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Published byClaribel McBride Modified over 9 years ago
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CVE 4070 Construction Engineering Risk Management Prof. Ralph V. Locurcio, PE
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Views of risk taking…
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What is risk??? An outcome different from what you expected or estimated… Or… different from what you bid!
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Sources of risk in construction… Construction operations are hazardous Labor capacity, capability, competence… Subsurface conditions; physical factors Contractual provisions; timing, LDs… Economic conditions; prices, labor… Political & public; new laws, opposition
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Basic premise… All risks accrue to the owner unless assigned by contract to another party In assigning risk to another they must be (a) able to assess the risk fairly, (b) competent to do the task, and (c) result in a better solution
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Risk allocation… at start Owner DesignerBuilder Not yet involved
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Risk allocation… traditional Owner DesignerBuilder
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Risk allocation… design-build Owner Designer+ Builder
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Risk Management Tools Best Value procurements Two stage bid process Contractor helps finalize design Incorporates VE Risk Management Risk identification Analysis Response
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Pareto Principle 80/20 rule… States that 80% of the value comes from 20% of the activities. Therefore, we need a method to focus on the 20% of the activities that have the most influence on the outcomes. And… we should avoid the 80% of activities that produce little gain
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Best Value Process Understand Client Requirements & Intent Brainstorm Possible Areas for Adding Value Find & Include Experts in Key Areas Develop Options With Pros & Cons ID Preferred Solution & Obtain Needed Design Info Present to Exec Team For Decision Preliminary Design Detailed Design Development Plans & Specs Final Review By Exec Team Final Approval By Client Construction Contractor
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Risk identification Identify areas of risk intensity 1.Buildability, logistics, health & safety 2.Environmental, permits 3.Cost environment Develop risk registers 1.Catalog all risk factors 2.Assign responsibility to team members
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Risk analysis Use decision & simulation theory Quantify maximum effect of each risk Identify probability of occurrence Determine economic impact of each Determine impact of combinations
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Risk response Plan mitigation strategies Specific action to be taken Avoidance, sharing, protection, etc. Accountable team member Account for inter-relationships Account for multiple risk scenarios
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Construction Risk Management Avoidance Retention Insurance Education & Training Exemption Clauses Risk sharing Protection Clauses Retention Money Liquidated Damages Rescind contract Contingencies
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Basic risk management-1… Build a Risk Allocation Matrix Identify all potential risk of loss Assign to Owner, Contractor or Designer Quantify your potential loss Develop a risk management strategy
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Basic risk management-2 Management strategies… Avoid the potential loss Transfer the risk Share risk with another firm Mitigate the potential for loss Recover any unavoidable loss Claim Insurance Litigation
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Basic risk management-3 Keys to allocation of risk… Must be a reward for any risk assigned Asignee must be able to control risk Must produce “best” solution Must have financial capability Must follow terms assigned
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Risk Management Strategies Avoidance Transfer or Sharing Mitigation Insurance Recovery
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Avoidance… Careful estimating & bidding Study the contract terms Study the owner’s style & record Study limits of insurance Prior planning for construction Examine the plans, specs & conditions Examine the contract requirements Examine the site for unknowns & hazards Examine each process & plan your method
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Transfer or sharing… Reduce source & size of risk Use the contract terms General conditions Plans & specs Negotiate new terms May not work with government Change strategic approach Merger or joint venture with another firm Hire subcontractor for high risk work Purchase additional insurance
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Mitigation… Good planning & communication Quality control processes Use/acquire the right skills Use/acquire the right equipment Use your experience wisely Act promptly if the unexpected occurs
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Insurance… Covers unexpected situations Situations beyond your control Your track record is important Cost is a factor Do not overuse
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Recovery… Read the contract Good record keeping… especially impacts Follow correct procedures Demonstrate mitigation efforts Make a convincing presentation Attempt settlement at lowest level Seek legal help
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Cost recovery 101 (a)… Detailed Work Breakdown Structure (WBS) for estimating List & code each activity & duration Establish start & finish dates & labor hours List materials required & procurement lead Labor hours for shop drawings & submittals Have accounting code for each of above
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Cost recovery 101 (b)… Develop change/claim spreadsheet Use bid data as base line List all estimated activities & costs in a WBS Calculate “actual” duration & costs for WBS Establish % triggers to identify problems Notify owner’s rep immediately of problems
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Cost recovery 101 (c)… Use data to analyze source of problem Defective plans & specs Differing site conditions Interruption of work flow Unusual weather conditions Delay in receiving EI or submittal response Problems with labor Bad bid
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Cost recovery 101 (d)… Read the contract Begin mitigation immediately to minimize loss Stay within contractor’s authority Determine risk allocation for each problem Comply with all notification requirements Request contract change when required Establish new activity code for all added work Track cost of new work Quantify delay to other work
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Pyramid Cost Estimate-1… =SUM(E8/F8+G8*E8+H8* E8)*B8 =SUM((E8/F8*I8)+(G8*E8*J8+10)+(H8*E8*K8+ 10))B8 Labor CostConst Laborers(L)Labor Rate Time (Note1)($/day)Labor Days S/ U Man- days L/da yProd Sup erMgtLSMCost Planning 550S37,675500.8.1.02$5$15$30$240,625 Master Plan 400S27,400500.8.1.02$5$15$30$175,000 Site Selection 500S53,000500.5.1.02$5$15$30$312,500 Build Camp 200U84,5332500.6.02.004$2$10$20$184,667 Demob Camp 150U63,4002500.6.02.004$2$10$20$138,500 Hire Workforce 1800S48,960200.8.1.01$5$15$30$325,800 Train Team 1 500S65,5001000.8.05.01$2$10$20$170,000 Train Team 2 700S91,7001000.8.05.01$2$10$20$238,000 Train Team 3 650S85,1501000.8.05.01$2$10$20$221,000 Prep Const Site 550U929,86710000.6.02.004$3$12$25$2,948,000 Const Core 3000U 12,144,00 020000.5.02.004$3$12$25$38,100,000
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Pyramid Cost Estimate-2… Trim Exterior 2400U2,428,8005000.5.02.004$3$12$25$7,656,000 General Design 2000S137,000500.8.1.02$5$15$30$875,000 Design Structure 520S17,810250.8.1.02$5$15$30$118,950 Open Quarry 200U33,8131000.6.02.004$3$12$25$110,800 Cut Blocks 2400U971,5202000.5.02.004$3$12$25$3,091,200 Cut Trim 2000U809,6002000.5.02.004$3$12$25$2,576,000 Interior Design 1000S34,250250.8.1.02$5$15$30$228,750 Room Constr 2500U2,138,3335000.6.04.004$3$12$25$7,025,000 Int Finishes 2200U842,9142500.7.1.004$4$14$30$4,022,857 Final Inspection 200S27,2001000.8.1.01$8$20$50$254,000 Demob Const Site 400U161,9202000.5.02.004$2$10$20$350,400 Bury Pharoah 100S13,2111000.9.2.01$10$30 $10 0$183,111 Labor Sub-total 21,247,55 7 $69,546,160
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Pyramid Cost Estimate-3… =SUM(B34*E34 ) Stone Cost #stone s T/ston eTons $/To n =SUM(F34*G3 4) Cut core 2,556,98 83 7,670, 964$20$153,419,280 Place Core- Note(3) 2,556,98 83 7,670, 964$12$92,051,568 Cut trim 45,9700.522,985$10$229,850 Place Trim-Note(3) 45,9700.522,985$45$1,034,325 Stone Sub-total $246,735,023
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Pyramid Cost Estimate-4… =SUM(D8+D9+D10+D13+D14+D15+D16+D20+D2 1+D25+D28+D30) Support Cost#man days $/man-day Skilled Workers(S) 638,856 $10 $6,388,561 Unskilled Workers(U) 20,608,701 $4 $82,434,804 Support Sub-total 21,247,557 $88,823,365 Grand Total $405,104,548
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