Construction Planning, Equipment, CHAPTER TRUCKS AND ...

1 Construction planning , Equipment, and Methods Sixth Edition CHAPTER . TRUCKS AND HAULING. EQUIPMENT. A. J. Clark School of Engineering department of Civil and Environmental Engineering 10 By Dr. Ibrahim Assakkaf ENCE 420 Construction Equipment and Methods Spring 2003. department of Civil and Environmental Engineering University of Maryland, College Park CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 1. ENCE 420 Assakkaf INTRODUCTION. TRUCKS are hauling units . TRUCKS have high travel speeds when operating on suitable roads, provide relatively low hauling costs. TRUCKS provide a high degree of flexibility permitting modifications in the total hauling capacity of a fleet and adjustments for changing haul distances.

2 1. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 2. TRUCKS . ENCE 420 Assakkaf CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 3. ENCE 420 Assakkaf INTRODUCTION. Most TRUCKS may be operated over any haul road for which the surface is sufficiently firm and smooth and on which the grades are not excessively steep. 2. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 4. ENCE 420 Assakkaf INTRODUCTION. Some TRUCKS now in use are designated as off-highway TRUCKS because their size and total load are larger than that permitted on public highways. These TRUCKS are used for hauling materials on large project sites, where their size and costs are justified.

3 CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 5. ENCE 420 Assakkaf TRUCKS CLASSIFICATION. TRUCKS may be classified according to a number of factors including: 1. The size and type of engine- gasoline, diesel, butane, propane 2. The number of gears. 3. The kind of drive-two-wheel, four- wheel, six-wheel, etc. 3. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 6. ENCE 420 Assakkaf TRUCKS CLASSIFICATION. 4. The number of wheels and axles and arrangement of driving wheels. 5. The method of dumping the load- rear-clump, side-dump. 6. The class of material hauled-earth, rock, coal, ore, etc. 7. The capacity, in tons or cubic yards.

4 CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 7. ENCE 420 Assakkaf TRUCKS . Distance is the principal factor in selecting haul units. Feet 4. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 8. ENCE 420 Assakkaf REAR-DUMP TRUCKS . Rear-dumps TRUCKS are used when: 9 The material to be hauled is free- flowing or has bulky components. 9 The hauling unit must dump into restricted locations or over the edge of a bank or fill. 9 Maximum maneuverability in the loading or dumping area is required. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 9. ENCE 420 Assakkaf Highway rear-dump 5. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No.

5 10. ENCE 420 Assakkaf BOTTOM-DUMP TRUCKS . Bottom-dumps TRUCKS are used when: 9 The material to be hauled is free- flowing. 9 There are unrestricted loading and dump sites. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 11. ENCE 420 Assakkaf BOTTOM-DUMP TRUCKS . 6. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 12. ENCE 420 Assakkaf Tractor with bottom dump trailer CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 13. ENCE 420 Assakkaf Bottom dump trailer deposits a wind row of material. 7. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 14. ENCE 420 Assakkaf Articulated TRUCKS CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No.

6 15. Articulated TRUCKS ENCE 420 Assakkaf Can operate over bad ground. 8. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 16. ENCE 420 Assakkaf HAULING EQUIPMENT. These are specialized TRUCKS for hauling a fleet of equipment from one point to another. 9 General Construction 9 Military 9 Services CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 17. ENCE 420 Assakkaf TRUCKS to move the fleet 9. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 18. ENCE 420 Assakkaf Special trailers for heavy loads CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 19. ENCE 420 Assakkaf 10. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No.

7 20. ENCE 420 Assakkaf Service truck CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 21. ENCE 420 Assakkaf TIRES. Tires are about 35%. of a truck's operating cost. Overload a truck and you abuse the tires. 11. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 22. TIRES. ENCE 420 Assakkaf Tires are designed for a wide range of applications. Section 20 CAT Handbook CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 23. ENCE 420 Assakkaf The Terex Titan, CAT is the world's working on a largest truck at 340-ton truck. 350-ton was designed around the tires. 12. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No.

8 24. They are ENCE 420 Assakkaf CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 25. ENCE 420 Assakkaf Safety 13. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 26. ENCE 420 Assakkaf CAPACITY OF DUMP. TRUCKS . There are three methods of expressing the capacities of TRUCKS and wagons: 1) by the load which it will carry, expressed gravimetrically in tons. 2) by its struck volume (cu yd). 3) by its heaped volume (cu yd). CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 27. TRUCK CAPACITY. ENCE 420 Assakkaf 14. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 28. ENCE 420 Assakkaf CAPACITY OF DUMP. TRUCKS .

9 The struck capacity of a truck is the volume of material which it will haul when it is filled level to the top of the sides of the body. The heaped capacity is the volume of material, which it will haul when the load is heaped above the sides. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 29. ENCE 420 Assakkaf TRUCK CAPACITY. Manufacturer's specification sheets will list both struck and heaped capacities. STRUCK. - material measured straight across the top of the body. 15. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 30. ENCE 420 Assakkaf TRUCK CAPACITY. 2. 1. HEAPED. - based on a 2:1 slope above hauler bodies.

10 CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 31. ENCE 420 Assakkaf Articulated TRUCKS Retainer plate to increase load capacity. 16. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 32. ENCE 420 Assakkaf CAPACITY OF DUMP. TRUCKS . The heaped capacity will vary with the height and angle at which the material may extend above the sides. Wet earth or sandy clay may be hauled with a slope of about 1: 1. Dry sand or gravel may not permit a slope greater than about 3:1. CHAPTER 10. TRUCKS AND HAULING EQUIPMENT Slide No. 33. ENCE 420 Assakkaf PERFORMANCE. CAPABILITIES OF TRUCKS . The productive capacity of a truck or wagon depends on the size of its load and the number of trips it can make in an hour.