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Accidents during construction projects also increasesproject cost.
Indirect cost of insurance, inspection and regulationare increasing rapidly due to accidents
So the project manager try to execute the project with
out any major accidents
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STEEL ERECTION
SCAFFOLDINGEXCAVATION
ROOF WORK
MACHINES
PAINTING
DEMOLITION
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Contact with power lines
Overturns
Falls
Mechanical failures
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Instability unsecured load load capacity exceeded ground not level or too soft
Lack of communication
Lack of training
Inadequate maintenance or inspection
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1. Operators
2. Persons at Crane Site
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Make sure the craneoperator can see the:
Rated Load
Capacities Operating Speeds
Special Hazard
Warning orInstruction
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Refer to shipping ticket or otherdocumentation
Ensure lift calculations are correct
Ensure load is within load chart rating forboom length and load radius of crane
Crane is rated by the maximum weight it
will lift at a minimum radius and minimumboom length the further from its centerpoint, the less it will lift
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Not level
Wind
Side loads
Condition of wheels
Lifting over the side
Limits of wire rope, slings and lifting devices
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Improper loads or speeds can result
in the tipping of the crane
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Unguarded
Chain Drive
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Make sure broken windows or otherobstructions do not prevent the operator
from seeing
Broken Window
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Dont stand under suspended loads
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Replace rope if there are3 or more broken wires in one strand
in one laywear exceeds 1/3 of diameter.
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Stay clear from power lines at least 10 feet
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Level the crane and ensure support surface is firm and ableto support the load
Contact power line owners and determine precautions.Know the location and voltage of overhead power lines.
Know the basic crane capacities, limitations, and job siterestrictions, such as the location of power lines, unstablesoil, or high winds.
Make other personnel aware of hoisting activities.
Barricade areas within swing radius.
Ensure proper maintenance and inspections. Determine safe areas to store materials and place
machinery.
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Scaffolding is a temporary structure used to supportpeople and material in the construction or repair ofbuildings and other large structures. It is usually amodular system of metal pipes (termed tubes in
Britain), although it can be made out of othermaterials. Bamboo is still used in some Asian countries
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In construction industry per year -5,00,ooo
Related to scaffolding 10,000
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Supervisors are responsible to facilitate and/or provideproper instruction to their workers on protectionrequirements and training Determine the type ofscaffold required
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1. Ensure grounding on a firm and level base.
2. Maintain the established minimum clearances from allpower lines.
3. Provide a safe access ladder.
4. Ensure scaffold has a platform perimeter handrail.
5. Anchor or tie afree standing scaffold according tolegislation.
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Minimize tools, material and debris on the platform.
Ensure a hand line with a tool bag for tools is utilized.
When working at 3m (10 ft.), fall protection systemmust be used.
Follow scaffold safe work procedure step by step.
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Must be able support its own weight and 4 times
the maximum intended load. Scaffolds must be designed by a qualified person.
They must and built and loaded within design.
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Scaffolds must havebase plates, evenwhen setting on aconcrete floor.
Also, the lack of abase plate coulddamage the scaffoldleg.
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Scaffold legs must beset on base plates andadequate mudsills.
There is no base plate
and the scrap plywoodis not adequate.
The scaffold framecould penetrate the
plywood.
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Scaffolds shouldnever be set onbricks, masonry
blocks, etc. These are not
structural elementsand could crush
under the scaffoldload
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Hydro-mobile
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Frames
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Workers must be trained inNature of electrical, fall, and falling object
hazardsCorrect procedures for protection of above Proper use of the scaffold Load capacities of scaffolds
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Must have an 18
platform.
Must have guardrails orother fall protection
BAD!
GOOD!
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lack of oxygen Inhalation of toxic materials
Fire
Moving machinery near the edge of theexcavation can cause a collapse
Accidental severing of underground utilitylines
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Excavating is one of themost hazardousconstruction operations
Most accidents occur in
trenches 5-15 feet deep There is usually no
warning before a cave-in
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Employees should be protected from
cave-ins by using an adequately designed
protective system
Protective systems must be able to resist allexpected loads to the system
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A well-designed protective systemCorrect design of sloping and benching systems Correct design of support systems, shield systems,and other protective systems
PlusAppropriate handling of materials and equipment
PlusAttention to correct installation and removal
EqualsProtection of employees at excavations
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Shield - can be permanent or portable. Also
known as trench box or trench shield.
Shoring - such as metal hydraulic, mechanical ortimber shoring system that supports the sides
Sloping - form sides of an excavation that are
inclined away from the excavation
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Slope or bench the sides of theexcavation,
Support the sides of the
excavation, or Place a shield between the
side of the excavation and thework area
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Cave-in Hazard
This excavation has
inadequatesupport posts andegress access
Inadequate protective system
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A trench shield wasbuilt around this work
area
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Using hydraulic jacks theoperator can easily drop thesystem into the hole
Once in place, hydraulicpressure is increased to keepthe forms in place
Trench pins are installed in
case of hydraulic failure
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Hazardous ConditionsThe weight and
vibrations of thecrane make this a
very hazardous
condition.
They should notbe working under
this crane.
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When water is presentin an excavation it isextremely hazardous
to enter
Note that these workers are notwearing hardhats to protect themfrom materials falling into thetrench
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Test excavations more than 4feet before an employee entersthe excavation for:
Oxygen deficiency
High combustible gasconcentration
High levels of otherhazardous substances
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A stairway, ladder, orramp must be presentin excavations that are 4or more feet deep, and
within 25 feet of theemployees
This ladder does not meet therequirements of the standard
The ladder should extend 3 feetabove the excavation
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Safe Working Procedure - Excavations
Business Activity Managers
Safety Managers
Managing Director
Employees
Duty Holders
Ensuring compliance.
Providing professional safety advice.
Complying with the requirements.
Responsible for
Co-operating with the requirements.
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New bolt not
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4 bolts minimum percolumn
Repair, replacement or
field modification ofanchor bolts must beapproved by thestructural engineer of
recordNew bolt notmade!= 2 anchorbolts
tested!
l l
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Column splice
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All must be protected at heights greater than 2
stories or 30 feet, including connectors anddeckers
Between 15 and 30 feet: Fall protection requiredfor all with exceptions for:
Deckers in controlled decking zone (CDZ) and
Connectors Connectors must be provided and wear equipment
necessary to be able to be tied-off, or be provided with othermeans of fall protection
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Means a system used toarrest an employee in afall from a working level.
System consists of ananchorage, connectors, abody harness and mayinclude a lanyard,
deceleration device,lifeline or suitablecombination of these.
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Safety Nets
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Beamer
BEAMER IN USE
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BEAMER IN USE
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THANK YOU
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