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Narrow Pavement Widening - Equipment

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Prepared by David Zuehlke of ROADTEC, this presentation showcases equipment produced for the purpose of widening highway shoulders. Please remember to cite this research if the information you find here is used.

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Narrow Pavement Widening - Equipment

  1. 1. Equipment for TXDOT Shoulder Widening David Zuehlke, Roadtec Inc.
  2. 2. AGENDA Introduction Historical Equipment Current Equipment Challenges
  3. 3. Family of Companies
  4. 4. CHATANOOGA, TN Manufacturers Road – 216,500 sq. ft. – Company HQ New equipment manufacturing Riverside Drive Location – 54,009 sq. ft. – Parts, Rebuild, and Used Equipment • 359 Employees Total
  5. 5. ROADTEC PRODUCT LINES
  6. 6. Historical – Custom Equipment
  7. 7. • Old Option – none in Texas • RX-60C now RX-900 • Soft Shoulders / Deeper Cuts • Economic Feasibility • Lane Closure SIDE-CUTTER ATTACHMENT
  8. 8. • Limited number • Buggy Utilization 2000 vs. Now SHUTTLE BUGGY WIDENER
  9. 9. ROADTEC MILLS
  10. 10. MILLING CONCEPT
  11. 11. AUTOMATED GRADE & SLOPE
  12. 12. RX-400e
  13. 13. CUTTER OPTIONS 1. 12” Max Depth 2. Standard 4’ Fixed Width 3. Variable Cutter System – VCS
  14. 14. VCS 1 Housing – 3 Widths 24” Cutter 36” Cutter 48” Cutter Variable Cutter System - VCS
  15. 15. AUTOMATED GRADE & SLOPE
  16. 16. One Person Operation Exceptional visibility and controls allow the machine to be operated by one person
  17. 17. RX-400e • Right Hand Flush Cut • Rear Flush Cut • No legs in cut • Minimal lane intrusion
  18. 18. RX-400e 12” Deep Cut - 24” Wide
  19. 19. RX-400 District Usage Atlanta Beaumont Bryan Houston Lufkin Paris Waco
  20. 20. RX-600e
  21. 21. RX-600e • 6’ 7” or 7’ 2” Cutter • VCS Capable with 24” Cutter 36” Cutter 48” Cutter
  22. 22. Real County – FM 336
  23. 23. Grade depth set on the left side Slope set on the right Slope matched to existing grade Real County – FM 336
  24. 24. Real County – FM 336
  25. 25. SHOULDER MILLING ADVANTAGES • Clean Joints & Sub-Grade Surface • Accurate sub-grade depth and slope • Full Recovery and Recycle RAP & Aggregates • More productive – faster construction cycle • One machine operation allows for tighter job footprint
  26. 26. SHOULDER WIDENING CHALLENGES / ISSUES
  27. 27. SHOULDER WIDENING CHALLENGES / ISSUES • Contractor Work Volume & Timing • In-consistent widths among Districts - Example 2’ 6” vs. 2’, 3’, or 4’ - Max Depth 12” • Most common size mill cut width is 6’ 7” followed by 7’ 2” • Under/Over cut vs. specialty size cuts
  28. 28. THANK - YOU QUESTIONS

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