Warm Up Notes What is an Assignment? What’s the objective? When is it due? How much effort? What criteria? E-mail protocol Subject: CVEN 349 - ??? ??? CyberDude Attachments: DOC, XLS, EXE, VBA, VBS, … … Attachments: PDF (Adobe), txt, csv, mdb … …
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Warm Up Notes What is an Assignment? What’s the objective? When is it due? How much effort? What criteria? E-mail protocol Subject: CVEN 349 - ??? ???
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Warm Up Notes What is an Assignment?
What’s the objective? When is it due? How much effort? What criteria?
of “back of the envelope” Plans, Specifications, and Estimates (PS&E)
Develop conceptual solutions to selected local problems.
Learning Objectives Students should be able to develop
a “back of the envelope” feasibility study for a selected, simple project to include” Gross Work Breakdown Structure Order of Magnitude Quantity
Estimates Order of Magnitude Cost Estimates
RAT 02.1: Take out a piece of paper, put your
name on it, Take 2-minutes to write: … the three things you should be able
to calculate for a “back of the envelope” estimate according to the previous slide.
Now hand it to the front of the room in 30 seconds, starting now.
Some Examples of Local Projects
Renovation of Ross Street (good starter)
PS&E for a new CE Building (good example)
Cost and Revenue projection for WERC Parking Garage (good example)
Enhanced Parking and Access to the Main Campus (too complex)
Ross Street:Project Development Plan
Need – facility for opposing traffic. At least two wide lanes for busses to
pass each other. Mix of other traffic – emergency
vehicles?, Access to parking lots? Traffic circulation?
Local traffic is NOT a consideration.
In Class Exercise What tasks (work break-down
structure) are required to complete the job? Write down list as individuals As pairs refine the lists As groups of four refine lists Report results.
As Individuals Estimate the following
Construction quantities: Demolition of existing pavement (30-
ft by 1,500-ft, for a first SWAG) Repair of utilities (FTE-Years) Sub base (average 4-ft deep) Base course (average 1-ft deep) Pavement with curb and gutter
(average ¾ -ft deep)
Estimate the following: Direct Construction Costs (labor &
materials): Demolition of existing pavement Repair of utilities Sub base Base course Pavement with curb and gutter
Fringe Benefit Costs (15% of Direct) Indirect Costs (150% of Direct) Profit and Contingency (It depends upon
risk factors but let’s say 10-25%)
Rough Cost Calculation Example
Cost Item CostDirect Costs (Labor and Materials) $1,000,000Plus: Fringe Benefits @ 15% $1,150,000Plus: overhead @ 150% $2,875,000Plus: Profit @ 10% $3,162,500Total Charge for the work $3,162,500
Warning: I asked a slightly more complex problem on the Final Exam and 30% of the class missed it. Since I asked about the same problem on all three exams, not being able to answer it cost some students a letter grade.
Basic Assumptions TAMU Owns the property. There are no significant
environmental issues. Construction will occur over the