1 / 44

Koshland Integrated Natural Science Center

This thesis explores the structural design of the Koshland Integrated Natural Science Center, including an investigation of alternate systems for cost efficiency, construction schedule, and load reduction while maintaining the existing floor layout and architecture.

jeniferc
Download Presentation

Koshland Integrated Natural Science Center

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Koshland Integrated Natural Science Center Haverford College Haverford, Pennsylvania Christopher J. Shelow Structural Option Senior Thesis Spring ‘06

  2. Koshland Integrated Natural Science Center • Introduction & Building Background • Design Professionals • Existing Conditions • Proposal • Structural Study • Construction Management Study • Conclusions Thesis Presentation Outline

  3. Koshland Integrated Natural Science Center • Located on the Haverford College campus • 4-story laboratory facility w/basement • Also contains classrooms, offices, & communal spaces • 185,423 ft2 • Directly connected to existing Hilles & Sharpless Halls • Total project cost of $42.6 Million Introduction & Building Background

  4. Koshland Integrated Natural Science Center • Constructed in multiple phases • Completed in 2003 • State-of-the-art laboratories • Undergraduate & graduate research facility • Houses seven natural science departments Introduction & Building Background

  5. Koshland Integrated Natural Science Center • Introduction & Building Background • Design Professionals • Existing Conditions • Proposal • Structural Study • Construction Management Study • Conclusions Thesis Presentation Outline

  6. Koshland Integrated Natural Science Center • Owner – Haverford College (Physical Plant) • Haverford, PA • Architect – Ayers/Saint/Gross (ASG) Architects & Planners • Baltimore, MD • Engineer – CUH2A • Princeton, NJ • General Contractor/CM – Skanska USA Building, Inc. • Blue Bell, PA • Laboratory Planner – Earl Walls Associates • San Diego, CA Design Professionals

  7. Koshland Integrated Natural Science Center • Introduction & Building Background • Design Professionals • Existing Conditions • Proposal • Structural Study • Construction Management Study • Conclusions Thesis Presentation Outline

  8. Koshland Integrated Natural Science Center • Superstructure – Precast concrete framing • Foundation – CMU foundation/retaining walls, precast piers • Floor System – 10” precast plank w/ 2” topping • Façade – Stone & precast panels • Roof System – Steel framing w/ metal deck; precast plank Existing Conditions - Overview

  9. 10” 2” Topping Slab Koshland Integrated Natural Science Center • 10” precast concrete hollow core plank by Strescon • 2” cast-in-place concrete topping slab • Prestressed steel reinforcing tendons • Typical span of 31’-6” Existing Conditions – Floor System

  10. Koshland Integrated Natural Science Center • Typical bay: 31’-6” X 21’-0” • Precast beams : 24”x12” spanning 21’-0” • Precast columns : 16”x16” & 20”x20” • Typical story height of 13’ Existing Conditions – Floor Framing

  11. Koshland Integrated Natural Science Center • Separated by expansion joints into three independent structures • East Wing • West Wing • Link Existing Conditions – Expansion Joints

  12. Koshland Integrated Natural Science Center WEST WING LINK Existing Conditions – Typical Floor Plan EAST WING Expansion Jts. -

  13. 21’ 31’-5” 31’-5” 13’-8” Koshland Integrated Natural Science Center Typ. P.C. Column Typ. P.C. Beam EAST WING Existing Conditions – East Wing Plan Typ. P.C. Shear Wall

  14. Koshland Integrated Natural Science Center WEST WING Typ. P.C. Column Typ. P.C. Beam Existing Conditions – West Wing Plan 21’ Typ. P.C. Shear Wall 31’-6” 31’-6” 13’-8”

  15. Koshland Integrated Natural Science Center LINK Typ. CMU Shear Wall Typ. CMU Brg. Wall Existing Conditions – Link Plan 25’-11” 23’ 104’

  16. Koshland Integrated Natural Science Center • East & West Wings – typical steel bent frames; W-shapes • Link – precast plank w/ topping slab Existing Conditions – Roof System

  17. WEST WING LINK EAST WING Koshland Integrated Natural Science Center • East & West Wings – 8” precast concrete shear walls • Link – 10” CMU shear wall Existing Conditions – Lateral System

  18. Koshland Integrated Natural Science Center • Introduction & Building Background • Design Professionals • Existing Conditions • Proposal • Structural Study • Construction Management Study • Conclusions Thesis Presentation Outline

  19. Koshland Integrated Natural Science Center • Investigate an alternate system that could prove to be a more efficient system based on certain criteria • Investigation Criteria: • Cost of structural system • Construction schedule duration • Reduce loads – gravity & seismic • Maintain existing floor layout & architecture Proposal – Problem Statement

  20. Koshland Integrated Natural Science Center • Gravity system designs: • Composite slab on deck floor system • Structural steel floor framing – beams, girders, & columns • Maintain typical bay size & story height • Lateral system designs: • Reduced seismic loads • Concentric steel braced frame system • Check drift limitations • Construction Management comparisons: • Structural system cost • Construction schedule of structural system Proposal – Solution Process

  21. Koshland Integrated Natural Science Center • Additional design considerations: • All expansion joints will remain • Existing foundation remains; lighter overall building weight • Existing roof systems for East & West Wings remain; coincides steel framed system • Central stair case design to remain, preserving innovative design of spiraled cantilevered stairs Proposal

  22. Koshland Integrated Natural Science Center • Introduction & Building Background • Design Professionals • Existing Conditions • Proposal • Structural Study • Construction Management Study • Conclusions Thesis Presentation Outline

  23. Koshland Integrated Natural Science Center • 2003 International Building Code (IBC) • AISC Load and Resistance Factor Design (LRFD), 3rd Edition • ASCE 7-02 Minimum Design Loads for Buildings and Other Structures Structural Study – Design Codes

  24. Koshland Integrated Natural Science Center • Recalculation of gravity loads • Create building model in RAM • Perform RAM design of gravity members • Recalculation of lateral loads • Create several models of steel braced frames in STAAD Pro. • Check drift limitations • Calculate approximate cost of both structural systems & compare • Create construction schedules for systems & compare Structural Study – Procedure

  25. Koshland Integrated Natural Science Center • Slab: • 4” normal weight concrete, C.I.P. • Deck: • 1.5SB Normal Wt. Composite Metal Deck – Wheeling Catalog • 1 ½” depth; 20 gage • Span – 7’-0” Structural Study – Slab Design

  26. Koshland Integrated Natural Science Center Structural Study – Gravity Loads

  27. Koshland Integrated Natural Science Center • Typical beam size for typical bay: W10X12 • Typical girder size for typical bay: W21X44 • Typical column sizes: W10X33 & W10X39 Structural Study – RAM Design – East Wing

  28. Koshland Integrated Natural Science Center • Typical beam size for typical bay: W8X10, W10X12 • Typical girder size for typical bay: W18X40 • Typical column sizes: W10X33 & W10X39 Structural Study – RAM Design – West Wing

  29. Koshland Integrated Natural Science Center • Typical beam size for typical bay: W10X12 • Typical girder size for typical bay: W18X40 • Typical column size: W10X33 Structural Study – RAM Design – Link

  30. Koshland Integrated Natural Science Center • Despite a lighter system, seismic still controlled • Reduced shear on the building: Structural Study – Lateral Loads

  31. 14 15 11 6 9 5 8 2 7 10 13 12 1 4 3 Koshland Integrated Natural Science Center Structural Study – Braced Frames Layout N

  32. Koshland Integrated Natural Science Center • Torsional components calculated for each frame • In most, torsional forces negligible but still included • Columns may be biaxially loaded; accounted for in STAAD design • Strong and weak axis bending in braced frame columns Structural Study – Lateral System

  33. Koshland Integrated Natural Science Center • Frames design - concentric K-braces or X-braces • Drift limitations - L/600 • E-W direction: typ. K-braced frames • N-S direction: typ. X-braced frames Structural Study – Lateral System

  34. Koshland Integrated Natural Science Center • L/600 = 1.04” • Typ. column • W12X40 • Typ. girder • W21X44 • Typ. brace • W12X40 = 0.908” Structural Study – Typical K-braced Frame

  35. = 0.982” Koshland Integrated Natural Science Center • L/600 = 1.04” • Typ. column • W12X40 • Typ. beam • W12X14 • Typ. brace • W10X49 Structural Study – Typical X-braced Frame

  36. East Wing West Wing Link Koshland Integrated Natural Science Center Structural Study – 3D Models of Each Wing

  37. Koshland Integrated Natural Science Center • Introduction & Building Background • Design Professionals • Existing Conditions • Proposal • Structural Study • Construction Management Study • Conclusions Thesis Presentation Outline

  38. Koshland Integrated Natural Science Center • Cost breakdown of both structural systems • System cost comparison • Task duration estimates for both systems • Construction schedule comparison C. M. Study - Procedure

  39. Koshland Integrated Natural Science Center Precast Concrete System Structural Steel System VS. C. M. Study – Cost Comparison Summary Proposed Steel system saves approx. 14% of total structural cost

  40. Koshland Integrated Natural Science Center • Existing Precast Concrete System • Duration: 21 weeks • Proposed Steel System • Duration: 27 weeks • Existing precast system saves 6 weeks of construction time C. M. Study – Schedule Comparison

  41. Koshland Integrated Natural Science Center • Introduction & Building Background • Design Professionals • Existing Conditions • Proposal • Structural Study • Construction Management Study • Conclusions Thesis Presentation Outline

  42. Koshland Integrated Natural Science Center • Proposed steel system to save 14% structural cost • Precast system cuts erection time by 6 weeks • Material availability – systems similar • Floor layout & architecture remained unchanged • Findings: • Both systems viable options • 14% savings outweighs 6 wk. prolonged schedule • Proposed steel system is slightly more efficient Conclusions

  43. Koshland Integrated Natural Science Center • John Diaz & Ron Tola – Haverford College • Sam Rozycki – CUH2A • Valerie Gillespie – Gillespie Engineering • AE Department Faculty & Staff • Professor Parfitt – Thesis Advisor • Chris Glinski, Dave Melfi, Justin Mulhollan, and many other 5th year AE students • Family & Friends • Thank you Acknowledgements

  44. Koshland Integrated Natural Science Center Questions

More Related