The Medical Office Building Kale Mullikin Mechanical Option Advisor: Donghyun Rim
The Medical Office Building Overview Overview • Located in North-East United State Existing Conditions • Exam, Physical Therapy, Radiology, Small Lab Ground Coupled Depth • ~73,000 SF System Design Options Cost Analysis • $21.9 Million Structural Breadth Exam • Currently Under Construction Joist Redesign Physical Girder Redesign Therapy Cost Conclusion Radiology Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Existing Conditions Overview • Packaged Rooftop Units Existing Conditions Summer Design Cooling Winter Design Heating – 70 Ton Ground Coupled Depth (0.4%) (99.6%) – VAV Reheat System Design Options Outdoor Air Dry Bulb 92.4 9.4 • Ductless Split System Units (°F) Cost Analysis Outdoor Air Wet Bulb Structural Breadth • Propane and Electric 74.1 - (°F) Joist Redesign Indoor Air Design Temp Girder Redesign 75 72 (°F) Cost Conclusion Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Trane Modeling • Trane TRACE 700 Overview Electric Gas Total Building • Blocks Defined As: Existing Conditions (kWh) (kBtu) Energy (kBtu/yr) – Conference Ground Coupled Depth Heating - 709,240 709,240 – Corridor System Design Options – Lobby Cost Analysis Cooling 204,744 - 698,791 – Office Structural Breadth – Physical Therapy Joist Redesign Lighting 529,746 - 1,808,024 – Procedure Girder Redesign Cost – Reception Receptacles 115,781 - 395,161 Conclusion – Storage • 115 Tons 3,611,216 • $46,060 Yearly Utility Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Trane Modeling Overview Existing Conditions Ground Coupled Depth System Design Options Cost Analysis Structural Breadth Joist Redesign Girder Redesign Cost Conclusion Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Ground Coupled Motivation Overview • Large area for ground coupled placement Existing Conditions • Eliminate need for propane gas Ground Coupled Depth • Potential for large energy savings System Design Options Cost Analysis • Reduce Emissions Structural Breadth Joist Redesign Girder Redesign Cost Conclusion Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Vertical Well Overview • Required well length of 10,702 ft Existing Conditions – 15% factor of safety Ground Coupled Depth • 36 wells needed System Design Options Cost Analysis – 300’ well depth Structural Breadth Joist Redesign Well Depth (ft) Required Length Number of Wells Girder Redesign Cost 100 10702 108 Conclusion 200 10702 54 300 10702 36 Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Horizontal Well Overview • Required Length of 10,702ft Existing Conditions – 15% factor of safety Ground Coupled Depth • 13 - 800ft runs System Design Options Cost Analysis • 1 – 400ft run Structural Breadth • 10,800ft total Joist Redesign Girder Redesign Cost Conclusion Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Cost Analysis – Rooftop Units Overview • Trane Axiom GER 300 Existing Conditions – 25 Ton Capacity Ground Coupled Depth System Design Options Cost Analysis Original Units New Units Structural Breadth Cost per Unit $62,650 $24,975 Joist Redesign Girder Redesign Number of Units 2 5 Cost Total Cost $125,300 $124,875 Conclusion Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Cost Analysis - Wells Overview • Utility cost after - $42,115 Existing Conditions • Savings - $3,945 Ground Coupled Depth System Design Options Vertical Well Horizontal Well Cost Analysis Structural Breadth Cost per Unit Length $10.57 $1.12 Joist Redesign Total Length 10,702 10,800 Girder Redesign Pipe & Fitting Cost - $6,048 Cost Total Cost $114,156 $18,144 Conclusion Simple Payback 28.9 years 4.6 years Discounted Payback - 4.9 years Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Loads & Original Design Overview • 24K4 Roof Joist Existing Conditions • W18X35 Mechanical Joist Ground Coupled Depth • Loads System Design Options Cost Analysis – Snow Load – 20psf Structural Breadth – Live Load – 30psf Joist Redesign – Dead Load – 8psf Girder Redesign Cost – Collateral – 7psf Conclusion – Mechanical Dead Load – 75psf Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Joist Redesign • 42 nd Edition Catalog of Standard Overview Existing Conditions Specifications and Load and Weight Ground Coupled Depth Tables for Steel Joists and Joist System Design Options Girders Cost Analysis Structural Breadth • New Joists: 20LH08 Joist Redesign Girder Redesign Cost Conclusion Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Girder Redesign Overview • Original Girders Existing Conditions – W24X55 Edge Ground Coupled Depth – W24X68 Center System Design Options 𝑥𝑚 2 Cost Analysis • 𝑁 𝑣 = Structural Breadth 8 Joist Redesign • Redesign Girders Girder Redesign – W21X55 Edge Cost Conclusion – W21X73 Center Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Cost Comparison Overview • Savings of $32,724 Existing Conditions Ground Coupled Depth Original Design Redesign System Design Options Member Cost per Member # of Members Total Cost Member Cost per Member # of Members Total Cost Cost Analysis W18X35 $1,530.00 28 $42,840.00 20LH08 $522.00 28 $14,616.00 Structural Breadth W24X55 $2,640.00 10 $26,400.00 W21X55 $2,190.00 10 $21,900.00 Joist Redesign Girder Redesign W24X68 $2,970.00 2 $5,940.00 W21X73 $2,970.00 2 $5,940.00 Cost $75,180.00 $42,456.00 Conclusion Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Conclusion/Recommendations Overview • Ground coupled system Existing Conditions – Saves $3,945/year Ground Coupled Depth – Vertical Well – Payback of 28.9 years System Design Options – Horizontal Well – Payback of 4.9 years Cost Analysis Structural Breadth • Roof framing redesign Joist Redesign – 20LH08 Joists Girder Redesign Cost – W21X55 and W21X73 Girders Conclusion – Save $32,724 Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Acknowledgements Overview • Dr. Donghyun Rim – Advisor Existing Conditions • Kurt Hutter - Anchor Health Properties Ground Coupled Depth • Randy Cook - The Procz Group Inc. System Design Options Cost Analysis • Family and Friends Structural Breadth Joist Redesign Girder Redesign Cost Conclusion Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Appendices - Charts Overview Electric Gas Total Building Existing Conditions (kWh) (kBtu) Energy (kBtu/yr) Ground Coupled Depth Summer Design Cooling Winter Design Heating Heating - 709,240 709,240 (0.4%) (99.6%) System Design Options Outdoor Air Dry Bulb Cost Analysis 92.4 9.4 Cooling 204,744 - 698,791 (°F) Structural Breadth Outdoor Air Wet Bulb 74.1 - Joist Redesign (°F) Lighting 529,746 - 1,808,024 Girder Redesign Indoor Air Design Temp 75 72 (°F) Cost Receptacles 115,781 - 395,161 Conclusion 3,611,216 Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Appendices - Charts Overview Vertical Well Horizontal Well Original Units New Units Existing Conditions Cost per Unit Length $10.57 $1.12 Cost per Unit $62,650 $24,975 Ground Coupled Depth Total Length 10,702 10,800 Number of Units 2 5 System Design Options Pipe & Fitting Cost - $6,048 Total Cost $125,300 $124,875 Cost Analysis Total Cost $114,156 $18,144 Structural Breadth Simple Payback 28.9 years 4.6 years Joist Redesign Well Depth (ft) Required Length Number of Wells Girder Redesign Discounted Payback - 4.9 years 100 10702 108 Cost Conclusion 200 10702 54 300 10702 36 Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Appendices - Charts Overview Existing Conditions Ground Coupled Depth Original Design Redesign System Design Options Member Cost per Member # of Members Total Cost Member Cost per Member # of Members Total Cost Cost Analysis W18X35 $1,530.00 28 $42,840.00 20LH08 $522.00 28 $14,616.00 Structural Breadth W24X55 $2,640.00 10 $26,400.00 W21X55 $2,190.00 10 $21,900.00 Joist Redesign Girder Redesign W24X68 $2,970.00 2 $5,940.00 W21X73 $2,970.00 2 $5,940.00 Cost $75,180.00 $42,456.00 Conclusion Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
The Medical Office Building Appendices - Figures Overview Existing Conditions Ground Coupled Depth System Design Options Cost Analysis Structural Breadth Joist Redesign Girder Redesign Cost Conclusion Kale Mullikin Mechanical Option Advisor: Donghyun Rim Spring 2015
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