TOWER CRANESTOWER CRANES

TOPICSTOPICS INTRODUCTIONINTRODUCTION TYPES OF CRANESTYPES OF CRANES DIFFERENT COMPONENTS OF CRANEDIFFERENT COMPONENTS OF CRANE ERECTION PROCEDUREERECTION PROCEDURE UTILITY TO PROJECT / SITEUTILITY TO PROJECT / SITE DISADVANTAGES DISADVANTAGES STATISTICAL ANALYSISSTATISTICAL ANALYSIS CONCLUSION & CONSENSUSCONCLUSION & CONSENSUS

What Are Tower Cranes?What Are Tower Cranes?

A A cranecrane is a tower or derrick equipped with cables is a tower or derrick equipped with cables and pulleys that is used to lift and lower materials.and pulleys that is used to lift and lower materials.

Ancient CraneAncient Crane Mobile CraneMobile Crane Telescopic CraneTelescopic Crane Tower CraneTower Crane Loader CraneLoader Crane Stacker CraneStacker Crane Gantry CraneGantry Crane Overhead CraneOverhead Crane

Tower CranesTower Cranes

Fixed to the ground Fixed to the ground Horizontal boom is balanced Horizontal boom is balanced

asymmetrically asymmetrically Short arm carries a counterweight of Short arm carries a counterweight of

concrete blocks concrete blocks Long arm carries the lifting gearLong arm carries the lifting gear

Tower FootingTower Footing

Tower Footing

Fixed Tower

Tower Footing

Fixed Tower

Climbing Tower

Tower Footing

Fixed Tower

Climbing Tower

Swing Ring

Tower Footing

Fixed Tower

Climbing Tower

Swing Ring

Tower Footing

Fixed Tower

Climbing Tower

Counter Weight

Swing Ring

Tower Footing

Fixed Tower

Climbing Tower

Boom

Counter Weight

Swing Ring

Tower Footing

Fixed Tower

Climbing Tower

Boom

Counter Weight

Swing Ring

Trolley

Tower Footing

Fixed Tower

Climbing Tower

Operator's Cabin

Boom

Counter Weight

Swing Ring

Trolley

Tower Footing

Fixed Tower

Climbing Tower

Operator's Cabin

Boom

Load Line

Counter Weight

Swing Ring

Trolley

The BaseThe Base

Mast / Fixed TowerMast / Fixed Tower

Swing RingSwing Ring

BoomBoomCounter WeightCounter Weight

Erection of BoomErection of Boom

The Operator’s CabinThe Operator’s Cabin

Load Carried by the Boom Load Carried by the Boom 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

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)

ABC

D

Radius of the Boom

Location of the Tower Crane

Tower Crane

Rohan TapovanRohan Builders Pvt. Ltd. (India)Gokhale Nagar,Near Mendhi FarmSenapati Bapat Marg,Pune.

TIME SAVING MACHINETIME SAVING MACHINE MULTIPURPOSE IN USEMULTIPURPOSE IN USE HEAVY DUTYHEAVY DUTY HIGH PERFORMANCEHIGH PERFORMANCE EASE EVEN IN CRITICAL SITUATIONEASE EVEN IN CRITICAL SITUATION CAN BE TRANSFERRED FROM ONE CAN BE TRANSFERRED FROM ONE

PROJECT TO ANOTHERPROJECT TO ANOTHER WHEN IDLE , NO OVERHEADSWHEN IDLE , NO OVERHEADS OPTIMUM UTILISATION OF RESOURCESOPTIMUM UTILISATION OF RESOURCES

UTILITY TO PROJECTUTILITY TO PROJECT

DISADVANTAGESDISADVANTAGES

CUMBERSOME TO ERECT & DISMANTLE.CUMBERSOME TO ERECT & DISMANTLE. HIGH INITIAL COST FOR ERECTION AS HIGH INITIAL COST FOR ERECTION AS

WELL AS DISMANTLING.WELL AS DISMANTLING. SKILLED OPERATORS ARE REQUIRED.SKILLED OPERATORS ARE REQUIRED. IF IN DEFECTIVE SESSION , HAMPERS THE IF IN DEFECTIVE SESSION , HAMPERS THE

SCHEDULE.SCHEDULE. MAINTANANCE IS DIFFICULT. MAINTANANCE IS DIFFICULT. SOMETIMES CREATE SAFETY PROBLEMS.SOMETIMES CREATE SAFETY PROBLEMS. LIMITED TO PROJECTS WITH LARGE AREAS.LIMITED TO PROJECTS WITH LARGE AREAS.

STATISTICAL ANALYSISSTATISTICAL ANALYSIS

Sr.Sr.

NoNo..

PARTICULARSPARTICULARSWITH WITH CRANCRANEE

WITH WITH LIFTSLIFTS

11 CONCRETING @ 7000 Sq.ft 10 Hr10 Hr 25 Hr25 Hr

22 LABOURS REQUIRED FOR 15-2515-25 45-6045-60

33 QUANTITY OF CONCRETE 6 Bag6 Bag 1 Bag1 Bag

44 R/F SHIFTING WITHIN SITE 1-1.5 Hr1-1.5 Hr 8-10 Hr8-10 Hr

55ERECTION - DISMANTLING COST

1,00,001,00,0000

25,00025,000

66½ YEARLY MAINTAINANCE COST 30,00030,000 5,0005,000

77 WASTAGE OF CONCRETE 0.25 %0.25 % 3%3%

Thank You . . Thank You . . ..