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RIVER UNIVERSITY

RIVER UNIVERSITY. R I V E R 2 0 0 2. The Team. A rchitect Elena Paparizou Berkeley. E ngineer Paul Kulseth Kansas. C onstructor Wendy Wang Stanford. O wner Jonathan Wong. Thorton-Tomasetti Engineers. A. The Site. Location. A. The Site. Elements. A. The Site. Access. A.

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RIVER UNIVERSITY

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  1. RIVER UNIVERSITY

  2. R I V E R 2 0 0 2 The Team ArchitectElena PaparizouBerkeley Engineer Paul KulsethKansas Constructor Wendy WangStanford Owner Jonathan Wong Thorton-Tomasetti Engineers

  3. A The Site Location

  4. A The Site Elements

  5. A The Site Access

  6. A The Site Buildings

  7. A Alternatives Placement 1st Alternative N 2nd Alternative

  8. AEC Evaluation 1st Alternative Advantages A • Clear Spatial Organization • Minimal Circulation E • Structural Symmetry • Lateral Support Availability C • Symmetrical • Short Construction Time Disadvantages A • Floor Plan is crammed • Volume appears too massive E • Non-Orthogonal Connections • Non-regular column locations C • Expensive Structural System • Curved form

  9. AEC Evaluation 2nd Alternative Advantages A • Circulation as a path • Interaction between inside / outside E • Regular structural grid • Relatively short spans C • Rectangular form • Well-defined grid Disadvantages • Spatial requirements are not entirely fulfilled • Circulation has flaws A E • Structural Symmetry • Lateral Support Availability C • Longer reach for crane • Much longer construction time with concrete

  10. AEC Proposed Solution 1st Alternative • Design is solid but there is room for improvement in certain areas both in terms of spatial quality as well as in terms of construction requirements. • Symmetry facilitates the structural development but the shell-like auditorium represents a big challenge. • Curves are essential to the architectural concept as well as the choice of concrete and wood as façade materials. The question is how to keep the architect’s vision while staying in budget.

  11. A Design Concept 100 ft 100 ft

  12. A Design Concept

  13. A Design Concept

  14. A Design Concept

  15. A Design Concept

  16. A chair/ senior admin./ secretaries faculty offices student offices 3rd floor 2nd floor 1st floor Design Adjacencies & Privacy

  17. A chair/ senior admin./ secretaries faculty offices student offices Design Organization 3rd floor 2nd floor N 1st floor

  18. A Design Revisions N 2nd floor 1st floor

  19. A Design Orientation N

  20. A Design Access

  21. A Design Floor Plans 3rd floor N 2nd floor 1st floor

  22. A Design Floor Plans 3rd floor N 2nd floor 1st floor

  23. A Design Floor Plans 3rd floor N 2nd floor 1st floor

  24. A Design Floor Plans 3rd floor N 2nd floor 1st floor

  25. A Design Sections & Elevations South-West South

  26. A Design Elevations South-East North-West

  27. A Design 10:30 am Sun Paths May August November February

  28. A Design 7 am – 8 pm Sun Paths May

  29. A Design 7 am – 8 pm Sun Paths August

  30. A Design 7 am – 8 pm Sun Paths November

  31. A Design 7 am – 8 pm Sun Paths February

  32. A Design

  33. E Structure • System Details : • Steel Framing • Braced Frame Lateral System • Composite Slab ( 4” ) • Metal Floor Decking with a max span of 11 ½ feet to alleviate the need for shoring. • Design Considerations : • Symmetrical building, layout, and loading. • Lightweight and ease of construction.

  34. E Soil & Foundation Issues Source: Earth Sciences Library and Map Collection on Stanford Campus • Soil Survey for Yolo County : • Well Drained • Nearly Level • Silt Loams to Silty Clay Loams • On Alluvial Fans • Depth to bedrock is greater than 5 feet • The soil is not affected water table to a depth of 5 feet. Building Column Casing • 2-½’ dia. Drilled Shafts for column loads. • Grade Beams for wall loads. Foundation Proposal : Rebar Cage Rock Socket

  35. E Structure & Architecture 1st Floor 2nd Floor 3rd Floor

  36. E Loading Conditions Gravity • FLOOR DEAD LOAD = 85 psf • Lightweight Concrete Slab 40 psf (4" @ 120 pcf) • Estimated Weight of Structure 5 psf • Metal Decking and Flooring 3 psf • Interior Partitions 20 psf • MEP Overhead Systems 10 psf • Suspended Ceiling 2 psf • Cladding 5 psf FLOOR LIVE LOAD[ 1997 UBC, Table 16-A ] • Office 50 psf • Restrooms 50 psf • Storage ( light ) 125 psf • Classrooms 40 psf • Auditorium ( fixed seating ) 50 psf • Auditorium ( stage area ) 125 psf • Exit Facilities 100 psf ROOF DEAD LOAD Floor Dead Load -  Interior Partitions - Slab =  25 psf ROOF LIVE LOAD [ 1997 UBC, Table 16-C ] • Flat Roof = 20 psf ( < 33% slope )

  37. E Shape Designations 2nd Floor 3rd Floor • Column Sizing : • All columns are W10x33’s. • Size governed by connections. Roof

  38. E Lateral Analysis Total Building Weight : W = 1933 kips Base Shear : V = 311 kips Story Drift : 2nd Floor = 0.485 in. 3rd Floor = 0.981 in. Roof = 1.347 in. • SEISMIC [ 1997 UBC ] • Zone 3 [ Figure 16-2 ] • Soil Profile Type “SD” [ Table 16-J ] • Seismic Importance Factor (Ip) = 1.00 [ Table 16-K ]

  39. E Cantilever Support • Details : • Cantilever at Roof level is approximately 13’. 13’ Cantilever 19’ Adjacent Span 11’ Cantilever 12’ Story Height • Details : • Lower supported by a Dogleg Slab. • Upper Supported by a Vierendeel Truss System. 9’ Cantilever

  40. E Lower Cantilever Support • Details : • Dogleg slab acts as a counterweight to the cantilever. • Also supported by retaining walls. • Varying slab thickness. 10” 9’ Cantilever 6” 2 x Cantilever Length

  41. E Upper Cantilever Support • Details : • Vierendeel Truss system. • Tension forces at Roof Level, with compression forces at 3rd Floor Level. • Fully rigid (moment-resisting) connections, rather than pin connections.

  42. C Site Access Square Option

  43. C Site Layout Square Option

  44. C Equipment Selection Square Option • Hydraulic Excavator (front shovel & backhoe) • Dump truck • Hydraulic mobile crane • Concrete pump

  45. C Constructibility Issues • Curved Form: Steel structure will have non-orthogonal connections. • Symmetry allows for repetitious construction and ordering of steel elements. • Installation of auditorium girders will need careful planning due to variable sizes

  46. C Construction Methods • Building-height columns for quicker construction and elimination of splicing costs. • Prefabrication and off-site connections for quicker construction time. • Exterior steel structure built in segments to give curved affect rather than having rolled members-cheaper and easier construction especially for exterior cladding.

  47. C Construction Methods • Floor by Floor Floor 1 Floor 2 Floor 3

  48. C Construction Methods • Floor by Floor • Phased Floor 1 Floor 2 Floor 3 1 3 3 2

  49. C 4D-Cad Simulation Critical Stages of Construction On-Site

  50. 4D-Cad Simulation

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