demolition equipment/technique available

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High Reach Demolition Excavator

Girish Kumar SinghSchool Of Planning and Architecture, New Delhi

High Reach Demolition Excavator Methods To Demolish The BuildingDetonation method Cut And Take Down Method Concrete Recycler. Manual Demolition With the help of machines Wrecking Ball CraneHigh Reach Demolition Excavator Concrete Evaporator


Explosive Demolition

High Risk FactorTime TakenProduce Distortion ExpensiveChances of error Need of experts Error may leads toNo demolitionLoss of life'sQuick Demolition


Wrecking Ball Crane

Produce Repeated VibrationLess Control On Moving BallMore force required Cant be used on Steel structure

Waving action of ball leads to heavy lossBall is heavy so give good impact but also become uncontrollable Different ball sizes to be used on different structures


CUT AND TAKE DOWN METHOD


Concrete Recycler

Cut Concrete With the help of water pressureSimultaneously it suck the Washed concreteIt is the most energy Efficient.These machines are fully automated.It only can be used for Concrete Structure



First used in 1970 in UKNo distortion to the surroundings Less Risk Factor Work From the ground Different attachments for various worksQuick and reliable Controlled Demolition


Specifications

57 m NON WORKING ZONELatest excavator can reach upto 57m.All demolition equipment's like shear, hammer can be attached to this

55m


Methodology Adopted

Side By Side Demolition First side of the building is demolished to make the structure weak.Then in the circular pattern it is repeated and then the middle structure is demolished. Top to bottom and side by side demolition take place and remains of building is excavated during the demolition


Methodology Adopted Top to Bottom This process is used where the structure is small in width.First the top portion is demolished Completely . Then top to bottom method is adopted in order to complete the demolition of the building.Mainly it is adopted on the structure which upto 15m in height.Widely used to demolish the water tank and watch towers




Critical Situation When Building Height is more than the max. reached height of Excavator Small excavator is installed on the roof and then building is demolished by the excavator from top to down.

High Reach Demolition Excavator Hammer

ATTACHMENTS

GrapplesMultiprocessor

Pulverizers

Buckets

Shear


Grapples are the ideal material handling option for Hydraulic ExcavatorsMax. Handling Weight 2614.5 KgForce Produced 2.4 sh.ton

Hammer Produce a Repeated a Impulse to break the structure Impact energy is 12000ft-lbf275-450 Blows per minutesGrappleHammer


MULTI-PROCESSORS

Secondary pulverizers process already-demolished concrete, separating out rebar and reducing concrete to small, ready-to-recycle chunks.

Primary Pulverizer jaws demolish and reduce concrete in a single step, separating rebar from concrete and eliminating the need for secondary processing before recycling.


Shear jaws cut and reduce angle iron, channel iron, beams, pipe, rebar, cable and tires.

Tank Shear jaws make short work of storage tanks and plate steel. Specially-designed jaws produce straight, smooth cuts on barges, railway cars and grain, water, oil and fuel tanks.


Universal jaws are ideal for precision demolition, sectioning concrete and down-sizing concrete for crushers. Cleanly cuts segments of concrete with rebar cut flush to the concrete.


PULVERIZERS

Pulverizers for Cat Excavators are highly effective work tools for processing concrete in a single step.

Closing force tip 187tonClosing force rebar cutter 387tonsCapacity Concrete thickness35.4 in


SHEARProduce tremendous amount of force to cut the steel as well as concrete structure Closing force 850 ton on tipClosing force 1058 tons at rebar


BucketIt have a large spread areaUsed to apply force on a large surfaceAlso used to grab waste on the site


Case Study Old Myer Building (corner of William and Murray Streets) Horseshoe Bridge, Perth, Western AustraliaTotal of 13 stories Tower120,000-square-foot is the total area.CAT 385 CL Ultra High Demolition (UHD) Excavator was used.12 week time taken in full demolition.


THANK YOU

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