2941 Fairview Park Eric Sobel - Penn State Engineering Files... · SPANDREL 2941 Fairview Park Eric...

Pennsylvania State UniversityDept. of Architectural Engineering

Spring 2003Structural Option

Eric Sobel

2941 Fairview Park

2941 Fairview ParkEric Sobel

PROJECT TEAM2941 Fairview Park

Eric Sobel

• Owner: 2941 Fairview L.L.P.• Developer: The David Orr Company• Contractor: Clark Construction• Architect: Boggs & Partners• Structural: Cagley & Associates• M.E.P.: Allen & Shariff• Envelope: PCC Consultants

BUILDING2941 Fairview Park

Eric Sobel

• $38 Million• 361,101 gross sq. ft• 15 rentable stories• Mechanical Penthouse• Basement

• Offices• Atrium• Café• Restaurant

• VAV System• Chilled Water• 65 Ton AC Units• Electric Heating Coils• Series fan VAV Units

SYSTEMS2941 Fairview Park

Eric Sobel

• Circuit Breaker Panelboards• K-4 Rated Transformers

• Electrical:

• Mechanical:

CURTAIN WALL2941 Fairview Park

Eric Sobel

• METAL PANEL

• PRECAST CONCRETE

• E-W:

• N-S:

PLAN2941 Fairview Park

Eric Sobel

TYPICAL TOWER FLOOR PLAN

• Composite A992 Steel• 5 ¼” LW Conc. On Metal Deck

• N-S: 2 Braced Frames• E-W: 5 Braced Frames & 5 Moment Frames

• Typical Spread Foundations• Buried Mat Foundation

EXISTING STRUCTURE2941 Fairview Park

Eric Sobel

• Gravity System:

• Lateral System:

• Foundations:


Eric Sobel

FOURTH FLOOR PLAN

• Goals:

REDESIGN2941 Fairview Park

Eric Sobel

• Increase Serviceability• Decrease Initial Cost• Decrease Construction Time• Minimal Architectural Change

• Advantages:• Quality Control• Durability• Material Strength• Architectural Finish• Quicker Erection

• Disadvantages:• Increased Weight• Transportation

OUTLINE

• Connections


• Building Core• Gravity System• Building Envelope

• 4D CAD• Schedule• Estimate

• Members:

• Construction:


Eric Sobel

TYPICAL TOWER FLOOR PLAN

• 8” Hollowcore Planks• Lightweight Concrete• 6 straight ½” tendons • f’c = 5,000 psi

HOLLOWCORE PLANKS2941 Fairview Park

Eric Sobel

• 20” x 30” Inverted Tees• Normal Weight Concrete• 4” x 10” Ledges• Straight Tendons• f’c = 8,000 psi

INVERTED TEES2941 Fairview Park

Eric Sobel

COLUMNS2941 Fairview Park

Eric Sobel

• 20” x 20”• 4 floor pieces• f’c ranging from 5,000-12,000 psi• Upper Floors: Lightweight • Corbels

• Precast:

SPANDREL2941 Fairview Park

Eric Sobel

• Composition• 3” Concrete• (2) 1 ½” Insulation• Metal Facing

• Reduced Members• Bearing Connection

• Construction

WINDOWS2941 Fairview Park

Eric Sobel

• Installation• Inside• Simple

• Waussau Window System

• Goals:

FOUNDATIONS2941 Fairview Park

Eric Sobel

• Adequate Strength• Cost Effective• Rigid Support for Shearwalls• Pinned Support for Columns

• Importance:

• Goals:

CONNECTIONS2941 Fairview Park

Eric Sobel

• Define Structural Response• Influences Construction Schedule

• High Repetition• Relieve Induced Stresses• Easy Erection• Simple Formwork

BEAM - COLUMN2941 Fairview Park

Eric Sobel

• Goals:

• Description:

• Analysis:

• Diaphragm Action• Induced Stresses• Quick Erection• Columns Stability

• Mastecord Bearing Pads• Supporting Angle

• PCI Design Guide• PCHELP

• Goals:

• Description:

• Analysis:

PRECAST - SITECAST2941 Fairview Park

Eric Sobel

• Transfer Gravity & Lateral Forces• Simple Formwork

• JVI-Inc. BSF 200/40• “The Invisible Corbel”• Box cast in beam• “Knife” cast in column• Weld Plate

• JVI Design Aids

CONSTRUCTION2941 Fairview Park

Eric Sobel

DAY 1


Eric Sobel

DAY 1

DAY 2

DAY 1

DAY 2

DAY 3


Eric Sobel

DAY 1

DAY 2

DAY 3

DAY 4


Eric Sobel


Eric Sobel

DAY 1

DAY 2

DAY 3

DAY 4

DAY 5


Eric Sobel

SCHEDULE2941 Fairview Park

Eric Sobel

PRECAST

COMPOSITE STEEL

• Composite Steel: $5.95 million• Precast: $6.07 million

ESTIMATE2941 Fairview Park

Eric Sobel

Steel Precast

Site Cast

Flooring

Columns

Foundations

$ M

illio

n

• Rentable Area: 650 Additional sq. ft.

CONCLUSIONS2941 Fairview Park

Eric Sobel

• Plenum Depth: Varies

• Initial Cost: Similar

• Construction Schedule: 4 Weeks Quicker

• Drift: 30% Stiffer

• Acoustics: 10 dB STL & INR

Thanks to:

THANKS2941 Fairview Park

Eric Sobel

Joe Ajello, PEJimmy Lakey, PEAll others at Cagley & AssociatesMark TayorMike PattonClement EnyejiProf’s: Parffit, Geschwindner, Boothby, & BurnetteAll other AE FacultyAE Class of 2003KarenMy Family

Questions?


• Members

• Connections

• Construction

• Trades Affected

• East-West:

• North-South:

• General:

SHEARWALLS2941 Fairview Park

Eric Sobel

• (4) 22’-8” Shearwall• 24” Thick

• (2) Shearwall / Moment Frame Lines• 20” Thick• Deep Beams

• Locations matched existing braced frame locations• Loadbearing => R=4.0

• Location:

• Goals:

• Description:

MOMENT FRAME2941 Fairview Park

Eric Sobel

• Along grid Line H• Lower Portion

• Increase stiffness to region• Free up Space

• Site cast• Spans parallel to plank

EXPANSION JOINT2941 Fairview Park

Eric Sobel

• Goals:

• Description:

• Transfer gravity loads• Transfer E-W lateral loads• Separate N-S lateral loads

• Slotted Connector• Teflon bearing pad

GROUTED KEYS2941 Fairview Park

Eric Sobel

• Goals:

• Description:

• Member Connectivity• Diaphragm Action

•Grouted Keys

• Goals:

• Description:

• Analysis:

PLANK – INVERTED TEE2941 Fairview Park

Eric Sobel

• Diaphragm Action• Induced Stresses• Quick Erection

• Mastecord Bearing Pads• Supporting Angle

• PCI Design Guide

• Goals:

• Description:

• Analysis:

DAPPED BEAM2941 Fairview Park

Eric Sobel

• Transfer Gravity & Lateral Forces• Simple Connection

• Mastecord Bearing Pad

• PCI Design Method• PCHELP

DAPPED BEAM2941 Fairview Park

Eric Sobel

Goals:

Description:

Analysis:

COLUMN SPLICE2941 Fairview Park

Eric Sobel

• Aesthetically pleasing• Transfer only axial and shear loads• Simple erection

• Bolted connection• Grouted• Splice occurs just above floor level

• PCI design aids

• Architectural Atrium• Entrance Plaza• ME/TC rooms per floor• Tenant Build-Out• Superb Landscaping

FEATURES2941 Fairview Park

Eric Sobel

• General:

• Core:

• Windows:

SCHEDULE2941 Fairview Park

Eric Sobel

•20 columns / day•20 beams / day•40 planks / day•Core: 1 level / week•Windows: 1 level / week

•2 weeks ahead

•2 weeks behind

DETAIL2941 Fairview Park

Eric Sobel

BUILDING END DETAIL

CRANES2941 Fairview Park

Eric Sobel

TRANSPORTATION2941 Fairview Park

Eric Sobel

TRADES AFFECTED2941 Fairview Park

Eric Sobel

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