SAFE SYSTEMS FOR PILING OPERATIONS
TYPE & METHOD OF CONSTRUCTION OF PILE
BORED CAST-IN-SITU (BCIS) BCIS WITH CONVENTIONAL RIG
BCIS WITH ROTARY RIG
DRIVEN CAST-IN-SITU (DCIS) DCIS WITH CONVENTIONAL DP RIG
DCIS WITH BSP (PNEUMATIC) HAMMER
CONSTRUCTION OF BCIS PILES WITH CONVENTIONAL METHOD
Tripod Piling is labour intensive and physically demanding
Safety Precautions for Tripod Piling
Keep site surface clean and free from water and slurry.
Make sure legs are on hard stable ground and equally spaced.
Don't pull or drag anything, which is too heavy for you - get help.
Only trained and authorised personnel to drive dumpers and winches.
Keep well clear of tools when picking them up or laying them down.
Only authorised persons to tip shells, keep rope parallel with shell body.
Don't leave casing caps suspended - brakes do fail.
Inspect ropes regularly, cut and serve or replace when required.
At all times, stand well clear unless you have a task to do. Make sure the winchman and the operative each know what the other is doing.
Keep others clear whilst you are working the hole, protect the hole when you are not.
Backfill the empty bore - always.
Follow your Company Procedure for climbing the legs, rigging snatch blocks and using leg chains.
TEAMWORK IS SAFE WORK
Driven Piling By BSP Hammer attached with TFC 280 Crane
Driven Piling Keep clear of all loads being hoisted.
Keep hands and feet clear when pitching casings or preformed piles.
Move machine clear of pile before working on the driven unit
Never work on or under a suspended hammer, lower it or use the safety bar (monkey pin).
Always wear ear protection whilst driving is in progress. Long exposure to loud noise damages hearing for life.
Wear eye protection when plumbing, setting rake or taking sets on concrete piles. Pieces of concrete dropping from heights can seriously damage eyes.
Make sure the driver can see you, or knows what you are doing at all times.
Always use the safety harness and line when more than 2m above ground, unless you are on a fenced platform.
Don't put hands in danger when jointing piles or changing packings.
Always have a banksman when manoeuvring the rig, particularly during reversing.
Keep work area tidy avoiding trip hazards.
Use a sound wire sling when pitching piles, never use the lifting eye or hook alone.
Ensure smouldering timber does not catch fire.
Protect exposed re-bar, ie setting out pins, with cem-caps or similar.
ROTARY PILING
PILING BY HR RIG
BENTONITE PROCESSING PLANT
ITD CEMENTATION INDIA LTD
CONCRETED
PILE SHAFT
EXTRACTED
CASING
POURED
CONCRETE
TRANSIT
MIXER
DISPLACED
BENTONITEPUMPED
TO RETURN
TANK
REINF.
CAGE
RETURN &
SETTLING
TANK
DESANDER
DESANDED
BENTONITE
HYDRATED BENTONITE
STORAGE & DRAW-OFFTANK
FRESH
WATER INLET
BENTONITE
MIXING
ARRANGEMENTBENTONITE SUPPLIED
AS REQUIRED
DURING BORING
CASING EXTRACTIONPILE CONCRETINGCAGE LOWERING
PILE BORING UPTO ROCK LEVEL
UNLINED BORE
SOCKETING IN ROCK ( CHISELLING )
CHISEL
SOCKETING IN ROCK
B.P. WINCH
C.P. DERRICK
SCHEMATIC CONSTRUCTION SEQUENCE OF BORED PILES USING ROTARY RIG
BENTONITE PROCESSING PLANT
DESANDER
BENTONITE
MIXING
ARRANGEMENT
DESANDED
BENTONITE
RETURN &
SETTLINGTANK
BENTONITE
SUPPLY
INLET
FLUSHEDBENTONITE TO
TREMMIEPIPE
AIR HOSE
AIR
COMPRESSOR
UNLINED BORE
CASING
SERVICE
CRANE
UNLINED BORE
AUGER
PILE CENTRE
AUGER
ROTARY RIG TELESCOPICKELLY
FLUSHINGCAGE LOWERINGCOMPLETED
CASING DRIVING
CASING FIXING
FREE BORING FOR RIG CENTERING
SCHEMATIC CONSTRUCTION SEQUENCE OF BORED PILES USING ROTARY RIG
BORED CAST-IN-SITU PILING OPERATION
RIG POSITIONING & CENTERING
FREE BORING FOR CASING FIXING
BORED CAST-IN-SITU PILING OPERATION
CASING DRIVING
BORED CAST-IN-SITU PILING OPERATION
BORED CAST-IN-SITU PILING OPERATION
CASING DRIVING
PILE BORING
BORED CAST-IN-SITU PILING OPERATION
BENTONITE
SUPPLY
PILE BORING
BORED CAST-IN-SITU PILING OPERATION
CAGE LIFTING & LOWERING
BORED CAST-IN-SITU PILING OPERATION
CAGE LIFTING & LOWERING
BORED CAST-IN-SITU PILING OPERATION
FLUSHING
BORED CAST-IN-SITU PILING OPERATION
FLUSHING
BORED CAST-IN-SITU PILING OPERATION
Bentonite
Inlet
Flushed
Bentonite
Compressed
Air Inlet
FLUSHING
BORED CAST-IN-SITU PILING OPERATION
PILE CONCRETING
BORED CAST-IN-SITU PILING OPERATION
PILE CONCRETING
BORED CAST-IN-SITU PILING OPERATION
PILE CONCRETING
CASING EXTRACTION
BORED CAST-IN-SITU PILING OPERATION
ROTARY PILING
Always ensure rig is working on a firm and level platform.
Do not climb up on Vertical Auger / bucket for cleaning.
Always stand well clear of the Auger / bucket when boring and discharging spoil.
Maintain good access to and from the Panel at all times.
Place the gratings on the pile as soon as possible.
BORING OPERATION BY ROTARY RIG
Keep people away from Pile, always protect if left unattended.
Always ensure cages are slung correctly when being inserted in the Panel.
Keep fingers and feet well clear when inserting cages.
Pile less than 750mm in diameter must never be entered.
When it is necessary to enter a Pile special precautions must be in force.
Ropes and slings are subject to heavy wear, inspect frequently and replace as necessary.
CAGE LOWERING
Guarding and Clean of Grab
Whilst boring is in progress, ensure that the Banksmen is provided with Safety harness tied up with rigid body away from Crane. Make sure build up of spoil does not erode the distance
A controlled zone must be established. This is defined as the area around the slew area at the back of the rig and which includes the Pile and around the spoil heap. From the front of the rig the zone extends beyond the bore and spoil heap by two metres. Only the banksman will normally be within the controlled zone, and will be in charge of any other persons who need to be there.
The demarcation of the controlled zone will depend on the circumstances. As a minimum, the area will be demarked by ropes and pins, where the piling contractor has sole possession of the site. Where ground workers or other trades are working nearby, the demarcation may be crowd type fencing or “Heras” fencing. Separation from the public will require a full site hoarding.
The loaded Augur must be slewed close to the ground in a controlled manner.
The Banksman is in charge of operations in the controlled zone. He must be a trained CTA Slinger Signaller and have receive one day’s safety training in the past 12 months and be clearly identified.
CONCRETING OPERATION
REMEMBER
LUMPS OF CLAY ARE AS HEAVY AS CONCRETE AND CAN CAUSE INJURY IF SPUN VIOLENTLY FROM THE AUGER. TAKE CARE AND KEEP IN CONTROL.
THANK YOU
Prepared by
Manish Ghodeshwar
ITD Cementation India Limited
Kalina, Mumbai