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Lake Team 2001

Lake Team 2001. A rchitect: Robert Williamson, U.C. Berkeley E ngineers: Dominik Weiss, FHA, Switzerland Markus Mathys, FHA, Switzerland C onstruction Manager: Ravi Raghu, Stanford Owner: Peter Demian. Winter Quarter Presentation

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Lake Team 2001

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  1. Lake Team 2001 Architect: Robert Williamson, U.C. Berkeley Engineers: Dominik Weiss, FHA, Switzerland Markus Mathys, FHA, Switzerland Construction Manager: Ravi Raghu, Stanford Owner: Peter Demian Winter Quarter Presentation March 16, 2001

  2. Site Context • Situated on Lake Geneva, Switzerland • Surrounded by the Alps • Nearly flat site

  3. Site Location • 10, 108 sq. ft. footprint • Clear view to the lake • Easily accessible by two roads

  4. Climate • 20°C mean temperature in summer • Annual snow fall – 30in • 3 months of continuous snowing (incentive to enclose the site before snowfall begins)

  5. Humus Good gravel Lake Geneva Water plate Soil Conditions • Soil conditions – excellent gravel • Easy to excavate • Safety regulations: 1:1 or 1:2 sloping allowed. Beyond that use sheet piles

  6. Equipment • Based on capacity and requirement • After analysis of different available equipments (Capacity 1.54m3) • Backhoe • Crane • Dump trucks • Concrete pump

  7. Equipment Mobile Crane – Boom 54m

  8. Site Plan • Bonus double access roads • Can divert traffic if needed and use the other side of the road • Mobile crane

  9. A New Design #1 Concept Development • Respond to the site • Create an icon for the University Surrounding mountains inspired the idea of protruding elements at various angles.

  10. A 1st Iteration Entrance Circulation Small Classrooms Auditorium Large Classrooms Lab Seminar Room Initial 1st floor plan

  11. A 2nd Iteration • Provides more assignable floor area for required spaces • Based on simpler structural system • Circulation is clearer • Less expensive Auditorium Large Classrooms Small Classrooms Seminar Rooms Storage Circulation

  12. Plans and Sections A 2nd Floor 3rd Floor 1st Floor Labs/Computer Room Small Classrooms Seminar Rooms Student Offices Faculty Offices Faculty Lounge Auditorium Large Classrooms Small Classrooms Seminar Rooms Storage

  13. E Mountain Concept general considerations • Auditorium • with firm seating 4kN/m2 • Other areas 5kN/m2 • Other areas • General 3kN/m2 • Balcony, stairs 4kN/m2 • Snow • On the flat roof 0.9kN/m2 • Wind • Max. wind load 1.4kN/m2

  14. E Mountain Concept 1st alternative: steel-concrete-composite 5.10m 6.70m 4.28m • Columns are made of structural steel • Ceilings are composite steel and concrete • Stabilization through an elevator core and two moment resisting frames in the facade. • Strip foundation 7.55m 8.23m 6.38m 14.0m Main girder Secondary girder 23.16m

  15. E Mountain Concept 1st alternative: steel-concrete-composite 5.10m 6.70m 4.28m • The red line are moment resisting frames • Are dimensioned for the blue loads • All other steel members are connected to the concrete 7.55m 8.23m 6.38m 14.0m Main girder Secondary girder 23.16m

  16. E Mountain Concept 1st alternative: steel-concrete-composite • Large steel members with smaller secondary girders • No extra columns in the auditorium Large Classrooms Steel member 4.65m 5.93m Auditorium 11.84m 4.45m

  17. E Mountain Concept 1st alternative: steel-concrete-composite • High construction height. The secondary girder on top of the main girder • The secondary girder between a main girder. Small construction height. 150mm 150mm Concrete flooring h=150mm 360mm Metal sheet 360mm Secondary girder h=360mm Main girder h=450mm 450mm 450mm

  18. E Mountain Concept 1st alternative: steel-concrete-composite • Connection between a main girder and two columns • Connection between a main girder and two secondary girder Concrete flooring h=150mm Screw (shear) column H=140mm Metal sheet Flat bar Secondary girder h=360mm Main girder Tongue with two screws Flat bar Main girder h=450mm Screw (shear) column H=140mm

  19. E Mountain Concept foundation alternative: • Plate foundation • Strip Foundation • The bed plate will be the foundation. If necessary there will be different heights of the plate. • Strip/spread foundation. Between the foundation a swimming bed plate columns columns Swimming bed plate 0.5m 0.5m 0.5m 0.5m 2.0m 2.0m Bed plate with different heights

  20. C Mountain Concept Alternative 1

  21. C Mountain Concept Alternative 1

  22. C Mountain Concept Alternative 1 Total cost of the design alternative $5.28M

  23. C Mountain Concept Alternative 1 January1, 2015 June 15, 2015

  24. C Mountain Concept Alternative 1 • End construction – June 15th • Resource allocation considered in the schedule • Steel construction aids the fast completion • Can create a closure early to prevent weather delays • Lead time for procurement high

  25. E Mountain Concept 2nd alternative: concrete 5.10m 6.70m 4.28m • columns and plates made out of concrete • One elevation core and two shear walls to stabilize the building • The ceiling is jointed with the walls in the auditorium • Foundation plate 7.55m 8.23m 6.38m 14.0m 23.16m

  26. E Mountain Concept 2nd alternative: concrete 5.10m 6.70m 4.28m • As an example the load path for wind load • Clamped shear walls to guide the loads to the foundation 7.55m 8.23m 6.38m qWind 14.0m 23.16m

  27. E Mountain Concept 2nd alternative: concrete • Using the walls in the classrooms to support the ceiling of the auditorium • Just one column in the whole auditorium • Classroom walls made of concrete Large Classrooms Arched vault column 4.65m 5.93m Terrain Auditorium 11.84m 4.45m

  28. E Mountain Concept - Solution2nd alternative: concrete • Connection from a column to the ceiling • Connection from the wall to the ceiling of the auditorium 30cm column Reinforcement 30cm Reinforcement Wall classroom 35cm Ceiling 2nd floor 35cm column Ceiling auditorium

  29. C Mountain Concept Alternative 2 • Concrete framing system cheaper than the steel one • Trade off in time • Total cost of concrete alternative – 4.91m • Timeline – Jan 1st to Jul 13th

  30. C Mountain Concept Alternative 2 • Total framing cost of $612382 as opposed to $762109 for the steel framing

  31. A New Design #2 Concept Development • Central atrium can divide the building into a private sector and a public sector • All vertical movement can be contained within the circular atrium • Atrium creates a central gathering space

  32. 1st Iteration A E Auditorium Large Classrooms Small Classrooms Seminar Rooms Labs/Computer Room Student Offices Faculty Offices Storage

  33. 2nd Iteration A E • 2 cores will contribute to a better structural solution and result in a lower cost

  34. Atrium ConceptConstruction E Iteration: 1st alternative: 2nd alternative: steel-concrete- composite masonry-concrete

  35. Atrium Concept 1st alternative: steel-concrete-composite E 1st/2nd/3rd floor: • steel columns  vertical forces • moment resisting frames and diagonals  lateral and vertical forces

  36. Atrium Concept1st alternative: steel-concrete-composite E Slab: • main beams • built-up girders • concrete slab view spans: 6-8m spans: 7-11.6m section

  37. Atrium Concept1st alternative: steel-concrete-composite E View at shearwall: see detail Section through Auditorium:

  38. Atrium Concept1st alternative: steel-concrete-composite E • screw connections • no shear studs (partial composite action) • single span built-up girders

  39. Atrium Concept Alternative 1 C • Total framing cost of $786720 for the steel framing • Simpler exterior glazing • Total project cost – $5.4m • Timeline – Jan 1st to June 28th

  40. Atrium Concept Alternative 1 C • Constructibility issues • Partially Composite design recommended • 100% composite action not easy to construct • Connections in MRF not as critical because of no seismic effect

  41. Atrium Concept 2nd alternative: masonry-concrete E View to lake 1st Floor: • reinforced masonry • concrete slab and columns • main beams aboveauditorium atrium main beams

  42. Atrium Concept2nd alternative: masonry-concrete E 2nd / 3rd floor: • masonry • concrete slab and columns section

  43. Atrium Concept2nd alternative: masonry-concrete E Longitudinal section of auditorium: Detail of slab and main beam:

  44. Atrium Concept2nd alternative: masonry-concrete E Cross-section of slab and main beam above auditorium:

  45. Atrium Concept Details E Foundation below auditorium and large classrooms: General foundation:

  46. Atrium ConceptDetails E Glass dome above atrium:

  47. Atrium Concept Alternative 2 C • Total framing cost of $597589 as opposed to $786720 for the steel framing • Total project cost – 4.97m • Timeline – Jan 1st to august 12th

  48. Materials Choices C • Options considered for concrete – Precast vs. Cast in place • Precast economically infeasible

  49. Steel Vs Concrete Sequencing Issues Sequencing Issues C Erection Excavation

  50. New Designs at a glance C Cost Breakdown

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