2941 Fairview Park Fairview Park. Eric Sobel. Pennsylvania State University Dept. of Architectural Engineering Spring 2003 Structural Option

Transcription

1 Pennsylvania State University Dept. of Architectural Engineering Spring 2003 Structural Option

2

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

4 BUILDING $38 Million 361,101 gross sq. ft 15 rentable stories Mechanical Penthouse Basement Offices Atrium Café Restaurant

5 SYSTEMS Mechanical: VAV System Chilled Water 65 Ton AC Units Electric Heating Coils Series fan VAV Units Electrical: Circuit Breaker Panelboards K-4 Rated Transformers

6 CURTAIN WALL E-W: METAL PANEL N-S: PRECAST CONCRETE

7 PLAN TYPICAL TOWER FLOOR PLAN

8 EXISTING STRUCTURE Gravity System: Composite A992 Steel 5 ¼ LW Conc. On Metal Deck Lateral System: N-S: 2 Braced Frames E-W: 5 Braced Frames & 5 Moment Frames Foundations: Typical Spread Foundations Buried Mat Foundation

9 PLAN FOURTH FLOOR PLAN

10 REDESIGN Goals: 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

11 OUTLINE Members: Building Core Gravity System Building Envelope Connections Construction: 4D CAD Schedule Estimate

12 PLAN TYPICAL TOWER FLOOR PLAN

13 HOLLOWCORE PLANKS 8 Hollowcore Planks Lightweight Concrete 6 straight ½ tendons f c = 5,000 psi

14 INVERTED TEES 20 x 30 Inverted Tees Normal Weight Concrete 4 x 10 Ledges Straight Tendons f c = 8,000 psi

15 COLUMNS Precast: 20 x 20 4 floor pieces f c ranging from 5,000-12,000 psi Upper Floors: Lightweight Corbels

16 SPANDREL Construction Reduced Members Bearing Connection Composition 3 Concrete (2) 1 ½ Insulation Metal Facing

17 WINDOWS Waussau Window System Installation Inside Simple

18 FOUNDATIONS Goals: Adequate Strength Cost Effective Rigid Support for Shearwalls Pinned Support for Columns

19 CONNECTIONS Importance: Define Structural Response Influences Construction Schedule Goals: High Repetition Relieve Induced Stresses Easy Erection Simple Formwork

20 BEAM - COLUMN Goals: Diaphragm Action Induced Stresses Quick Erection Columns Stability Description: Mastecord Bearing Pads Supporting Angle Analysis: PCI Design Guide PCHELP

21 PRECAST - SITECAST Goals: Transfer Gravity & Lateral Forces Simple Formwork Description: JVI-Inc. BSF 200/40 The Invisible Corbel Box cast in beam Knife cast in column Weld Plate Analysis: JVI Design Aids

22 CONSTRUCTION DAY 1

23 CONSTRUCTION DAY 1 DAY 2

24 CONSTRUCTION DAY 1 DAY 2 DAY 3

25 CONSTRUCTION DAY 1 DAY 2 DAY 3 DAY 4

26 CONSTRUCTION DAY 1 DAY 2 DAY 3 DAY 4 DAY 5

27 CONSTRUCTION

28 SCHEDULE COMPOSITE STEEL PRECAST

29 ESTIMATE Composite Steel: Precast: $5.95 million $6.07 million $ Million Site Cast Flooring Columns Foundations Steel Precast

30 CONCLUSIONS Drift: 30% Stiffer Initial Cost: Similar Construction Schedule: 4 Weeks Quicker Rentable Area: 650 Additional sq. ft. Plenum Depth: Varies Acoustics: 10 db STL & INR

31 THANKS Thanks to: Joe Ajello, PE Jimmy Lakey, PE All others at Cagley & Associates Mark Tayor Mike Patton Clement Enyeji Prof s: Parffit, Geschwindner, Boothby, & Burnette All other AE Faculty AE Class of 2003 Karen My Family

32 Questions? Members Connections Construction Trades Affected

33 SHEARWALLS East-West: (4) 22-8 Shearwall 24 Thick North-South: (2) Shearwall / Moment Frame Lines 20 Thick Deep Beams General: Locations matched existing braced frame locations Loadbearing => R=4.0

34 MOMENT FRAME Location: Along grid Line H Lower Portion Goals: Increase stiffness to region Free up Space Description: Site cast Spans parallel to plank

35 EXPANSION JOINT Goals: Transfer gravity loads Transfer E-W lateral loads Separate N-S lateral loads Description: Slotted Connector Teflon bearing pad

36 GROUTED KEYS Goals: Member Connectivity Diaphragm Action Description: Grouted Keys

37 PLANK INVERTED TEE Goals: Diaphragm Action Induced Stresses Quick Erection Description: Mastecord Bearing Pads Supporting Angle Analysis: PCI Design Guide

38 DAPPED BEAM Goals: Transfer Gravity & Lateral Forces Simple Connection Description: Mastecord Bearing Pad Analysis: PCI Design Method PCHELP

39 DAPPED BEAM

40 COLUMN SPLICE Goals: Aesthetically pleasing Transfer only axial and shear loads Simple erection Description: Bolted connection Grouted Splice occurs just above floor level Analysis: PCI design aids

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

42 SCHEDULE General: 20 columns / day 20 beams / day 40 planks / day Core: 1 level / week Windows: 1 level / week Core: 2 weeks ahead Windows: 2 weeks behind

43 DETAIL BUILDING END DETAIL

44 CRANES

45 TRANSPORTATION

46 TRADES AFFECTED

47 TRADES AFFECTED