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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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Alcoa business services center

AlcoaBusiness Services Center

Pittsburgh, Pennsylvania

Efficiency Considerations for Modern Design

Geoffrey E. Measel – Structural Option2004 Senior Thesis


Introduction thesis research

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


Introduction presentation outline

IntroductionPresentation Outline

  • Introduction

  • Structural Depth

    • Alternate Floors

    • Alternate Foundation

    • Building Impacts

  • Mechanical Breadth

    • Under Floor Redesign

  • Construction Management

  • Conclusions

  • Questions


Introduction project players

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


Alcoa business services center

IntroductionLocation


Introduction building statistics

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


  • Structural existing steel framing

    StructuralEXISTING STEEL FRAMING


    Structural existing core framing

    Structuralexisting core framing


    Presentation outline

    Presentation Outline

    • Introduction

    • Structural Depth

      • Alternate Floors

      • Alternate Foundation

      • Building Impacts

    • Mechanical Breadth

      • Under Floor Redesign

    • Construction Management

    • Conclusions

    • Questions


    Structural floor re design

    Structuralfloor re-design

    • Existing Composite

    • My Existing (Control for Study)

    • Percentage Composite

      • Shored

      • Unshored

      • Cambered

    • Non-Composite

    • Joists

    • Pre-Cast Concrete


    Structural floor re design1

    Structuralfloor re-design

    Floor Framing Comparison


    Structural foundation re design

    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


    Structural core re design

    StructuralCore Re-Design

    • Existing Core Framing

    • My Existing (Control for Study)

    • Raised Floor Framing

    • Beam Raised Floor

    • Raised Core Framing


    Structural core re design1

    StructuralCore Re-Design

    Existing Core Framing


    Structural core re design2

    StructuralCore Re-Design

    Raised Floor Core

    24” Raised Tate Access Floor


    Structural core re design3

    structuralCore Re-Design

    Beam Raised Floor

    W21X44 with Slab


    Structural core re design4

    StructuralCore Re-Design

    Raised Core Framing


    Structural core re design5

    StructuralCore Re-Design

    Raised Core Framing

    Option 1

    Option 2


    Structural core re design6

    StructuralCore Re-Design

    Core Framing Comparison


    Presentation outline1

    Presentation Outline

    • Introduction

    • Structural Depth

      • Alternate Floors

      • Alternate Foundation

      • Building Impacts

    • Mechanical Breadth

      • Under Floor Redesign

    • Construction Management

    • Conclusions

    • Questions


    Mechanical under floor

    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


    Mechanical duct work re design

    MechanicalDuct work Re-Design

    Existing Duct Plan

    Re-Designed Duct Plan


    Presentation outline2

    Presentation Outline

    • Introduction

    • Structural Depth

      • Alternate Floors

      • Alternate Foundation

      • Building Impacts

    • Mechanical Breadth

      • Under Floor Redesign

    • Construction Management

    • Conclusions

    • Questions


    Const mgmt cost summary

    Const. MgmtCost Summary

    Overall Floor Framing Cost Comparison


    Const mgmt cost summary1

    Const. Mgmtcost summary

    Overall Core Framing Cost Comparison


    Const mgmt cost summary2

    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 mgmt cost summary3

    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

    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

    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

    Questions

    ?


    Floor framing summary

    Floor Framing Summary


    Structural floor re design2

    Structuralfloor re-design

    Percentage Composite Comparison Unshored


    Structural floor re design3

    Structuralfloor re-design

    Percentage Composite Comparison Shored


    Structural floor re design4

    Structuralfloor re-design

    Existing Floor Comparison


    Structural core re design7

    StructuralCore Re-Design

    Steel Systems Comparison


    Structural foundation re design1

    StructuralFoundation Re-design

    Pile Cap Re-Design


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