Download - Bulding Services Slide Show
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Prepared by :NUR AMALINA BINTI HAMID
17DKA11F1 55Noor azidawati binti jaafar
17dka11f1 11
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To pull to or knock down a building
The act or process of wrecking or destroying,
especially destruction by explosives.
Dismantling, razing, destroying or wrecking anybuilding or structure or any part there of by
preplanned and control the methods.
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Aiming at minimizing the risk to persons and damage to
properties, health and safety of site personnel and
damage to the environment.
Its because Aesthetic, Human health, Human safety, to
build new buildings, Renovation, Structure problems,
Environment (near slopes), Population density, Adjacent
buildings,Traffic
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Site survey Site preparation &mobilization
Decommissioning
Soft strippingRecycle & Reuse
EnvironmentMonitoring
DemolitionWaste management& Recycling
Site clearance
Pre demolition process
Post demolition phase
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Site Survey Site Preparation & Mobilization
Normally carried out in the form of
desk studies and on site investigation.
The survey is done to obtain
information as well as to buildfamiliarization with actual site
condition. Aspects that are survey are
with respect to access routes,
topographical features, ground
conditional, location and types of
existing services as well as adjacentproperty.
The site is prepared and
conditioned to receive demolition
works. This activity includes the
erection of safety fencing andhoarding, site offices as well as other
facilities. Mobilization comprises of
aspects such as conducting
temporary works, erecting, scaffolds
and safety signages, diversion and
protection existing services & propertyas well as establishment of plant and
machinery.
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Decommissioning Recycle & Reuse
Is done to bring the structure fromits fully operational state to one
where all charged systems are
terminated or reduced to the lowest
hazardous level. This includes the
disconnection of electrical , gas
water, plumbing andtelecommunication cables.
Soft stripping materials arecollected and sorted to reuse, sold or
recycled.
Soft Stripping Environmental Controlling
Is done to remove all non-structure
items such as fixtures, fittings,
windows, door, roof tiles and ceilings.
Initial water and air quality as well
as noise and vibration levels are
monitored by a term of specialist.
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Demolition
Is executed with the use of heavy
equipment and machinery depending
on technique selected, to break or
demolish the structure into smaller
fragments for disposal or recycling.
Environmental Monitoring
Water & air quality as well as noise
and vibration levels are monitoredduring the works to ensure the are not
exceed the allowable limits.
Waste Management & Recycling
Is carried out to properly managed
all waste & debris generated from
demolition process. The management
cover areas such as hazardous
wastes storage, handling and
transportation, dumping as well as
burning. These aspects are planned
and monitored to avoid possible
environmental contamination and
pollution.
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Demolition by Manually
Demolition of buildings or structure by hand-held toolssuch as electric or pneumatic breakers.
Chutes may be used to discharge debris into a vehicle or
hopper. Foundations would normally be grubbed up by excavation
machines.
This techniques is most often use in small scaleddemolition operations.
In larger projects, it is employed to primarily weakens thestructured before heavier equipment is brought in.
Strict safety precautions in terms of working conditions forexamples secure platforms and scaffolding must alwaysconsidered and checked.
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Hammer Wrecking Bar
Cutters
ShovelsBreaker Hammer
Diamond Cutter Saw
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Machinery Component
Crane & Demolition Ball
Pneumatic Impact Tools
Explosive
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Crane and Demolition Ball
Most structures can beknocked down by balling
where destruction is caused
by the impact energy of the
steel ball suspended from a
crane.
Balling can be done by twoways which are by hoisting
the ball and releasing it to
drop vertically or winching the
ball towards the machine and
releasing it to swing inline
with the jib.
Floors should bedemolished by dropping the
ball on the highest remaining
floor and allowing the debris
should be removed regularly
to prevent excessive weight
accumulating on the lowerfloors.
Walls or columns can be
demolished either by swinging
the ball in line with the
stationary jib, using the drag
rope, or by slewing the jib. Theball should not swing by
derricking the jib.
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Demolition Machine
Demolition Ball
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Pneumatic Impact Tools
Use impact energy of thehammer, driving the piston
rapidly to crushing the block or
building
This tool works on basic
principal of movement induced
by the expansion ofcompressed air.
The advantages offered arethat it can be easily mounted
on light carriers, requires
lesser accessories as well
as maintenance, works
better in confined spaces
due to its weight-power ratioand its suitable for
underwater usage.
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Pneumatic impacts tools
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Explosive
Normally use for removing alarge building
May effect, safety of people
nearby and damage to
surrounding structures
The fastest way to dodemolition works
Not required in town area.
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Explosives method
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Warning sign ages
Protective enclosures
Prevent authorized entry or trespassing during the
period of demolition.
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