RESIDENCE INN Critical Industry Research: Greening of Hotels BY - PDF document

4/17/2008 Presentation Outline � Project Overview � Analysis 1: Structural Breadth � Analysis 2: Controls Breadth � Analysis 2: Controls Breadth � Analysis 3: Greywater Breadth RESIDENCE INN � Critical Industry Research: “Greening” of Hotels BY MARRIOTT � Conclusions ALEXANDRIA, VA Julia Phillips Construction Management Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT Project Overview Project Team Tenant PROJECT PROJECT Owner OVERIVEW OVERIVEW ANALYSIS 1: ANALYSIS 1: STRUCTURAL STRUCTURAL RE-DESIGN RE-DESIGN Architect ANALYSIS 2: ANALYSIS 2: ANALYSIS 2: ANALYSIS 2: Construction Manager Construction Manager CONTROLS CONTROLS ANALYSIS 3: ANALYSIS 3: GREYWATER GREYWATER CRITICAL CRITICAL Structural Engineer Mechanical Engineer INDUSTRY INDUSTRY Electrical Engineer RESEARCH: RESEARCH: � Size: 15 Stories, 127,000 SF w/ 3 Levels Underground Parking “GREENING” “GREENING” OF HOTELS OF HOTELS � Construction Cost: $33.5 Million CONCLUSION CONCLUSION � Schedule: March 2007 – August 2008 Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT Delivery Method Building Systems � CM @ Risk w/ GMP → Traditional Design – Bid – Build � Architecture PROJECT PROJECT OVERIVEW OVERIVEW Off ‐ set exterior edge � � MEP → Design – Build � Punch ‐ out windows ANALYSIS 1: ANALYSIS 1: Brick and pre ‐ cast façade with CMU back up STRUCTURAL STRUCTURAL � RE-DESIGN RE-DESIGN “Column of Light” � � 20 LEED points ANALYSIS 2: ANALYSIS 2: ANALYSIS 2: ANALYSIS 2: CONTROLS CONTROLS ANALYSIS 3: ANALYSIS 3: GREYWATER GREYWATER CRITICAL CRITICAL INDUSTRY INDUSTRY RESEARCH: RESEARCH: “GREENING” “GREENING” OF HOTELS OF HOTELS CONCLUSION CONCLUSION Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT 1

4/17/2008 Building Systems Site Conditions � Structural PROJECT PROJECT OVERIVEW OVERIVEW WMATA � 3’ Mat slab ‐ Foundation Metro ANALYSIS 1: ANALYSIS 1: � 8” CIP slab with drop panels ‐ Garage STRUCTURAL STRUCTURAL � 7.5” post ‐ tensioned floor slabs ‐ Tower RE-DESIGN RE-DESIGN Metro Tracks Site ANALYSIS 2: ANALYSIS 2: ANALYSIS 2: ANALYSIS 2: Boundary Site access from I ‐ 495 CONTROLS CONTROLS ANALYSIS 3: ANALYSIS 3: GREYWATER GREYWATER Building Site CRITICAL CRITICAL INDUSTRY INDUSTRY RESEARCH: RESEARCH: Mill Rd. “GREENING” “GREENING” OF HOTELS OF HOTELS Capital Beltway I ‐ 495 CONCLUSION CONCLUSION Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT Re-Design of Underground Garage � Background PROJECT OVERIVEW � 8” slab with 5.5” drop panels = 13.5” ANALYSIS 1: STRUCTURAL � Cure to full 28 day strength RE-DESIGN Analysis 1: Structural Re-Design of Analysis 1: Structural Re Design of � Unexpected Water Issues p ANALYSIS 2: ANALYSIS 2: CONTROLS Underground Garage ANALYSIS 3: GREYWATER CRITICAL INDUSTRY RESEARCH: “GREENING” OF HOTELS CONCLUSION Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT Re-Design of Underground Garage Flat Plate Design � Goal � Eliminate Drop Panels by PROJECT PROJECT OVERIVEW OVERIVEW Direct Design Method � Decrease floor depth, minimize materials, accelerate ANALYSIS 1: ANALYSIS 1: � h = 10 in. d = 8.50 in. schedule STRUCTURAL STRUCTURAL RE-DESIGN RE-DESIGN � Utilize Flat Plate OR Filigree Slab and Beam System ANALYSIS 2: ANALYSIS 2: ANALYSIS 2: ANALYSIS 2: � * Assume Columns are In Assume Columns are In � � Compare Original, Flat Plate, Filigree CONTROLS CONTROLS Line Frame B @ 17' Frame B @ 17' � Lbs. / SF of Steel ANALYSIS 3: ANALYSIS 3: � * Assume 10 Column Lines � Total steel tonnage GREYWATER GREYWATER Frame A @ 27' Frame A @ 27' � Steel Cost � * Assume All Columns are CRITICAL CY of Concrete CRITICAL � INDUSTRY Depth of slab, beam, and drop panel INDUSTRY 18" x 30" � RESEARCH: RESEARCH: Concrete Cost � Frame A @ 10' Frame A @ 10' “GREENING” “GREENING” � * Frame C is Doubled Total formwork SF � Frame C @ 17' Frame C @ 17' OF HOTELS OF HOTELS Formwork Cost � � Total Duration CONCLUSION CONCLUSION Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT 2

4/17/2008 Flat Plate Design Filigree Slab & Beam Design � Results PROJECT PROJECT OVERIVEW OVERIVEW Column Strip Middle Strip Description M EXT ‐ M EXT + M INT + M INT ‐ M EXT ‐ M EXT + M INT + M INT ‐ ANALYSIS 1: ANALYSIS 1: STRUCTURAL Frame A @ 10' (6) #6 (10) #6 (10) #4 (10) #4 STRUCTURAL Filigree Slab and RE-DESIGN Frame A @ 27' (6) #6 (6) #6 (6) #6 (6) #5 (10) #4 (10) #4 RE-DESIGN Analysis Description Beam System Frame B @ 17' (5) #6 (5) #6 (13) #4 (13) #4 Steel (TONS) 48.00 ANALYSIS 2: ANALYSIS 2: ANALYSIS 2: ANALYSIS 2: Frame C @ 17 Frame C @ 17' (2) #4 (2) #4 (3) #4 (3) #4 (5) #4 (5) #4 (5) #4 (5) #4 Steel (lbs./SF) 2.25 CONTROLS CONTROLS Concrete (CY) 816.67 Re ‐ Designed CIP Slab Analysis Description Concrete Drop/Beam (in.) 11.5 ANALYSIS 3: ANALYSIS 3: without Drop Panels GREYWATER GREYWATER Concrete Slab (in.) 6 Steel (TONS) 42.10 Steel (lbs./SF) 1.91 CRITICAL Concrete (CY) 1361.11 CRITICAL Concrete Drop/Beam (in.) 0 INDUSTRY INDUSTRY Concrete Slab (in.) 10 RESEARCH: RESEARCH: “GREENING” “GREENING” OF HOTELS OF HOTELS CONCLUSION CONCLUSION Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT System Comparison Schedule Reduction Structural System Comparison PROJECT PROJECT Existing CIP Slab Re ‐ Designed CIP Slab Filigree Slab and OVERIVEW Analysis Description OVERIVEW with Drop Panels without Drop Panels Beam System Steel (TONS) Savings Analysis 61.99 42.10 48.00 ANALYSIS 1: ANALYSIS 1: Steel (lbs./SF) 2.81 1.91 2.25 Steel (TONS) n/a 19.90 13.99 STRUCTURAL STRUCTURAL Steel Cost $87,096.81 $59,144.32 $67,440.00 System Price/Unit Units Schedule Time Revenue Steel (lbs./SF) n/a 0.90 0.56 RE-DESIGN RE-DESIGN Concrete (CY) 1346.58 1361.11 816.67 10" CIP $979,020.00 $180 147 27 Days 37 Nights Steel Cost n/a $27,952.49 $19,656.81 Concrete Drop/Beam (in.) 13.5 0 11.5 Filigree 45 Nights $1,190,700.00 $180 147 33 Days Concrete (CY) n/a ‐ 14.53 529.92 ANALYSIS 2: ANALYSIS 2: ANALYSIS 2: ANALYSIS 2: Concrete Slab (in.) ( ) 8 10 6 Concrete Cost n/a / ‐ $6,367.53 $ $232,262.48 $ CONTROLS Concrete Cost $590,207.48 $596,575.00 $357,945.00 CONTROLS Formwork (SF) n/a 1907.95 1907.95 Formwork (SF) 46007.95 44100.00 44100.00 Formwork Cost n/a $10,493.74 $110,468.44 Formwork Cost $253,043.74 $242,550.00 $142,575.30 ANALYSIS 3: ANALYSIS 3: Slab Duration (Days) n/a 17 23 Slab Duration (Days) 44 27 21 GREYWATER GREYWATER Total Cost Savings n/a $32,078.70 $362,387.72 Total Cost $930,348.02 $898,269.32 $567,960.30 Location Factor Adjustment 0.94 0.94 0.94 Location Factor Adjustment 0.94 0.94 0.94 CRITICAL CRITICAL Adjusted Total Cost Savings Adjusted Total Cost $874,527.14 n/a $844,373.16 $30,153.98 $340,644.45 $533,882.68 INDUSTRY INDUSTRY RESEARCH: RESEARCH: “GREENING” “GREENING” OF HOTELS OF HOTELS CONCLUSION CONCLUSION Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT Conclusion & Recommendation � Filigree slab and beam system is the recommended PROJECT OVERIVEW system. ANALYSIS 1: � Smaller overall depth which is key in designing clearance heights STRUCTURAL and piping and plumbing work. RE-DESIGN Analysis 2: Mechanical Controls Analysis 2: Mechanical Controls � Construction is 33 days faster which enables an early opening. ANALYSIS 2: ANALYSIS 2: CONTROLS � Saves the owner $340,644.45 in construction cost. ANALYSIS 3: � Add additional revenue of $1.2 million within the first 45 nights. GREYWATER CRITICAL INDUSTRY RESEARCH: “GREENING” OF HOTELS CONCLUSION Julia Phillips Senior Thesis 2008 Construction Management RESIDENCE INN by MARRIOTT RESIDENCE INN by MARRIOTT Julia Phillips Senior Thesis 2008 Construction Management 3