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Guide for Pavement-Type Selection (2011) / Chapter Skim
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Appendix A - Alternative-Preference Screening Matrix Example
Pages 43-50

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From page 43...
... In Scenario 2, the agency priorities include not only the overall cost-effectiveness of an alternative but also the anticipated M&R and future user costs. In addition to cost considerations, the agency emphasizes continuity issues related to surface types of adjacent pavement sections.
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From page 44...
... Cost Considerations Construction/ Materials Considerations Other Considerations • Initial costs • Life-cycle costs • User costs • Future M&R costs • Roadway/lane geometrics • Continuity of adjacent pavements • Continuity of adjacent lanes • Availability of local materials and experience • Traffic during construction • Noise • Subgrade soils • Local preference • Safety considerations • Conservation of materials/energy • Stimulation of competition • Maintenance capability • Future needs • Experimental features Table A4. Grouping of economic and noneconomic factors.
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From page 45...
... Group Factor Percent Weights within a Group Percent Weights across Groups Scenario 1 Scenario 2 Scenario 3 Scenario 1 Scenario 2 Scenario 3 Cost considerations Initial costs 30 20 30 18 12 18 Life-cycle costs 50 30 50 30 18 30 User costs 5 10 5 3 6 3 Future rehabilitation costs 10 25 10 6 15 6 Future maintenance costs 5 15 5 3 9 3 Group total 100 100 100 60 60 60 Construction / materials considerations Roadway/lane geometrics 0 0 0 0 0 0 Continuity of adjacent pavements 30 60 30 6 21 2 Continuity of adjacent lanes 0 0 0 0 0 0 Availability of local materials and experience 30 10 30 6 4 2 Traffic during construction 40 30 40 8 11 2 Group total 100 100 100 20 36 5 Other considerations Noise 10 10 25 2 1 9 Subgrade soils 20 20 0 4 1 0 Local preference 10 10 15 2 1 5 Safety considerations 15 15 25 3 1 9 Conservation of materials/energy 10 10 10 2 1 4 Stimulation of competition 25 25 0 5 1 0 Maintenance capability 10 10 0 2 1 0 Future needs 0 0 0 0 0 0 Experimental features 0 0 25 0 0 9 Group total 100 100 20 7 36100 Table A7. Weighing scenarios and individual factor weights.
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From page 46...
... Noneconomic Factors Alternative 1 Alternative 2 Alternative 3 Roadway/lane geometrics No issues No issues No issues Continuity of adjacent pavements Different but no issues Same as adjacent pavements Different but no issues Continuity of adjacent lanes No issues No issues No issues Availability of local materials and experience No issues No issues No issues Traffic during construction Easy to accommodate Somewhat difficult to accommodate Easy to accommodate Noise Moderate noise levels Increased noise levels Lower noise levels Subgrade soils No major issues Some issues No major issues Local preference No preference No preference Some preference Safety considerations Good skid resistance but poor reflectivity Good reflectivity but poor skid resistance Better reflectivity and skid resistance Conservation of materials/ energy More recycling possibilities Little recycling possibilities More recycling possibilities Stimulation of competition Competition is encouraged Competition is encouraged Competition is encouraged Maintenance capability Common experience Common experience Common experience Future needs Easy to accommodate Easy to accommodate Easy to accommodate Experimental features Common technology Common technology No local experience Table A9. Comparative evaluation of noneconomic factors.
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From page 47...
... 47 Group Factor Alternative 1 Alternative 2 Alternative 3 Cost considerations Initial costs High Low Low Life-cycle costs High High High woLhgiHwoLstsocresU Future rehabilitation costs Low High Low Future maintenance costs Low High Low Construction/ materials considerations Roadway/lane geometrics No difference No difference No difference Continuity of adjacent pavements Medium-high High Medium-high Continuity of adjacent lanes No difference No difference No difference Availability of local materials and experience No difference No difference No difference Traffic during construction Medium-high Medium Medium-high Other considerations hgiHmuidem-woLmuideMesioN Subgrade soils Medium-high Medium Medium-high Local preference Medium Medium High Safety considerations Medium Medium High Conservation of materials/ energy Medium-high Low-medium Medium-high Stimulation of competition High High High Maintenance capability No difference No difference No difference Future needs No difference No difference No difference Experimental features Low Low High Table A10. Ratings of economic and noneconomic factors.
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From page 48...
... Construction/materials considerations 0.0ecnereffidoN0.0ecnereffidoN0.0ecnereffidoN0scirtemoegenal/yawdaoR Continuity of adjacent pavements 30 Medium-high 24.0 High 30.0 Medium-high 24.0 Continuity of adjacent lanes 0 No difference 0.0 No difference 0.0 No difference 0.0 Availability of local materials and experience 30 No difference 0.0 No difference 0.0 No difference 0.0 Traffic during construction 40 Medium-high 32.0 Medium 24.0 Medium-high 32.0 Group B unweighted total 100 56.0 54.0 56.0 Group C Other considerations 0.01hgiH0.4muidem-woL0.6muideM01esioN 0.61hgih-muideM0.21muideM0.61hgih-muideM02sliosedargbuS 0.01hgiH0.6muideM0.6muideM01ecnereferplacoL 0.51hgiH0.9muideM0.9muideM51snoitaredisnocytefaS Conservation of materials/energy 10 Medium-high 8.0 Low-medium 4.0 Medium-high 8.0 Stimulation of competition 25 High 25.0 High 25.0 High 25.0 0.0ecnereffidoN0.0ecnereffidoN0.0ecnereffidoN01ytilibapacecnanetniaM 0.0ecnereffidoN0.0ecnereffidoN0.0ecnereffidoN0sdeenerutuF 0.0hgiH0.0woL0.0woL0serutaeflatnemirepxE Group C unweighted total 100 70.0 60.0 84.0 Subtotals Group Weights Group Unweighted Total Group Weighted Total Group Unweighted Total Group Weighted Total Group Unweighted Total Group Weighted Total 0.630.066.540.674.050.4806snoitaredisnoctsoC.A B
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From page 49...
... Construction/materials considerations 0.0ecnereffidoN0.0ecnereffidoN0.0ecnereffidoN0scirtemoegenal/yawdaoR Continuity of adjacent pavements 60 Medium-high 48.0 High 60.0 Medium-high 48.0 Continuity of adjacent lanes 0 No difference 0.0 No difference 0.0 No difference 0.0 Availability of local materials and experience 10 No difference 0.0 No difference 0.0 No difference 0.0 Traffic during construction 30 Medium-high 24.0 Medium 18.0 Medium-high 24.0 Group B unweighted total 100 72.0 78.0 72.0 Group C Other considerations 0.01hgiH0.4muidem-woL0.6muideM01esioN 0.61hgih-muideM0.21muideM0.61hgih-muideM02sliosedargbuS 0.01hgiH0.6muideM0.6muideM01ecnereferplacoL 0.51hgiH0.9muideM0.9muideM51snoitaredisnocytefaS Conservation of materials/energy 10 Medium-high 8.0 Low-medium 4.0 Medium-high 8.0 Stimulation of competition 25 High 25.0 High 25.0 High 25.0 0.0ecnereffidoN0.0ecnereffidoN0.0ecnereffidoN01ytilibapacecnanetniaM 0.0ecnereffidoN0.0ecnereffidoN0.0ecnereffidoN0sdeenerutuF 0.0hgiH0.0woL0.0woL0serutaeflatnemirepxE Group C unweighted total 100 70.0 60.0 84.0 Subtotals Group Weights Group Unweighted Total Group Weighted Total Group Unweighted Total Group Weighted Total Group Unweighted Total Group Weighted Total 4.620.444.050.480.630.0606snoitaredisnoctsoC.A B
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From page 50...
... Construction/materials considerations 0.0ecnereffidoN0.0ecnereffidoN0.0ecnereffidoN0scirtemoegenal/yawdaoR Continuity of adjacent pavements 30 Medium-high 24.0 High 30.0 Medium-high 24.0 Continuity of adjacent lanes 0 No difference 0.0 No difference 0.0 No difference 0.0 Availability of local materials and experience 30 No difference 0.0 No difference 0.0 No difference 0.0 Traffic during construction 40 Medium-high 32.0 Medium 24.0 Medium-high 32.0 Group B unweighted total 100 56.0 54.0 56.0 Group C Other considerations 0.52hgiH0.01muidem-woL0.51muideM52esioN 0.0hgih-muideM0.0muideM0.0hgih-muideM0sliosedargbuS 0.51hgiH0.9muideM0.9muideM51ecnereferplacoL 0.52hgiH0.51muideM0.51muideM52snoitaredisnocytefaS Conservation of materials/energy 10 Medium-high 8.0 Low-medium 4.0 Medium-high 8.0 Stimulation of competition 0 High 0.0 High 0.0 High 0.0 0.0ecnereffidoN0.0ecnereffidoN0.0ecnereffidoN0ytilibapacecnanetniaM 0.0ecnereffidoN0.0ecnereffidoN0.0ecnereffidoN0sdeenerutuF 0.52hgiH0.5woL0.5woL52serutaeflatnemirepxE Group C unweighted total 100 52.0 43.0 98.0 puorGslatotbuS Weights Group Unweighted Total Group Weighted Total Group Unweighted Total Group Weighted Total Group Unweighted Total Group Weighted Total 0.630.066.540.674.050.4806snoitaredisnoctsoC.A B
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Key Terms

  • cost considerations
  • user costs
  • safety considerations
  • screening matrix
  • noneconomic factors

  • future maintenance
  • future rehabilitation
  • unweighted total
  • maintenance costs
  • evaluation factors

  • rehabilitation costs
  • experimental features
  • factor weights
  • subgrade soils
  • considerations initial

  • cycle costs
  • costs low
  • safety features
  • individual factor
  • common experience

  • noise levels
  • noise mitigation
  • agency goals
  • skid resistance
  • matrix worksheet

  • future user
  • future costs
  • lower initial
  • cost estimate
  • individual factors


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