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