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2001 Winter Presentation

2001 Winter Presentation. Site Location. Site View. Site History. 1923. Boston Improved Sewage. 1972. 1968. Site Constraints. Peninsula, surrounded by water Area of in-filled land Winter snow. Engineering Constraints. Soil Properties Compactable Soil 4000 psf bearing capacity

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2001 Winter Presentation

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  1. 2001 Winter Presentation

  2. Site Location

  3. Site View

  4. Site History 1923 Boston Improved Sewage 1972 1968

  5. Site Constraints • Peninsula, surrounded by water • Area of in-filled land • Winter snow

  6. Engineering Constraints • Soil Properties • Compactable Soil • 4000 psf bearing capacity • Capacity, silt/clay and sand mixture • 20’ water table • Loading • Live Load 50 psf • Dead Load 70 psf • Wind Load 35 psf • Roof Load 28 psf

  7. Budget Information

  8. Architect’s Vision “With a clear understanding of the historical influences of site, the land, the harbor, the history of Boston…” air light water sewage A Machine Of Flow movement

  9. Architectural Design 1 (Redesign) • Keep the integrity of the DOME • Allow open center to remain • Evaluate programmatic functionality • Relocate sloped floor rooms to basement level for ease of constructability of slabs

  10. Architectural Design 1 (Redesign)

  11. Composite steel design Regular column grid Easy installation Steel moment frame Engineering Design 1 Steel (Redesign) Typical Beam: W14X26 c=1” Moment Frame: W16X36

  12. Total = $3,145,000 Design 1 Steel Estimate (Redesign)

  13. Engineering Design 1 Precast (Redesign) • 12” masonry wall • 24” deep precast concrete girders

  14. Total = $3,231,000 Design 1 Precast Estimate (Redesign)

  15. Finish Dates: Steel - 09/28/16, Precast - 10/05/16 Durations: Steel – 8 mo & 4 wks, Precast – 9 mo Design 1 Schedules Precast Steel

  16. Architectural Design 2 • Concepts • Flow like the waves of the bay • Structure like the hull of a boat • Gesture towards the historic influence of the site • Open walls towards the oak trees • Individuality between faculty and students

  17. Architectural Design 2 Auditorium Classrooms, seminar rooms, labs Student offices Faculty offices, facilities, administration

  18. Engineering Design 2 Steel • Gravity System • Composite steel design • No truss for auditorium Typical Beam W14X30 Typ Girder W24X55 Typ Col W12X40 Auditorium beam w24X76

  19. Engineering Design 2 Steel • Steel bracing • Tube 3X3X1/4 • Foundation layout • Strip & spread footings

  20. Total = $2,722,000 Design 2 Steel Estimate

  21. Engineering Design 2 Precast Concrete gravity system • Load bearing wall, 2-way slab • 48’ post-tensioned girders

  22. Engineering Design 2 Precast • 12” masonry walls • Load path • Foundation layout • 3’ wide strip footing

  23. Total = $2,800,000 Design 2 Precast Estimate

  24. Finish Dates: Steel - 09/14/16, Precast - 09/21/16 Duration: Steel – 8 mo & 2 wks, Precast – 8 mo & 3 wks Design 2 Schedules Precast Steel

  25. Architectural Design 3 • Concepts • Box in a box • Simple, double structure • Advantageous use of sloped classroom and auditorium floors • Flow of light to below grade level • Exterior wood structure to gesture towards trees

  26. Architectural Design 3 Auditorium Classrooms, seminar rooms, labs Student offices Faculty offices, facilities, administration

  27. Architectural Design 3

  28. Engineering Design 3 Steel Inside Frame Plan Gravity System Steel Bracing Tube 3x3x1/4

  29. Engineering Design 3 Steel Outside Frame Plan Flat Roof Steel Knee Brace Frame

  30. Total = $3,083,000 Design 3 Steel Estimate

  31. Engineering Design 3 Wood Inside Frame Plan Wood Wall Lateral System Gravity System

  32. Engineering Design 3 Wood Outside Frame Plan Pre-fabricated wood truss with knee brace Prefab wood truss 2"X6" Column 12"DIA Knee brace 2"X6" Joist 2"X4" Steel Brace 12"X2"

  33. Engineering Design 3 Wood Outside Structure Load Path Gravity Load Lateral Load

  34. Engineering Typical Connection Wood With Steel Plate & Bolts Steel Bracing

  35. Total = $2,978,000 Design 3 Wood Estimate

  36. Finish Dates: Steel - 08/24/16, Wood - 09/07/16 Durations: Steel – 7 mo & 3 wks, Wood – 8 mo & 1 wk Design 3 Schedules Wood Steel

  37. Equipment Selection Truck Crane Mini Excavator Skid Steer Loader

  38. Budget Comparison

  39. Design Evaluations

  40. Decision Matrix Explanation of design rankings: 1=Best…6=Worst Lowest point total wins

  41. Design Choice • Design 3 • Best combination of strengths vs. weaknesses were 3W & 3S from matrix • Wood/Steel Hybrid • Combine the attractiveness/interest of 3W with the cost and schedule benefits of 3S • Keep wood exterior structure of 3W, but incorporate the steel interior structure of 3S

  42. Team Dynamics/Interaction

  43. Team Dynamics/Interaction “The most challenging and the most successful part of this whole process is the perpetual learning of our own and each others discipline and how we must collaborate in order to succeed.” “The structural system is not the only aspect of the building. We need to think about the others' intentions and constraints. Compromising between different intentions is very important in developing a successful project.” “The greatest thing we will take away from this class is learning how to successfully work in a challenging situation with diverse people on a project with little contact.”

  44. Lessons Learned • Cross-Discipline Knowledge • Vocabulary • Interests/Concerns • Teamwork • Tolerance • Dependence/Collaboration • Organization/Work Habits • Technology • New Applications

  45. 2001 Winter Presentation Questions?

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