Method Statement for Plunge Column

8/18/2019 Method Statement for Plunge Column

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CEC - UG1B CONTRACT: ICB No. :-JP/EW/1B/C1

METHOD STATEMENT FORCONSTRUCTION OF PLUNGE

COLUMN IN STATIONDOC NO:

-

JAIPUR METRO RAIL

CORPORATION LIMITEDCONTRACT UG1B

PROJECT: Des!" #"$ Co"s%&'(%o" o) T'""e* +e%,ee" C#"$

Po*e #"$ B#$ Co'e& #"$ &ee&s#* *"e + Se*$ TBM

U"$e&!&o'"$ Me%&o S%#%o"s #% Co% Co'e& 2 B#$

Co'e& + C'% 2 Coe& Me%o$ o" E#s%-Wes% Co&&$o&

o) J#'& Me%&o 3P#se 1B #% J#'& R#5#s%#" I"$#.

LOCATION: JAIPUR

METHOD OF STATEMENT FORCONSTRUCTION OF PLUNGE COLUMN IN

STATION

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P&o5e(%M#"#!e&

R6 A7ASHGANGA

INFRASTRUCTURE

Co"s%&'(%o" P%. L%$.

DGM-P*#"""!

De#&%8e"%

CEC

DPMSTATION

CEC

Se"o&M#"#!e&9A/9C

De#&%8e"%

CEC

Ce) M#"#!e&

HSEDe#&%8e"%

CEC

P&o5e(%Le#$e&

CEC

T#+*e o) Co"%e"%sS&. No. Des(&%o" P#!e No.

1.0 Purpose 03

2.0 Scope of Work 03

3.0 Site Establishment & Setting Out 03

4.0 a!or "esources to be #eplo$e% 04

4.1 Euipment to be #eplo$e% 04

4.2 anpo'er to be %eplo$e% 04

(.0 aterials 04

).0 "esponsibilit$ an% *uthorit$ 0(+.0 ,onstruction Proce%ure 0)

+.1 -rac anagement an% /arrica%ing 0)

+.2 SE easures 0)

+.3 #esign & #ra'ings 0+

+.4 Site Establishment 0+

+.( Sure$ing 0+

+.) Pre -rench 0

+.+ Plunge column boring 0

+. uck #isposal 0

+. Preparation of "ebar ,age 10

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+.10 ,oncreting 12

.0 ualit$ ,ontrol 5 ,ontrol *ssurance 12

.0 Enironmental anagement 12

10.0 Safet$ an% Emergenc$ Proce%ure 1311.0 *ttachments 13

1.0 PURPOSE -his etho% Statement %escribes the construction process of 1(00 mm

%iameter Plunge columns in station areas.

.0 SCOPE OF WOR7

-he scope of 'ork an% the ,onstruction Seuence for installation of permanent

Plunge ,olumn shall be as mentione% belo'6

a. -rac anagement an% /arrica%ing

b. SE easures.

c.#esign an% #ra'ings

%. Site Establishment

e. Sure$ing

f. Pre7e8caation

g. /oring into soil to the %esign %epthh. uck "emoal

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i. 9abrication of structural steel :ange column

!. ,age preparation an% cage lo'ering

k.-remie ;o'ering

l. ,oncreting for Plunge ,olumnm. /ack


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. -ransit i8er 7 no

. /atching Plant C)0 cum5hrD 7 1 no

4. M#"o,e& %o +e $e*oe$

S&.

No.

C#%e!o& N'8+e&

1 ,onstruction anager 1

2 Site Engineer 2

3 , Engineer C9iel% an% ;abD 1

4 echanical Engineer 1

( Sure$or 1) 9oreman 1

+ Superisor 4

Electrician 2

Safet$ Ocer 2

10 echanic 2

>.0 MATERIALS

,oncrete as per *pproe% mi8 %esign 3( =ra%e.

"einforcement Steel conforming to speci


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o ualit$ anuals

o ,onstruction etho%olog$

F Oerall responsible for the 'hole operation.

?. S%#%o" M#"#!e&

F e shall be oerall responsible for the 'hole procurement of en> aterial an%

achiner$ at site> inclu%ing operation planning an% a%here% 'ith 'orks

program. e shall be liaison 'ith Gtilit$ O'ning *genc$ for approal of Gtilities

#iersion Plans Cif an$D.

?.; S%e E"!"ee&

F "esponsible for site operation.

F aterial an% euipment planning.

F Ensure 'orks are carrie% out in accor%ance 'ith the metho% statement.

F Ensure 'orks follo' approe% %ra'ings an% speci


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?.? S#)e% Pe&so""e*

• Ensure 'orks are carrie% out in a safe manner an% in accor%ance 'ith the

safet$ reuirements stipulate% in the SE plan.

• ,on%uct tool bo8 talks on the safet$ reuirements> construction risks an% its

control measures etc.

?.@ S'&eo&

• ,arr$ out setting up 'orks an% locate as per submission %ra'ings.

• ,arr$ out inspection for location an% leel of structure.

• @eep monitoring the moement of groun% an% structure.

?. 9C E"!"ee&

• Ensure 'orks are carrie% out in accor%ance 'ith speci Safet$ & ualit$ an% enclose Anspection an% -est Plan an% risk

assessment. e shall reie' the metho% statement as per site reuirement.

@. CONSTRUCTION PROCEDURE

@.1 T( M#"#!e8e"% #"$ B#&&(#$"!

-rac management shall be carrie% out as per the approe% -rac #iersion

Plan. 9or hea$ euipment mobiliHation> necessar$ precautions shall be taken to

bring the reuire% items 'ithin the 'ork area boun%ar$ b$ carefull$ managing

the trac. -he 'ork location shall be barrica%e% as per the site reuirement an%

all the euipment shall be installe% insi%e barrica%e% area.

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@. SHE Me#s'&es

1D *ll the 'orkers shall be proi%e% 'ith reuire% PPE Csafet$ !acket> shoes> helmet>

han% gloes etc.D before the$ are engage% in the 'ork.

2D Safet$ in%uction shall be proi%e% to the superisors> engineers an% 'orkers.

3D -ool bo8 meetings shall be organiHe% eer$ %a$ b$ site superisor before start of

'ork in or%er to keep 'orkers a'are of associate% risks an% safe 'orking in

or%er to aoi% acci%ents5in!uries.

4D GnauthoriHe%5outsi%ers shall not be allo'e% to enter insi%e5sta$ near the area

barrica%e% %uring 'ork in progress.

(D 9irst ai% facilities shall be ma%e aailable at site an% male nurse shall be

aailable at principal 'ork spot to ren%er the if so reuire%.

)D Proper ;ighting arrangement shall be maintaine% %uring night 'ork Cor in %a$

time in case of lo' isibilit$D.+D ousekeeping shall be maintaine% at 'ork spot to aoi% an$ un%esirable

inci%ent.

D Emergenc$ contact number shall be aailable an% %ispla$e% at the %esignate%

locations near the 'ork spot to tackle an$ emergenc$ situation occurring at site.

D *ll the machines shall be inspecte% before %eplo$ing to the 'ork an% proper

guar%ing for moing parts

Shall be in place prior to commencement of 'ork. Operators 'ith ali% licence

C'here applicableD shall be allo'e%.

10D Silent t$pe #= sets shall be %eplo$e% at 'ork location.11D #rip tra$ shall be proi%e% un%erneath the machineries to aoi% lan%

contaminations.

12D #ust bins shall be aailable at prominent locations of 'ork site to collect

generate% 'aste out of site actiities.

13D "isk assessment shall be %iscusse% among all concerne% prior to start of the

actiit$.

14D *fter completion of 'ork at a particular stretch reuire% back


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original con%ition.

@.; Des!" 2 D,"!s

*. -he 'ork shall be carrie% out as per the approe% %esign an% %ra'ing.

/. ,ontrolle% copies of releant %ra'ings shall be ma%e aailable at site an% shall

remain aailable 'ith site engineer throughout the 'ork.

@.4 S%e Es%#+*s8e"%

/efore starting an$ actiities> a site utiliHation plan is %ra'n sho'ing the arious

establishments at site such as location of Panel formation> Putting #=Is> Pol$mer

tanks> uck bin> oce etc. through a %etaile% sure$. -he site area shall be then

cleane% properl$ an% ma%e free from an$ on an% oer groun% obstruction an%

necessar$ barrica%ing shall be installe%. *ll plant an% euipment shall be place%

as per this plan.

@.> S'&e"!

Gpon clearing the site area> the setting outpoints shall be marke% for the

sub!ecte% Plunge ,olumn panel an% 'ith reference to that gui%e 'all> points

shall be marke% through reuisite sure$. "eference pillars shall be al'a$s

presere% for checking of constructe% gui%e 'all at later stage. *ll the sure$

points5coor%inates shall be maintaine% in sure$ sheet an% checke%5approe%

b$ Engineer prior to construction 'ork.

@.? P&e T&e"(

#uring this pre e8caation process> inestigation an% eri the same shall be %one either through local shifting or

proi%ing the local %iersion as agree% upon b$ the utilit$ o'ner. -he %iersion

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process if necessar$ shall be %one in consultation 'ith utilit$ o'ner. Gtilit$

%iersion shall be %one as per *pproe% etho% Statement. -he utilit$ %iersion

metho% statement shall proi%e %etaile% information about the un%erl$ing

utilities an% the process to be follo'e% for the %iersion process.

@.@ P*'"!e Co*'8" Bo&"!

3#Bo&"! o) So*

1.( meter %iaJ /oring of soil shall be carrie% out using a rotar$ $%raulic

pilling rig in normal soil strata to the reuire% %epth as Per #ra'ing

?o.O@A,P;7B1/7,7S,7,70411.Soil stabiliHation 'ill be ensure b$ pol$mer


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lo'ering the ,asing 'ith crane. Kerticall$ shall be checke% an% ensure%

%uring installation.

-he casing shall then be %rien into the groun% 'ith rotar$ machine untilabout 300 mm is left protru%ing aboe the groun%.

#rilling rig is then use% to progress the e8caation to the bottom of the

casing pipe an% then pol$mer shall be a%%e% before an$ further e8caation

is ma%e.

#uring e8caation pol$mer shall be a%%e% continuall$ from the storage tank

such that leel is maintaine% 'ith in 1000mm belo' top of casing pipe.

E8caation %epth shall be foun% b$ soun%ing tape.

3ePo*8e& S*'&& P&e#%o" S%o!e #"$ (&('*#%o"

#r$ pol$mer po'%er shall be teste% an% approe% prior to the use. -he

batching plant shall be erecte% on a%euate impermeable slab. #r$

pol$mer po'%er shall be mi8e% in the mi8ing tank 'ith the 'ater. -he

mi8ing shall be achiee% b$ %e%icating a pump an% compresse% air s$stem.

-he mi8ing tank capacit$ ma$ be 1.( times the e8caationLs olume. -he

mi8ing tank shall be connecte% to the slurr$ storage tank 'ith appropriate

routing ales. -hus pol$mer slurr$ is ma%e rea%$ for use 'ith reuire%

properties.An the secon% phase the pol$mer slurr$ shall be pumpe% to the trench an%

circulate% continuousl$ till e8caation is oer. While the panel e8caation is

going on the pol$mer slurr$ continuousl$ :o's to the trench an% thus

stabiliHes the trench throughout its %epth. While e8caation> the pol$mer

slurr$ get mi8e% 'ith soil an% loses its properties. ,ontinuous circulation of

fresh pol$mer shall help to keep the properties of the pol$mer slurr$ een

then it is mi8e% 'ith the soil. -he return slurr$ shall be pumpe% into the

se%imentation tank. -he se%imentation tank shall be kept open to the top

to allo' an eas$ cleaning an% remoal of se%iments. *s se%imentation tankis inclu%e% 'ith three %e:ector ertical plates> continuous :o' of slurr$

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shall occur in Mcasca%eM like mo%e an% increase the spee% of the

se%imentation occurring bet'een %iNerent compartments. -he


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thoroughl$ an% be ma%e free from muck before the truck e8its the site. *fter

remoing all the muck the area shall be cleane% using 'ater through the 'ater

pipe line arrangement at site.

@. P&e#%o" o)

Re+#& C#!e

@..1Re")o&(e8e"% S%ee* C#!e C'%%"! Be"$"!

-he reinforcement cage shall be in single piece or t'o pieces %epen%ing upon

the site con%ition an% euipment aailabilit$> the cage ma$ be fabricate% an%

lo'ere% into /ore Pile. -he reinforcement shoul% be cut an% ben% at the steel

$ar% or at site as per bar ben%ing sche%ule an% the cages shall be prepare% at

site oer a leel groun%. ?ecessar$ spacer bars> inserts an% coer

blocks shall be proi%e% along 'ith the reinforcement cage. ,are shall be takento fabricate the cage in true line an% leel 'ith coer blocks the /ar /en%ing sche%ule shall

be prepare% an% shall be submitte% for approal. -he reinforcement shall be cut

an% bent as per approe% /ar /en%ing Sche%ule in reinforcement $ar% situate%

at the casting $ar%. -he cut an% bent steel shall be shifte% to the site 'ith the

help of -railer for making the cage. -he reinforcement cage shall be fabricate% at the site. Af there is insucient

space on site> the same shall be fabricate% at the casting $ar% or other oNsite

location an% the prefab cage shall be shifte% to site through trailer. -he

reinforcement cage shall be fabricate% using the /in%ing 'ire an% 'hereer

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reuire% 'el%ing shall be %one. C#etails of Plunge ,olumn "einforcement are

sho'n in #ra'ing ?o. O@A,P;7B1/7,7S,7#70+2*D. -he cage shall be fabricate% oer the fabrication be% consisting either of steel

chairs> channels or 'oo%en sleepers. -he clear coer shall be maintaine% as per%esign 'hich is +( mm. ,oncrete spacers Csame gra%e as Plunge ,olumn

concrete > circular or trapeHoi%al ski% shapeD shall be


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*fter lo'ering of reinforcement cage> tremie of minimum 200mm %ia an% length

of 1.2 to 2m shall be lo'ere% in pieces an% connecte% 'hile lo'ering for full

%epth of trench 'ith the help of serice crane an% hopper of appro8imatel$ 1.(

cum capacit$ shall be attache% to the top of tremie [email protected] Co"(&e%"!

,oncrete of reuire% gra%e 3( shall be batche% in the batching plant an% same

shall be transporte% through the transit mi8er an% poure% to the hopper5tremie

pipe. Anitial setting an%


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tra$s to be use% un%erneath compressors an% generators. Site is to be kept free

of %ust. ?oise leels shall be kept 'ell 'ithin the allo'able limits.

. E"&o"8e"%#* M#"#!e8e"%

Safet$> ealth an% Enironment CSED plan shall be follo'e% throughout theconstruction program. -he ,onstruction of Plunge ,olumn inoles the use of

hea$ machineries such as crane> e8caators an% trucks etc. an% these

machines ineitabl$ create noise. o'eer> in or%er to minimiHe the noise an%

%iscomfort to the people liing in the neighborhoo% or the shopkeepers an%

people coming to the nearb$ markets> all the machines shall be proi%e% 'ith

suitable silencers an% 'ith acoustic enclosures> ?oise barriers shall be erecte%

to minimiHe the noise pollution.

-he construction shall also inole the remoal of earth from site to %umping

areas b$ %umpers that shall use the public roa%s. #uring transportation the%umpers shall be coere% b$ tarpaulins. -he muck shall be %ispose% %uring the

night hours onl$ an% one superisor$ leel staN shall be engage% permanentl$

at %umping $ar% 'ith B,/ for leeling the upcoming soil leeling> 'hile %umping

the soil.

Simultaneousl$ the area leeling an% shall create a proper 'a$ for soil %umping.

-he use% pol$mer slurr$ shall be transporte% in %umpers.

-he 'ashing ba$ shall be installe% near each e8it gate. -hese 'ashing ba$s are

of improe% %esign using a hea$7%ut$ pump haing high hea% an% large

%ischarge. -he tires an% the un%ercarriage of the ehicles shall be 'ashe%

before the ehicle leaes the 'orking area for %umping site. An case 'ater is not

aailable %ue to 'ater scarcit$> tire shall be cleane% manuall$ 'ith 'ire brush.

"euire% persons shall be engage% to clean the si%es of the ehicles manuall$.

-he 'orking area shall be kept clean an% ti%$.

10. S#)e% #"$ E8e&!e"( P&o(e$'&es

#uring e8caation all necessar$ precautions to ensure stabilit$ to the

e8caations an% gui%e 'alls shall be taken. Af e8caation be suspen%e% for an$

reason> pol$mer in the trench shall be agitate%> perio%icall$ 'ith the grab or b$

circulation for a ma8imum perio% of 24 hrs. -his shall be follo'e% b$ back


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An the eent of a su%%en loss of pol$mer slurr$ or trench collapse> the

e8caation shall be imme%iatel$ stoppe% an% the trench back

Method Statement for Plunge Column

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