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CENTRAL UNIVERISTY ARCHITECTUREJoy Liu, Cal-Berkeley ENGINEERINGNorm Faris, Stanford CONSTRUCTIONTim Kolaya, Georgia Tech OWNERAlex Barron, Stanford Engineering School – New Classroom Project
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Project Information Central University Engineering School Location: Los Angeles Metropolitan Area Busy urban location / heavy traffic Seismic Concerns – San Andreas Fault (8 km)
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Site Location Site in San Francisco Selected for accessibility by team 3 rd Street & Folsom
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Site Photographs
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Design Consideration Remote Team Work Seismic Urban ContextBusy Traffic setting High Tech Neighborhood Warm Climate
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Structural – Loading Conditions Gravity Live Loads(UBC) Classroom / Offices = 50psf Stairs/Corridors = 100psf Auditorium seating = 50psf Roof = 20psf Dead Loads Lightweight Composite Deck = 70psf Concrete Slabs = 12psf/1” thickness Flooring, ceiling and fixtures = 10psf HVAC = 5psf Partitions = 20psf Exterior Cladding = 20psf (Vertical Surface) Lateral Seismic Conditions Seismic Zone 4 Soil Profile = S D Near Source Effects Occupancy Category = 1.0 V = 0.205*W (Moment Frames) V = 0.169*W (EBF) Wind Loading Design Wind Speed (70mph) = 20.2 psf
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Construction Concerns High Ground Water Level Excavation/Shoring Dewatering Los Angeles Traffic ~16 -20 Ft.
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Contact Information PhotoProject Goals Personal Goals A Joy Liu baby_joy1@hotmail.com (510) 665-3961 ► To transform the visionary goal into a reality. ► To provide a design that has an aesthetic exterior & interior, a pleasant atmosphere and potential for future development. ► To gain confidence in my designs/ability to do good architecture. ► To gain knowledge of other related fields, E/C ► To develop my skills as a designer. E Norm Faris nfaris@stanford.edu (650) 497-7558 ►To take the architect’s goals and C’s constraints to engineer a definable structure. ►To design to ensure safety and functionality for normal operation and hazardous events. ►To better develop my interaction level between the A and C. ►To become more efficient in being able to incorporate the A and C’s ideas and issues during the design phase. C Tim Kolaya gt6362c@prism.gatech.edu (404) 607-9227 ►To incorporate constructability ideas and issues within the architect’s and engineer’s designs. ►To develop a project that will be on time and on budget. ►To develop my skills in using IT and other remote-team-based technology. ►To become more familiar with the CM’s interaction with the A/E in project design and development stages. Team Defined Goals – Beginning of Project
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Redesign Ideas: “Sun Rise” Explore the space from underground to top Keep Circulation smooth Think of the functionality of the space
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Sun Rise Old plan New Plan Basement 1 st Floor2 nd Floor Cafe Gym Cafe Gym Cafe
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Sun Rise 3-D Model
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Sun Rise – Structural Alternative 1 Steel Moment Frames Beams: W24 x 84 Columns : W14x120 Gravity System Composite Slab (t = 6.5”) - W14 x 22 Beams Columns: W12 x 50 In Context of Architectural Layout – 2 nd Floor
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Sun Rise – Structural Alternative 1 LOBBY: RADIAL STEEL GRAVITY SYSTEM Beam to Concrete Wall w/ Embedded Plate and Studs W12 Beams w/ 12” Channels @ Perimeter Column to Mat Connection w/ Base Plate and Stiffener W18 Column Roof Opening
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Sun Rise – Structural Alternative 2 Concrete Moment Frames Beams: 18” x 24” Columns : 18” x 18” Gravity System Post Tensioned (PT) Slab Columns: 12” x 12” Lobby – PT Column Beam System Foundation System 6’x6’ Spread Footings w/ 18” Grade Beams 18” Post-Tensioned Mat Foundation below basement 15” Retaining Wall
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Sun Rise – Load Path (Alternative 1 & 2) Lateral Loads Distributed based upon rigidities Rigid Floor Diaphragm Gravity Loads Post – Tension System: Slab – Column - Foundation Composite Concrete & Steel System Deck – Beam – Girder – Column - Foundation
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Sun Rise – Construction Schedule and Cost Breakdown Steel MRF w/ Composite Deck Alt. 2 Concrete MRF w/ Post-Tensioned Deck Alt. 1 Schedule Alt. 1 – 9 months Alt. 2 – 8 months
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Sun Rise - Team Interaction Adapt Old Design Attempt New Layout Collaboration / Final Layout Structural Design 1 st Iteration Initial Estimate Cost Concerns Detailed Estimate Issues Concerns Revisions Updates
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Architecture Vision of 2015 Gaining awareness in Eco- design and sustainable architecture Better and cheaper technology in day-lighting devices
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New Design 1 - Square Plan Design Concepts: “Flying Eagle” In Southern Latitude: –Respond to orientation –Use Natural energy instead of artificial energy –Progression –Repetition of open and compressed space N
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Flying Eagle N
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Model
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Flying Eagle – Structural Alternative 1 Steel Moment Frames Beams: W24 x 84 Columns : W18 x 211 Gravity System Composite Slab (t = 6.5”) w/ W12 x 26 Beams Long Span Trusses @ 3 rd Floor over Auditorium Columns: W12 x 58 Bending due to Lateral Loads induced in the Frame Additional Bending in columns due to Cantilever Support System Additional Costs to Reinforce Columns in their Weak Axis
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Flying Eagle – Structural Alternative 2 Lateral System 2 nd & 3 rd Floors-Shearwall t = 8” Roof - Concrete MRF Beams: 24” x 16” Columns: 16” x 16” Gravity System 9” Flat Plate w/ Drop Beams 1 st Floor Structural System in Context of Architectural Layout
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Flying Eagle – Structural Alternative 3 Concrete Moment Frame Beams: 24” x 18” Columns : 20” x 20” Gravity System 9” Flat Plate w/ Drop Beams between Columns 24” Waffle Slab for 3 rd floor above auditorium Columns: 16” x 16” Foundation System 6’x6’ Spread Footings @ Columns 15” Mat Foundation @ Basement Level 4’ Continuous Footing @ Perimeter Walls 12” Retaining Walls
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Flying Eagle – Cantilever at 3 rd Floor W14 Column Struts – Welded at Frame & Connected to Column w/ Welded Base Plate TS Brace From Exterior Cantilever Columns to Frame Composite Gravity System – Continuous From Main Structure
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M.E.P System All utilities localized at basement Main Distribution Vertical More Narrower Ducts Single Excavation for Services Centralized for efficiency Based upon 30,000 ft 2 Floor Area Cooling Capacity = 90 tons Cooling Air Volume = 35000cfm Total Space for Boiler Room and Chilled Water Plant = 600ft 2 Area of Main Supply or Return Ducts = 20ft 2 Area of Branch Supply or Return Ducts = 35ft 2 Area of Fresh Air Louvers = 80ft 2 Area of Exhaust Air Louvers = 70ft 2
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Flying Eagle – Construction Schedule and Cost Breakdown Steel MRF Alt. 1 Shear Wall Concrete MRF Alt. 2Alt. 3 Schedule Alt. 1 – 7½ months Alt. 2 – 8½ months Alt. 3 – 8 months
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Flying Eagle – Construction Sequencing
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Flying Eagle - Team Interaction Propose Design Structural Limitations Presented Back to the Drawing Board – Revisions Structural Solution Constraints / Constructability Finalize Design Issues Concerns Estimates/ Schedules
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New Design 2 - Diamond Plan Idea: –“Pouring Stream” The contrast of solid and void Changes in experience Bring the flow of vegetation to inside of the building Recreation of Nature
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Pouring Stream New Plan Old Plan
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Pouring Stream
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Section
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Pouring Stream Material Choice –Exterior Glass and lightweight metal with adjustable day-lighting metal panels. –Changes the personality of the building from day to night –Constant movement –Interior Atria space will use wood(cladding) Use concrete at other place. At DayAt Night
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Pouring Stream Model
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Pouring Stream – Structural Alternative 1 Steel Eccentric Brace Frame (EBF) w/ Composite Gravity System W21 x 62 Link Beam W21 ‘Outside’ Beam W12 Columns TS 6 X6 Link Beam w/ Stiffeners
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Pouring Stream – Structural Alternative 1 24” Long Span Truss and Concrete Slab W12 x 50 Columns 6.5” Composite Deck w/ W12 x 26 Beams 8” Bearing Wall @ Elevator Shaft 3 rd Floor Gravity System Cantilever Beam – Column at Central Atrium
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Pouring Stream – Structural Alternative 2 Steel SMRF w/ Shearwalls Beams: W21 x 62 Columns : W14 x 120 Shearwall: 8” Gravity System Composite Deck(t=6.5) w/ W12 x 26 Beams Columns: W12 x 50 In Context of Architectural Layout – 3rd Floor
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Pouring Stream – Structural Alternative 3 Concrete MRF w/ Shearwalls Beams: 16” x 18” Columns : 18” x 18” Shearwall: 8” Gravity System 10” Flat Plate w/ Drop Beams Columns: 12” x 12” Foundation System 6’x 6’ Spread Footings 4’ Cont. Footing @ Retaining Walls 12” Mat Foundation @ Utility Tunnel 12” Perimeter Retaining Wall Moment Frame Connection
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Pouring Stream – Construction Schedule and Cost Breakdown Steel EBF Alt. 1Alt. 2Alt. 3 Steel SMRFConcrete MRF Schedule Alt. 1 – 8 months Alt. 2 – 8½ months Alt. 3 – 9 months
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Pouring Stream - Construction Sequencing
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Pouring Stream - Team Interaction Propose Design Structural Limitations Back to the Drawing Board – Revisions Initial Estimate / Constructability Issues Issues Concerns Finalize Design Estimates / Schedules Structural Solutions Cost Issues
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Site Plan – 2 Footprints
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Equipment Selection Hydraulic Truck Crane Hydraulic Hammer Backhoe Loader / Front-end Loader Welding Machines Cement Mixers / Dump Trucks / various others…
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Crawler – 150 Ton w/ 160 FT. Boom
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Budget Concerns Construction in 2015 Project Budget : $5.5 Million Assumed 3.5% Inflation Adjusted Budget : $3.4 Million Cost Index for L.A. – 110% Pouring Stream - Alt. 2 Pouring Stream - Alt. 1 Flying Eagle - Alt. 3 Flying Eagle - Alt. 2 Flying Eagle - Alt. 1 Sunrise - Alt. 2 Sunrise - Alt. 1 New Adjusted Budget Adjustment for Location - 1.1 Adjustment for Inflation Original 2015 Budget Pouring Stream - Alt. 3
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DECISION MATRIXDECISION MATRIXDECISION MATRIXDECISION MATRIX
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Preferred Design Alternative ‘ POURING STREAM’ A: Effective Space Layout, Potential for Poetic Space, Good Eco-Design Development E: Steel SMRF w/ Shearwalls – Versatile – Efficient - Effective C: Within Budget and Schedule Constraints - Atrium Poses Interesting Challenge
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Team Improvement Team Dynamics A interacts with owner the most E is very good in informing A and C about his progress C is very consistent in keeping group records, organization Improvements More interaction with Owner and Mentors Inform each other about one’s progress more frequently Continue education between three disciplines
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Thank you! We would like to pay our respect and gratitude to our mentors : Brook Barrett - DPR David Bendet -MBT Eric Elsesser - Forell/Elsesser Engineers, Inc Helmut Krawinkler – Stanford Paul Chinowsky – Georgia Tech AND.. Renate Fruchter - Stanford For contributing their valuable time and suggestions, Thank you!
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