During the bid process the GC's estimator will have prepared a quantity take-off of the construction documents.
Estimating Software including;
-Means from McGraw-Hill
-National Construction Cost Estimator from Craftsman
Provide installed assembly, material, component, equipment and workforce unit costs. The publishers base unit cost on data collected from construction industry bids and actual costs, adjusted by location with updates at each log-on to their system.
More sophisticated applications of estimating software can integrate with construction documents containing BIM tags.
For this class using the Airport Parking Facility drawings, we will be taking a less sophisticated approach;
Measure drawings to produce assembly quantities;
-Square Foot site area
-Square Foot disturbed area
-Linear foot "super silt fence"
-Linear foot temporary security fence
-Square Foot site entrance "rip-rap"
-Cubic Yard, 6" deep vegetable soil to be removed (recycle yard less than 15 miles in Trainer PA)
-Cubic Yard cut and fill on site material
-Cubic Yard imported soil material (recycled material from Trainer PA)
-Linear foot storm sewer trench cut and fill
-Linear foot storm sewer and bedding
-Quantity new manhole
-Quantity modify existing manhole
-Linear foot electric conduit and trench cut and fill
-Number of light pole footing, and light poles
-Linear foot straight curb and linear foot curved curb
-Square foot prefab structure pads
-Square foot paved area, stone base, asphalt base, asphalt wear coat, striping
-Linear foot permanent fence
The gate, entry booth and gate control system will typically be supplied and installed by a control system subcontractor, but the GC will provide power, trenching and pads.
Please review General Conditions costs in National Construction Cost Estimator, for cost that are project costs but do not represent a direct cost for construction assemblies, these costs will be reported under Mobilization and may be prorated over the proposed contract period and will include temporary facilities such as site trailer, WC, temporary utilities, installation and removal.
Storm Water Management during construction is a contract requirement and will include erection, maintenance and removal. While this item is a temporary facility it will be costed and included on the payment voucher as a separate line item.
Assume all engineering testing is by the owners team.
Coming next;
#5 MS Project 2007 assign major tasks and sub-tasks
#6 Task cost estimate; workforce, materials, equipment.
#7 Task cost estimate; overhead, profit, competitive advantage
#8 Project bid cost estimate
#9 Schedule of values /Project Schedule
#10 Payment voucher/cash flow
Wednesday, July 8, 2009
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Construction Management 2
CM2 will focus on scheduling, quanitity take-off and construction cost estimating from the perspective of the General Contractor.
Scheduling using MS Project 2007;
Current editions of MS Office Professional edition contain MS Project 2007.
MS Project 2007 is also available on some computers in the A&D building, check with PhilaU OIT for access.
Quantity Take-Off;
We will be using full size drawing, for the take-off section including; cut and fill calculations, stormwater management and environmental remediation.
Construction Cost Estimating;
Information from the quantity take-off will be used for construction cost estimating using "National Construction Estimator 2007 from Craftsman"
Project Cash Flow;
Data from the cost estimating program with overhead and profit factors will be used with the Schedule to inform cash flow, line of credit, gross profit and net profit.
Review impact of project delay from; owner, arch/eng, GC, regulatory, weather, industrial action,....
Review impact of project change order on cash flow and overhead and profit.
Scheduling using MS Project 2007;
Current editions of MS Office Professional edition contain MS Project 2007.
MS Project 2007 is also available on some computers in the A&D building, check with PhilaU OIT for access.
Quantity Take-Off;
We will be using full size drawing, for the take-off section including; cut and fill calculations, stormwater management and environmental remediation.
Construction Cost Estimating;
Information from the quantity take-off will be used for construction cost estimating using "National Construction Estimator 2007 from Craftsman"
Project Cash Flow;
Data from the cost estimating program with overhead and profit factors will be used with the Schedule to inform cash flow, line of credit, gross profit and net profit.
Review impact of project delay from; owner, arch/eng, GC, regulatory, weather, industrial action,....
Review impact of project change order on cash flow and overhead and profit.
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