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OCR for page 86
APPENDIX C Project Development Phases Source Anderson, S., K. Molenaar, and C. Schexnayder (2007a). NCHRP Report 574: Guidance for Cost Estimation and Management for Highway Projects During Planning, Programming, and Pre- construction, TRB. http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_rpt_574.pdf C-1

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C-2 Procedures Guide for Right-of-Way Cost Estimation and Cost Management Transportation Need Development Process COST ESTIMATING AND COST ESTIMATING MANAGEMENT Needs/ Deficiencies Scope Types/Major Parameters Complexity Location/Size Determine Estimate Basis(Scope/ Location) Planners Input from Traffic 3rd Parties Pavements Input from Structures Disciplines ROW / RES Environmental Historical Data Construction Utilities Prepare Base Estimates Determine Risk/ Contingency PLANNING Review Total Estimates Legend Input Step Planning Database (Projects) Cost Prioritization Loop Estimates Document Milestone Obtain Appropriate Approvals Phase Approved Planning (Projects) Estimates Determine Estimates Release Planning (Projects) LONG Communication Estimates RANGE Approach PLAN To Project Development Process Figure C-1. Cost estimation practice and cost estimation management during planning (NCHRP Project 8-49, Phase I).

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Appendix C C-3 Project Development COST ESTIMATING AND COST ESTIMATING MANAGEMENT Process PROGRAMMING (Pre-Design) Project Scoping 5-25% Design Project Complexity Update Estimate Basis(Scope/ Location) STIP Historical Data Input from 3rd Parties Market Macro Conditions Environment Prepare Base Estimate Traffic Roadway Legend Structures Input from ROW / RES Disciplines Environmental Input Construction Utilities Perform Risk Step Analysis (Set Contingency) DESIGN Database Review Total Cost Estimate Document Milestone Obtain Appropriate Approvals Decision Communicate Baseline Project Estimate Estimate Approval To Final Design Figure C-2. Cost estimation practice and cost estimation management during programming (NCHRP Project 8-49, Phase I).

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C-4 Procedures Guide for Right-of-Way Cost Estimation and Cost Management Project Development COST ESTIMATING AND COST ESTIMATING MANAGEMENT Process ESTIMATE MANAGEMENT PROGRAMMING Project Milestone (Pre-Design) 15 ,30,60 ,80% De sign Project Co mplexity Update Estimate Basis(Scope/ Location) Historical Data Input from 3rd Parties STIP Market Macro Conditions Design Development /Project Conditions Environment Prepare Base Traffic Estimate Roadway Structures Input from ROW / RES Legend Disciplines Environmental Monitor Project Construction Scope/Conditions Perform Risk Input Analysis Utilities NO IMPACT (Set Contingency) NO Potential Step Change? YES Review Total Cost Database Estimate Estimate Potential DESIGN Impact -Cost & Time Document Obtain Appropriate NO IMPACT Approvals NO Approve Milestone Change? YES Decision Project Estimate Adjust Cost Estimate Phase Is Estimate on YES No Change Budget? Change Scope/Adjust Budget NO Communicate Change To Final Design Approval Figure C-3. Cost estimation practice and cost estimate management during preliminary design (NCHRP Project 8-49, Phase I).

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Appendix C C-5 Figure C-4. Cost estimating and cost estimation management during final design (NCHRP Project 8-49, Phase I).