: $26 million

    • $19.3 million (excluding tenant fit-out work)

  • Delivery Method: Design-Bid-Build with CM at Risk


  • StructuralEXISTING STEEL FRAMING


    Structuralexisting core framing


    Presentation Outline

    • Introduction

    • Structural Depth

      • Alternate Floors

      • Alternate Foundation

      • Building Impacts

    • Mechanical Breadth

      • Under Floor Redesign

    • Construction Management

    • Conclusions

    • Questions


    Structuralfloor re-design

    • Existing Composite

    • My Existing (Control for Study)

    • Percentage Composite

      • Shored

      • Unshored

      • Cambered

    • Non-Composite

    • Joists

    • Pre-Cast Concrete


    Structuralfloor re-design

    Floor Framing Comparison


    StructuralFoundation Re-design

    • 7.5” Diameter Mini-Pile

      • Pall =(.4 to .5) Fy As + (.35 to .45) F’c Ac

        • Fy =Yield Stress of Steel Casing (80ksi)

        • As =Cross-sectional area of steel casing (7.86 in2)

        • F’c =28 day Compressive Strength of grout (4000 psi)

        • Ac =Cross-Sectional area of grout (35.78 in2)

    Mini-Piles

    150 Ton Capacity

    300 Piles

    Existing Auger Cast Piles

    95 Ton Capacity

    374 Piles


    StructuralCore Re-Design

    • Existing Core Framing

    • My Existing (Control for Study)

    • Raised Floor Framing

    • Beam Raised Floor

    • Raised Core Framing


    StructuralCore Re-Design

    Existing Core Framing


    StructuralCore Re-Design

    Raised Floor Core

    24” Raised Tate Access Floor


    structuralCore Re-Design

    Beam Raised Floor

    W21X44 with Slab


    StructuralCore Re-Design

    Raised Core Framing


    StructuralCore Re-Design

    Raised Core Framing

    Option 1

    Option 2


    StructuralCore Re-Design

    Core Framing Comparison


    Presentation Outline

    • Introduction

    • Structural Depth

      • Alternate Floors

      • Alternate Foundation

      • Building Impacts

    • Mechanical Breadth

      • Under Floor Redesign

    • Construction Management

    • Conclusions

    • Questions


    MechanicalUnder-Floor

    Raised Floor Design

    ConCore 2000

    • System Weight: 11.5 lbs/sq. ft

    • Concentrated Load:2000 lbs

    • Uniform Load:500 lbs/sq. ft

    • Ultimate Load:5750 lbs

    • Impact Load:150 lbs


    MechanicalDuct work Re-Design

    Existing Duct Plan

    Re-Designed Duct Plan


    Presentation Outline

    • Introduction

    • Structural Depth

      • Alternate Floors

      • Alternate Foundation

      • Building Impacts

    • Mechanical Breadth

      • Under Floor Redesign

    • Construction Management

    • Conclusions

    • Questions


    Const. MgmtCost Summary

    Overall Floor Framing Cost Comparison


    Const. Mgmtcost summary

    Overall Core Framing Cost Comparison


    Const. Mgmtcost summary

    Foundation Comparison

    • Existing Auger Cast Piles

      • 374 Piles *( 50’) * $30.00/ft = $561,000

      • Schedule: 50’ (374 piles) / 350 = 53 days

    • Micro-Piles (Mini-Piles)

      • 300 Mini-piles*($55.00/ft) 50’ = $825,000

      • 300 mini-piles * 50’ / 275ft/day = 54.5 days


    Const. Mgmtcost 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 (1st Year) = $304,168

    • -Staff Productivity (1st Year) = $635,400


  • Summary & Conclusions

    • 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

  • Mechanical: Under Floor Air Distribution


  • Special Thanks

    • Atlantic Engineering Services

      • John Schneider

      • Andy Verrangia

    • PJ Dick

      • Frank Babic

      • Matt Wetzel

    • Pfaffman & Associates

    • G.E.M. Inc.

    • AE Faculty

      • Kevin Parfitt

      • Walt Schneider

      • Jonathan Dougherty

    • AE Classmates

    • My Family


    Questions

    ?


    Floor Framing Summary


    Structuralfloor re-design

    Percentage Composite Comparison Unshored


    Structuralfloor re-design

    Percentage Composite Comparison Shored


    Structuralfloor re-design

    Existing Floor Comparison


    StructuralCore Re-Design

    Steel Systems Comparison


    StructuralFoundation Re-design

    Pile Cap Re-Design


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