Monday, June 29, 2009

#1 Define Work by Major Task

The construction process is "just one thing after another"

All the things that make up a construction process can be be defined as tasks;

-Site clearing
-Foundation system
-Structural system
-Exterior wall systems
-Roofing Systems
-Interior finishes,...

Each task can be further broken down to sub-tasks within a larger task and the tasks can be allocated to the individual trades and subcontractors.

Construction cost estimates may be defined by the intended end use;
-Preliminary cost estimate for owner budget development, usually prepared by the design architect or engineer based on historical square foot cost data for similar projects and may be presented as range high-average-low.

-Design development cost estimate for owner budget development, prepared by the design architect or engineer, or by the owners construction manager, or estimating consultant; based on historical cost data and applied to the project for construction type, components and quantities.

-General Contractor bid proposal, prepared by the general contractors bid team and or an estimating consultant; using industry historic cost data, subcontractors and suppliers preliminary proposals to the GC, and the general contractors in house historical cost data on similar projects. The general contractor will then apply multiplier factors to the cost estimate to account for overhead costs, profit target, and bid competition.
Adjustment may be made up or down for known history within the industry of working with the particular owner, architect, engineer, construction manager, regulator authority,...

-The General Contractor upon being awarded the contract will prepare a preliminary project schedule and schedule of values for review by the owner project team which may include architect, engineer and construction manager. In preparing the bid the GC will have blocked out a preliminary schedule and reviewed sub-tasks within the schedule with subcontractors and suppliers for availability of resources.

The assignment for Monday July 13, 2009 due by email midnight Sunday July 12, 2009;

Assume all work is by subcontractor, use the drawing set and Construction Specifiers Institute Format to break the work down to major tasks and sub-tasks within those major tasks, then allocate work tasks to sub contractors, then create a scope of work for each subcontractor. Insert the task information into MS Project 2007 and assign dependencies to each task.

In the following week we will use National Construction Cost Estimator 2007 to assign cost values to those tasks including; workforce, materials and components, equipment, overhead, profit and competitive advantage.

You can work with a partner, but submit your work separately and identify your partner.


Read Construction Project Management 3rd Edition by Gould and Joyce Chapter 9 and 10.

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.