Looking only at Figure 20.4, what are the potential costs or bid risks for the GC, and what are the risks for the project owner?

Figure 20.4

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Project: Bin Spec 1 24100 Demolition 2 31113 Form Elevated Slabs Dunn Lumber Description 32100 Reinforcement Steel 33000 Pump Concrete 33500 Finish Slabs 3 39000 Shotcrete 4 42200 Interior Garage CMU 51000 Misc. and Structural Steel 16.1 54100 Exterior Metal Stud Framing 5 64100 Casework Waterproofing 6.1 71400 6.2 71800 Traffic Coating 7 72100 Insulation 13.2 87100 16.2 92100 17 96100 City Construction Company Final Subcontractor Bid Day List 8 74619 Metal Siding 9 74623 Wood Siding and 'Rain Shield' 10 75300 Roofing and Flashing 11 78100 12 79200 13.1 81100 14 83300 15 84100 Fireproofing Caulking and Firestopping Buy Doors and Frames Garage & Retail Roll-up Doors Windows and Storefront Buy Door Hardware GWB and Interior Framing Tenant Area Finishes/Floors 18 99113 Exterior Painting 101400 Signage 102800 Toilet Accessories 104400 Fire Extinguishers 108213 Louvers 19 111300 Loading Dock Equipment 20 118123 Window Washing Equipment 21 129313 Bike Racks 22 142400 Elevators 23.1 210000 Fire Protection (Design-build) 23.2 220000 Plumbing 23.3 230000 HVAC 24 260000 Electrical 25 312300 Mass Excavation 26 314000 Shoring (Design-build) 27.1 311300 Pavement 28 321400 Pavers. 27.2 321713 Pavement Striping 29 323113 Temporary Site Fence 28 329000 Landscape and Irrigation 30 330000 Site Utilities 31 334119 Temporary Dewatering Total Subcontract Bids Bid 472,000 0 0 0 0 813,300 36,000 0 w/bin 16.2 w/bin 17 1,200,000 w/bin 6.1 w/bin 16.2 1,466,000 w/bin 8 523,000 450,000 37,000 233,290 381,800 3,627,740 244,440 1,800,800 655,000 w/bin 16.2 0 0 0 0 75,000 200,000 88,088 1,222,950 1,210,000 1,350,000 Estimator: Paul Jacobs Est. #: + or - Revised 2,788,000 3,380,900 1,950,000 1,920,200 728,600 250,000 47,400 62,400 803,000 319,990 188,000 $28,524,898 ($10,000) 1 Subcontractor Nuprecon w/Directs w/Directs ΝΑ w/Directs w/Directs BB Shot S&J Masonry w/Directs Dunham Division Nine Rain Gear Rain Gear Dunham McKinville McKinville ACB Roofers Cementech City Plug Klose Door Co Stanley Hurley Glass Klose Door Co Dunham T.I. Allowance Dunham w/Directs w/Directs Alabama Plumbing Holiday Mechanical Homes Electric (10,000) 1,940,000 Haus Construction BDM Systems Dean Company Adobe w/Directs w/Directs EZ Lift Bid Allowance Specialties, Inc. High Rise, Inc. Fire West City Plug City Plug Adobe Graystone Bid Allowance