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Chiang, Y and Cheng, E W L (2009) Perception of Financial Institutions toward Financing PFI Projects in Hong Kong. Journal of Construction Engineering and Management, 135(09), 833–40.

Chou, C, Caldas, C H, O’Connor, J T, Sroka, A W and Goldman, G K (2009) Identification of Decision Drivers for the Strategy of Incorporating Utility Relocations into Highway Construction Contracts. Journal of Construction Engineering and Management, 135(09), 812–8.

Choudhry, R M, Fang, D and Lingard, H (2009) Measuring Safety Climate of a Construction Company. Journal of Construction Engineering and Management, 135(09), 890–9.

De Marco, A, Briccarello, D and Rafele, C (2009) Cost and Schedule Monitoring of Industrial Building Projects: Case Study. Journal of Construction Engineering and Management, 135(09), 853–62.

Dhakal, S, Mrawira, D and Rankin, J (2009) Effect of Specifications Type on the Quality of Paving Contracts in New Brunswick. Journal of Construction Engineering and Management, 135(09), 801–11.

  • Type: Journal Article
  • Keywords: Highway and road construction; Asphalt pavements; Quality control; Specifications; Contracts; Variance analysis;
  • ISBN/ISSN: 0733-9364
  • URL: https://doi.org/10.1061/(ASCE)CO.1943-7862.0000064
  • Abstract:
    Construction specifications are used by transportation agencies to define the client’s requirements of the final product. The primary motivation of adopting the newer end result specification (ERS) or performance related specification over method-based specification (MBS) is to reduce clients’ costs, encourage contractors’ innovation, and improve overall quality. However, some transportation agencies have been reluctant to fully implement ERS due to lack of demonstrated evidence on whether they achieve comparable level of quality or performance. This paper investigates if the specification type has any effect on quality. The case study presented is based on data from New Brunswick Department of Transportation (NBDOT) from years 2003–2007. NBDOT generally uses ERSs to call paving contracts equal to or larger than 8,000 t. MBSs are used for all other smaller paving contracts. The most prevalent indicator variables for accepting asphalt paving jobs in North America [that is, percent theoretical maximum relative density, asphalt binder content, air voids, voids in mineral aggregates, percent passing 4.75 mm (No. 4), and 75 μm (No. 200) sieves] were investigated. Statistical analysis was performed to compare the deviation of the quality indicator variables from their respective job mix formula values for paving projects that used MBS or ERS. ANOVA results revealed that there were no significant differences between the qualities achieved from the two specification types. Also, no significant differences were found from within-specification comparisons over the time frame examined. Given the possible cost advantages from agency’s point of view, the flexibility of the contractors to innovate and the fact that this study demonstrates quality is not compromised, there is an opportunity for agencies to expand or fully adopt the use of ERS specifications.

El-adaway, I H and Kandil, A A (2009) Contractors’ Claims Insurance: A Risk Retention Approach. Journal of Construction Engineering and Management, 135(09), 819–25.

Golden, S K and Skibniewski, M J (2009) Immigration and Construction: The Makeup of the Workforce in the Washington, D.C., Metropolitan Area. Journal of Construction Engineering and Management, 135(09), 874–80.

Hartmann, A, Ling, F Y Y and Tan, J S H (2009) Relative Importance of Subcontractor Selection Criteria: Evidence from Singapore. Journal of Construction Engineering and Management, 135(09), 826–32.

Kiziltas, S and Akinci, B (2009) Contextual Information Requirements of Cost Estimators from Past Construction Projects. Journal of Construction Engineering and Management, 135(09), 841–52.

Le, T, Caldas, C H, Gibson, G E and Thole, M (2009) Assessing Scope and Managing Risk in the Highway Project Development Process. Journal of Construction Engineering and Management, 135(09), 900–10.

Lu, M and Lam, H (2009) Transform Schemes Applied on Non-Finish-to-Start Logical Relationships in Project Network Diagrams. Journal of Construction Engineering and Management, 135(09), 863–73.

Minchin, R E (2009) Fall and Rise of the Largest Construction Manager-at-Risk Transportation Construction Project Ever. Journal of Construction Engineering and Management, 135(09), 930–8.

Mitropoulos, P, Cupido, G and Namboodiri, M (2009) Cognitive Approach to Construction Safety: Task Demand-Capability Model. Journal of Construction Engineering and Management, 135(09), 881–9.

Odeh, I, El-Rayes, K and Liu, L (2009) Field Experiments to Evaluate and Control Light Tower Glare in Nighttime Work Zones. Journal of Construction Engineering and Management, 135(09), 911–9.

Poveda, C A and Fayek, A R (2009) Predicting and Evaluating Construction Trades Foremen Performance: Fuzzy Logic Approach. Journal of Construction Engineering and Management, 135(09), 920–9.