AE Senior Thesis Final Oklahoma University Report Children’s Medical Office April 14, 2014 Building Jonathan Ebersole Structural Option Dr. Hanagan Oklahoma City, Oklahoma
• Introduction Building Statistics • Building Statistics • Project Team • Location: 1200 North Children’s Avenue, Oklahoma City, Oklahoma • Existing Structure • Occupancy: Office • Proposal • Size: 320,000 gsf • Structural Depth • Height: 12 stories for a total of 172 ft. • Architectural Breadth • Construction Dates: February 2007- Spring 2009 • Construction Breadth • Building Cost: $59,760,000 • Conclusion • Delivery Method: Design-Bid-Build
• Introduction Project Team • Building Statistics • Project Team • Existing Structure • Owner: University Hospitals Trust • Proposal • Construction Manager: Flintco, Inc. • Structural Depth • Project Architect: Miles Associates • Architectural Breadth • Structural Engineer: Zahl-Ford Inc. • Construction Breadth • MEP Engineer: ZRHD, P.C. • Conclusion • Civil Engineer: Smith, Roberts, Baldischwiler, Inc.
• Introduction Existing Building Structure Typical Bay • Building Statistics • Project Team Gravity • Existing Structure • Reinforced, cast-in-place concrete • Proposal • Foundations • Structural Depth • Drilled piers, spread footings, and grade beams • Architectural Breadth • Two way flat slab system with drop panels 26’ • Construction Breadth • 10” slab with 4” drop panels • Conclusion • Exterior Beams 32’
• Introduction Existing Building Structure • Building Statistics Lateral Layout • Project Team Lateral • Existing Structure • Reinforced cast-in-place concrete shear • Proposal walls • Structural Depth • Located in stairwells, elevator shafts, and • Architectural Breadth center of floor plan • Construction Breadth • Typically 12” thick • Conclusion • Moment frames located along the floor plan perimeter N
• Introduction Problem Statement • Proposal • Problem Statement • Depth Introduction • Reduce overall building costs • Breadth Introduction • Reduce the schedule duration • Structural Depth • Develop an economical steel system • Architectural Breadth • Maintain a low impact on the building • Construction Breadth architecture • Conclusion http://www.metalconstructionnews.com/articles/columns/high- flying-inspiration.aspx
• Introduction Design Loads • Proposal Gravity Loads Lateral Load Base Shears • Structural Depth • Design Loads Floors Wind Loads • RAM Model Live Load 80 psf Wind N-S 430 kips Superimposed Dead Load 15 psf • Composite Steel Redesign Wind E-W 942 kips Flooring 2 psf • Steel Joist Redesign Seismic Roof • Lateral System Redesign Seismic N-S 447 kips Roof Live Load 20 psf Seismic E-W 447 kips • Drift Comparison Snow Load 10 psf • Architectural Breadth Green Roof Dead Load 30 psf • Wind E-W controls Superimposed Dead Load 15 psf • Construction Breadth Additional Loads • Conclusion Helicopter Pad Dead Load 8.33 kips Ambulance Bay Live Load 60 psf
• Introduction RAM Model • Proposal • Structural Depth Model Assumptions • Design Loads • Columns are considered as pinned connections at the • RAM Model base • Composite Steel Redesign • Wind Loads are to be applied at the center of pressure • Steel Joist Redesign • Each floor diaphragm is considered rigid • Lateral System Redesign • Drift Comparison • Architectural Breadth • Construction Breadth N • Conclusion
Typical Bay • Introduction Composite Steel Floor • Proposal Redesign • Structural Depth • Typical Bay • Design Loads • 1.5 VLR 22 gauge composite deck • RAM Model • 3 ¼” lightweight topping • Composite Steel Redesign • Unshored, 3 span construction • Steel Joist Redesign • Beams • Lateral System Redesign • W14x22 with 20 studs and a 1” camber • Drift Comparison • Girders • Architectural Breadth • W16x31 with 38 studs and a ¾” chamber • Construction Breadth • Beams, girders, and columns are to be fireproofed for • Conclusion a two hour fire rating N
• Introduction Typical Roof Bay Steel Joist Roof Redesign • Proposal • Structural Depth • Design Loads • Typical Bay • RAM Model • 1.5 B 22 gauge roofing deck • Composite Steel Redesign • Unshored, 3 span construction • Steel Joist Redesign • Joists • Lateral System Redesign • 24K9 joists • Drift Comparison • Girders • Architectural Breadth • W18x40 • Construction Breadth • Roof deck, joists, girders, and columns • Conclusion will be fireproofed for a two hour fire N rating
• Introduction Lateral System Redesign Lateral System Layout • Proposal • Structural Depth • Design Loads • Concentric, diagonal braced frames • RAM Model • Located in existing shear wall • Composite Steel Redesign locations • Steel Joist Redesign • Consists of square HSS steel tubes • Lateral System Redesign • Additional moment frames are needed • Drift Comparison • Located along the eastern wall • Architectural Breadth • Moment frames where used to • Construction Breadth minimize the impact on the architecture • Conclusion Concentric Braced Frames N Additional Frames
• Introduction Drift Comparison Building Drift Under Controlling Case • Proposal • Structural Depth • Existing concrete lateral system drift: 4.77 inches • Design Loads • Proposed steel lateral system drift: 4.75 inches • RAM Model • IBC 2009 allowable building drift: 4.98 inches • Composite Steel Redesign • Steel Joist Redesign • Lateral System Redesign • Drift Comparison • Architectural Breadth • Construction Breadth • Conclusion N
• Introduction Plant Selection • Proposal • Structural Depth • Oklahoma City hardiness zone: 7a and 7b • Architectural Breadth • Identifies the appropriate plants for a • Plant selection specific environment • Material Selection • Sedum plants are used • Impact on Structural System • Hardy plants that can survive a variety of • Green Roof Cost Analysis different environments Sedum Floriferum • Construction Breadth http://macgardens.org • Can grow in shallow soil depths /?m=201306 • Conclusion • Ability to resist droughts Sedum Oreganum http://www.greatcity.org/
• Introduction Material Selection • Proposal • Structural Depth • Architectural Breadth • Growing Medium • Plant selection • Rooflite Extensive MCL • Material Selection • Filter Fabric • Impact on Structural System • Green Roof Solutions FF35 • Green Roof Cost Analysis • Drainage Panel • Construction Breadth • Green Roof Solutions GRS 32 • Conclusion Image obtained from http://www.vegetalid.us/green-roof- systems/green-roof-101/what-is-a-green-roof
• Introduction Material Selection • Proposal • Structural Depth • Root Barrier • Architectural Breadth • Green Roof Solutions RB20 • Plant selection • Waterproof Membrane • Material Selection • Kemper System Kempero 2K-PUR • Impact on Structural System • Rigid Insulation • Green Roof Cost Analysis • DOW Building Solutions Highload 60 Insulation • Construction Breadth • Vapor Barrier • Conclusion • Roof Aqua Guard BREA Image obtained from http://www.vegetalid.us/green-roof- systems/green-roof-101/what-is-a-green-roof
• Introduction Impact on the Structural • Proposal System • Structural Depth Material Weight • Architectural Breadth • Initial dead load estimation for the green roof was Vegetation 2 psf • Plant selection 30 psf. Growing Media 17 psf • Material Selection • The total dead load for the green roof is 22 psf Filter Fabric 0.024 psf • Impact on Structural System • The estimated dead load is conservative Drainage Panel (Including Water) 2 psf compared to the actual dead load • Green Roof Cost Analysis Root Barrier 0.05 psf Water Proof Membrane 0.05 psf • Construction Breadth Total 22 psf • Conclusion
• Introduction Green Roof Cost Analysis • Proposal Green Roof • Structural Depth Unit Unit Quantity Waste Factor Labor Equipment Total Price • Architectural Breadth Vegetation S.F. 22705.50 1.00 2.50 0.33 0.00 64256.57 • Green roofs have a higher initial costs compared to a • Plant selection Growing standard built up roof S.F. 22705.50 1.00 0.25 0.53 0.41 27019.55 • Material Selection Medium • Using RS Means Cost Construction Data, the total S.F. 22705.50 1.00 0.26 3.88 0.51 105580.58 Filter Fabric • Impact on Structural System additional cost for the green roof is $412,000.00 S.F. 22705.50 1.00 2.70 0.67 0.00 76517.54 • Green Roof Cost Analysis Drainage Panel • Construction Breadth Root Barrier S.F. 22705.50 1.00 0.70 0.77 0.00 33377.09 Water Proof • Conclusion S.F. 22705.50 1.00 0.26 3.88 0.51 105580.58 Membrane Total: $412,331.88
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