The Office Building Washington, D.C. Penn State Architectural Engineering Senior Capstone Project Brett Miller | Construction Option Advisor: Dr. Ed Gannon
Brett Miller The Office Building Introduction Construction Washington, D.C. Analysis 2 | Neighboring Foundation Support Research| Retaining Structures Project Overview Analysis 1 | Foundation Walls Analysis 3 | Value Engineering
Brett Miller The Office Building Project Overview Construction Washington, D.C. Presentation Outline Project Overview Project Size 108,000 SF Research | Retaining Structures Analysis 1 | Foundation Walls Height Above Grade 9 Stories Cost Schedule Contract Value $30.5 million Conclusion Dates of Construction March 2013 – March 2015 Analysis 2 | Neighboring Foundation Support Cost Occupant Undetermined Schedule Conclusion Primary Use Office Building Analysis 3 | Value Engineering Owner Mid Atlantic Realty Electrical Breadth | Sizing wire/Busway Cost General Contractor James G. Davis Construction Schedule Conclusion Architect Gensler Conclusion & Recommendations Acknowledgements
Brett Miller The Office Building Research | Retaining Structures Construction Washington, D.C. Presentation Outline Project Overview Advantages Disadvantages Research | Retaining Structures Analysis 1 | Foundation Walls Costly Cost Sheet Piling (A) Watertight Excavation Time Consuming Schedule Conclusion Soldier Piles and Lagging Less Expensive Loud Installation Analysis 2 | Neighboring Foundation Support (B) Faster Not Watertight Cost Schedule Watertight Conclusion Extremely Costly Concrete Slurry Walls (C) Extreme Depths Analysis 3 | Value Engineering Time Consuming Foundation Walls Electrical Breadth | Sizing wire/Busway Cost Top Down Construction (D) Fast Schedule Geotech. Considerations Ground Stability Conclusion Conclusion & Recommendations Acknowledgements D C
Brett Miller The Office Building Analysis 1 | Foundation Walls Construction Washington, D.C. Presentation Outline Project Overview Problem Identification Research | Retaining Structures Analysis 1 | Foundation Walls Cost Extensive support of excavation Schedule Conclusion Analysis 2 | Neighboring Foundation Support 60 Foundation wall box-outs Cost Schedule Formwork time/cost Conclusion Analysis 3 | Value Engineering Electrical Breadth | Sizing wire/Busway Potential Solutions Cost Schedule Conclusion Replace CIP with shotcrete to reduce formwork Conclusion & Recommendations Acknowledgements
Brett Miller The Office Building Analysis 1 | Foundation Walls Construction Washington, D.C. Presentation Outline Cost Comparison Project Overview Total Cost $250,000.00 Research | Retaining Structures Cast-in-Place $314,943.96 Analysis 1 | Foundation Walls Cost Shotcrete $237,816.54 Schedule $200,000.00 Savings $77,127.42 Conclusion Analysis 2 | Neighboring Foundation Support Cost $150,000.00 Schedule Total Cost Savings Conclusion Cast-in-Place Analysis 3 | Value Engineering Shotcrete Electrical Breadth | Sizing wire/Busway $100,000.00 Cost Schedule 24.5% Savings Conclusion Conclusion & Recommendations $50,000.00 Acknowledgements $0.00 Material Labor Equipment
Brett Miller The Office Building Analysis 1 | Foundation Walls Construction Washington, D.C. Presentation Outline Schedule Comparison Project Overview 30 Final Schedule Research | Retaining Structures Cast-in-Place 48 Days Analysis 1 | Foundation Walls Cost 25 Shotcrete 15 Days Schedule Savings 33 Days Conclusion Analysis 2 | Neighboring Foundation Support 20 Cost Schedule Days Total Schedule Savings Conclusion 15 Cast-in-Place Analysis 3 | Value Engineering Shotcrete Electrical Breadth | Sizing wire/Busway 10 Cost Schedule 68.8% Savings Conclusion 5 Conclusion & Recommendations Acknowledgements 0 P1 P2 P3 Level
Brett Miller The Office Building Analysis 1 | Foundation Walls Construction Washington, D.C. Presentation Outline Project Overview Cast-in-Place Research | Retaining Structures $77,000 Analysis 1 | Foundation Walls Shotcrete 33 Days Cost Schedule Conclusion 60 Analysis 2 | Neighboring Foundation Support $350,000.00 Cost Schedule $300,000.00 45 Conclusion $250,000.00 Analysis 3 | Value Engineering $200,000.00 Electrical Breadth | Sizing wire/Busway 30 Cost $150,000.00 Schedule $100,000.00 Conclusion 15 Conclusion & Recommendations $50,000.00 Acknowledgements $0.00 0 Cost Schedule
Brett Miller The Office Building Analysis 2 | Neighboring Foundation Support Construction Washington, D.C. Presentation Outline Project Overview Problem Identification Research | Retaining Structures Analysis 1 | Foundation Walls Cost Historic building on West property line Schedule Conclusion Analysis 2 | Neighboring Foundation Support Foundation needs supported Cost Schedule Secant Wall duration Conclusion Analysis 3 | Value Engineering Electrical Breadth | Sizing wire/Busway Potential Solutions Cost Schedule Conclusion Replace Secant Wall with Slurry Wall Conclusion & Recommendations Acknowledgements
Brett Miller The Office Building Analysis 2 | Neighboring Foundation Support Construction Washington, D.C. Presentation Outline Cost Comparison Project Overview $450,000 Total Cost Research | Retaining Structures Secant Wall $551,000 Analysis 1 | Foundation Walls $400,000 Cost 24” Slurry Wall $744,000 Schedule $350,000 Additional Costs $193,000 Conclusion Analysis 2 | Neighboring Foundation Support $300,000 Cost Schedule $250,000 Conclusion Secant Wall Analysis 3 | Value Engineering 24" Slurry Wall $200,000 Electrical Breadth | Sizing wire/Busway Cost $150,000 + Schedule Conclusion $100,000 Conclusion & Recommendations 35% Increase Acknowledgements $50,000 $0 Material Labor Equipment Mob/Demob
Brett Miller The Office Building Analysis 2 | Neighboring Foundation Support Construction Washington, D.C. Presentation Outline Schedule Comparison Project Overview Final Schedule 12 Research | Retaining Structures Secant Wall 15 Days Analysis 1 | Foundation Walls Cost Slurry Wall 15 Days 10 Schedule Savings 0 Days Conclusion Analysis 2 | Neighboring Foundation Support 8 Cost Schedule Conclusion Total Schedule Savings Days Secant Wall 6 Analysis 3 | Value Engineering 24" Slurry Wall Electrical Breadth | Sizing wire/Busway Cost 4 Schedule Conclusion Conclusion & Recommendations 0% Savings 2 Acknowledgements 0 Mob/Demob Installation
Brett Miller The Office Building Analysis 2 | Neighboring Foundation Support Construction Washington, D.C. Presentation Outline Project Overview Research | Retaining Structures Secant Wall $193,000 Analysis 1 | Foundation Walls 0 Days Cost 24” Slurry Wall Schedule Conclusion Analysis 2 | Neighboring Foundation Support 20 $800,000 Cost Schedule Conclusion 15 $600,000 Analysis 3 | Value Engineering Electrical Breadth | Sizing wire/Busway 10 Cost $400,000 Schedule Conclusion 5 $200,000 Conclusion & Recommendations Acknowledgements $0 0 Cost Schedule
Brett Miller The Office Building Analysis 3 | Value Engineering Construction Washington, D.C. Presentation Outline Project Overview Problem Identification Research | Retaining Structures Analysis 1 | Foundation Walls Cost Unforeseen costs Schedule Conclusion Analysis 2 | Neighboring Foundation Support Over budget Cost Schedule Expensive copper feeder Conclusion Analysis 3 | Value Engineering Electrical Breadth | Sizing wire/Busway Potential Solutions Cost Schedule Conclusion Replace copper wiring with less expensive system Conclusion & Recommendations Acknowledgements
Brett Miller The Office Building Analysis 3 | Value Engineering Construction Washington, D.C. Presentation Outline Sizing Aluminum Wiring Sizing Aluminum Busway Project Overview 2500 𝐵 Load per Switchboard 2500 𝐵 Load per Switchboard Research | Retaining Structures Analysis 1 | Foundation Walls Cost Table 310.15 B 16 GE Spectra Series Busway Schedule Conclusion ↳ 500 𝑙𝑑𝑛𝑗𝑚 → 310 𝐵 Table 8.1 Analysis 2 | Neighboring Foundation Support Cost ↳ 2 bars → 1 1 8 " Thick per Phase & Neutral 2500 𝐵 310 𝐵 = 8.06 → 9 𝑇𝑓𝑢𝑡 ∗ 310 𝐵 = 2790 𝐵 Schedule Conclusion Table 11.1 Analysis 3 | Value Engineering Table 250 − 66 Electrical Breadth | Sizing wire/Busway ↳ 4.5" × 15.0" 15.0” Cost 𝐵𝑋𝐻 𝐵𝑀 ↳ 500 𝑙𝑑𝑛𝑗𝑚 𝐵𝑀 → 1 0 Schedule Conclusion Table C. 1 4.5” Conclusion & Recommendations Acknowledgements ↳ 4 500 𝑙𝑑𝑛𝑗𝑚 + 1 1 0 → 4" Conduit
Brett Miller The Office Building Analysis 3 | Value Engineering Construction Washington, D.C. Total Cost Presentation Outline Cost Comparison Copper Wiring $330,436.85 Project Overview $200,000.00 Aluminum Wiring $313,076.71 Research | Retaining Structures Analysis 1 | Foundation Walls Aluminum Busway $225,346.06 Cost Schedule $150,000.00 Conclusion Analysis 2 | Neighboring Foundation Support Aluminum Wiring Cost Savings Aluminum Busway Cost Savings Cost Schedule Copper Wiring Conclusion $100,000.00 Aluminum Wiring Analysis 3 | Value Engineering Aluminum Busway Electrical Breadth | Sizing wire/Busway Cost Schedule $50,000.00 Conclusion Conclusion & Recommendations Acknowledgements 5% Savings 32% Savings $0.00 Material Labor
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