procurement management

WEIGHING SYSTEMS

CATEGORIES OF WEIGHING SYSTEMS• Portable wheel or axle weighers• On-board weighing system• Single axle weighbridge• Full length plate weighbridge• Part length weighbridge

TYPES OF WEIGHBRIDGE• Pit mounted weighbridges• Surface weighbridges• Portable weighbridges• Concrete weighbridges

PROJECT PLANS - OPTION 1

On-Board Weighing System

Axle Transducer Truck Weigh Indicator

DIN Radio Mount Dash Mount

Air Pressure Transducer

• Enhance “Pay on Site” Approach•

WEIGHING METHOD

One-axle

Weigh-in-motion (WIM)

One-stop

PROJECT PLANS - OPTION 2• Full Plate Weighbridge Installation

• Weight indicator Embedded with Software

• Open architecture connectivity with peripherals (Options: Traffic lights, barrier gate operators, RFID or barcode card reader, photocells).

• Integration with the Existing Control System

• At maximum weight , Conveyor would change position to another truck

• Automatic number plate recognition systems

PROJECT PLANS - OPTION 2

PROJECT PLANS – cont’d

CONFIGURATION

WEIGHING SYSTEM SELECTION

PROJECT COSTING

PROJECT IMPLEMENTATION COSTCOST ELEMENTS• Acquisition of Weighbridge and its Accessories• Configuration & Installation • Implementation of System Integration• Training• Support & Maintenance (Post Implementation)

PROJECT FINANCING

1. Outsourcing2. Outright Purchase

• Design-Build-Operate (DBO)• Build-Operate-Transfer (BOT)

• Concession Period• Asset Ownership transfer at the end of

Concession Period

PROJECT IMPLEMENTATION COSTRECOMMENDATIONS

Build-Operate-Transfer (BOT) • Concession Period• Asset Ownership transfer at the end of Concession Period

(Shen, H. Li, & Q. M. Li, 2002)(Tam, 1999) (McCarthy & Tiong, 1991)

REFERENCES1. McCarthy, C., & Tiong, R. (1991). Financial and contractual aspects of build-operate-transfer projects. International

Journal of Project Management, 9, 222-227. Retrieved from http://zonecours.hec.ca/documents/H2008-1-1548617.S_11mccarthyfinancialofproposals.pdf

2. S, W. T. L. E. W. I. (n.d.). Weighbridge Terminal L.E.W.I.S. / 09, (8), 104-104.

3. Shen, L. Y., Li, H., & Li, Q. M. (2002). Alternative Concession Model for Build Operate Transfer Contract Projects. Journal of Construction Engineering and Management, 128(4), 326. doi:10.1061/(ASCE)0733-9364(2002)128:4(326)

4. Spick, M. (n.d.). Weighbridge Technology, 1-7.

5. Tam, C. (1999). Build-operate-transfer model for infrastructure developments in Asia: reasons for successes and failures. International Journal of Project Management, 17(6), 377-382. doi:10.1016/S0263-7863(98)00061-1

6.

Websites

7. http://www.scalessparesservices.co.uk/

8. http://www.parkerfarm.com/

9. http://www.hawkleygroup.com/hawkleyint/technicaloverview.shtml#s1

10. http://www.solentscales.co.uk/weighbridge.html