detailing guide

8/20/2019 Detailing GUIDE

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REINFORCING DETAILING

OF R.C.C MEMBERS

PRESENTED BY

Er.T.RANGARAJAN,B.E,M.Sc(struct.engg),F.I.E,FACCE,LACI,LISSE,LIASE

www.engineeringcivil.com


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WHO IS AN ENGINEER?

Accordin !o "SA Pr#$id#n! H#r%#r! Hoor, '(o '$ n

#nin##r %#*or# (# %#c+# o-i!icin, $idT(# r#! -i%i-i!/ o* !(# #nin##r 0co+r#d !o +#n o* o!(#rro*#$$ion$00i$ !(! (i$ 'or1$ r# o2! in !(# o#n '(#r# --cn $## !(#+.

Hi$ c!$ 0..$!# %/ $!# 0r# in (rd $2%$!nc#$.

H# cnno! %2r/ (i$ +i$!1#$ in !(# r -i1# !(# DOCTORS.

H# cnno! r2# !(#+ in!o !(in ir0..or %-+# !(# 32d#0..-i1#!(# LAWYERS.

H# cnno!, -i1# !(# ARCHITECT, cor (i$ *i2r#$ 'i!( !r##$ nd&in#$.

H# cnno!, -i1# !(# o-i!icin$, $cr##n (i$ $(or!co+in$ %/%-+in (i$ oon#n!$0.nd (o# !(# #o-# 'i-- *or#!. T(#

ENGINEER $i+-/ cnno! d#n/ (# did i!.I* (i$ 'or1$ do no! 'or100(# i$ d+n#d.


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A design engineer’s responsibility shouldinclude assuring the structural safety of thedesign, details, checking shop drawing.

Detailing is as important as design sinceproper detailing of engineering designs is anessential link in the planning and engineeringprocess as some of the most devastingcollapses in history have been caused bydefective connections or DETAII!". Thereare many e#amples e#plained in the book$DE%I"! A!D &'!%T()&TI'! *AI)(E% byDov +aminetky.

Detailing is very important not only for theproper e#ecution of the structures but for thesafety of the structures.

Detailing is necessary not only for the steelstructures but also for the (&& members as itis the translation of all the mathematicale#pression’s and e-uation’s results.


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For the RCC members for most commonly used for buildings wecan divide the detailing for

1. SLABS!"#$ %R !"#$% %'()")*S.+R(C#A)*&LAR,C"RC&LAR,)%)R(C#A)*&LAR'-RA"/SLAB,#R"A)*&LAR (#C0

BALC%)- SLAB,L%F# SLAB,C%R)(R SLAB etc

. B(AS !"#$ %R !"#$% %'()"*S.+S$ALL%! 2 /((' B(AS0

3. C%L&)S.+R(C#A)*&LAR,LS$A'(,#S$A'(,C"RC&LAR,%C#A*%)AL,CR%SS S$A'( etc0

4. F%&)/A#"%)S.

/etailing for gravity loads is di5erent from the lateral loadss6ecially for the S("S"C F%RC(S.

A6art from the detailing for the above there is a di5erentdetailing re7uired for the Rehabilitation and strengthening ofdamaged structures.

!e will now dwell on the /(#A"L")* %F (B(RS F%R #$(*RA8"#- A)/ S%( C%/AL /(#A"L")*S AS '(R "S C%/( "S 139:A)/ "S 43; AS R(


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DO4S 5 DONOT4S FOR DETAILING

DO’S-GENERAL

6. Pr#r# dr'in$ ro#r-/ 5 cc2r!#-/ i* o$$i%-# -%#- #c( %r

nd $(o' i!$ $(# *or c-ri!/.

678

I 98di:678c;c

Cro$$ $#c!ion o* r#!inin '-- '(ic( co--$#d i++#di!#-/ *!#r -cin o* $oi-

%c1*i-- %#c2$# 98 r!(#r !(n 6


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7. Pr#r# %r. Indic!# ro#r cor


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. Con#$!ion o* %r$ $(o2-d %# &oid#d ! oin!$ '(#r#

+#+%#r$ in!#r$#c! nd +1# c#r!in !(! -- r#in. Cn %#

ro#r-/ -c#d.

6. In !(# c$# o* %2nd-#d %r$, -#d $-ic# o* %2nd-#d %r$$(-- %# +d# %/ $-icin on# %r ! !i+# $2c(

indi&id2- $-ic#$ 'i!(in !(# %2nd-# $(-- %# $!#r#d.

66. M1# $2r# !(! (oo1#d nd %#n! 2 %r$ cn %# -c#d

nd ( d#2!# concr#!# ro!#c!ion.


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12. Indicte "" e#$nsi%n, c%nstructi%n nd c%ntrcti%n &%ints

%n $"ns nd $r%'ide deti"s %r suc) &%ints.

1*. +)e "%cti%n % c%nstructi%n &%ints s)"" e t t)e $%int %

iniu s)er $$r%#ite" t id %r ner t)e id $%ints.

It s)"" e %red 'ertic"" nd n%t in s"%$ed nner.

DO’S / BEAMS 0 SLABS

1. )ere s$"ices re $r%'ided in rs, t)e s)"" e , s r s

$%ssi"e, 3 r% t)e secti%ns % #iu stresses nd

s)"" e stggered.

2. ere t)e de$t) % es e#ceeds 456 in cse % es3it)%ut t%rsi%n nd 756 3it) t%rsi%n $r%'ide ce rein.

s $er IS758-2666.

*. De"ecti%n in s"s9es e reduced $r%'iding

c%$ressi%n rein%rceent.

7. On" c"%sed stirru$s s)"" e used %r trns'erse rein. F%reers su&ected t% t%rsi%n nd %r eers "i:e" t% e

su&ected t% re'ers" % stresses s in Seisic %rces.


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@. To cco++od!# %o!!o+ %r$, i! i$ ood rc!ic# !o +1#$#condr/ %#+$ $(--o'#r !(n +in %#+$, ! -#$! %/@++.

Do4$ COL"MNS.6. A r#in*orc#d co-2+n $(-- ( ! -#$! $i %r$ o*

-oni!2din- r#in*orc#+#n! *or 2$in in !rn$r$# (#-ic-r#in*orc#+#n!.


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>. Br$ -r#r !(n >++ di. S(-- no! %# %2nd-#d.

=. L $-ic#$ $(-- %# no! %# 2$#d *or %r$ -r#r !(n

>++ di. Ec#! '(#r# '#-d#d.

@. W(#r# do'#-$ r# ro&id#d, !(#ir di+#!#r $(-- no!#c##d !(# di+#!#r o* !(# co-2+n %r$ %/ +or# !(n

>++.

. W(#r# %#n! 2 %r$ r# ro&id#d, !(#ir con!ri%2!ion

!o'rd$ $(#r r#$i$!nc# $(-- no! %# +or# !(n @K o*

!(# !o!- $(#r !o %# r#$i$!#d. "SE OF SINGEL BENT "PBARSCRANED) ARE NOT ALLOWED IN THE CASE

OF EARTH"AE RESISTANCE STR"CT"RES.


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DETAILING OF SLABS WITHO"T ANY C"T

OR OPENINGS.

T(# %2i-din -n D $(o'$ !(#$-%$ in di**#r#n! -#-$ *or !(#

2ro$# o* #-i+in!in !(# in*-o' o*

rin'!#r in!o !(# roo+ *ro+ !(# o#n!#rrc# nd -$o !(# $2n1#n $-% *or

!oi-#! in *ir$! *-oor.

T(# %2i-din -n D i$ on# in'(ic( !(# c-i#n! $1#d !(# rc(i!#c! !o

ro&id# o#nin -- ro2nd.R#*#r !(# >d

#-#&!ion


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Di**#r#n! $(#$ o* $-%$ 2$#d in !(#

%2i-din$. 8d#r#$$ion *or OT 58 *or $2n1#n $-%$.

Por!ico $-% in #-#&!ion

64


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Mini+2+ nd +.r#in*orc#+#n! K in %#+$, $-%$ nd

co-2+n$ $ #r cod- ro&i$ion$ $(o2-d %# *o--o'#d.

SLABS

I! i$ %#!!#r !o ro&id# + $cin o* 7++8) *or +in

%r$ nd 7@++68) in ord#r !o con!ro- !(# crc1 'id!( nd

$cin.

A +in. o* .7=K $(-- %# 2$#d *or !(# roo* $-%$ $inc# i! i$

$2%3#c!#d !o (i(#r !#+#r!2r#. ri!ion$ !(n !(# *-oor

$-%$. T(i$ i$ r#2ir#d !o !1# cr# o* !#+. di**#r#nc#$.

I! i$ d&i$%-# !o no! !o 2$# ++ %r$ $ +in %r$ $ !(i$

$i# &i-%-# in !(# -oc- +r1#! i$ o* in*#rior no! on-/ 'i!(

r#$#c! !o $i# %2! -$o !(# 2-i!/ $inc# -i1# TATA nd SAIL

r# no! rod2cin !(i$ $i# o* %r.

BEAMS

A +in. o* .7K i$ !o %# ro&id#d *or !(# co+r#$$ion %r$ in

ord#r !o !1# cr# o* !(# d#*-#c!ion.


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T(# $!irr2$ $(-- %# +in.$i# o*

++ in !(# c$# o* -!#r- -od

r#$i$!nc# .T(# (oo1$ $(-- %# %#n! !o 6>@

d#r## .


15/47

Ld;7Ld;7

Ld

crc1

INCORRECT

CORRECT

CLOSE

STIRR"PS

Ld!

Ld!;7

CANTILEER BEAM


16/47

NON ;RISMA+IC BEAM

Ld;7 Ld;7Ld

INCORRECT

CORRECT

CLOSE

STIRR"PS

crc1

Ld!;7

Ld!


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GRID BEAMGRID BEAM

INCORRECT

6.@d6.@d6.@d

C-o$# rin$

Hn#r %r$

S-o# 66

7#!r %r$

>>

d

CORRECT


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D#!i-$ o* Min 5 S#condr/ %#+$

INCORRECT

6.@d6.@d6.@d

C-o$# rin$

Hn#r %r$

>>

d

CORRECT

S#condr/ %#+

Min %#+

S#condr/ %#+

d#r##

Min %#+


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d

6;=OR

6;@ SPAN

6.@d

CORRECT

INCORRECT

d;7Qd;7Co!!)

!!

Ld

d;7

d;7

Ld

LINE OF CRAC

BEAM


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Con!in2o2$ %#+

con!in2o2$ %#+Sn;=

Sn;=Sn;=

Sn;=

incorr#c!

Sn;=

Sn;=

6.@d6.@d

Sn;=

corr#c!

6.@d


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6K

L6

6K CRACCRAC

.L7.L6 L7

SPAN;= SPAN;=

CON+IN


22/47

D

D

CRAC

INCORRECT

NON;RISMA+IC

SEC+ION OF BEAM

D

D

DCORRECT

D

CLOSE RING

CLOSE RING


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COL"MN

INCORRECT

CAN+ILE=ER BEAM ;RO>EC+ING

FROM COL


24/47

CRAC

SLO;ING BEAM

CORRECT

Ld

Ld


25/47

CRACCRAC

INCORRECT

?A


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S+RESSES A+ CORNERS

C

C


27/47

S?EAR AND +ORSION REIN. IN

BEAMS

INCORRECT

Min .7K%d !o con!ro- d#*-#c!ion $

'#-- $ *or $#i$+ic r#2.

%

D6 !o

7++

d

D


28/47

CAN+ILE=ER BEAM I+?

;OIN+ LOAD

CORRECT

INCORRECT

7;>dd

S(#r r#in.

E!r !i#$

Ld

Ld


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o#nin

CORRECT

OPENING IN WEB OF BEAM

crc1crc1

o#nin

INCORRECT

OPENING IN WEB OF BEAM

Ld

d;7 d;7

C-o$#d $!$

*or d;7C-o$#d $!$

*or d;7


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BEAM COL


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CORRECT

S;LICE DE+AIL FOR COL


32/47

REDNO.CLOSE TIES


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+ERMINA+ION OF COL


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BEAM COL. J"NCTIONN-E@+ERIOR

CORRECT

BEAM COL. J"NCTION


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COL


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E-REGION-CON+IN AUL6;>

7d

@+++

S!irr2 $cinUd;= or

6++ or di '(ic(

#r i$ !(# -#$!

7d7d 7d$!:+d;7 $!:+d;7

CORRECT


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INCORRECT

FOO+ING-DE+AILS(INDE;ENDEN+

CORRECT

COER TO

STARTER

STARTER

BARS

COL"MN

BARS

NAT"RAL

G.L

Ld!

L%>8 SIDE COER

Ld!COER@++

IF .c.c %#-o'

or @++

Min.>

+;ICAL REIN DE+AILS OF


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+;ICAL REIN DE+AILS OF

?AMMER FO


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SEC+ION OF +RENC?

CRAC

INCORRECTINCORRECT

CORRECT

LdLd

Ld


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S+AIRCASE-I+? AIS+ SLAB

INCORRECT

CORRECT

Ld+in)E!r %r

Ld+in)

Ld+in)


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Min %r

Di$!.

Min %r

A-!#rn!# 6

SLABLESS S+AIRCASE

S SS S C S


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Min %r

A-!#rn!# 7

AU.7@L

LU(orion!- $n

SLABLESS S+AIRCASE


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DE=ELO;MEN+ LENG+? OF BARS

SLNO BARDIA. TENSION++ COMPRESSION REMARS

6 >. >6.

7 6 =. >.

> 67 @=. =@6.

= 6 @7. 7.

@ 7 =. @7.

77 6>=. 7.

7@ 66@. =.

7 6>6. 6@>.

>7 6@=. 67>.

FOR A CONCRE+E GRADE M26 0S+EEL S+RENG+? F715

APPROIMATELY "SE @di FOR TENSION


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CONCL


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REFERENCES

6. HANDBOO ON CONCRETE REINFORCEMENT ANDDETAILING=S5T)


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. IS7@7 CODE OF PRACTICE FOR BENDING AND

FIING OF BARS FOR CONCRETE REINFORCEMENT.

. IS6>7.

6. IS=>7.66. IS=@7

67. REINFORCED HAND BOO BY REYNOLD.


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THAN YO".

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