Construction Formwork

8/16/2019 Construction Formwork

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FORMWORK A STUDY OF ITS VARIOUS TYPES, MATERIALSAND CONSTRUCTION TECHNIQUES



INTRODUCTION TO FORMWORK

What is Formwork? Formwork in on!"r#"ion i! "$% #!% o& !#''or" !"r#"#r%!(n) mo#*)! "o r%("% !"r#"#r%! o#" o& onr%"% w$i$ i!'o#r%) in"o "$% mo#*)!+ Formwork (n % m()% #!in-mo#*)! o#" o& !"%%*, woo), (*#mini#m (n).or 'r%&(ri("%)&orm!+

Formwork i! (n ancillary construction, used as amould &or ( !"r#"#r%+ In"o "$i! mo#*), &r%!$ onr%"% i!'*(%) on*/ "o $(r)%n !#!%0#%n"*/+

The construction of formwork takes time andinvolves expenditure up to 20 to 25% of the cost ofthe structure or even more

T$% o'%r("ion o& r%mo1in- "$% &ormwork i! known (!!"ri''in-+ S"ri''%) &ormwork (n % r%#!%) !eusa"leforms are known as panel forms and non#usa"le arecalled stationary forms

Formwork is desi$ned accordin$ to The &'document ()#*



$ood formwork should satisfy the followin$ re+uirements

S"ron- %no#-$ "o withstand all types of dead and live loads

!i$idly constructed and e.ciently propped (n) r(%) o"$ $ori2on"((! "o r%"(in i"! !$('%

T$% 3oin"! in "$% &ormwork !$o#*) % ti$ht a$ainst leaka$e of cement $r

Con!"r#"ion o& &ormwork !$o#*) permit removal of various parts in deswi"$o#" )(m(-% "o "$% onr%"%

M("%ri(* o& "$% &ormwork !$o#*) % cheap, easily availa"le and should "reuse

T$% &ormwork !$o#*) "e set accurately to the desired line and levels !!#r&(%+

A! li$ht as possi"le

M("%ri(* o& "$% &ormwork should not warp or $et distorted w$%n %4'o!%

S$o#*) rest on /rm "ase

T$% &o**owin- 'oin"! (r% "o % k%'" in 1i%w to eect economy in the cost

T$% '*(n o& "$% #i*)in- !$o#*) im'*/ minim#m n#m%r o& 1(ri("ion! in "$% (r%( %"+ !o (! "o '%rmi" r%#!% o& "$% &ormwork r%'%("%)*/+

D%!i-n !$o#*) % '%r&%" "o #!% !*%n)%r !%"ion! on*/ in ( mo!" %onomi(*

Minim#m !(win- (n) #""in- o& woo)%n 'i%%! !$o#*) % m()% "o %n(*% r%( n#m%r o& "im%!+ T$% #(n"i" o& !#r&(% 7ni!$ )% %n)! on "$% #(*i" o&



&onventional5 T$% &ormwork i! #i*" on !i"% o#" o& "im%r (n) '*/woo) or moi!"#r%r%!i!"(n" '(r"i*%o(r)+ I" i! %(!/ "o 'ro)#% #" "im%8on!#min- &or *(r-%r !"r#"#r&(in- $(! ( r%*("i1%*/ !$or" *i&%!'(n+ I" i! !"i** #!%) %4"%n!i1%*/ w$%r% "$% *(o#r o

o!"! &or 'ro#rin- r%#!(*% &ormwork+ I" i! (*!o "$% mo!" 6%4i*% "/'% o& &ormwork,!/!"%m! (r% in #!%, om'*i("%) !%"ion! m(/ #!% i"+

1odern#ay Formworks T$i! &ormwork !/!"%m! (r% mo!"*/ mo)#*(r, w$i$ (r%%9i%n/+ T$%/ (r% )%!i-n%) "o 'ro1i)% inr%(!%) (#r(/ (n) minimi2% w(!"% in$(1% %n$(n%) $%(*"$ (n) !(&%"/ &%("#r%! #i*"8in+ T$% m(in "/'%! o& &ormwork !/!

:+ T(*% &orm.6/in- &orm

;+ S/!"%m o*#mn &ormwork

<+ Hori2on"(* '(n%*=+ S*i' &orm

>+ T#nn%* &orm

3n$ineered4)re#fa"ricated Formworks T$i! &ormwork i! #i*" o#" o& 'r%&(ri(m%"(* &r(m% ?#!#(**/ !"%%* or (*#mini#m@ (n) o1%r%) on "$% (''*i("ion ?onr%"%@$(1in- "$% w(n"%) !#r&(% !"r#"#r% ?!"%%*, (*#mini#m, "im%r, %"+@+ T$% "wo m(3o&ormwork !/!"%m!, om'(r%) "o "r()i"ion(* "im%r &ormwork, (r% !'%%) o& on!"r#/*% o!"! ?(rrin- m(3or &or%, "$% &r(m% i! (*mo!" in)%!"r#"i*%, w$i*% "$% o1%rm(/ $(1% "o % r%'*(%) (&"%r ( &%w B or ( &%w )o2%n B #!%!, #" i& "$% o1%rin- i! m(*#mini#m "$% &orm (n ($i%1% #' "o "wo "$o#!(n) #!%! )%'%n)in- on (r% (n) "$

CATEORIES OF FORMWORK



MATERIALS USED

Formwork (r% m(in*/ o& "wo "/'%!

S"%%* &ormwork

Woo)%n &ormwork

S"%%* &ormwork i! m()% o&

S"%%* !$%%"!

An-*% Iron

T%% Iron

Woo)%n &ormwork on!i!"! o&

Pro'!

P*(nk! (""%n!

L%)-%r!

S$%%"in-

Woo)%n &o

S"%%* Formw



(heetin$ forsla"s, "eam,column side and"eam "ottom

;> mm "o =mm"$ik

oints, led$es > 4 mm "o> 4 :> mm

)osts 75 x 100mm to

100 x 100 mm

Tim"er formwork

- Mo!" ommon m("%ri(* #!%) &orr(in- "$% m%m%r, $%n% (**%)(! "$% "r()i"ion(* &ormwork+

- (n %(!i*/ % #" "o !i2% on !i"%+ oi!" (r% r%'*(%) wi"$ %n-in%%r%)woo) %(m! (n) !#''or"! (r%r%'*(%) wi"$ m%"(* 'ro'!+ T$i!m(k%! "$i! m%"$o) mor%!/!"%m("i (n) r%#!(*%+

- V(rio#! !i2%! o& m%m%r! o& "im%r



)lywood

- T$i! i! / &(r "$% mo!" ommonm("%ri(* #!%) &or "$% &(in- '(n%*+ I" i!%(!i*/ #" "o !$('% on !i"%, (n) i&

$(n)*%) (n) !"or%) (r%&#**/, i" (n %#!%) m(n/ "im%!+

- A !"(n)(r) '*/woo) "$ikn%!! on !i"%i! :Gmm+ T$i! i! #!#(**/ !#9i%n" &ormo!" 'o#r!+

- How%1%r, i& "$% &ormwork i! #r1%), ("$inn%r '*/woo) i! #!%) "o &(i*i"("%

%n)in-+

- T$ik%r '*/woo) m(/ % #!%) w$%n"$% w%i-$" o& onr%"% (#!%! (!"(n)(r) "$ikn%!! '*/woo) "o owo#", )i!"or"in- "$% onr%"% &(%+



(teel formwork

- S"%%* &orm! (r% !"ron-%r, )#r(*%(n) $(1% *on-%r *i&% "$(n "im%r&ormwork (n) "$%ir r%#!%! (r%

mor% in n#m%r

- S"%%* &orm! (n % in!"(**%) (n))i!m(n"*%) wi"$ -r%("%r %(!% (n)!'%%)+

- T$% 0#(*i"/ o& %4'o!%) onr%"%!#r&(% / #!in- !"%%* &orm! i!-oo) (n) !#$ !#r&(%! n%%) no

&#r"$%r "r%("m%n"+

- S"%%* &ormwork )o%! no" (!ormoi!"#r% &rom onr%"%+

- S"%%* &ormwork )o%! no" !$rink orw(r'



luminium formwork

- O&"%n #!%) in 'r%8&(ri("%)&ormwork, "$(" i! '#" "o-%"$%r on!i"%+

- A*#mini#m i! !"ron- (n) *i-$", (n)on!%0#%n"*/ &%w%r !#''or"! (n)"i%! (r% r%0#ir%)+

- T$% *i-$"%r !%"ion! wi** )%6%"mor%, #" "$i! (n % (1oi)%) /!im'*/ &o**owin- "$% m(n#&("#r%r!r%omm%n)("ion!+



)lastic formwork

- *(!! r%in&or%) '*(!"i! ?RP@ (n)1(##m &orm%) '*(!"i! (r% #!%)w$%n om'*i("%) onr%"% !$('%!(r% r%0#ir%) ?%+-+ w(% 6oor!@+

- A*"$o#-$ 1(##m &orm%) '*(!"i!wi** (*w(/! n%%) !#''or", RP (n% &(ri("%) wi"$ in"%-r(* %(r%r!m(kin- i" !%*& !#''or"in-+

- Lik% !"%%*, '*(!"i &ormwork (n %r%8#!%) m(n/ "im%!, (! *on- (!(r% i! "(k%n no" "o !o#r "$%!#r&(% w$i*!" 1ir("in- "$%onr%"%+



PROCESS OF FORMWORKCONSTRUCTION

FORMWORK FOR VARIOUS STRUCTURAL MEMERS

&onstruction of formwork

T$i! norm(**/ in1o*1%! "$% &o**owin- o'%r("ion!5

:+ Pro''in- (n) %n"%rin-

;+ S$#""%rin-

<+ Pro1i!ion o& (m%r

=+ C*%(nin- (n) !#r&(% "r%("m%n"



't consists of• Tim%r !$%%"in-• V%r"i(* 'o!"!• Hori2on"(* m%m%r!• R(k%r!• S"(k%!• W%)-%!

A&"%r om'*%"in- on% !i)% o& &ormworkr%in&or%m%n" i! 'ro1i)%) (" "$% '*(%"$%n "$% !%on) !i)% &ormwork i!'ro1i)%)+

FORMWORK FOR WALL



W(** Formwork! (n) i"! om'on%n"



FORMWORK FOR COLUMN

• 't consists of the followin$

– Si)% J En) P*(nk!

– Yok%

– N#" J o*"!

• Two %n) J "wo !i)% '*(nk! (r% 3oin%) / "$% /ok%! (n) o*"!+



3rection se+uence for a column

Prior "o 'o!i"ionin- o*#mn &ormwork $%k "$(" !"%%* &or "$% o*#mn $(! %%n in!'%"%) (n) *%(r%) &or (!"in-+

- Po!i"ion &ormwork &or "$% o*#mn &rom 'r%)%"%rmin%) -ri)!+- P*#m &ormwork o"$ w(/! (n) !%#r%*/ !#''or" #!in- ()3#!"(

*% !"%%* 'ro'!+- T$% 'ro''in- (n-*% !$o#*) % => "o "$% 6oor+- En!#r% "$% !"%%* 'ro'! (r% !(&%*/ !%#r%) "o "$% o*#mn &ormwo

rk (n) "$%

6oor, (n) "$(" ()3#!"m%n" &or '#!$in- (n) '#**in- i! o'%r("ion(*+- S%" o#" "$% 'o!i"ion! o& o*#mn *(m'! &rom ( !"or%/ ro)+- Tr(n!&%r "$% o*#mn *(m' 'o!i"ion! &rom "$% !"or%/ ro) on"o o

*#mn &ormwork+

- U!% n(i*! "o !#''or" "$% (rm! o& o*#mn *(m'! w$i*% w%)-in-+- Po!i"ion (n) w%)-% "$% o""om, mi))*% (n) "o' *(m'! !%"!+- C$%k "$% &ormwork (" "$% "o' &or !0#(r%+- Po!i"ion (n) w%)-% "$% r%m(in)%r o& "$% o*#mn *(m'!+- U!in- ( '*#m o !#!'%n)%) &rom ( -(#-% *ok '*#m "$%

o*#mn+

W$%n (** "$% o*#mn &ormwork i! !%#r%*/ 'ro''%) ( 7n(* $%k m#!" % m()% &or '*#m (n) o*#mn (*i-nm%n" %&or% (n) imm%)i(

"%*/ (&"%r "$% onr%"% $(! %%n 'o#r%) (n) 1ir("%)+

Co*#mn *(m'%4"%rn(* !#'

(1oi)in-





CIRCULAR AND OCTAONAL COLUMNS Cir#*(r o*#mn &ormwork

F(ri("%) !"%%*, #!#(**/ "wo 'i%%, (n) o&"%n wi"$ ( $in-%+

Fir% %m%n" 'i'%! w$i$ (r% *%&" in '*(% (! '%rm(n%n" &ormwork+

Tim%r !$%("$in- "i%) wi"$ !"(n)(r) o*#mn *(m'!+ Corn%r! n%%) "o $(1% in7** 'i%%!+ A*"%rn("i1%*/, m%"(* !"r(' (n %#!%) wi"$o#" "$% n%%) &or orn%r in7**!+



Co*#mn &ormwork r(in- '%r&orm! "wo &#n"ion!5

I" m#!" m(in"(in "$% (#r(/ o& "$% o*#mn &orm 'o!i"ion (n) '*#m !o

i" i! wi"$in "o*%r(n%+Wi"$!"(n) r%!#*"! o& &or%! ("in- on %i"$%r "$% o*#mn &ormwork or "$% n-+ T$% &or%! m(/ % win) orim'("+ T$%!% im'(" &or%! (n o#r &rom "$% o**i!ion o&onr%"% #k%"! or r(n%! $oi!"in- m("%ri(*!

COLUMN RACIN FORMWORK



FORMWORK FOR EAM

%(m !o9" m#!" % "$ik%n%) "im%r or !"r%n-"$%n%) '*/woo)+

%(m !i)%! :Gmm '*/woo) or ;>mm o(r)!, wi"$ !"#)! ?*%("!@ (" > "o mm %n"r%!+

D%%' %(m! ?o1%r mm@ !$o#*) $(1% w(*k%r! (n) "i%!+

U!% (n-*% 7**%"! in "$% %(m !i)% "o!o9" 3oin" w$%r% 'o!!i*%+

A**ow(n% m#!" % m()% &or $%i-$" ()3#!"m%n" o& "$% 'ro'!or &(*!%work+

3rection se+uence for constructin$ "eam formwork includes Po!i"ion o& !o*% '*("%!

M(rkin- o#" (n) !%""in- $%i-$"! &or &(*!%work!

A!!%m*% (n) 'o!i"ion 'ro'!, ()3#!"(*% $%() 3(k!,&(*!%work! , %(r%r! (n) S'r%()%r!

Con!"r#" (n) %r%" !i)% w(**! (n) %(m !o9"+

Po!i"ion o& !o*% '*("%!



FORMWORK FOR STAIRCASE

Poin"! "o on!i)%r w$%n )%!i-nin- !"(ir &orm work 5

S"(ir &ormwork m#!" !#''or" "$% w%i-$" o& onr%"%+

T$% w%i-$" o& "$% "$ro(" o& "$% !"(ir (n) "$% !"%'! wi** $(1% "o % !#''or"%)+

%(#!% o& "$% !*o'% o& "$% !"(ir, !om% o& "$% &or% i!

"r(n!mi""%) !i)%w(/!+ A** &ormwork m#!" % w%** "i%)"o-%"$%r "o 'r%1%n" !i)%w(/ mo1%m%n"+

Con!i)%r "$% 7ni!$ o& "$% !"(ir "r%()! (n) "/'% o& no!in

-+ S'(% m(/ $(1% "o % *%&" &or '#r'o!% m()% no!in-+





SOLE PLATE

T$% '#r'o!% o& ( !o*% '*("% i! "o "r(n!&%r 1%r"i(* *o() &rom on% 1%r"i(* !#''or" m%m%r "o "$% &o#n)("ion

T$% 1%r"i(*!#''or" r%0#ir%! ( (!% '*("% 7""%) "o $%*')i!"ri#"% "$% *o() "o "$% !o*% '*("%, w$i$ i! #!#(**/ (

!*%%'%r+

I& "$% !o*% '*("% i! 'o!i"ion%) on n("#r(* -ro#n), i" i!

im'or"(n" "$% -ro#n) i! -r()%) (n) on!o*i)("%) "o (*%1%* !#r&(%+

T$% o3%"i1% i! "o ($i%1% m(4im#m %(rin- %n%("$!o*% '*("%+

On% !o*% '*("%! (r% 'o!i"ion%) (n) 7rm*/ %))%) "$%/

!$o#*) % $%k%) &or *%1%*+



CURIN



&urin$ i! "$% 'ro%!! in w$i$ "$% concrete i! 'ro"%"%) &rom *o!! o& moi!"#r% (n) k%'"wi"$in ( r%(!on(*% "%m'%r("#r% r(n-%+ T$%r%!#*" o& "$i! 'ro%!! i! inr%(!%) !"r%n-"$(n) )%r%(!%) '%rm%(i*i"/+ &urin$ i! (*!o (

k%/ '*(/%r in mi"i-("in- r(k! in "$%concrete, w$i$ !%1%r%*/ im'("! )#r(i*i"/

• T$% *%n-"$ o& ()%0#("% #rin- "im% i!)%'%n)%n" on "$% &o**owin- &("or!5

• Mi4"#r% 'ro'or"ion!

• S'%i7%) !"r%n-"$

• Si2% (n) !$('% o& onr%"% m%m%r• Ami%n" w%("$%r on)i"ion!

• F#"#r% %4'o!#r% on)i"ion!

• eshutterin$ is a process after curin$



DESHUTTERIN

3(67TT3!'89 in simple means, the process of removin$:Formwork for &oncrete;

Or)%r (n) m%"$o) o& r%mo1in- &ormwork5

S$#""%rin- &ormin- 1%r"i(* &(%! o& w(**!, %(m! J o*#mn !i)%! !$7r!"+ S$#""%rin- &ormin- !o7" "o !*( !$o#*) % r%mo1%) n%4"+

S$#""%rin- &ormin- !o9" "o %(m!, -ir)%r! or o"$%r

$%(1i*/ *o()%) m%m%r! !$o#*) % r%mo1%) in "$% %n)+

Factors considerd

• Conr%"in- i! )on% #n)%r norm(* ir#m!"(n%!

• C%m%n" #!%) i! Or)in(r/ Por"*(n) C%m%n"

• A)%0#("% #rin- i! )on%

• Ami%n" "%m'%r("#r% i! no" &(** %*ow :> )%-r%%



DESHUTTERIN AENTS

There are chances of concr<te stickin$ to the formwor 6ence deshutterin$ a$ents are used to ease the proce

Do!(-% . Co1%r(-%5

Di*#"ion r("io5 KEM MRA ;5 w("%r (" :5:+ Co1%r(-%5 : !0)%'%n)in- on on)i"ion! o& &ormwork

KEM MRA : 8 ;> . < m . *i"%r )%'%n)in- #'on "$% 'oro!i"on)i"ion o& "$% !#!"r("%



TRADITIONAL FORMWORK

Tim%r &orm work w(! #!%) "r()i"ion(**/ *("%r i" -o" r%'*(%) wi"$ mo)%rn m("%ri(*! )#%"o i"! *imi"("ion! (n) o!" &("or!

Formwork i! #i*" on !i"% wi"$ "im%r (n) '*/ or moi!"#r% r%!i!"(n" '(r"i*% o(r)+

I" i! %(!i%r "o 'ro)#% #" "$% "im% "(k%n i! mor%

E4"%n!i1%*/ #!%) w$%r% "$% *(or o!" ! (r% *ow

I" i! "$% mo!" 6%4i*% "/'% o& &ormwork

U!#(**/ "im%r in "'*/woo), '*(nkin-,(""%n (n) 3oi!" (r"$% (!i m("%ri(*+

H#m(n work%r! n%in"o %1%r/ orn%r "

"$% &ormwork in!"(



EPLORIN NEW FORMWORK TECHNIQUES



(=')F>!1 T3&68>=>9 INTRODUCTION5

•M%"$o) o& vertically extrudin$ ( r%in&or%)onr%"% !%"ion (n) i! !#i"(*% &or on!"r#"ion o&or% w(**!in $i-$8ri!% !"r#"#r%! @ lift shafts, stairshafts,towers+

• T$% &ormwork ri!%! on"in#o#!*/, (" ( r("% o& (o#"A00 mm per hour, !#''or"in- i"!%*& on "$% or% (n)no" r%*/in- on !#''or" or (%!! &rom o"$%r '(r"!o& "$% #i*)in- or '%rm(n%n" work!+

•A**ow! &or "$% continuous pourin$ of concreteinto walls of a structure and only stops when

the full re+uired hei$ht of the structure has"een reached

• T$% $%i-$" o& "$% &ormwork i! )%!i-n%) in !#$ ( w(/"$(" w$i*% "$% top of the formwork is "ein$ /lled"y concrete the lowest layer of concrete pouredearlier has already $ained an initial set+ W$%n"$% &ormwork i! mo1%) #'w(r)! "$% onr%"% "$(" i!"$%n %4'o!%) r%m(in! 7rm+ CH

CE

PROCEDURE 5



•A!!%m*/ (n on*/ !"(r" on% "$% foundations are inplace (n) "$% w(** !"(r"%r i! in orr%" (*i-nm%n"+

•S*i'&orm !$#""%rin- i! (*i-n%) wi"$ "$% $%*' o& yokes

•Hori2on"(* ro!!%(m! onn%" "$%!% /ok%!+

•6ydraulic Backs (r% (""($%) "o "$%!% ro!!%(m! &or!im#*"(n%o#! upward movement

•H%i-$" o& "$% !*i'&orm r(n-%! &rom CC to C5 metres

• Yok%! (n) ro!!%(m! (*!o #!%) "o !#''or" "$% workin-'*("&orm

•S"r#"#r% !$o#*) % ri$id and shape maintained (" (**"im%!+

•M(k% !#r% "$%r% i! no *(- or %*!% i" 'r%1%n"! "$% !"r#"#r%&rom free upward movement

• I" i! also possi"le to reduce wall thicknesses(! "$% on!"r#"ion -(in! $%i-$" (n) (rr(n-%m%n"! $(1% "o % m()% in "$% !*i'&orm !"r#"#r% "$(" wi**

%n(*% !#$ r%)#"ion (" r%-#*(r in"%r1(*!+



ERECTION OF A TOWER USIN SLIPFORM



HORIONTAL FORMWORK 5

•S*i'&orm m%"$o)! o& on!"r#"ion

(n (*!o "e adapted to horiDontalstructures and are used forpavin$, canals, and tunnelin$

• T$% "%$ni0#% i! mor% in #!% &or!"r#"#r%! "$(" $(1% on"in#o#!walls like silos , chimneys, andpiers for very tall "rid$es

• I" $(! (*!o %%n !#%!!&#**/ #!%)&or on!"r#"ion o& #i*)in-!,(*"$o#-$ "$i! r%0#ir%! "$% m(nn%r o&*%(1in- in!%r"! &or o'%nin-! *ik%doors and windows to "edecided well in advance, (! w%**(! (*!o (n/ n%%!!(r/ in!%r"! "o!#''or" 6oor !*(! (&"%r "$% w(**!(r% on!"r#"%)+

ADVANTAES5



ADVANTAES5

•A m(3or cost of concrete structure construction i! "$%r%0#ir%) &ormwork "o r%"(in "$% onr%"% "i** i" (n % !(&%*/)%8!$#""%r%) (n) % (*% "o !#''or" i"!%*& (n) o"$%rim'o!%) *o()!+• T$% &ormwork n%%)! "o % on"in#(**/ r%mo1%) "o newer

locations and then re#erected•&ontinuous use of manpower and liftin$ e+uipmentlike cranes• In "$% (!% o& !*i'&orm #i*)in-, "$% &ormwork i! erectedonly once (n) r%m(in! in"(" #n"i* "$% %n"ir% !"r#"#r% i!om'*%"%)+

•9reat reduction in "$% cost of formwork (!

w%** (! "im% !(1in- &or r%8%r%"ion+•Co!" %%"i1%•S(1in- on"o the la"our cost otherwise used for intermittent concretin$ operations+• T$% r%)#"ion in "$% mo1%m%n" o& &ormwork(n) work%r! (*!o *%()! to far more safe workin$conditions "$(" (*!o m(k% i" ( m(3or ()1(n"(-%+



PRECAUTIONS • Conr%"% i! on"in#o#!*/ protected a$ainst loss ofmoisture and rapid temperature chan$es &or )(/!

• Un$(r)%n%) onr%"% i! 'ro"%"%) &rom rain and Eowin$water

• Pr%1%n" plastic shrinka$e

• P*(!"i r(k! (r% 7**%) "y inBection of epoxy resin+



RELATION ETWEENCONCRETE SETTIN TIMEAND SLIPFORM RATE5

•I" i! (*#*("%) / #!in-"$% &o**owin- %0#("ion5

s G :hC# hC ; 4 :ts @ tt;W$%r%V! B !*i'&orm r("% ?mm . $@H: "$% )i!"(n% &rom "$%"o' o& "$% !*i'&orm '(n%* "o"$% (1%r(-% #rin- &ron" ?mm@

H; T$% )i!"(n% &rom "$%"o' o& "$% !*i'&orm '(n%* "o(1%r(-% &r%%o(r) ?mm@

T! !%""in- "im% ?$@ T" Tim% &rom mi4in-onr%"% "o '*(in-

T7883= F>!1W>!H ((T31



• T#nn%* &ormwork !/!"%m (**ow! "$% on"r("or "o cast walls andsla"s in one operation in a daily cycle•I" omin%! "$% speed, +uality and accuracy o& &("or/.o8!i"%'ro)#"ion wi"$ "$% Eexi"ility and economy of in#situconstruction

• R%o-ni2%) (! ( modern method of construction ?MMC@+

T$% r%!#*" i! ( cellular reinforced structure, "$% !#r&(%! o& w$



(r% !#9i%n"*/ $i-$ 0#(*i"/ "o r%0#ir% on*/ minimal /nishin$ &or)ir%" )%or("ion, w$i*% "$% %n) w(**! (n) &(()%! (r% %(!i*/om'*%"%) wi"$ thermally insulated units "$(" (n % *() (!r%0#ir%)+

T$% !/!"%m r%("%! an e.cient load#"earin$ structure &or #!%

( wi)% 1(ri%"/ o& (''*i("ion!+

I" i! '(r"i#*(r*/ %%"i1% in 'ro3%"! !#i"%) "o r%'%"i"i1% %**#*(ron!"r#"ion !#$ (! residential "locks, hotels, studentaccommodation, "arracks and prisons+





esi$n T$% *(r-% (/! on!"r#"%) 'ro1i)% %4%'"ion(* Eexi"ility in thedesi$n (n) *(/o#" o& "$% #i*)in- (n) (**ow ( hi$h de$ree offreedom in the /nal appearance

(afetyIn"%-r(* workin- '*("&orm! (n) %)-% 'ro"%"ion !/!"%m!+ T$%r%'%"i"i1%, 'r%)i"(*% n("#r% o& "$% "(!k! in1o*1%) %no#r(-%!&(mi*i(ri"/ wi"$ o'%r("ion!+ The minimal re+uirement for toolsand e+uipment further reduces the risk of accidents onsite

(ustaina"ility

T$% in8!i"# (!"in- o& #ni"! on !i"% (n) "$% *o(* (1(i*(i*i"/ o&r%()/8mi4%) onr%"% !#''*i%! reduce transportation impacts+

#!"8in8"im% )%*i1%ri%! (n) near Dero wasta$e produce (no1%r(** "i)i%r !i"% wi"$ (!!oi("%) o!" !(1in-! (n) !(&%"/ %n%7"!+&oncreteKs thermal mass o#'*%) wi"$ orr%" in!#*("ion (n)oi*%r )%!i-n minimi!%! $%("in- o!"! (n) (n even reduce air#conditionin$ re+uirements+

9383!= F&T(



9383!= F&T(

T#nn%* &ormwork om% in half units and in the form of aninverted L=M w$i$ (r% o*"%) "o-%"$%r (" "$% "o' "o &orm %($"#nn%*+ T$% in#i*" w$%%*! (n) "$% 3(k! $%*' "$% &ormwork mo1%in (n) o#" o& "$% 'o!i"ion (n) ()3#!"%) "o "$% 7n(* $%i-$"+

T$% &("or/8m()% !"%%* &ormwork (n % re#used up to N00times (n) i" (n !#i" ( 1(ri%"/ o& mo)#*% !i2%!+ T$i! m(k%! "$%m%"$o) o& on!"r#"ion very versatile and extremelyeconomical

T#nn%*8&orm work (**ow! ( 2*#hour construction cycle "o %($i%1%) (n) "$#! "$% #i*)(i*i"/ o& in8!i"# onr%"% i! im'ro1%)/ $oo!in- "$i! "/'% o& &ormwork+

The &astin$ )rocess of Tunnel Formwork



$C; (ta$e >ne Pr%&(ri("%) W(** r%in&or%m%n" i! '*(%) /r(n% (*on- "$% %n"ir% win- 'rior "o (!"in- "$% kik%r! ?#!%) "o'o!i"ion w(** &ormwork@+

2; (ta$e Two Two (n) ( $(*& "#nn%* i! r(n%) in"o '*(%,o*"%) "o-%"$%r (n) "i%! (r% ())%)+

A; (ta$e Three T$% w(** onr%"% i! 'o#r%)+

http://theconstructor.org/practical-guide/work-procedure/concrete-work-procedure/

http://theconstructor.org/practical-guide/work-procedure/concrete-work-procedure/



*; (ta$e Four T$% !*( r%in&or%m%n"! (r%74%)

5; (t 5 T$ * " i * ) T$ & k "



5; (ta$e 5 T$% !*( onr%"% i! '*(%)+ T$% &ormwork !/!"%m'ro1i)%! &or ( 'o#r "o % wr(''%) in "(r'(#*in! (n) &or "$% #!% o&#"(n% $%("%r! "o m(in"(in ( !#9i%n"*/ $i-$ "%m'%r("#r% &or "$%onr%"% "o r%($ i"! !"rikin- !"r%n-"$ o1%rni-$"+

N; (ta$e N T$% "#nn%*8&orm! (r% r%mo1%) n%4" )(/+



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!(1in-! #' "o ;> wi"$ o!" !(1in-! o& :>+Sin% "$% onr%"% 7ni!$ i! 1%r/ -oo), "$% r%0#ir%m%n" &or'o!" on!"r#"ion "r()%! !#$ (! '*(!"%r%r! (n) %*%"rii(n!(r% -r%("*/ r%)#%)+



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T$% o*#mn &ormwor!/!"%m! now (1(i*((r% norm(**/ modulanature (n) (**ow +u

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w$i$ (n % *(m'%

Iene/ts'nr%(!%) speed and e.ciency in on!"r#"ion



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formwork• Di!'o!(*% &orm! om% r%()/ (!!%m*%) "o !i"%+•6i$h +uality surface /nishes (r% 'o!!i*%+• T$% $i-$*/ %n-in%%r%) n("#r% o& "$% m%"(*&ormwork !/!"%m ena"les precisionadBustment "o "$% &ormwork+

(afety



y•M%"(* &ormwork !/!"%m! (n $(1%in"%-r(* ready#to#use concretin$platforms with $uard rails (n)(%!! %0#i'm%n" in*#)in-*())%r!+ T$i! r%)#%! "$% n%%) &or

in)%'%n)%n" (%!!+•For !/!"%m! wi"$ )i!'o!(*%&ormwork, workin- '*("&orm! &oronr%"in- $(1% "o % %r%"%)!%'(r("%*/ "o (**ow !(&% (%!! "o "$%"o' o& "$% o*#mn &orm!+•Formwork !/!"%m! (r% (1(i*(*%w$i$ n%%) "o % worked only from

one side+ T$i! o#*) % (n im'or"(n"!(&%"/ on!i)%r("ion &or o*#mn!!i"#("%) (" "uildin$ ed$es andcorners+•1etal systems "/'i(**/ 'ro1i)%ro"ust assem"lies•A!!%m*/ 'ro%!! i! !im'*% (**owin-!i"% o'%r("i1%! "o %om% &(mi*i(r

wi"$ $%(*"$ (n) !(&%"/ (!'%"!+

>ther considerationsC * & d i d f i/ i



Co*#mn &orm! (r% desi$ned for speci/c maximumconcrete pressures+ T$% onr%"% '*(%m%n" r("%! $(1% "o% ()3#!"%) "o k%%' "$% onr%"% 'r%!!#r% wi"$in "$%!'%i7%) *imi"!+

T$% (!!%m*%) &ormwork $(! "o % r%!"r(in%) (" "$% (!%'ro'%r*/ "o (1oi) )i!'*(%m%n", (n) -ro#" *o!! )#rin-onr%"in-+



PREFARICATED FORMWORK



ADVANTAES OF PRE8 FARICATED FORMWORK

• V%r/ *i""*% on8!i"% !ki**%) *(or n%%)%)• T$% (i*i"/ "o r%#!% &orm! %i"$%r (!

in)i1i)#(* #ni"!+• A** 'r%&(ri("%) !/!"%m! (r% )%!i-n

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(""%r%), #r1%) or #"8#'+• Pr%&( &orm! m(/ % !%" in (n/ o

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• In ( 'r%&( !/!"%m r%mo1% (n) r%'*(% &ormi *i7 "i )



!im'*i7%! %r%"ion (n) % !"(r"%) (" (n/ *o("io

• To (**ow &or ( (!"in-!im'*/ r%mo1%) (n) r%o& &orm! (n % ( "ir%!m(in"(in%) &orm! m%(n

• A i- ()1(n% in 'r%&( )%1%*o'm%n" o& -(n- !im'*/ )%7n%) (! "$% -mo1in- o& ( n#m%r o& &

• T$% !#%!! o& -(n- &)%1%*o'm%n" o& %(!/8"o"i%!, m()% %!'%i(**/

"%$ni0#%+• Sin% 'r% &orm! (r% '

'r%i!ion m()%, "$%/ o(1(i*(*% (n) work %0#r%!#*"in- in *ow%r o!"'r%&(ri("%) &orm! wo

3o, "$% !m(** 3o i! ( -"$% !/!"%m "o "$% workm

ANFORMIN



DRAWACK S

• Hi-$ o!" &("or• r%("%r "r(n!'or"("ion o!", )#% "o "$% *(r-%

'i%%!, w$%r% (! "$% r%-#*(r &ormwork (n %"r(n!'or"%) %(!i*/ +

• Too m(n/ 'i%%! in1o*1%) in "$% 'r% &(ri("%)&ormwork

• Pr% &(ri("%) &ormwork, *%(1% 'oor 7ni!$%! (""$% 3oin"! o& "$% &ormin- m%m%r!+

• Pr%8 &( &ormwork )%6%" )#rin- '*(%m%n"+• T$% 7r!" (#!% o& )%6%"ion i! "$% r("% o& '*(in-,

w$i$ i! #!#(**/ "oo &(!"+• I& r%omm%n)%) '*(in- r("%! (r% &o**ow%) (n)

"$%r% i! -oo) !#'%r1i!ion o& '*(%m%n" (n)1ir("in-, "$% 'ro*%m o& )%6%"ion (n %on"ro**%)+

• Wi"$ m(n/ 'r%&( !/!"%m!, '(n%*! (n % r% mo1%) (" )i%r%n" *o("ion! (n) #!%) (! (!"in-'ok%"!+

• T$i! 'ro%)#r% (1oi)! )ro''in- "$% onr%"% (-r%(" )i!"(n% (n) $%*'! "o m(in"(in ( mor%on!"(n" r("% o& '*(%m%n"+

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STEEL ANDALUMINIUM+

DESINED FORSPEED ANDEFFICIENCY+?mo!"*/ mo)#*(r@

LONER LIFE SPAN

T$% *(o#r o!"!(r% HIHER "$(n"$% o!"! &or'ro#rin- r%#!(*%&ormwork+

LESS FLEILE+

TIMER? P*/woo)Or moi!"#r%8r%!i!"(n" P(r"i*%o(r)@+

VERY TIMECONSUMIN+?For *(r-%!"r#"#r%!+@

T$% '*/woo) &(in-$(! ( r%*("i1%*/

SHORT LIFE SPAN+

T$% *(o#r o!"!(r% LOWER "$(n"$% o!"! &or'ro#rin- r%#!(*%&ormwork+

MOST FLEILE

Fr(m% o&o1%r%) OR TIM

Work $(!im#*"(non!"r#"im%

T$% &r(m?I& m()%

(*#mini#; "im

T$% *(oHIHER 'ro#rin&ormwor

T$%r% i!

Ti & R * & & k



Tim% o& R%mo1(* o& &ormwork

Sr.No Structural Member

OPC

(Ordinary Portland Cement)

R

!eam "ide"# $all" % Column" &-' ay"

& Slab (ertical Support" remain" intact) * ay"

' Slab (Complete +orm$or, remoal) ay"

* !eam" (Remoal o0 S1eeting# Prop"remain" intact)

2 ay"

/ !eam" % 3rc1e" (Complete 0orm$or,remoal) (up to 4 m "pan)

* ay"

4 !eam" % 3rc1e" (Complete 0orm$or,remoal) (more t1an 4 m "pan)

& ay"



Formwork &(i*#r%! (r% "$% (#!% o& m(n/ (i)%n"!(n) &(i*#r%! "$(" o#r )#rin- onr%"% on!"r#"ionw$i$ #!#(**/ $(''%n w$%n &r%!$ onr%"% i! '*(%)



w$i$ #!#(**/ $(''%n w$%n &r%!$ onr%"% i! '*(%)

%n%r(**/ !om% #n%4'%"%) %1%n" (#!%! on%m%m%r "o &(i*, "$%n o"$%r! %om% o1%r*o()%) ormi!(*i-n%) (n) "$% %n"ir% &ormwork !"r#"#r%o**('!%!

Im'ro'%r !"ri''in- (n) !$or% r%mo1(*

In()%0#("% r(in-

Vir("ion

Un!"(*% !oi* #n)%r m#)!i**!, !$orin- no" '*#m

In()%0#("% on"ro* o& onr%"% '*(%m%n"

L(k o& (""%n"ion "o &ormwork )%"(i*!

In()%0#("% ro!! r(in- (n) $ori2on"(* r(in- o&!$or%!

Form! !om%"im% o**('!% w$%n "$%ir !$or%!. 3(k(r% )i!'*(%) / "$% 1ir("ion (#!%) /5

'(!!in- "r(9

mo1%m%n" o& work%r! J %0#i'm%n" on "$%&ormwork

"$% %%" o& 1ir("in onr%"% "o on!o*i)("% i"

SAFETY PRECAUTION



SAFETY PRECAUTION

M("%ri(* #!%) &or "$% on!"r#"ion o& &ormwork m#!" &#*7** "$%!'%i7("ion+

Formwork i! 74%) 7rm*/ J 'ro'%r*/

Con!"r#"ion (r%( m#!" % 'ro"%"%) "o 'r%1%n" 1(n)(*i!m o&&ormwork+

W(rnin- !i-n m#!" % '#" #' (" "$% (r%( w$%r% "$% &ormwork i

74%) "o 'r%1%n" %n"r(n% o& '%o'*% "$(" m(/ )(m(-% "$%&ormwork+

T$% &ormwork m#!" % in!'%"%) %&or% "$% onr%"% i! 'o#r%)

STRIKIN MAINTENANCE STORAE OF FORM



STRIKIN, MAINTENANCE, STORAE OF FORMRK

S"rikin- 5A! o*#mn (n) %(m !i)% &ormwork wi** % r%mo1%) %&or% %(m (!o9" &ormwork, 'ro1i!ion m#!" % m()% &or %(!/r%mo1(* (n) in "$% orr%" or)%r+I& %(m (n) !*( !o9" &ormwork i! "o % r%mo1%) %&or% "$% onr%($i%1%) workin- !"r%n-"$, '%rm(n%n" 'ro''in- or !$orin- i! r%0#i

T(k% (r% "o (1oi) )(m(-% "o &ormwork w$i$ i! "o % r% #!%)+ Ei-$r% #!%! m(/ % o"(in%) &rom "im%r &ormwork+

M(in"%n(n% C*%(n &orm! wi"$ !"i r#!$ (n) *%(n o*) w("%r+

U!% !r('%r! on*/ (! ( *(!" r%!or"+K%%' &orm! w%** oi*%) "o 'r%1%n" )%*(min("ion o&'*/woo) or r#!"in- o& !"%%* (n) (*w(/! oi* "$% %)-%!+

S"or(-% o& &orm!An/ &ormwork wi"$ !"%%* om'on%n"! !$o#*) % !"or%) in "$% )r/+A1oi) )ir%" !#n*i-$" on "im%r &orm!+S"or% *%(r o& "$% -ro#n) wi"$o#" "wi!" or %n), (n) k%%' &r%% o& )ir



THANK YOUEUS PITHAWALLA?<@ RITHIKA RAVISHANKAR?=@ EKTA SHAH?=

ARIMA RAPUT?<G@SHIVALI SANAP?=:@ RAESH SHELAKE?=>@

MANASVI RANE?<@ SUVOIT SEN?=<@

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