tower cranes

Mazen Mohamad Tarek TOWER CRANES

CONTENTS

• INTRODUCTION• TYPES OF CRANES• DIFFERENT COMPONENTS OF CRANE• ERECTION PROCEDURE• UTILITY TO PROJECT / SITE• DISADVANTAGES • STATISTICAL ANALYSIS• CONCLUSION & CONSENSUS

What Are Tower Cranes?

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

• Ancient Crane• Mobile Crane• Telescopic Crane• Tower Crane• Loader Crane• Stacker Crane• Gantry Crane• Overhead Crane

Tower Cranes

• Fixed to the ground • Horizontal boom is balanced

asymmetrically • Short arm carries a

counterweight of concrete blocks • Long 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

BoomCounter Weight

Swing Ring

Tower Footing

Fixed Tower

Climbing Tower

BoomCounter Weight

Swing Ring

Trolley

Tower Footing

Fixed Tower

Climbing Tower

Operator's Cabin

BoomCounter Weight

Swing Ring

Trolley

Tower Footing

Fixed Tower

Climbing Tower

Operator's Cabin

Boom

Load Line

Counter Weight

Swing Ring

Trolley

The base

Mast / Fixed Tower

Swing ring

Boom

Counter Weight

Erection of Boom

The Operator’s Cabin

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.

UTILITY TO PROJECT

• TIME SAVING MACHINE• MULTIPURPOSE IN USE• HEAVY DUTY• HIGH PERFORMANCE• EASE EVEN IN CRITICAL SITUATION• CAN BE TRANSFERRED FROM ONE PROJECT

TO ANOTHER• WHEN IDLE , NO OVERHEADS• OPTIMUM UTILISATION OF RESOURCES

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

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

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

•Thank you …..,,