Tower crane Basics

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Basics of Tower Crane Details

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Tower crane Basics

  1. 1. TOWER CRANES
  2. 2. TOPICS <ul><li>INTRODUCTION </li></ul><ul><li>TYPES OF CRANES </li></ul><ul><li>DIFFERENT COMPONENTS OF CRANE </li></ul><ul><li>ERECTION PROCEDURE </li></ul><ul><li>UTILITY TO PROJECT / SITE </li></ul><ul><li>DISADVANTAGES </li></ul><ul><li>STATISTICAL ANALYSIS </li></ul><ul><li>CONCLUSION & CONSENSUS </li></ul>
  3. 3. What Are Tower Cranes? <ul><li>A crane is a tower or derrick equipped with cables and pulleys that is used to lift and lower materials. </li></ul><ul><li>Ancient Crane </li></ul><ul><li>Mobile Crane </li></ul><ul><li>Telescopic Crane </li></ul><ul><li>Tower Crane </li></ul><ul><li>Loader Crane </li></ul><ul><li>Stacker Crane </li></ul><ul><li>Gantry Crane </li></ul><ul><li>Overhead Crane </li></ul>
  4. 4. Tower Cranes <ul><li>Fixed to the ground </li></ul><ul><li>Horizontal boom is balanced asymmetrically </li></ul><ul><li>Short arm carries a counterweight of concrete blocks </li></ul><ul><li>Long arm carries the lifting gear </li></ul>
  5. 15. The Base
  6. 16. Mast / Fixed Tower
  7. 17. Swing Ring
  8. 18. Boom Counter Weight
  9. 19. Erection of Boom
  10. 20. The Operator’s Cabin
  11. 21. Load Carried by the Boom Tower Crane at the Site: Maximum unsupported height - 141 feet (43 meters) Maximum reach - 164 feet (50 meters) Maximum lifting power – 6.61 tons (6 metric tons), Counterweights – 17.6 tons (16 metric tons) Sr. No. Distance from the Mast ( in meters) Load Carrying Capacity ( in Metric Tonnes) 1 10m 6 2 20m 4 3 30m 3 4 40m 2
  12. 23. <ul><li>TIME SAVING MACHINE </li></ul><ul><li>MULTIPURPOSE IN USE </li></ul><ul><li>HEAVY DUTY </li></ul><ul><li>HIGH PERFORMANCE </li></ul><ul><li>EASE EVEN IN CRITICAL SITUATION </li></ul><ul><li>CAN BE TRANSFERRED FROM ONE PROJECT TO ANOTHER </li></ul><ul><li>WHEN IDLE , NO OVERHEADS </li></ul><ul><li>OPTIMUM UTILISATION OF RESOURCES </li></ul>UTILITY TO PROJECT
  13. 24. DISADVANTAGES <ul><li>CUMBERSOME TO ERECT & DISMANTLE. </li></ul><ul><li>HIGH INITIAL COST FOR ERECTION AS WELL AS DISMANTLING. </li></ul><ul><li>SKILLED OPERATORS ARE REQUIRED. </li></ul><ul><li>IF IN DEFECTIVE SESSION , HAMPERS THE SCHEDULE. </li></ul><ul><li>MAINTANANCE IS DIFFICULT. </li></ul><ul><li>SOMETIMES CREATE SAFETY PROBLEMS. </li></ul><ul><li>LIMITED TO PROJECTS WITH LARGE AREAS. </li></ul>
  14. 25. STATISTICAL ANALYSIS Sr. No. PARTICULARS WITH CRANE WITH LIFTS 1 CONCRETING @ 7000 Sq.ft 10 Hr 25 Hr 2 LABOURS REQUIRED FOR 15-25 45-60 3 QUANTITY OF CONCRETE 6 Bag 1 Bag 4 R/F SHIFTING WITHIN SITE 1-1.5 Hr 8-10 Hr 5 ERECTION - DISMANTLING COST 1,00,000 25,000 6 ½ YEARLY MAINTAINANCE COST 30,000 5,000 7 WASTAGE OF CONCRETE 0.25 % 3%
  15. 26. Thank You . . .

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