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RIDGE TEAM Spring Presentation

RIDGE TEAM Spring Presentation. TEAM MEMBERS. Architect : Amy Wang Stanford University Structural Engineer : Per Karlsten KTH, Sweden. Construction Manager : Kostas Dimitros Stanford University Apprentice: Lars Keim FHA, Switzerland. Owner : Peter Demian. SITE.

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RIDGE TEAM Spring Presentation

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  1. RIDGE TEAM Spring Presentation

  2. TEAM MEMBERS Architect : Amy Wang Stanford University Structural Engineer : Per Karlsten KTH, Sweden Construction Manager : Kostas Dimitros Stanford University Apprentice: Lars Keim FHA, Switzerland Owner : Peter Demian

  3. SITE Site Location: Lake Tahoe Area, California Plentiful Sunshine Heavy Winter Snow

  4. WINTER QUARTER Pros Cons Concept 1 • Curved glass and atrium to provide abundant natural light • Short Construction time • Lower cost – use of prefabrication • Extensive use of glass • Expensive Cantilever Steel Light structure Fire Protection Concrete Few Vibration Problems Concrete/glass interaction Concept 2 • Private and public outdoor gathering spaces • Open office plan • Extensive use of glass • Tight classrooms • Lack of natural light in basement level Steel Construction time Acoustic Problems Concrete Acoustic/Fire Concrete/Glass interaction

  5. ARCHITECTURE – SITE RESPONSE NaturalLight View out Entrance View and Light View from Main Road

  6. ARCHITECTURE – FLOOR PLANS Auditorium Small Classrooms Large Classrooms N EW Section Ground Plan

  7. ARCHITECTURE – FLOOR PLANS Student Offices Computer Machine Room Seminar Rooms Technical Labs N EW Section FirstFloor Plan

  8. ARCHITECTURE – FLOOR PLANS Faculty Offices Faculty Lounge Admin Offices/Chair Offices EW Section N Second Floor Plan

  9. ARCHITECTURE – FLOOR PLANS Atrium Vertical Circulation M&E systems EW Section Ground Plan First Floor Plan Second Floor Plan

  10. ARCHITECTURE - ATRIUM 1 4 3 1 2 2 3 4

  11. ARCHITECTURE

  12. ARCHITECTURE - DAYLIGHTING • Day-lighting • Daylighted rooms show greater performance by the occupants • Reducing energy in lighting and heating Heschong Mahone Group. “Daylighting in Schools” August 20, 1999. Submitted to George Loisos, PG&E.

  13. ARCHITECTURE - GLAZING • .Lightshelf • Direct sun and glare • Exterior shading controls solar gain and glare • Double-pane • Insulation • Operable Shade • Allows occupant control

  14. EAST/SOUTH FACADE East Facade Reflective louvers South Facade Redirecting glazing Lightshelf of about 4’

  15. PERFORMANCE ANALYSIS

  16. STRUCTURAL ENGINEERING

  17. LOADS GRAVITY Deadloads Concrete 144 pcf Steel 490 pcf Liveloads Offices 50 psf Classrooms 40 psf Corridors 100 psf Auditorium 50 psf Snowload 250 psf • LATERAL • Earthquake (Seismic Zone 3) • Quasi static force ~0.16xWeight. • Total weight: • 1300 metric tons.

  18. STRUCTURAL SYSTEM Ground Floor 1st Floor

  19. STRUCTURAL SYSTEM 2nd FLOOR

  20. SIZES Columns: HP14x89 Bracing: W18x192 S18x54.7 W21x166 W18x106 S15x42.9 ROOF 2ND FLOOR 1ST FLOOR

  21. FOUNDATION SOLUTION The soil conditions: Gravel layer over granite.

  22. DYNAMIC ANALYSIS PARTIALLY PRESTRESSED COMPOSITE GLASS

  23. STEEL CONNECTIONS HP14x89 BOLTS M24 W21x166 W18x192 HP14x89

  24. DEFLECTIONS VERTICAL Max deflections: Z: -16 mm z y x

  25. DEFLECTIONS LATERAL Max deflections: X: 23mm Y: 27mm z y x

  26. PROBLEM AREA COLUMN Column location above the auditorium. Load transfer system Gravity force Internal force

  27. PROBLEM AREA FLAT ROOF • CON • HIGH SNOWLOAD • HEAVIER ROOF • EXPENSIVE DRAINING • PRO • MORE ARCHITECTUAL SPACE • LESS EXCAVATION • MEET HEIGHT RESTRICTION

  28. CONSTRUCTION BUDGET Reference for 2.5% inflation rate: Prof. Robert Sahr,Political Science Dept. Oregon State University

  29. SUMMARY Structural system:Steel Structure Time completion: 11 months (Mon 6/8/15- Wed 4/27/16) Cost estimation:$4,091,056.04

  30. SITE PLAN

  31. EQUIPMENT Crane Link Belt:LS-138H II Lattice Crawler Crane 80 Ton (77.62 mt) Excavator John Deere 560LC Front Loader Caterpillar 834G

  32. EQUIPMENT Concrete mix trucks Concrete Pumps Forklift NissanF05 SERIESHeavyweight Pneumatic Gradall G6-42A

  33. MECHANICAL Information needed: Architect – space Structural - weight Electrical – POWER Plumbing – gas, H2O, drains Air cooled system 1. Lighter 2. less maintenance 3. less expensive Cooling towers and boilers from main University facility

  34. MECHANICAL ROOM Coils Air Handler Insulated chiller pipes Condenser pumps

  35. HVAC DISTRIBUTION VAV box Terminal units

  36. ELECTRICAL 1.Main Electrical Room Size: 12'X 8'; 2nd & 3rd flr Elec Rm size 6'X 6' 2. Cost for whole system is $210,000.00 3. Metal conduit for feeders, cable tray for telephone cables. 4. After building is raintight: 2 months.

  37. ELECTRICAL Single Line Diagram

  38. PLUMBING Waste and Vent system

  39. PLUMBING Circulating pump Hot/Cold water supply and return

  40. SPRINKLERS Horizon™ Flush Sprinklers • Light Hazard Occupancy • Spacing max 15-16ft • Protection Area 168 ft • Duration 30 min Viking Preaction Systems a)against accidental water discharge b)speed the action of large dry pipe systems. Single-Interlocked Preaction System Double-Interlocked Systems

  41. SPRINKLERS About 3.5$/sf or $105,000 (3% of total cost) $ 23.67 $ 27.74

  42. DRAINAGE SYSTEM Sidewalk below grade, so good drainage system is needed. Drainage system at Landscape

  43. DRAINAGE SYSTEM Drainage system at Roof

  44. SIDEWALK PROBLEM Icy sidewalk Solution 1:Sprinkling groundwater over the icy surfaces No: Problems of ground subsidence and falling groundwater Solution 2: Electing heating cables/burning oil or gas No: Consumption of fossil fuels emission of CO2 Solution 3: Hot water through copper tubing No: Consumption of energy/water

  45. SIDEWALK SOLUTION Winter: DCHE can extract heat from subsurface strata Summer:The solar heat is recovered from the road and stored in the earth Gaia snow-melting system 60% more expensive Low running cost, long service life cheaper in 10 year period (depreciation,interest)

  46. CONSTRUCTION SEQUENCE

  47. COST ESTIMATION Steel Frame $ 324,000

  48. COST ESTIMATION Curved Glass Wall $ 80/sf

  49. COST ESTIMATION MEP Systems $ 1,285,500 $ 4,091,068.04

  50. COST COMPARISONS Winter Spring Cost estimation: $4,285,516.40 Cost estimation: $4,091,056.04 Contingencies(10%) General conditions(8%) Fee(4-6%) Excess Liabalility (0.67%)

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