This document is the Indian Standard for uncoated, stress relieved, low relaxation seven-wire strands for prestressed concrete. It covers requirements for manufacture, supply and testing of these strands. This standard was revised to incorporate modifications from use by manufacturers and users. The revision includes methods for measuring strand properties and minimizing difficulties during mechanical testing. Consideration is given to international standards and practices in other countries.

1. iw
iwoZ
oZ iz
izfrcf
frcfyr
yr oa
oaQØhV
QØhV os
osQ f
Q fy,
y, ruko
ruko
jfgr
jfgr de
de f'kf
f'kfFkyu
Fkyu okys
okys vysfir
vysfir
lkr
lkr-
-Iykb
IykbZZ os
osQ L
Q LVª
VªSSaaM
M —
— fof'
fof'kf"V
kf"V
(
( ig
igyk
yk iq
iquj
ujh{
h{k.
k.kk )
)
Uncoated Stress Relieved Low
Uncoated Stress Relieved Low
Relaxation Seven-Wire (Ply)
Relaxation Seven-Wire (Ply)
Strand for Prestressed
Strand for Prestressed
Con
Concrete
crete — S
— Speci
pecifica
fication
tion
(
( Fi
Firs
rst
t Re
Revi
visi
sion
on )
)
ICS 77.140.15; 91.080.40
ICS 77.140.15; 91.080.40
IS 14268 : 2017
IS 14268 : 2017
Hkkjrh; ekud
Hkkjrh; ekud
Indian Standard
Indian Standard
Price Group 5
Price Group 5
July 2017
July 2017
Hkkjrh; ekud C;wjks
Hkkjrh; ekud C;wjks
B U R E
B U R E A U
A U O F
O F I N D I A
I N D I AN
N S T
S T A N D
A N D A
A R D S
R D S
ekud
ekud Hkou]
Hkou] 9
9 cgknqj'kkg
cgknqj'kkg T+kiQj
T+kiQj ekxZ]
ekxZ] ubZ
ubZ fnYyh&110002
fnYyh&110002
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI-110002
NEW DELHI-110002
www.bis.org.in www.standardsbis.in
www.bis.org.in www.standardsbis.in
© BIS 2017
© BIS 2017

2. Concrete Reinforcement Sectional Committee, CED 54
Concrete Reinforcement Sectional Committee, CED 54
FOREWORD
FOREWORD
This Indian Standard (First Revision) was adopted by the Bureau of Indian Standards, after the draft finalized by
This Indian Standard (First Revision) was adopted by the Bureau of Indian Standards, after the draft finalized by
the Concrete Reinforcement Sectional Committ
the Concrete Reinforcement Sectional Committee had been approved by the Civil Engineering Division Council.
ee had been approved by the Civil Engineering Division Council.
The standard was published in 1995 to cover the requiremen
The standard was published in 1995 to cover the requirements of low relaxation seven-ply strands for pr
ts of low relaxation seven-ply strands for prestressed
estressed
concrete. These types of strands are capable of developing and retaining large concentrated prestressing forces.
concrete. These types of strands are capable of developing and retaining large concentrated prestressing forces.
The low relaxation property is achieved by a process called ‘stabilising’. This is essentially a hot stretching
The low relaxation property is achieved by a process called ‘stabilising’. This is essentially a hot stretching
process, in which prestressing strand is subjected to a
process, in which prestressing strand is subjected to a pre-determined tension during stress-reliev
pre-determined tension during stress-relieving heat treatment.
ing heat treatment.
This results in linear hardening of the steel which substantially increases the resistance to creep and thereby
This results in linear hardening of the steel which substantially increases the resistance to creep and thereby
reduces the relaxation losses.
reduces the relaxation losses.
This revision has been taken up with a view of incorporating modifications found necessary as a result of use of
This revision has been taken up with a view of incorporating modifications found necessary as a result of use of
this standard both by the manufacturers and the users. Time and again strand biting during tensile testing of
this standard both by the manufacturers and the users. Time and again strand biting during tensile testing of
strands have been reported on account of using improper gripping arrangements. In order to ensure that the
strands have been reported on account of using improper gripping arrangements. In order to ensure that the
criticality of proper gripping of strand to get correct test results is understood and applied by the industry, a need
criticality of proper gripping of strand to get correct test results is understood and applied by the industry, a need
was felt to take up revision of the standard suggesting various gripping procedures and methods for minimizing
was felt to take up revision of the standard suggesting various gripping procedures and methods for minimizing
these difficulties. In this revision, following modifications have been incorporated:
these difficulties. In this revision, following modifications have been incorporated:
a)
a) Meth
Method for mea
od for measure
surement o
ment of lengt
f length of lay of str
h of lay of strand ha
and has been in
s been incorp
corporat
orated,
ed,
b)
b) Method fo
Method for measur
r measurement of no
ement of nominal dia
minal diameter an
meter and differe
d difference in diam
nce in diameter of ce
eter of central wire a
ntral wire and surrou
nd surrounding
nding
wire of strand has been incorporated,
wire of strand has been incorporated,
c)
c) Method fo
Method for determi
r determining nomi
ning nominal cros
nal cross-sectio
s-sectional area
nal area and nomi
and nominal mass
nal mass per unit
per unit length of
length of strand ha
strand has
s
been incorporated,
been incorporated,
d)
d) 1.0 perce
1.0 percent exten
nt extension meth
sion method for de
od for determining
termining elongatio
elongation has be
n has been elab
en elaborated to
orated to provide
provide more clari
more clarity,
ty,
e)
e) Methods
Methods to be
to be adopted
adopted for minim
for minimizing di
izing difficulties
fficulties of prema
of premature fai
ture failure of
lure of the tes
the test spec
t specimens w
imens while
hile
conducting mechanical tests on strands have been incorporated, and
conducting mechanical tests on strands have been incorporated, and
f)
f) Vari
Various met
ous methods of gr
hods of grippi
ipping have be
ng have been sugg
en suggeste
ested for tens
d for tensile tes
ile testing of st
ting of strand
rands.
s.
In the formulation of this standard, due weightage has been given to international coordination among the standards
In the formulation of this standard, due weightage has been given to international coordination among the standards
and practices prevailing in different countries in addition to relating it to the practices in the field in this country.
and practices prevailing in different countries in addition to relating it to the practices in the field in this country.
Assistance has been derived from the following International Standards in the formulation of this standard:
Assistance has been derived from the following International Standards in the formulation of this standard:
ISO 6934-1 : 19
ISO 6934-1 : 1991
91 Steel f
Steel for the pre
or the prestres
stressing of c
sing of concret
oncrete — Part 1: G
e — Part 1: General
eneral require
requirements
ments
ISO 6934
ISO 6934-4 : 1991
-4 : 1991 Steel
Steel for the
for the prestr
prestressin
essing of co
g of concrete
ncrete — Part 4
— Part 4: Stran
: Strand
d
Provisions in this standard are at variance with similar provisio
Provisions in this standard are at variance with similar provisions in the above international standards, in view of
ns in the above international standards, in view of
the following:
the following:
a)
a) Geographi
Geographical facto
cal factors which
rs which determine
determine the earth
the earthquake zo
quake zoning and
ning and conseque
consequently the
ntly the structura
structural design
l design
considerations, structural design method/principles adopted, the design parameters and required materi
considerations, structural design method/principles adopted, the design parameters and required material
al
properties;
properties;
b)
b) Technolog
Technological facto
ical factors assoc
rs associated with
iated with the proce
the process of manu
ss of manufacture of t
facture of the product
he product, which inf
, which influence th
luence the
e
product characteristics; and
product characteristics; and
c)
c) Construct
Construction techn
ion techniques and
iques and practice
practices adopted
s adopted in the cou
in the country, the e
ntry, the equipment u
quipment used and t
sed and the skill l
he skill level of
evel of
construction workers which also influence the product characteristics.
construction workers which also influence the product characteristics.
(
(Continued
Continued on third cover
on third cover)
)

3. 1
1
IS 14268 : 2017
IS 14268 : 2017
Indian Stand
Indian Standard
ard
UNCOATED STRESS RELIEVED LOW RELAXATION
UNCOATED STRESS RELIEVED LOW RELAXATION
SEVEN-WIRE (PLY) STRAND FOR PRESTRESSED
SEVEN-WIRE (PLY) STRAND FOR PRESTRESSED
CONCRETE — SPECIFICATION
CONCRETE — SPECIFICATION
(
( F
Fi
ir
rs
st
t R
Re
ev
vi
is
si
io
on
n )
)
1 SCOPE
1 SCOPE
This standard covers the requirements for
This standard covers the requirements for manufacture,
manufacture,
supply and testing of uncoated, stress relieved, low
supply and testing of uncoated, stress relieved, low
relaxation seven-wire (ply) steel strands for
relaxation seven-wire (ply) steel strands for prestressed
prestressed
concrete.
concrete.
2 REFERENCES
2 REFERENCES
The standards listed below contain provisions, which
The standards listed below contain provisions, which
through reference in this text constitute provisions of
through reference in this text constitute provisions of
this standard. At the time of publication, the editions
this standard. At the time of publication, the editions
indicated were valid. All standards are subject to
indicated were valid. All standards are subject to
revision, and parties to agreements based on this
revision, and parties to agreements based on this
standard are encouraged to investigate the possibility
standard are encouraged to investigate the possibility
of applying the most recent editions of the standards
of applying the most recent editions of the standards
listed below:
listed below:
IS No.
IS No. Title
Title
2
22
28
8 M
Me
et
th
ho
od
ds
s o
of
f c
ch
he
em
mi
ic
ca
al
l a
an
na
al
ly
ys
si
is
s o
of
f s
st
te
ee
el
l:
:
(P
(Par
art
t 3)
3) :
: 19
1987
87 Det
Determ
ermina
inatio
tion of
n of pho
phosph
sphoru
orus by
s by
alkalimetric method (
alkalimetric method (third revision
third revision)
)
(Pa
(Part
rt 9)
9) :
: 198
1989
9 Determi
Determination of sulph
nation of sulphur in plain
ur in plain
carbon steel by evaluation method
carbon steel by evaluation method
(For sulphur 0.01 to 0.25 percent)
(For sulphur 0.01 to 0.25 percent)
(
(third revision
third revision)
)
13
138
87 : 19
7 : 1993
93 Ge
Gene
nera
ral r
l re
equ
quir
irem
emen
ents
ts fo
for t
r the
he su
supp
pply
ly
of metallurgical materials (
of metallurgical materials (second
second
revision
revision)
)
16
1608
08 : 2
: 200
005
5 Me
Meta
tall
llic
icma
mate
teri
rial
als
s —
— Te
Tens
nsil
ile
e te
test
stin
ing
g
at ambient temperature (
at ambient temperature (third
third
revision
revision)
)
1
19
95
56
6 G
Gl
lo
os
ss
sa
ar
ry
y o
of
f t
te
er
rm
ms
s r
re
el
la
at
ti
in
ng
g t
to
o i
ir
ro
on
n a
an
nd
d
steel:
steel:
(Pa
(Part 1
rt 1) :
) : 197
1976
6 Gen
Genera
eral
l met
metall
allurgy
urgy,
, hea
heat
t trea
treatmen
tment
t
and testing (
and testing (first revision
first revision)
)
(P
(Par
art 2)
t 2) : 19
: 1976
76 St
Stee
eel m
l mak
akin
ing (
g (first revision
first revision)
)
(Part
(Part 3) :
3) : 1975
1975 Hot
Hot rolled
rolled steel
steel produc
products
ts (exclu
(excluding
ding
sheet and strip) (
sheet and strip) (first revision
first revision)
)
(Pa
(Part 5
rt 5) : 1
) : 1976
976 Bri
Bright s
ght stee
teel bar an
l bar and ste
d steel wi
el wire (
re (first
first
revision
revision)
)
3 TERMINOLOGY
3 TERMINOLOGY
For the purpose of this standard, the definitions given
For the purpose of this standard, the definitions given
in IS 1956 (Part 1), IS 1956 (Part 2), IS 1956 (Part 3)
in IS 1956 (Part 1), IS 1956 (Part 2), IS 1956 (Part 3)
and IS 1956 (Part 5), and the following shall apply.
and IS 1956 (Part 5), and the following shall apply.
3.1
3.1 Breaking
Breaking Load
Load — The maximum load reached
— The maximum load reached
in a tensile test of the strand.
in a tensile test of the strand.
3.2
3.2 Coil
Coil or
or Reel
Reel — One continuous length of strand
— One continuous length of strand
in the form of a coil or reel.
in the form of a coil or reel.
3.3 Elongation
3.3 Elongation — The increase in length of a tensile
— The increase in length of a tensile
test piece under stress. In case of
test piece under stress. In case of strands, the elongation
strands, the elongation
is measured immediately prior to fracture of any of
is measured immediately prior to fracture of any of
the component-wir
the component-wires and is expressed as
es and is expressed asthe percentage
the percentage
of the original gauge length of a strand test piece.
of the original gauge length of a strand test piece.
3.4
3.4 Length
Length of
of Lay
Lay — The distance (measured along
— The distance (measured along
a straight line parallel to the strand) in which a wire
a straight line parallel to the strand) in which a wire
forms one complete helix.
forms one complete helix.
3.5 Parcel
3.5 Parcel — Any quantity of finished strand
— Any quantity of finished strand
presented for examination and test at any one time.
presented for examination and test at any one time.
3.6
3.6 Production
Production Length
Length — The maximum length of
— The maximum length of
strand which can be manufactured, with or without
strand which can be manufactured, with or without
welds, being made after drawing, in any of its
welds, being made after drawing, in any of its
component wire.
component wire.
3.7
3.7 Proof
Proof Load
Load — The load which produces a
— The load which produces a residual
residual
strain of 0.2 percent of the original gauge length (non
strain of 0.2 percent of the original gauge length (non-
-
proportional elongation).
proportional elongation).
3.8
3.8 Seven-Wire
Seven-Wire (Ply)
(Ply) Strand
Strand — Any length of
— Any length of
finished material which comprises six wires (plies)
finished material which comprises six wires (plies)
formed together in helical form around a central wire.
formed together in helical form around a central wire.
4 MANUFACTURE
4 MANUFACTURE
4.1 Wire
4.1 Wire
4.1.1
4.1.1 The base metal shall be carbon steel of such
The base metal shall be carbon steel of such
quality that when drawn to wire, fabricated into strand
quality that when drawn to wire, fabricated into strand
and then stress relieved, shall have the properties and
and then stress relieved, shall have the properties and
characteristics prescribed in this standard.
characteristics prescribed in this standard.
4.1.2
4.1.2 The element wire to be used for strand shall be
The element wire to be used for strand shall be
cold-drawn from plain carbon steel (
cold-drawn from plain carbon steel (see
see 4.1.1
4.1.1) and shall
) and shall
contain not more than 0.040 percent sulphur and not
contain not more than 0.040 percent sulphur and not
more than 0.040 percent of phosphorus, when tested
more than 0.040 percent of phosphorus, when tested
in accordance with IS 228 (Part 9) and IS 228 (Part 3),
in accordance with IS 228 (Part 9) and IS 228 (Part 3),
respectively.
respectively.
4.1.3
4.1.3 The wire used in the manufacture of the strand
The wire used in the manufacture of the strand
shall be well and cleanly drawn to the specified
shall be well and cleanly drawn to the specified
dimensions and shall be sound and free from splits,
dimensions and shall be sound and free from splits,
surface flaws, piping and any other defect likely to
surface flaws, piping and any other defect likely to

4. 2
2
IS 14268 : 2017
IS 14268 : 2017
impair its use in the manufacture of the strand and the
impair its use in the manufacture of the strand and the
performance of the strand in prestressed concrete.
performance of the strand in prestressed concrete.
4.2 Strand
4.2 Strand
The seven-wires (plies) strand shall have a centre wire
The seven-wires (plies) strand shall have a centre wire
at least 1.5 percent greater in diameter than the
at least 1.5 percent greater in diameter than the
surrounding wires enclosed tightly by six helically
surrounding wires enclosed tightly by six helically
placed outer wires with a uniform length of lay of at
placed outer wires with a uniform length of lay of at
least 12 times but not more than 16 time
least 12 times but not more than 16 times of the nominal
s of the nominal
diameter of the strand. The wires in the strand shall be
diameter of the strand. The wires in the strand shall be
so formed that they shall not fly out of position when
so formed that they shall not fly out of position when
the strand is cut without seizing.
the strand is cut without seizing. The length of lay of
The length of lay of
strand, nominal diameter of seven-wire (ply) strand
strand, nominal diameter of seven-wire (ply) strand
and percentage difference in diameter of centre wire
and percentage difference in diameter of centre wire
and surrounding wire of seven-wire (ply) strand shall
and surrounding wire of seven-wire (ply) strand shall
be measured in accordance with the method given in
be measured in accordance with the method given in
Annex A.
Annex A.
4.3 Joints
4.3 Joints
4.3.1
4.3.1 There shall be no strand joints or strand splices
There shall be no strand joints or strand splices
in any length of the completed strand unless specifically
in any length of the completed strand unless specifically
permitted by the purchaser.
permitted by the purchaser.
4.3.2
4.3.2 During process of manufacture of individual
During process of manufacture of individual
wires for stranding, welding is permitted only prior to
wires for stranding, welding is permitted only prior to
or at the time of last heat treatment.
or at the time of last heat treatment.
4.3.3
4.3.3 During fabrication of the
During fabrication of the seven-wire (ply) strand,
seven-wire (ply) strand,
butt-welded joints may be made in
butt-welded joints may be made in the individual wires,
the individual wires,
provided there is not more than one such joint in any
provided there is not more than one such joint in any
45
45 m section of th
m section of the completed s
e completed strand.
trand.
NOTE — When specifically ordered as weldless grade, a
NOTE — When specifically ordered as weldless grade, a
product free of welds shall be supplied. When this grade is
product free of welds shall be supplied. When this grade is
specified, no welds or joints are
specified, no welds or joints are permitted except as detailed
permitted except as detailed
in
in 4.3.2
4.3.2.
.
4.4
4.4 Treatment of
Treatment of Strand
Strand
4.4.1
4.4.1 After stranding, all strands shall be subjected to
After stranding, all strands shall be subjected to
a continuous thermo-mechanical treatment to produce
a continuous thermo-mechanical treatment to produce
the prescribed mechanical properties.
the prescribed mechanical properties.
4.4.2
4.4.2 Temper colours that may result from the thermal
Temper colours that may result from the thermal
operation are considered normal for the finished
operation are considered normal for the finished
appearance of this strand.
appearance of this strand.
4.4.3
4.4.3 After thermo-mechanical treatment, the strand
After thermo-mechanical treatment, the strand
shall be reformed into coils or wound on to reels,
shall be reformed into coils or wound on to reels,
having core diameter of sufficient size and in any case
having core diameter of sufficient size and in any case
not less than 600 mm to ensure that the strand will lay
not less than 600 mm to ensure that the strand will lay
out straight.
out straight.
4.5
4.5 Workmanship
Workmanship and F
and Finish
inish
The finished strand shall be uniform in diameter and
The finished strand shall be uniform in diameter and
shall be free from injuries, flaws and imperfections.
shall be free from injuries, flaws and imperfections.
Slight rusting, provided it is not suff
Slight rusting, provided it is not sufficient to cause pits
icient to cause pits
visible to the naked eye, shall not be a cause for
visible to the naked eye, shall not be a cause for
rejection.
rejection.
5 CLASS
5 CLASS
The strand shall be either Class 1 or Cl
The strand shall be either Class 1 or Class 2 depending
ass 2 depending
on the breaking strength of the str
on the breaking strength of the strand given in Table 1.
and given in Table 1.
6
6 DIMENSION, TO
DIMENSION, TOLERANCE, UNIT
LERANCE, UNIT WEIGHT
WEIGHT
AND PHYSICAL REQUIREMENTS
AND PHYSICAL REQUIREMENTS
6.1
6.1 The nominal diameter, tolerance, nominal cross-
The nominal diameter, tolerance, nominal cross-
sectional area and nominal mass per unit length of the
sectional area and nominal mass per unit length of the
strand shall be as given in Table 2.
strand shall be as given in Table 2.
6.1.1
6.1.1The nominal diameter of strand shall be measured
The nominal diameter of strand shall be measured
across the crown of the wires and in accordance with
across the crown of the wires and in accordance with
the method given in Annex A.
the method given in Annex A.
6.2
6.2 Physical
PhysicalRequirem
Requirements o
ents or Mech
r Mechanical
anicalProperties
Properties
6.2.1
6.2.1 General
General
While conducting the tests for physical requirements
While conducting the tests for physical requirements
as specified in
as specified in 6.2.2
6.2.2 to
to 6.2.4
6.2.4, premature failure of the
, premature failure of the
test specimens may result if there is any appreciable
test specimens may result if there is any appreciable
notching, cutting or bending of the specimen by the
notching, cutting or bending of the specimen by the
gripping devices of the testing machine. Errors in
gripping devices of the testing machine. Errors in
testing may result if all the wires constituting the strand
testing may result if all the wires constituting the strand
Table 1 Physical Properties
Table 1 Physical Properties
(
(Clauses
Clauses 5, 6.2.2.1, 6.2.2.2
5, 6.2.2.1, 6.2.2.2 and
and 6.2.3)
6.2.3)
S
Sl
l C
Cl
la
as
ss
s N
No
om
mi
in
na
al
l D
Di
ia
a B
Br
re
ea
ak
ki
in
ng
g S
St
tr
re
en
ng
gt
th
h 0
0.
.2
2 P
Pe
er
rc
ce
en
nt
t P
Pr
ro
oo
of
f L
Lo
oa
ad
d
N
No
o.
. o
of
f S
St
tr
ra
an
nd
d o
of
f S
St
tr
ra
an
nd
d (
(9
90
0 P
Pe
er
rc
ce
en
nt
t o
of
f B
Br
re
ea
ak
ki
in
ng
g S
St
tr
re
en
ng
gt
th
h)
)
Min
Min Min
Min
m
mm
m k
kN
N k
kg
gf
f k
kN
N k
kg
gf
f
(
(1
1)
) (
(2
2)
) (
(3
3)
) (
(4
4)
) (
(5
5)
) (
(6
6)
) (
(7
7)
)
i
i)
) 9
9.
.5
5 8
8 9
9.
.0
0 9
9 0
07
78
8 8
80
0.
.1
1 8
8 1
17
70
0
i
ii
i)
) 1
11
1.
.1
1 1
12
20
0.
.1
1 1
12
2 2
25
50
0 1
10
08
8.
.1
1 1
11
1 0
02
26
6
iii)
iii)
1
1
1
12
2.
.7
7 1
16
60
0.
.1
1 1
16
6 3
33
30
0 1
14
44
4.
.1
1 1
14
4 6
69
98
8
i
iv
v)
) 1
15
5.
.2
2 2
24
40
0.
.2
2 2
24
4 5
50
00
0 2
21
16
6.
.2
2 2
22
2 0
05
52
2
v
v)
) 9
9.
.5
5 1
10
02
2.
.3
3 1
10
0 4
43
34
4 9
92
2.
.1
1 9
9 3
39
94
4
vi)
vi)
2
2
1
11
1.
.1
1 1
13
37
7.
.9
9 1
14
4 0
06
65
5 1
12
24
4.
.1
1 1
12
2 6
65
58
8
v
vi
ii
i)
) 1
12
2.
.7
7 1
18
83
3.
.7
7 1
18
8 7
73
37
7 1
16
65
5.
.3
3 1
16
6 8
86
60
0
v
vi
ii
ii
i)
) 1
15
5.
.2
2 2
26
60
0.
.7
7 2
26
6 5
59
92
2 2
23
34
4.
.6
6 2
23
3 9
92
29
9
NOTE — The mod
NOTE — The modulus of elasti
ulus of elasticity is to be t
city is to be taken as 195
aken as 195 ±
± 10 kN/mm
10 kN/mm2
2
, unless otherwise indicated by the manufacturer.
, unless otherwise indicated by the manufacturer.

5. 3
3
IS 14268 : 2017
IS 14268 : 2017
are not loaded uniformly. In order to minimize these
are not loaded uniformly. In order to minimize these
difficulties, the following should be adopted:
difficulties, the following should be adopted:
a)
a) Leng
Length o
th of gri
f grip sh
p should
ould be a
be at lea
t least
st equa
equal to
l to one
one
lay length of the strand being tested,
lay length of the strand being tested,
b)
b) Wed
Wedge an
ge and ba
d barre
rrel typ
l type o
e of gri
f grips
ps sho
should b
uld be
e
avoided,
avoided,
c
c)
) Gri
Grip jaw
p jaws s
s shou
hould be s
ld be semi
emi-ci
-circ
rcula
ular wit
r with
h
serrations for developing adequate grip and
serrations for developing adequate grip and
ensuring no slippage. The above method of
ensuring no slippage. The above method of
gripping along with other suggested methods
gripping along with other suggested methods
has been described in Annex C,
has been described in Annex C,
d)
d) Gri
Grippi
pping for
ng force s
ce shou
hould be de
ld be devel
velope
oped eit
d either
her
hydraulically or pneumatically,
hydraulically or pneumatically,
e)
e) Add
Additi
itiona
onal in
l inser
serts m
ts may b
ay be us
e used t
ed to pre
o preven
vent
t
biting of wire surface, and
biting of wire surface, and
f)
f) Loa
Load s
d shou
hould
ld be
be app
applie
lied
d gra
gradu
dual
ally.
ly.
6.2.1.1
6.2.1.1 Tests in which fracture of any of the wires
Tests in which fracture of any of the wires
occur within a distance of 3 mm from the jaws of the
occur within a distance of 3 mm from the jaws of the
machine shall be discarded, if the results do not comply
machine shall be discarded, if the results do not comply
with the requirements of this standard. In such cases
with the requirements of this standard. In such cases
the test shall be repeated.
the test shall be repeated.
6.2.2
6.2.2 Breaking Strength and 0.2 Percent Proof Load
Breaking Strength and 0.2 Percent Proof Load
6.2.2.1
6.2.2.1 The breaking strength and 0.2 percent proof
The breaking strength and 0.2 percent proof
load of the strand shall be determined in accordance
load of the strand shall be determined in accordance
with IS 1608 and shall be not less than the values
with IS 1608 and shall be not less than the values
specified in Table 1.
specified in Table 1.
6.2.2.2
6.2.2.2 Alternatively by mutual agreement between
Alternatively by mutual agreement between
the purchaser and the manufacturer, the load at
the purchaser and the manufacturer, the load at
1.0
1.0 percent extens
percent extension may be determined. In this test,
ion may be determined. In this test,
an initial load equivalent to 10 percent of specified
an initial load equivalent to 10 percent of specified
minimum breaking streng
minimum breaking strength shall be applied to the test
th shall be applied to the test
piece and a sensitive extensometer then attached. The
piece and a sensitive extensometer then attached. The
dial of the latter shall be adjusted to read 0.001 mm/
dial of the latter shall be adjusted to read 0.001 mm/
mm of the gauge length to represent the extension due
mm of the gauge length to represent the extension due
to the initial load. The load shall be increased until the
to the initial load. The load shall be increased until the
extensometer shows an extension corresponding to 1.0
extensometer shows an extension corresponding to 1.0
percent. The load at this extension shall not be less
percent. The load at this extension shall not be less
than the minimum 0.2 percent proof load specified in
than the minimum 0.2 percent proof load specified in
Table 1. In case of dispute, 0.2 percent proof load shall
Table 1. In case of dispute, 0.2 percent proof load shall
apply.
apply.
6.2.3
6.2.3 Elongation
Elongation
The total elongation under load shall not be less than
The total elongation under load shall not be less than
3.5 percent on a minimum gauge length of 600 mm.
3.5 percent on a minimum gauge length of 600 mm.
The total elongation shall be measured by a suitable
The total elongation shall be measured by a suitable
extensometer which is attached to the test piece, after
extensometer which is attached to the test piece, after
an initial load equivalent to 10 percent of the required
an initial load equivalent to 10 percent of the required
minimum breaking load as specified in Table 1 has
minimum breaking load as specified in Table 1 has
been applied.
been applied.
The dial of the extensometer shall be adjusted to read
The dial of the extensometer shall be adjusted to read
0.001 mm/mm of the initial gauge length,
0.001 mm/mm of the initial gauge length, G
G0
0 to
to
represent the extension due to the init
represent the extension due to the initial load. The load
ial load. The load
shall be increased until the extensometer shows an
shall be increased until the extensometer shows an
extension corresponding to 1.0 percent. The reading
extension corresponding to 1.0 percent. The reading
on the measuring scale mounted on the machine shall
on the measuring scale mounted on the machine shall
be noted as
be noted as R
R1
1 or the gauge length between th
or the gauge length between the jaws of
e jaws of
the machine shall be measured with a measuring tape
the machine shall be measured with a measuring tape
as
as G
G1
1.
.
Following an extension of 1.0 percent, the
Following an extension of 1.0 percent, the
extensometer may be removed. The loading shall be
extensometer may be removed. The loading shall be
continued either till at least any one wire of the strand
continued either till at least any one wire of the strand
breaks or to ultimate failure. Once the wire break
breaks or to ultimate failure. Once the wire breaks, the
s, the
breaking load on the machine shall be noted and the
breaking load on the machine shall be noted and the
machine shall be stopped. The second reading on the
machine shall be stopped. The second reading on the
measuring scale shall be noted as
measuring scale shall be noted as R
R2
2 or the gauge length
or the gauge length
at the time of breaking of wire between two grips shall
at the time of breaking of wire between two grips shall
be measured as
be measured as G
G2
2. The elongation value is then
. The elongation value is then
Table 2
Table 2 Dimensions, Tolerances and Mass
Dimensions, Tolerances and Mass of Seven-Wire Strands
of Seven-Wire Strands
(
(Clause
Clause 6.1)
6.1)
S
Sl
l C
Cl
la
as
ss
s N
No
om
mi
in
na
al
l D
Di
ia
a T
To
ol
le
er
ra
an
nc
ce
e N
No
om
mi
in
na
al
l A
Ar
re
ea
a N
No
om
mi
in
na
al
l M
Ma
as
ss
s
N
No
o.
. o
of
f S
St
tr
ra
an
nd
d o
of
f S
St
tr
ra
an
nd
d o
of
f S
St
tr
ra
an
nd
d
m
mm
m m
mm
m m
mm
m2
2
kg/km
kg/km
(
(1
1)
) (
(2
2)
) (
(3
3)
) (
(4
4)
) (
(5
5)
) (
(6
6)
)
i
i)
) 9
9.
.5
5 ±
± 0
0.
.4
40
0 5
51
1.
.6
6 4
40
05
5
i
ii
i)
) 1
11
1.
.1
1 ±
± 0
0.
.4
40
0 6
69
9.
.7
7 5
54
48
8
iii)
iii)
1
1
1
12
2.
.7
7 ±
± 0
0.
.4
40
0 9
92
2.
.9
9 7
73
30
0
i
iv
v)
) 1
15
5.
.2
2 ±
± 0
0.
.4
40
0 1
13
39
9.
.4
4 1
1 0
09
94
4
v
v)
) 9
9.
.5
5 +
+ 0
0.
.6
66
6 5
54
4.
.8
8 4
43
32
2
– 0.15
– 0.15
vi)
vi)
2
2
1
11
1.
.1
1 +
+ 0
0.
.6
66
6 7
74
4.
.2
2 5
58
82
2
– 0.15
– 0.15
v
vi
ii
i)
) 1
12
2.
.7
7 +
+ 0
0.
.6
66
6 9
98
8.
.7
7 7
77
75
5
– 0.15
– 0.15
v
vi
ii
ii
i)
) 1
15
5.
.2
2 +
+ 0
0.
.6
66
6 1
14
40
0.
.0
0 1
1 1
10
02
2
– 0.15
– 0.15
NOTE — The nominal cross-sectional area and the nominal mass of strand are given for information only. The method for measuring
NOTE — The nominal cross-sectional area and the nominal mass of strand are given for information only. The method for measuring
nominal cross-sec
nominal cross-sectional area and the
tional area and the nominal mass per unit length of
nominal mass per unit length of the strand is given in
the strand is given in Annex B.
Annex B.

6. 4
4
IS 14268 : 2017
IS 14268 : 2017
determined by the movement between the jaw
determined by the movement between the jaw gripping
gripping
the test piece on the new base length of jaw-to-jaw
the test piece on the new base length of jaw-to-jaw
distance to which will be added the
distance to which will be added the value of 1.0 percent
value of 1.0 percent
determined by the extensometer.
determined by the extensometer.
2
2 1
1
0
0
–
–
E
El
lo
on
ng
ga
at
ti
io
on
n,
, i
in
n p
pe
er
rc
ce
en
nt
t =
= 1
1.
.0
0 +
+ ×
×1
10
00
0
R
R R
R
G
G

 


 


 

or
or
2
2 1
1
0
0
E
El
lo
on
ng
ga
at
ti
io
on
n,
, i
in
n p
pe
er
rc
ce
en
nt
t 1
1.
.0
0 1
10
00
0
G
G G
G
G
G

 




 
 


 


 

6.2.4
6.2.4 Relaxation Properties
Relaxation Properties
6.2.4.1
6.2.4.1 Low relaxation strand, when initially loaded
Low relaxation strand, when initially loaded
to 70 percent of specified minimum breaking strength
to 70 percent of specified minimum breaking strength
of the strand, shall have relaxation losses of not more
of the strand, shall have relaxation losses of not more
than 1.8 percent after 100 h and not more than 2.5
than 1.8 percent after 100 h and not more than 2.5
percent after 1 000 h when tested under the conditions
percent after 1 000 h when tested under the conditions
given in
given in 6.2.4.2
6.2.4.2 to
to 6.2.4.8
6.2.4.8.
.
Relaxation test for 1 000 h shall be a type approval
Relaxation test for 1 000 h shall be a type approval
test and shall be carried out at least once in a year or
test and shall be carried out at least once in a year or
whenever there is any change in the process of
whenever there is any change in the process of
manufacture, for each type of strand.
manufacture, for each type of strand.
6.2.4.2
6.2.4.2 If required, the manufacturer shall provide
If required, the manufacturer shall provide
relaxation evidence from the manufacturer’s records
relaxation evidence from the manufacturer’s records
of tests on similarly dimensioned strand of the same
of tests on similarly dimensioned strand of the same
grade.
grade.
6.2.4.3
6.2.4.3 The temperature of the test piece shall be
The temperature of the test piece shall be
maintained at 20 ± 2°C.
maintained at 20 ± 2°C.
6.2.4.4
6.2.4.4 The test piece shall not be subjected to loading
The test piece shall not be subjected to loading
prior to the relaxation test.
prior to the relaxation test.
6.2.4.5
6.2.4.5 The initial load shall be applied uniformly over
The initial load shall be applied uniformly over
a period of not less tha
a period of not less than 3 min and not more than 5
n 3 min and not more than 5 min
min
and the gauge length shall be maintained constant.
and the gauge length shall be maintained constant.
Load relaxati
Load relaxation readings shall comm
on readings shall commence 1
ence 1 min after
min after
application of the total load.
application of the total load.
6.2.4.6
6.2.4.6 Over-stressing of the test piece during the
Over-stressing of the test piece during the
loading operations shall not be permitted.
loading operations shall not be permitted.
6.2.4.7
6.2.4.7 The duration of the test shall be 1 000 h or a
The duration of the test shall be 1 000 h or a
short computed period of 100 h, extrapolated to
short computed period of 100 h, extrapolated to
1 000
1 000 h, which ca
h, which can be shown by rec
n be shown by records to provide
ords to provide
similar relaxation values.
similar relaxation values.
6.2.4.8
6.2.4.8 The test gauge length should be at least 40
The test gauge length should be at least 40
times the nominal strand diameter.
times the nominal strand diameter.
7
7 SAM
SAMPLI
PLING AND
NG AND CRI
CRITER
TERIA FOR
IA FOR
CONFORMITY
CONFORMITY
7.1
7.1 Selection of
Selection of Test Samples
Test Samples
Test samples of sufficient length to permit the tests for
Test samples of sufficient length to permit the tests for
breaking load, 0.2 percent proof load and elongation
breaking load, 0.2 percent proof load and elongation
shall be cut from one end of a coil selected at random
shall be cut from one end of a coil selected at random
from a group of every 5 numbers of coils; but sample
from a group of every 5 numbers of coils; but sample
size shall not be less than 2 from each lot.
size shall not be less than 2 from each lot.
7.1.1
7.1.1 The test sample shall not be detached from the
The test sample shall not be detached from the
coil or length of strand, except in the presence of
coil or length of strand, except in the presence of
purchaser or his authorized representative.
purchaser or his authorized representative.
7.1.2
7.1.2 Before test samples are selected, the
Before test samples are selected, the
manufacturer or supplier shall furnish the purchaser
manufacturer or supplier shall furnish the purchaser
or his authorized representative with copies of the mill
or his authorized representative with copies of the mill
records giving number of coils in each cast with sizes
records giving number of coils in each cast with sizes
as well as the identification marks, whereby each coil
as well as the identification marks, whereby each coil
can be identified.
can be identified.
7.1.3
7.1.3 If required by the purchaser, 100 h relaxation
If required by the purchaser, 100 h relaxation
test shall be carried out on a sample from the lot.
test shall be carried out on a sample from the lot.
7.2
7.2 Criteria
Criteria for
for Conformity
Conformity
7.2.1
7.2.1 Should any sample fail any of the tests, by
Should any sample fail any of the tests, by
agreement between the manufacturer and the purchaser,
agreement between the manufacturer and the purchaser,
two additional test samples from the same end of the
two additional test samples from the same end of the
same coil shall be taken and subjected to the test or
same coil shall be taken and subjected to the test or
tests in which the original sample failed. Should both
tests in which the original sample failed. Should both
additional samples pass the test or tests, the coil from
additional samples pass the test or tests, the coil from
which they were taken shall be deemed to comply with
which they were taken shall be deemed to comply with
the requirements of this standard. Should either of
the requirements of this standard. Should either of them
them
fail, the coil shall be deemed not to comply.
fail, the coil shall be deemed not to comply.
7.3
7.3 Should 10 percent or more of the selected coils
Should 10 percent or more of the selected coils
fail to fulfil the requirement of this standard, the parcel
fail to fulfil the requirement of this standard, the parcel
from which they were taken shall be deemed not to
from which they were taken shall be deemed not to
comply with this standard.
comply with this standard.
8
8 DELIV
DELIVERY, IN
ERY, INSPEC
SPECTION A
TION AND TEST
ND TESTING
ING
FACILITIES
FACILITIES
8.1
8.1 Unless otherwise specified, general requirements
Unless otherwise specified, general requirements
relating to the supply of material, inspection and testing
relating to the supply of material, inspection and testing
shall conform to IS 1387.
shall conform to IS 1387.
8.2
8.2 The purchaser or
The purchaser or his authorized representative shall
his authorized representative shall
be at liberty to inspect and verify the steel maker’s
be at liberty to inspect and verify the steel maker’s
certificate of cast analysis at the premises of the
certificate of cast analysis at the premises of the
manufacturer or supplier; when the purchaser requires
manufacturer or supplier; when the purchaser requires
an actual analysis of finished material, this shall be
an actual analysis of finished material, this shall be
made at a place agreed to between the purchaser and
made at a place agreed to between the purchaser and
the manufacturer or the supplier.
the manufacturer or the supplier.
8.3
8.3 Manufacturer’s Certificate
Manufacturer’s Certificate
In the case of strands which have not been inspected at
In the case of strands which have not been inspected at
the manufacturer’s work the manufacturer or supplier,
the manufacturer’s work the manufacturer or supplier,
as the case may be, shall supply the purchaser or his
as the case may be, shall supply the purchaser or his
authorized representative with the certificate stating
authorized representative with the certificate stating
the process of manufacture and also the test sheet
the process of manufacture and also the test sheet
signed by the manufacturer giving the result of each
signed by the manufacturer giving the result of each
mechanical test, 0.2 percent proof load and the
mechanical test, 0.2 percent proof load and the
chemical composition, if required. Each
chemical composition, if required. Each test sheet shall
test sheet shall

7. 5
5
IS 14268 : 2017
IS 14268 : 2017
indicate the number or identification mark of the cast
indicate the number or identification mark of the cast
to which it applies, corresponding to the number or
to which it applies, corresponding to the number or
identification mark to be found on the material.
identification mark to be found on the material.
9 PACKING
9 PACKING
9.1
9.1 Unless otherwise agreed to between the purchaser
Unless otherwise agreed to between the purchaser
and the supplier the strands shall be supplied as
and the supplier the strands shall be supplied as
indicated in
indicated in 9.1.1
9.1.1 or
or 9.1.2
9.1.2.
.
9.1.1
9.1.1 Strand shall be supplied in reels or in reelless
Strand shall be supplied in reels or in reelless
packs having a minimum core diameter of 600 mm.
packs having a minimum core diameter of 600 mm.
Lengths on reels or reelless packs shall be as per
Lengths on reels or reelless packs shall be as per
agreement between the manufacturer and the purchaser.
agreement between the manufacturer and the purchaser.
9.1.2
9.1.2 The coil shall be securely strapped to prevent
The coil shall be securely strapped to prevent
distortion of the coil in transit and unless otherwise
distortion of the coil in transit and unless otherwise
specified the coil shall be protected aga
specified the coil shall be protected against damage in
inst damage in
transit by wrapping with hessian.
transit by wrapping with hessian.
9.1.3
9.1.3 By mutual agreement between the purchaser and
By mutual agreement between the purchaser and
the manufacturer, water soluble oil may be applied on
the manufacturer, water soluble oil may be applied on
strands.
strands.
A-1
A-1 LENGTH OF
LENGTH OF LAY OF
LAY OF STRAND
STRAND
The sample shall be kept horizont
The sample shall be kept horizontally on the table and
ally on the table and
a plain paper shall be put on the sample. A carbon paper
a plain paper shall be put on the sample. A carbon paper
shall then be placed in a reverse manner on top of the
shall then be placed in a reverse manner on top of the
plain paper and rubbed gently on the sample with a
plain paper and rubbed gently on the sample with a
round object. Impressions of wire will be seen on the
round object. Impressions of wire will be seen on the
paper in the form of slanted lines. A vertical line shall
paper in the form of slanted lines. A vertical line shall
be drawn at the starting end of any one marking/wire
be drawn at the starting end of any one marking/wire
impression and another vertical line shall be drawn at
impression and another vertical line shall be drawn at
the end of consecutive sixth marking/wire impression.
the end of consecutive sixth marking/wire impression.
The distance between two straight lines shall be
The distance between two straight lines shall be
measured. The procedure shall be repeated at three
measured. The procedure shall be repeated at three
different places and three such reading
different places and three such readings shall be taken.
s shall be taken.
The average of these three read
The average of these three readings shall be the length
ings shall be the length
of lay of the strand.
of lay of the strand.
A-2
A-2 NOMINAL
NOMINAL DIAMETER
DIAMETER
For measuring nominal diameter of seven wire strand,
For measuring nominal diameter of seven wire strand,
10 MARKING
10 MARKING
10.1
10.1 Each reel or reel-less pack shall carry a label
Each reel or reel-less pack shall carry a label
giving the following details:
giving the following details:
a)
a) Man
Manufac
ufacture
turer’s
r’s nam
name o
e or tr
r trade-
ade-mark
mark or br
or brand
and
name,
name,
b
b)
) C
Co
oi
il n
l nu
umb
mbe
er
r,
,
c)
c) Nom
Nomina
inal di
l diam
amete
eter o
r of s
f stra
trand,
nd, and
and
d
d)
) C
Cl
la
as
ss
s.
.
10.2
10.2 BIS
BIS Certification Marking
Certification Marking
Each coil containing the strands may also be suitably
Each coil containing the strands may also be suitably
marked with the Standard Mark.
marked with the Standard Mark.
10.2.1
10.2.1 The use of Standard Mark is governed by
The use of Standard Mark is governed by the
the
provisions of
provisions of Bureau
Bureau of
of Indian
Indian Standards
Standards Act
Act, 1986
, 1986
and the Rules and Regulations made thereunder. The
and the Rules and Regulations made thereunder. The
details of conditions under which the licence for the
details of conditions under which the licence for the
use of Standard Mark may be granted to manufacturers
use of Standard Mark may be granted to manufacturers
or producers may be obtained from the Bureau of
or producers may be obtained from the Bureau of
Indian Standards.
Indian Standards.
ANNEX A
ANNEX A
(
(Clauses
Clauses 4.2
4.2 and
and 6.1.1)
6.1.1)
MEASUREMENT OF LENGTH OF LAY, NOMINAL DIAMETER OF STRAND AND DIFFERENCE
MEASUREMENT OF LENGTH OF LAY, NOMINAL DIAMETER OF STRAND AND DIFFERENCE
IN DIAMETER OF CENTRE WIRE AND SURROUNDING WIRE OF STRAND
IN DIAMETER OF CENTRE WIRE AND SURROUNDING WIRE OF STRAND
the micrometer or vernier head shall be kept axially
the micrometer or vernier head shall be kept axially
over the crown of outer wires so as to cover two
over the crown of outer wires so as to cover two
surrounding wires and the centre wire and then the
surrounding wires and the centre wire and then the
reading shall be taken. Three such readings in three
reading shall be taken. Three such readings in three
directions shall be taken. The average of those
directions shall be taken. The average of those
readings shall be the nominal diameter of seven wire
readings shall be the nominal diameter of seven wire
strand.
strand.
A-3
A-3 PERCE
PERCENTAGED
NTAGEDIFFER
IFFERENCEI
ENCEINDIAME
NDIAMETER
TER
OF CENTRE WIRE AND
OF CENTRE WIRE AND SURROUNDIN
SURROUNDING WIRE
G WIRE
The diameter of all the six surrounding wires and
The diameter of all the six surrounding wires and
the centre wire of the strand shall be measured. The
the centre wire of the strand shall be measured. The
difference in diameter of centre wire and
difference in diameter of centre wire and
surrounding/outer wire of the strand shall be
surrounding/outer wire of the strand shall be
calculated as given below:
calculated as given below:
Percentage
Percentage
difference
difference
(
(Diameter of centre wire
Diameter of centre wire –
–
Maximum outer wire diameter)
Maximum outer wire diameter)
=
= ×
× 1
10
00
0
Maximum outer wire diameter
Maximum outer wire diameter

8. 6
6
IS 14268 : 2017
IS 14268 : 2017
B-1
B-1 NOMINAL CRO
NOMINAL CROSS-SECTIONAL AREA
SS-SECTIONAL AREA
The strand sample shall be unraveled to separate
The strand sample shall be unraveled to separate
individual wires. The diameter of individual wires, that
individual wires. The diameter of individual wires, that
is, six surrounding wires and one centre wire of the
is, six surrounding wires and one centre wire of the
strand shall be measured and the cross-sectional area
strand shall be measured and the cross-sectional area
of each wire shall then be computed. The sum of the
of each wire shall then be computed. The sum of the
areas of individual wires is the nominal cross-sectional
areas of individual wires is the nominal cross-sectional
area of the strand.
area of the strand.
ANNEX B
ANNEX B
(
(Table
Table 2)
2)
MEASUREMENT OF NOMINAL CROSS-SECTIONAL AREA AND NOMINAL
MEASUREMENT OF NOMINAL CROSS-SECTIONAL AREA AND NOMINAL
MASS PER UNIT LENGTH OF STRAND
MASS PER UNIT LENGTH OF STRAND
C-1
C-1 The true mechanical properties of the strand are
The true mechanical properties of the strand are
determined by a test in which fracture of the specimen
determined by a test in which fracture of the specimen
occurs in the free span between the jaws of the testing
occurs in the free span between the jaws of the testing
machine. Therefore, it is desirable to establish a test
machine. Therefore, it is desirable to establish a test
procedure with suitable apparatus that consistently
procedure with suitable apparatus that consistently
produces such results. Due to inherent physical
produces such results. Due to inherent physical
characteristics of individual machines, it is not practical
characteristics of individual machines, it is not practical
to recommend a universal gripping procedure that is
to recommend a universal gripping procedure that is
suitable for all testing machines. Therefore, it is
suitable for all testing machines. Therefore, it is
necessary to determine which of the methods of
necessary to determine which of the methods of
gripping described below is most suitable for the testing
gripping described below is most suitable for the testing
equipment available.
equipment available.
C-1.1
C-1.1 Special Grips with
Special Grips withSmooth, Semi-Cylind
Smooth, Semi-Cylindrical
rical
Grooves
Grooves
The radius of curvature of the grooves is approximately
The radius of curvature of the grooves is approximately
the same as the radius of the str
the same as the radius of the strand being tested, and is
and being tested, and is
located 0.8 mm above the flat face of the grip. This
located 0.8 mm above the flat face of the grip. This
prevents the two grips from closing tightly when the
prevents the two grips from closing tightly when the
specimen is in place. The grooves and the gripped
specimen is in place. The grooves and the gripped
portions of the specimen are coated with an abrasive
portions of the specimen are coated with an abrasive
slurry which holds the specimen in the
slurry which holds the specimen in the smooth grooves,
smooth grooves,
preventing slippage. The slurry consists of abrasive,
preventing slippage. The slurry consists of abrasive,
such as Grade 3-F aluminium oxide and a carrier such
such as Grade 3-F aluminium oxide and a carrier such
as water or glycerin.
as water or glycerin.
C-1.2
C-1.2 Standard V-Grips
Standard V-Grips with Serrated
with Serrated Teeth
Teeth
The number of teeth should be approximately 6 to
The number of teeth should be approximately 6 to
B-2
B-2 NOMINAL MASS
NOMINAL MASS PER UNIT LENG
PER UNIT LENGTH OF
TH OF
STRAND
STRAND
A sample of 100 cm length shall be cut and its mass
A sample of 100 cm length shall be cut and its mass
shall be measured, in kg. The length of the core wire
shall be measured, in kg. The length of the core wire
in that sample shall then be measured, in metres. The
in that sample shall then be measured, in metres. The
nominal mass per unit length of a seven wire strand, in
nominal mass per unit length of a seven wire strand, in
kg/m shall be the ratio of the obtained mass of the
kg/m shall be the ratio of the obtained mass of the
sample to the measured length of the centre/core wire.
sample to the measured length of the centre/core wire.
ANNEX C
ANNEX C
(
(Clause
Clause 6.2.1)
6.2.1)
SUGGESTED METHODS OF GRIPPING FOR TENSILE TESTING OF
SUGGESTED METHODS OF GRIPPING FOR TENSILE TESTING OF STRANDS
STRANDS
12
12 per centime
per centimetre and the minimum effe
tre and the minimum effective grippin
ctive gripping
g
length should be approximately 10 cm.
length should be approximately 10 cm.
C-1.3
C-1.3 Standard V-Grip
Standard V-Grips with Serrated Teeth
s with Serrated TeethUsing
Using
Cushioning Material
Cushioning Material
The number of teeth and minimum effective gripping
The number of teeth and minimum effective gripping
length should be as given in
length should be as given in C-1.2
C-1.2. In this method,
. In this method,
some material is placed between the grips and the
some material is placed between the grips and the
specimen to minimize the notching effect of the teeth.
specimen to minimize the notching effect of the teeth.
Materials like lead foil, aluminium foil, carborundum
Materials like lead foil, aluminium foil, carborundum
cloth, emery cloth, etc are being used for this purpose.
cloth, emery cloth, etc are being used for this purpose.
The type and thickness of material required is
The type and thickness of material required is
dependent on the shape, condition, and coarseness of
dependent on the shape, condition, and coarseness of
the teeth.
the teeth.
C-1.4
C-1.4 Standard V-Grip
Standard V-Grips with Serrated Teeth
s with Serrated TeethUsing
Using
Special Preparation of the Gripped Portions of
Special Preparation of the Gripped Portions of the
the
Specimen
Specimen
The number of teeth and minimum effective gripping
The number of teeth and minimum effective gripping
length should be as given in
length should be as given in C-1.2
C-1.2. In this method,
. In this method,
some special preparatio
some special preparation is done in the gripped portions
n is done in the gripped portions
of the specimen so as to minimize the notching and
of the specimen so as to minimize the notching and
cutting effect of the teeth. One of the methods used is
cutting effect of the teeth. One of the methods used is
tinning, in which the gripped portions are cleaned,
tinning, in which the gripped portions are cleaned,
fluxed, and coated by multiple dips in molten tin alloy
fluxed, and coated by multiple dips in molten tin alloy
held just above the melting point. Another method of
held just above the melting point. Another method of
preparation is encasing the gripped portions in metal
preparation is encasing the gripped portions in metal
tubing or flexible conduit, using epoxy resin as the
tubing or flexible conduit, using epoxy resin as the

9. 7
7
IS 14268 : 2017
IS 14268 : 2017
bonding agent. The encased portion should be
bonding agent. The encased portion should be
approximately twice the length of lay of the strand.
approximately twice the length of lay of the strand.
C-1.5
C-1.5 Standard Sockets
Standard Sockets of the Type
of the Type Used for Wire
Used for Wire
Rope
Rope
The gripped portions of the specimen are anchored in
The gripped portions of the specimen are anchored in
the sockets with zinc. The special procedures for
the sockets with zinc. The special procedures for
socketing usually employed in the wire rope industry
socketing usually employed in the wire rope industry
must be followed.
must be followed.
C-1.6
C-1.6 Dead-End
Dead-End Eye
Eye Splices
Splices
These devices are available in sizes designed to fit
These devices are available in sizes designed to fit each
each
size of strand to be tested.
size of strand to be tested.
C-1.7
C-1.7 Chucking
Chucking Devices
Devices
Use of chucking devices of the type generally
Use of chucking devices of the type generally
employed for applying tension to strands in casting
employed for applying tension to strands in casting
beds is not recommended for testing purposes.
beds is not recommended for testing purposes.
NOTE — If the molten-metal temperatures employed during
NOTE — If the molten-metal temperatures employed during
hot-dip tinning or socketing with material are too high, over
hot-dip tinning or socketing with material are too high, over
approximately 370°C, the specimen may
approximately 370°C, the specimen may be heat-affected with
be heat-affected with
a subsequent loss of strength and
a subsequent loss of strength and ductility. Careful temperature
ductility. Careful temperature
controls should be maintained, if such methods of specimen
controls should be maintained, if such methods of specimen
preparation as in
preparation as in C-1.4
C-1.4 and
and C-1.5
C-1.5 are used.
are used.

10. 8
8
IS 14268 : 2017
IS 14268 : 2017
ANNEX D
ANNEX D
(
(Foreword
Foreword)
)
COMMITTEECOMPOSITION
COMMITTEECOMPOSITION
Concrete Reinforcement Sectional Committee, CED 54
Concrete Reinforcement Sectional Committee, CED 54
O
Or
rg
ga
an
ni
iz
za
at
ti
io
on
n R
Re
ep
pr
re
es
se
en
nt
ta
at
ti
iv
ve
e(
(s
s)
)
In Personal Capacity (
In Personal Capacity (No.
No. 17,
17, Nalanda
Nalanda Apartments,
Apartments, D-Block,
D-Block, S
SHRI
HRI G.
G. S
SHARAN
HARAN (
(Chairman
Chairman)
)
Vikaspuri
Vikaspuri,
, New Delhi 110018
New Delhi 110018)
)
B
Bh
hi
il
la
ai
i S
St
te
ee
el
l P
Pl
la
an
nt
t (
(S
SA
AI
IL
L)
),
, B
Bh
hi
il
la
ai
i S
SHRI
HRI U. K. B
U. K. BHALLA
HALLA
S
SHRI
HRI S
SANJAY
ANJAY K
KAMRA
AMRA (
(Alternate
Alternate)
)
C
Ce
en
nt
tr
ra
al
l B
Bu
ui
il
ld
di
in
ng
g R
Re
es
se
ea
ar
rc
ch
h I
In
ns
st
ti
it
tu
ut
te
e (
(C
CS
SI
IR
R)
),
, R
Ro
oo
or
rk
ke
ee
e D
DR
R B.
B. K
KAMESHWAR
AMESHWAR R
RAO
AO
S
SHRI
HRI S. R. K
S. R. KARADE
ARADE (
(Alternate
Alternate)
)
C
Ce
en
nt
tr
ra
al E
l El
le
ec
ct
tr
ro
oc
che
hem
mi
ic
ca
al R
l Re
es
se
ea
ar
rc
ch I
h In
ns
st
ti
it
tu
ut
te
e, (
, (CS
CSI
IR
R)
), K
, Ka
ar
ra
ai
ik
ku
udi
di S
SHRI
HRI K.
K. S
SARAVANAN
ARAVANAN
S
SHRI
HRI A. K. P
A. K. PARANDE
ARANDE (
(Alternate
Alternate)
)
C
Ce
en
nt
tr
ra
al
l P
Pu
ub
bl
li
ic
c W
Wo
or
rk
ks
s D
De
ep
pa
ar
rt
tm
me
en
nt
t,
, N
Ne
ew
w D
De
el
lh
hi
i S
SHRI
HRI A. K. G
A. K. GARG
ARG
S
SHRI
HRI M
MANU
ANU A
AMITABH
MITABH (
(Alternate
Alternate)
)
C
Ce
en
nt
tr
ra
al
l R
Ro
oa
ad
d R
Re
es
se
ea
ar
rc
ch
h I
In
ns
st
ti
it
tu
ut
te
e,
, (
(C
CS
SI
IR
R)
),
, N
Ne
ew
w D
De
el
lh
hi
i D
DIRECTOR
IRECTOR
C
Ce
en
nt
tr
ra
al
l W
Wa
at
te
er
r C
Co
om
mm
mi
is
ss
si
io
on
n,
, N
Ne
ew
w D
De
el
lh
hi
i D
DIRECTOR
IRECTOR (HCD-NW&S)
(HCD-NW&S)
D
DIRECTOR
IRECTOR (HCD-N&W) (
(HCD-N&W) (Alternate
Alternate)
)
C
Co
on
ns
st
tr
ru
uc
ct
ti
io
on
n I
In
nd
du
us
st
tr
ry
y D
De
ev
ve
el
lo
op
pm
me
en
nt
t C
Co
ou
un
nc
ci
il
l,
, N
Ne
ew
w D
De
el
lh
hi
i S
SHRI
HRI P. R. S
P. R. SWARUP
WARUP
S
SHRI
HRI S
SUNIL
UNIL M
MAHAJAN
AHAJAN (
(Alternate
Alternate)
)
D
De
el
lh
hi
i C
Co
ol
ll
le
eg
ge
e o
of
f E
En
ng
gi
in
ne
ee
er
ri
in
ng
g,
, D
De
el
lh
hi
i D
DR
R A. K. G
A. K. GUPTA
UPTA
D
De
el
lh
hi
i D
De
ev
ve
el
lo
op
pm
me
en
nt
t A
Au
ut
th
ho
or
ri
it
ty
y,
, N
Ne
ew
w D
De
el
lh
hi
i S
SHRI
HRI G. R. S
G. R. SHIROMANI
HIROMANI
S
SHRI
HRI L
LACHHMAN
ACHHMAN S
SINGH
INGH (
(Alternate
Alternate)
)
De
Delh
lhi T
i Tou
ouri
rism
sm an
and T
d Tra
rans
nspo
port
rtat
atio
ion D
n Dev
evel
elop
opme
ment
nt Co
Corp
rpor
orat
atio
ion L
n Ltd
td,
, S
SHRI
HRI P
PREADEEP
READEEP G
GARG
ARG
New Delhi
New Delhi
De
Depa
part
rtme
ment
nt of
of Sc
Scie
ienc
nce a
e and
nd Te
Tech
chno
nolo
logy
gy (F
(Fly
ly As
Ash U
h Uni
nit)
t), N
, New
ew De
Delh
lhi
i D
DR
R V
VIMAL
IMAL K
KUMAR
UMAR
D
De
ex
xt
tr
ra
a I
In
nd
di
ia
a P
Pv
vt
t L
Lt
td
d,
, M
Mu
um
mb
ba
ai
i S
SHRI
HRI S
SUNIL
UNIL D
DESAI
ESAI
S
SHRI
HRI J
JITENDRA
ITENDRA H.
H. P
PATHAK
ATHAK (
(Alternate
Alternate)
)
D
Du
ur
rg
ga
ap
pu
ur
r S
St
te
ee
el
l P
Pl
la
an
nt
t (
(S
SA
AI
IL
L)
),
, D
Du
ur
rg
ga
ap
pu
ur
r D
DR
R A
ASIM
SIM K
KUMAR
UMAR R
RAY
AY
S
SHRI
HRI M
MANOJ
ANOJ S
SINGH
INGH (
(Alternate
Alternate)
)
E
En
ng
gi
in
ne
ee
er
rs
s I
In
nd
di
ia
a L
Li
im
mi
it
te
ed
d,
, N
Ne
ew
w D
De
el
lh
hi
i S
SHRI
HRI P. K. M
P. K. MITTAL
ITTAL
S
SHRI
HRI R
RAJANJI
AJANJI S
SRIVASTAVA
RIVASTAVA (
(Alternate
Alternate)
)
G
Ga
am
mm
mo
on
n I
In
nd
di
ia
a L
Li
im
mi
it
te
ed
d,
, M
Mu
um
mb
ba
ai
i S
SHRI
HRI V. N. H
V. N. HEGGADE
EGGADE
S
SHRI
HRI S
SUDEESH
UDEESH R
RAJENDRAN
AJENDRAN (
(Alternate
Alternate)
)
I
In
nd
di
ia
an
n A
As
ss
so
oc
ci
ia
at
ti
io
on
n o
of
f S
St
tr
ru
uc
ct
tu
ur
ra
al
l E
En
ng
gi
in
ne
ee
er
rs
s,
, N
Ne
ew
w D
De
el
lh
hi
i S
SHRI
HRI H
HARI
ARI O
OM
M G
GUPTA
UPTA
S
SHRI
HRI M
MANOJ
ANOJ K.
K. M
MITTAL
ITTAL (
(Alternate
Alternate)
)
I
In
nd
di
ia
an
n I
In
ns
st
ti
it
tu
ut
te
e o
of
f T
Te
ec
ch
hn
no
ol
lo
og
gy
y D
De
el
lh
hi
i,
, N
Ne
ew
w D
De
el
lh
hi
i P
PROF
ROF A. K. N
A. K. NAGPAL
AGPAL
P
PROF
ROF B.
B. B
BHATTACHARJEE
HATTACHARJEE (
(Alternate
Alternate)
)
I
In
nd
di
ia
an
n S
St
ta
ai
in
nl
le
es
ss
s S
St
te
ee
el
l D
De
ev
ve
el
lo
op
pm
me
en
nt
t A
As
ss
so
oc
ci
ia
at
ti
io
on
n,
, N
Ne
ew
w D
De
el
lh
hi
i S
SHRI
HRI R
RAMESH
AMESH R.
R. G
GOPAL
OPAL
I
Ins
nsti
titu
tut
te
e of
of S
Ste
teel
el D
Dev
eve
elo
lop
pme
ment
nt a
and
nd G
Gro
row
wth
th (
(IN
INS
SD
DAG
AG),
), Ko
Kol
lka
kata
ta D
DR
R J
JAYANTA
AYANTA K.
K. S
SAHA
AHA
S
SHRI
HRI A
ARIJIT
RIJIT G
GUHA
UHA (
(Alternate
Alternate)
)
L
La
ar
rs
se
en
n a
an
nd
d T
To
ou
ub
br
ro
o L
Li
im
mi
it
te
ed
d (
(E
EC
CC
C D
Di
iv
vi
is
si
io
on
n)
),
, C
Ch
he
en
nn
na
ai
i S
SHRI
HRI S.
S. K
KANAPPAN
ANAPPAN
S
SHRI
HRI S
STHALADIPTI
THALADIPTI S
SAHA
AHA (
(Alternate
Alternate)
)
M
ME
EC
CO
ON
N L
Li
im
mi
it
te
ed
d,
, R
Ra
an
nc
ch
hi
i S
SHRI
HRI U.
U. C
CHAKRABORTY
HAKRABORTY
S
SHRI
HRI J. K. J
J. K. JHA
HA (
(Alternate
Alternate)
)
M
Mi
il
li
it
ta
ar
ry
y E
En
ng
gi
in
ne
ee
er
r S
Se
er
rv
vi
ic
ce
e,
, E
En
ng
gi
ine
nee
er
r-
-i
in
n-
-C
Chi
hie
ef
f’
’s
s B
Br
ra
an
nc
ch
h,
, A
Ar
rm
my
y B
BRIG
RIG R
RAJESH
AJESH T
TYAGI
YAGI
H
He
ea
ad
dq
qu
ua
ar
rt
te
er
rs
s,
, N
Ne
ew
w D
De
el
lh
hi
i S
SHRI
HRI R
RAVI
AVI S
SINHA
INHA (
(Alternate
Alternate)
)
Mi
Mini
nist
stry
ry of
of Sh
Ship
ippi
ping
ng,
, Ro
Road
ad Tr
Tran
ansp
spor
ort
t an
and
d Hi
High
ghwa
ways
ys,
, Ne
New
w De
Delh
lhi
i S
SHRI
HRI A. K. S
A. K. SHARMA
HARMA
S
SHRI
HRI S. K. M
S. K. MARWAH
ARWAH (
(Alternate
Alternate)
)
M
Mi
in
ni
is
st
tr
ry
y o
of
f S
St
te
ee
el
l,
, N
Ne
ew
w D
De
el
lh
hi
i S
SHRI
HRI A. C. R. D
A. C. R. DAS
AS
S
SHRI
HRI B. D. G
B. D. GHOSH
HOSH (
(Alternate
Alternate)
)
Na
Nati
tion
onal
al Co
Coun
unci
cil
l fo
for
r Ce
Ceme
ment
nt an
and
d Bu
Buil
ildi
ding
ng Ma
Mate
teri
rial
als,
s, Ba
Ball
llab
abga
garh
rh S
SHRI
HRI V.
V. V.
V. A
ARORA
RORA
S
SHRI
HRI S.
S. S
SHARMA
HARMA (
(Alternate
Alternate)
)

11. 9
9
IS 14268 : 2017
IS 14268 : 2017
O
Or
rg
ga
an
ni
iz
za
at
ti
io
on
n R
Re
ep
pr
re
es
se
en
nt
ta
at
ti
iv
ve
e(
(s
s)
)
N
Na
at
ti
io
on
na
al
l H
Hi
ig
gh
hw
wa
ay
ys
s A
Au
ut
th
ho
or
ri
it
ty
y o
of
f I
In
nd
di
ia
a,
, N
Ne
ew
w D
De
el
lh
hi
i S
SHRI
HRI M. P. S
M. P. SHARMA
HARMA
S
SHRI
HRI K.
K. V
VENKATARAMANA
ENKATARAMANA (
(Alternate
Alternate)
)
N
Na
at
ti
io
on
na
al
l M
Me
et
ta
al
ll
lu
ur
rg
gi
ic
ca
al
l L
La
ab
bo
or
ra
at
to
or
ry
y,
, J
Ja
am
ms
sh
he
ed
dp
pu
ur
r S
SHRI
HRI D. D. N. S
D. D. N. SINGH
INGH
N
NT
TP
PC
C L
Lt
td
d,
, N
Ne
ew
w D
De
el
lh
hi
i S
SHRI
HRI A. K. B
A. K. BANSAL
ANSAL
N
Nu
uc
cl
le
ea
ar
r P
Po
ow
we
er
r C
Co
or
rp
po
or
ra
at
ti
io
on
n I
In
nd
di
ia
a L
Li
im
mi
it
te
ed
d,
, M
Mu
um
mb
ba
ai
i S
SHRI
HRI Y. T. P
Y. T. PRAVEENCHANDRA
RAVEENCHANDRA
S
SHRI
HRI R. N. S
R. N. SARANGI
ARANGI (
(Alternate
Alternate)
)
O
Ou
ut
to
ok
ku
um
mp
pu
u I
In
nd
di
ia
a P
Pv
vt
t L
Lt
td
d,
, N
Ne
ew
w D
De
el
lh
hi
i S
SHRI
HRI Y
YATINDER
ATINDER P
PAL
AL S
SINGH
INGH S
SURI
URI
S
SHRI
HRI P
PURUSHOTHAMA
URUSHOTHAMA R
REDDY
EDDY (
(Alternate
Alternate)
)
P
P.
.S
S.
.L
L.
. L
Li
im
mi
it
te
ed
d,
, M
Mu
um
mb
ba
ai
i S
SHRI
HRI R.
R. R
RADHAKRISHNAN
ADHAKRISHNAN
S
SHRI
HRI K
KUNAL
UNAL P
PATEL
ATEL (
(Alternate
Alternate)
)
R
Ra
as
sh
ht
tr
ri
iy
ya
a I
Is
sp
pa
at
t N
Ni
ig
ga
am
m L
Lt
td
d,
, V
Vi
is
sa
ak
kh
ha
ap
pa
at
tn
na
am
m S
SHRI
HRI R
RAVI
AVI S
SUNDAR
UNDAR
S
SHRI
HRI C
CH
H S
SRINIVASA
RINIVASA R
RAO
AO (
(Alternate
Alternate)
)
R
Re
es
se
ea
ar
rc
ch
h,
, D
De
es
si
ig
gn
ns
s a
an
nd
d S
St
ta
an
nd
da
ar
rd
ds
s O
Or
rg
ga
an
ni
iz
za
at
ti
io
on
n (
(M
Mi
in
ni
is
st
tr
ry
y o
of
f S
SHRI
HRI A
ANIL
NIL K
KUMAR
UMAR
R
Ra
ai
il
lw
wa
ay
ys
s)
),
, L
Lu
uc
ck
kn
no
ow
w S
SHRI
HRI A. K. P
A. K. PANDEY
ANDEY (
(Alternate
Alternate)
)
SA
SAIL
IL-R
-Res
esea
earc
rch an
h and De
d Deve
velo
lopm
pmen
ent Ce
t Cent
ntre f
re for I
or Iro
ron an
n and St
d Stee
eel, R
l, Ran
anch
chi
i D
DR
R V
VINOD
INOD K
KUMAR
UMAR
S
SHRI
HRI D.
D. K
KARMAKAR
ARMAKAR (
(Alternate
Alternate)
)
S
Sa
ar
rd
da
ar
r S
Sa
ar
ro
ov
va
ar
r N
Na
ar
rm
ma
ad
da
a N
Ni
ig
ga
am
m L
Li
im
mi
it
te
ed
d,
, G
Ga
an
nd
dh
hi
in
na
ag
ga
ar
r S
SHRI
HRI V
VIVEK
IVEK P.
P. K
KAPADIA
APADIA
D
DR
R M
MUKESHBHAI
UKESHBHAI B.
B. J
JOSHI
OSHI (
(Alternate
Alternate)
)
S
St
te
ee
el
l R
Re
e-
-R
Ro
ol
ll
li
in
ng
g M
Mi
il
ll
ls
s A
As
ss
so
oc
ci
ia
at
ti
io
on
n o
of
f I
In
nd
di
ia
a,
, K
Ko
ol
lk
ka
at
ta
a S
SHRI
HRI B. M. B
B. M. BERIWALA
ERIWALA
C
COL
OL S
SURENDRA
URENDRA S
SINGH
INGH (
(Alternate
Alternate)
)
S
St
tr
ru
uc
ct
tu
ur
ra
al
l E
En
ng
gi
in
ne
ee
er
ri
in
ng
g R
Re
es
se
ea
ar
rc
ch
h C
Ce
en
nt
tr
re
e,
, (
(C
CS
SI
IR
R)
),
, C
Ch
he
en
nn
na
ai
i S
SHRI
HRI T. S. K
T. S. KRISHNAMOORTHY
RISHNAMOORTHY
D
DR
R B. H. B
B. H. BHARATKUMAR
HARATKUMAR (
(Alternate
Alternate)
)
S
ST
TU
UP
P C
Co
on
ns
su
ul
lt
ta
an
nt
ts
s L
Li
im
mi
it
te
ed
d,
, M
Mu
um
mb
ba
ai
i D
DR
R N
NIRMALYA
IRMALYA B
BHATTACHARYAY
HATTACHARYAY
S
SHRI
HRI A
AMIT
MIT K
KUMAR
UMAR C
CHAKRABORTY
HAKRABORTY (
(Alternate
Alternate)
)
S
Su
un
nf
fl
la
ag
g I
Ir
ro
on
n &
& S
St
te
ee
el
l C
Co
om
mp
pa
an
ny
y L
Li
im
mi
it
te
ed
d,
, N
Ne
ew
w D
De
el
lh
hi
i S
SHRI
HRI V
VIPUL
IPUL J
JAIN
AIN
S
SHRI
HRI R
ROHIT
OHIT K
KUMAR
UMAR (
(Alternate
Alternate)
)
T
Ta
at
ta
a S
St
te
ee
el
l L
Li
im
mi
it
te
ed
d,
, J
Ja
am
ms
sh
he
ed
dp
pu
ur
r S
SHRI
HRI I
INDRANIL
NDRANIL C
CHAKRABARTI
HAKRABARTI
D
DR
R S
SANDEEP
ANDEEP B
BHATTACHARYYA
HATTACHARYYA (
(Alternate
Alternate)
)
T
Ta
at
ta
a S
St
te
ee
el
l L
Lt
td
d (
(W
Wi
ir
re
e D
Di
iv
vi
is
si
io
on
n)
),
, M
Mu
um
mb
ba
ai
i S
SHRI
HRI S
SHISHIR
HISHIR V.
V. D
DESAI
ESAI
S
SHRI
HRI R
RAKESH
AKESH M
MALHOTRA
ALHOTRA (
(Alternate
Alternate)
)
T
To
or
rs
st
te
ee
el
l R
Re
es
se
ea
ar
rc
ch
h F
Fo
ou
un
nd
da
at
ti
io
on
n i
in
n I
In
nd
di
ia
a,
, B
Ba
an
ng
ga
al
lo
or
re
e D
DR
R S
SYED
YED S
SHAHID
HAHID
S
SHRI
HRI M. S. S
M. S. SUDARSHAN
UDARSHAN (
(Alternate
Alternate)
)
In personal capacity (
In personal capacity (A-39/B,
A-39/B, DDA
DDA Flats,
Flats, Munirka,
Munirka, S
SHRI
HRI P. B. V
P. B. VIJAY
IJAY
New
New Delhi
Delhi 110067
110067)
)
In personal capacity (
In personal capacity (House
House No
No.
. 2130, Sector 7D,
2130, Sector 7D, S
SHRI
HRI H
HARISH
ARISH J
JULKA
ULKA
Faridabad 121006
Faridabad 121006)
)
B
BI
IS
S D
Di
ir
re
ec
ct
to
or
ra
at
te
e G
Ge
en
ne
er
ra
al
l S
SHRI
HRI S
SANJAY
ANJAY P
PANT
ANT, Scientist ‘E’ and Head (Civil Engg)
, Scientist ‘E’ and Head (Civil Engg)
[Representing Director General (
[Representing Director General (Ex-officio
Ex-officio)]
)]
Member
Member Secretary
Secretary
S
SHRIMATI
HRIMATI M
MADHURIMA
ADHURIMA M
MADHAV
ADHAV
Scientist ‘C’ (Civil Engg), BIS
Scientist ‘C’ (Civil Engg), BIS

12. The major deviations are:
The major deviations are:
a)
a) The requi
The requirement fo
rement for minimum
r minimum diameter
diameter of centra
of central wire
l wire of strand
of strand is lowe
is lower and s
r and strand con
trand construction
struction is
is
different, in view of the prevailing manufacturing practices;
different, in view of the prevailing manufacturing practices;
b)
b) Nominal d
Nominal diameter o
iameter of strand
f strand with appli
with applicable to
cable tolerance h
lerance has been
as been specified
specified and nomin
and nominal mass
al mass has bee
has been
n
given for information only;
given for information only;
c)
c) 0.2 perce
0.2 percent proof l
nt proof load has
oad has been spe
been specified in
cified in line wit
line with similar
h similar requireme
requirement in othe
nt in other steel
r steel reinforcem
reinforcement
ent
standards; and
standards; and
d)
d) Requireme
Requirements su
nts such as
ch as for crac
for crack and
k and curvature
curvature of stran
of strand have
d have not be
not been spe
en specified.
cified.
The composition of the Committee responsible for the formulation of this standard is given in Annex D.
The composition of the Committee responsible for the formulation of this standard is given in Annex D.
For the purpose of deciding whether a particular requirement of this standard is complied with, the final value,
For the purpose of deciding whether a particular requirement of this standard is complied with, the final value,
observed or
observed orcalculated,
calculated,expressing t
expressing the result of a
he result of atest or analy
test or analysis, shall b
sis, shall be rounded off in
e rounded off inaccordance
accordancewith IS
with IS 2
2 :
: 1960
1960
‘Rules for rounding off numerical val
‘Rules for rounding off numerical values (
ues (revised
revised)’
)’.
. The number of significant places retained in the roun
The number of significant places retained in the rounded off
ded off
value should be the same as that of the specified value in this standard.
value should be the same as that of the specified value in this standard.
(
(Continued
Continued from
from second cover
second cover)
)

13. Bureau of Indian Standards
Bureau of Indian Standards
BIS is a statutory institution established under the
BIS is a statutory institution established under the Bureau of Indian Standards Act
Bureau of Indian Standards Act, 1986 to promote
, 1986 to promote
harmonious development of the activities of standardization, marking and quality certification of goods
harmonious development of the activities of standardization, marking and quality certification of goods
and attending to connected matters in the country.
and attending to connected matters in the country.
Copyright
Copyright
BIS has the copyright of all its publications. No part of these publications may be reproduced in any form
BIS has the copyright of all its publications. No part of these publications may be reproduced in any form
without the prior permission in writing of BIS. This does not preclude the free use, in the course of
without the prior permission in writing of BIS. This does not preclude the free use, in the course of
implementing the standard, of necessary details, such as symbols and sizes, type or grade designations.
implementing the standard, of necessary details, such as symbols and sizes, type or grade designations.
Enquiries relating to copyright be addressed to the Director (Publications), BIS.
Enquiries relating to copyright be addressed to the Director (Publications), BIS.
Review of Indian Standards
Review of Indian Standards
Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed
Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed
periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are
periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are
needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards
needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards
should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of
should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue of
‘BIS Catalogu
‘BIS Catalogue’ and ‘Standards
e’ and ‘Standards : Monthly Addition
: Monthly Additions’.
s’.
This Indian Standard has been developed from Doc No.: CED 54 (7822).
This Indian Standard has been developed from Doc No.: CED 54 (7822).
Amendments Issued Since Publication
Amendments Issued Since Publication
A
Am
me
en
nd
d N
No
o.
. D
Da
at
te
e o
of
f I
Is
ss
su
ue
e T
Te
ex
xt
t A
Af
ff
fe
ec
ct
te
ed
d
BUREAU OF INDIAN STANDARDS
BUREAU OF INDIAN STANDARDS
Headquarters:
Headquarters:
Manak Bhavan, 9 Bahadur Shah
Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002
Zafar Marg, New Delhi 110002
Telephones
Telephones : 23
: 2323
23 013
0131, 2
1, 2323
323 337
3375, 2
5, 2323
323 940
9402
2 Website
Website: www.bis.org.in
: www.bis.org.in
Regional Offices:
Regional Offices: Telephones
Telephones
C
Ce
en
nt
tr
ra
al
l :
: M
Ma
an
na
ak
k B
Bh
ha
av
va
an
n,
, 9
9 B
Ba
ah
ha
ad
du
ur
r S
Sh
ha
ah
h Z
Za
af
fa
ar
r M
Ma
ar
rg
g 2
23
32
23
3 7
76
61
17
7
NEW DELHI 110002
NEW DELHI 110002 2323 3841
2323 3841
E
Ea
as
st
te
er
rn
n :
: 1
1/
/1
14
4 C
C.
.I
I.
.T
T.
. S
Sc
ch
he
em
me
e V
VI
II
I M
M,
, V
V.
. I
I.
. P
P.
. R
Ro
oa
ad
d,
, K
Ka
an
nk
ku
ur
rg
ga
ac
ch
hi
i 2
23
33
37
7 8
84
49
99
9,
, 2
23
33
37
7 8
85
56
61
1
K
KO
OL
LK
KA
AT
TA
A 7
70
00
00
05
54
4 2
23
33
37
7 8
86
62
26
6,
, 2
23
33
37
7 9
91
12
20
0
Northern
Northern :
: Plot No. 4-A, Sector 27-B, Madhya Mar
Plot No. 4-A, Sector 27-B, Madhya Marg, CHANDIGARH 160019
g, CHANDIGARH 160019 26
26 50206
50206
265
265 02
0290
90
S
So
ou
ut
th
he
er
rn
n :
: C
C.
.I
I.
.T
T.
. C
Ca
am
mp
pu
us
s,
, I
IV
V C
Cr
ro
os
ss
s R
Ro
oa
ad
d,
, C
CH
HE
EN
NN
NA
AI
I 6
60
00
01
11
13
3 2
22
25
54
4 1
12
21
16
6,
, 2
22
25
54
4 1
14
44
42
2
2254 2519, 2254 2315
2254 2519, 2254 2315
W
We
es
st
te
er
rn
n :
: M
Ma
an
na
ak
ka
al
la
ay
ya
a,
, E
E9
9 M
MI
ID
DC
C,
, M
Ma
ar
ro
ol
l,
, A
An
nd
dh
he
er
ri
i (
(E
Ea
as
st
t)
) 2
28
83
32
2 9
92
29
95
5,
, 2
28
83
32
2 7
78
85
58
8
M
MU
UM
MB
BA
AI
I 4
40
00
00
09
93
3 2
28
83
32
2 7
78
89
91
1,
, 2
28
83
32
2 7
78
89
92
2
Branches:
Branches: AHMEDABAD. BENGALURU. BHOPAL. BHUBANESHWAR. COIMBATORE.
AHMEDABAD. BENGALURU. BHOPAL. BHUBANESHWAR. COIMBATORE.
DEHRADUN. DURGAPUR. FARIDABAD. GHAZIABAD. GUWAHATI.
DEHRADUN. DURGAPUR. FARIDABAD. GHAZIABAD. GUWAHATI.
HYDERABAD. JAIPUR. JAMSHEDPUR. KOCHI. LUCKNOW. NAGP UR.
HYDERABAD. JAIPUR. JAMSHEDPUR. KOCHI. LUCKNOW. NAGP UR.
PARWANOO. PATNA. PUNE. RAIPUR. RAJKOT. VISAKHAPATNAM.
PARWANOO. PATNA. PUNE. RAIPUR. RAJKOT. VISAKHAPATNAM.
{
{
{
{
{
{
{
{
{
{
Published by BIS, New Delhi
Published by BIS, New Delhi