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Process of Laying of PQC in Rigid Pavement Functioning of Automatic Dowel Bar insertion system

Modification of Automatic Dowel Bar Insertion System in Slipform Paver for laying of Rigid Pavement Siliguri Islampur Road Project – WB 07. Process of Laying of PQC in Rigid Pavement Functioning of Automatic Dowel Bar insertion system

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Process of Laying of PQC in Rigid Pavement Functioning of Automatic Dowel Bar insertion system

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  1. Modification of Automatic Dowel Bar Insertion System in Slipform Paver for laying of Rigid Pavement Siliguri Islampur Road Project – WB 07

  2. Process of Laying of PQC in Rigid Pavement • Functioning of Automatic Dowel Bar insertion system • Previous arrangement of Dowel Bars in KARP /Allahabad Project • New Arrangement as the design of WB 07 Project • Modification done for the New Design • Cost saving

  3. Process of Laying

  4. Function of Automatic Dowel Bar insertion

  5. Previous arrangement of Dowel Bars in KARP /Allahabad Project

  6. New Arrangement as the design of WB 07 Project

  7. View of Dowel Bar Unit

  8. Salient Features of the Modification • Width of Paver increased from 8.50 To 8.75 Meter. • No of Insertion Forks increased from 24 to 43 • No of Vibrators increased from 19 to 23 • Bottom template spacing modified from 24 slots to 43 slots • Electric Circuit modified to accommodate extra Vibrators • Arrangement of Vibrators modified for uniform Vibration • Distributor trolley modified from 550 mm to 500 mm length of dowel bar . • Tie Bar System modified to accommodate the Bar of 630 mm against the Previous size of 400 mm • One set of Tie Bar inserter removed and position of another changed as per new specifications

  9. Cost Saving • Cost quoted by the Paver Manufacturer M/s WIRTGEN India (Pvt) Ltd Rs 48.00 Lac • Cost incurred by the Project for in house modification Rs 5.48 Lac • 3.20 Lac extra for procurement of Two Vibrators from the Manufacturer. • Net saving - 40.00 Lacs

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