CONSTRUCTION SAFETY PPT – VIBy AVINASH KUMAR GUPTA

VEHICLES

•reversing blind (don’t depend upon warning hooter)

•work near overhead power lines

•carrying unauthorized passengers

•poor maintenance

•overloading

•site congestion

•poor traffic layout

•uneven ground/ debris

CONSTRUCTION SAFETY PPT - VIPRECAUTIONS

– all drivers to have proper National License

– training

– go up & down the slop, rather than across it where ever practicable

– avoid overhead power lines & steep slopes while selecting routes

– speed limits clearly displayed

– speed limits to be reduced for adverse site condition/ work in progress

– unattended vehicle should have engine switched off

– tipping bodies should be lowered

– safety boots during loading/ unloading

Goalposts to compel drivers to lower crane and excavator jibs, andavoid contact with overhead power lines

INSPECTION OF VEHICLES

• Daily – water, oil, fuel, lights, inflation of tyre and breaks

• (WOFLIB)

• Week - Check by fitter

• periodic - service centre of manufacturer

OVERTURNING

• use barriers, fixed stops

• construction vehicles are unstable & liable to overturn

• not to turn at excessive speed

• protection from falling objects

• if vehicle begins to topple over remain in the seat and do not try to jump clear

LOADING

• loads should be evenly distributed, properly secured and should not project

• projections to be shown by attachment of flays

• uneven load restrict in loss of control

• body of tipper lorry always be lowered

REMEMBER

• If your vehicle begins to topple over, remain in the seat and do not try to jump clear

• Keep your vehicle tidy and the cab free from tools and material which might obstruct the controls.

• Keep to speed limits.• Do not carry unauthorized passengers.• Do not drive across a slope.

Movement of Materials• Cranes

(a)weight, size & type of load

(b)Maximum road or reduces requirement

(c)Restriction - overhead powerline, state of the site, type of ground

(d)Need of trained operators/ --------

• Erections

-skilled workers

–follow manufactures instruction

SIGNALING

• must be > 18 years

• trained & experienced

• signaling system (use telephone)

• hand signed should be clear & distinct

Hand signals to crane drivers should beclear and distinct, and should follow a

recognized code or system

OVERLOADING• mark with safe working load

• operator to estimate the load correctly

• safe working load with every radius in derricking job

– not allow the load to swing

– don’t overlok the indicator

SAFE LOAD INDICATOR• job cranes should have automatic safe

load indicator

• warn by hooter

• take into account the effect of wind/ soft ground conditions

• raise the load and stop – guess the load than continue

• Don’t overlook the indicator

Maintenance

– wire ropes

– brakes

– safety devices

Mobile cranes

• liable to overturn or soft, wet ground, during vainer

• Adequate clearance for crane’s jib/ boom

• 4m from overhead power lines

• sufficient counter weight

• no drain pipes beneath the outrigger pads

Tower Cranes• prevent overturning

• anchored to the ground, security counterweighted

• load to be lifted vertically

• avoid large area loads during winds

• specify maximum wind

• free to rotate @ 3600

Mobile cranes should operate withoutriggers extended to prevent

overturning

Cranes: The need for a safety hook fitted with a latch to prevent displacement of loads is explained to workers

Good Hoists

Erection

• erection, extension, dismantling by a specialist/ competent supervisor

• tower/ mast to be securely filled to building/ scaffold & maintained vertical

• Maximum height of 18m or as specified by manufacturer

GOOD HOISTSENCLOSURE

• at the ground level of ht of lm

• suitable gates

• remainder to be enclosed with wire mesh

• gates should be filled at every platform level

• use safely devices in the in the event of failure of hoist rope or driving gear

GOOD HOISTS

• Loads

– safe carrying load to be marked

– not to be overloaded

– loose bricks not be carried in open hoist platform

– no one to be allowed to ride on the platform

– carriage of persons through lifts

GOOD HOISTS

Testing & examination

• tested & examined after installation

• weekly checks to be recorded

REMEMBER

• If you cannot see the load all the time, you need a signaller.

• Beware of exceeding the safe working load when trying to free a stuck load.

• Never climb up the tower or get onto the boom while the crane is in use.

• Make sure the load you are lifting is properly secured