Agenda Arts & Humanities Instructional Building • Arts and Humanities Instructional Building Project Background Project Background • Analysis Areas Roof System • Roof System Analysis Analysis • Façade Sequencing Façade • Waste Management Sequencing Waste Management • Final Conclusions and Recommendations Conclusion Noah J. Ashbaugh Construction Management 2006 Senior Thesis Presentation Noah J. Ashbaugh Construction Management 2006 Agenda Project Background • Arts and Humanities Instructional Building Project Background Project Project • Project Name: Arts & Humanities Instructional Building Background Background • Analysis Areas • Location: Columbia, Maryland Roof System Roof System • Roof System Analysis Analysis Analysis • Delivered Method : CM at risk • Façade Sequencing Façade Façade • Waste Management •Construction Manager : Riparius Construction, Inc. Sequencing Sequencing Waste Waste • GMP : $20 M Management Management • Final Conclusions and Recommendations • Construction Schedule: 22 months Conclusion Conclusion Senior Thesis Presentation Noah J. Ashbaugh Senior Thesis Presentation Noah J. Ashbaugh Construction Management 2006 Construction Management 2006
Agenda Project Background • Arts and Humanities Instructional Building Project Background Project Project • Project Size : Background Background 77,000 sq.ft. • Analysis Areas Roof System Roof System • Roof System Analysis Analysis Analysis • Building Use: Classrooms, • Façade Sequencing Façade Façade offices, musical Sequencing Sequencing • Waste Management and theatrical theaters Waste Waste Management Management • Final Conclusions and Recommendations Conclusion Conclusion Senior Thesis Presentation Noah J. Ashbaugh Senior Thesis Presentation Noah J. Ashbaugh Construction Management 2006 Construction Management 2006 Roof System Analysis Green Roofs Objective: Green roof systems Project Project Compare 4-ply built-up roof system vs. green roof system Two main categories: Background Background • Extensive: 15 psf – 80 psf, typically 4-6 inches deep Roof System Considerations: Roof System •Less Maintenance and smaller plants Analysis Analysis • Cost • Intensive: 80 psf – 150 psf, typically 12 inches deep Façade Façade • Schedule Sequencing Sequencing Benefits: • Structural • Reduce heat gain in summer Waste Waste • Mechanical Management Management • Reduce rainfall runoff impacts Conclusion Conclusion • Reduce sound reflection and transmission Senior Thesis Presentation Noah J. Ashbaugh Senior Thesis Presentation Noah J. Ashbaugh Construction Management 2006 Construction Management 2006
Roof Systems Costs & Scheduling Green roof system Project Project Background Background Extensive roof designed to be 24 psf AHIB 4 inches of growing medium Roof System Roof System Plant selection: sedums Analysis Analysis Façade Façade Green roof Built-up roof system Sequencing Sequencing 4-ply roof Waste Waste 4 inches of rigid insulation Management Management Minimum dead load design 5.5 psf, table C3-1, ASCE7-05 Conclusion Conclusion Senior Thesis Presentation Noah J. Ashbaugh Senior Thesis Presentation Noah J. Ashbaugh Construction Management 2006 Construction Management 2006 Costs & Scheduling Structural Impact W10x12 typ Area Analyzed Material and Installation Summary: Project Project Area over musical theater. Typical bay • Built-up roof @ $1.98 / sf = $ 7,223 Background Background W10x12 beams, 17 ft • Green roof @ $14.43 / sf = $52,640 Roof System Roof System W27x84 girders, 40 ft W27x84 typ Analysis Analysis Live load: 30 psf Cost Difference: $45,417 Façade Façade Snow load: 19.3 psf Sequencing Sequencing Dead load: 49 psf Installation Productivity: Green roof load: 24 psf Waste Waste • Built-up roof @ 2,000 sq.ft installed per day = 13 days 1.2D + 1.6L + .5S = 145 psf Management Management • Green roof @ 1,800 sq.ft installed per day = 14 days Conclusion Conclusion Resizing of structural members is not required • Φ V n ≥ V u • Φ M n ≥ M u • L/240 Senior Thesis Presentation Noah J. Ashbaugh Senior Thesis Presentation Noah J. Ashbaugh Construction Management 2006 Construction Management 2006
Roof System Analysis Mechanical Impact • Greatest thermal savings of a green roof is in Built-up roof system summer months Project Project Background Background Considerations: Results: • Cost • Built-up roof ($45,417) Roof System Roof System • Green roof expected heat Analysis Analysis • Schedule • Faster installation flow reduction is 20% in summer months Façade Façade • Structural • No impact Sequencing Sequencing • Mechanical • No impact Waste Waste Management Management Heat flow calculations Built-up roof: cooling q x = (91-68) * 3,648 / 15.89 = 5,280 btu/hr Conclusion Conclusion Green roof savings = 5,280 btu/hr * 20% = 1,560 btu/hr Senior Thesis Presentation Noah J. Ashbaugh Senior Thesis Presentation Noah J. Ashbaugh Construction Management 2006 Construction Management 2006 Agenda Façade Sequencing Objective: • Arts and Humanities Instructional Building Project Background Project Project Analyze alternative methods for the construction of the facade Background Background Considerations: • Analysis Areas Roof System Roof System • Productivity Analysis Analysis • Roof System Analysis • Cost • Façade Sequencing Façade Façade Sequencing Sequencing • Schedule • Waste Management • Practicality Waste Waste Management Management • Final Conclusions and Recommendations Conclusion Conclusion Senior Thesis Presentation Noah J. Ashbaugh Senior Thesis Presentation Noah J. Ashbaugh Construction Management 2006 Construction Management 2006
Façade Sequencing Why Re-Sequencing? Original Sequence Façade materials • 37 week duration Project Project • Curtain wall Background Background • Pre-finished Roof System Roof System aluminum panels Analysis Analysis • Brick veneer Façade Façade Sequencing Sequencing Waste Waste Management Management Conclusion Conclusion Senior Thesis Presentation Noah J. Ashbaugh Senior Thesis Presentation Noah J. Ashbaugh Construction Management 2006 Construction Management 2006 Façade Sequencing Façade Sequencing Four alternatives identified Alternative C • Alternative A – compress schedule by adding additional crews Project Project • Alternative C phases construction of north façade • Alternative B – compress schedule by adding additional masonry crews Background Background • Later curtain wall activities occur sequentially • Alternative C – phase sequence of north facade • 36 week duration Roof System • Alternative D – change aluminum panels to masonry veneer Roof System Analysis Analysis Façade Façade Sequencing Sequencing Waste Waste Management Management Conclusion Conclusion Senior Thesis Presentation Noah J. Ashbaugh Senior Thesis Presentation Noah J. Ashbaugh Construction Management 2006 Construction Management 2006
Agenda Façade Sequencing Alternative C • Arts and Humanities Instructional Building Project Background Project Project Background Background Considerations: Results: • Analysis Areas Roof System Roof System • Productivity • No loss of productivity Analysis Analysis • Roof System Analysis • Cost • ($13,544) • Façade Sequencing Façade Façade Sequencing Sequencing • Schedule • One week faster • Waste Management Waste Waste Management Management • Final Conclusions and Recommendations Conclusion Conclusion Senior Thesis Presentation Noah J. Ashbaugh Senior Thesis Presentation Noah J. Ashbaugh Construction Management 2006 Construction Management 2006 Waste Management Waste Management Objective: Materials Project Project Develop a waste management plan for the AHIB • Wood Background Background • Concrete Considerations: Roof System Roof System • Gypsum board Analysis Analysis • Cost • Accessibility Façade Façade Anticipated recycling Sequencing Sequencing • Practicality • Concrete: 37 tons Waste Waste • Wood: 18 tons Management Management • Gypsum board: 7 tons Conclusion Conclusion Senior Thesis Presentation Noah J. Ashbaugh Senior Thesis Presentation Noah J. Ashbaugh Construction Management 2006 Construction Management 2006
Waste Management Waste Management Source separated Project Project • Construction debris separated at jobsite into Background Background different recycling bins Roof System Roof System Analysis Analysis Costs Façade Façade • Tipping fee Sequencing Sequencing • Rental fee Waste Waste Management Management • Hauling fee Conclusion Conclusion Senior Thesis Presentation Noah J. Ashbaugh Senior Thesis Presentation Noah J. Ashbaugh Construction Management 2006 Construction Management 2006 Waste Management Waste Management Waste management plan Project Project Background Background Waste Management Considerations: Results: Roof System Roof System • Site Utilization Plan Analysis Analysis • Cost • ($2,500) • Accessibility • Recycling centers are available Façade Façade Sequencing Sequencing Waste Waste Management Management Conclusion Conclusion Senior Thesis Presentation Noah J. Ashbaugh Senior Thesis Presentation Noah J. Ashbaugh Construction Management 2006 Construction Management 2006
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