इंटरनेट
मानक
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Whereas the Parliament of India has set out to provide a practical regime of right to
information for citizens to secure access to information under the control of public authorities,
in order to promote transparency and accountability in the working of every public authority,
and whereas the attached publication of the Bureau of Indian Standards is of particular interest
to the public, particularly disadvantaged communities and those engaged in the pursuit of
education and knowledge, the attached public safety standard is made available to promote the
timely dissemination of this information in an accurate manner to the public.
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“The Right to Information, The Right to Live”
“Step Out From the Old to the New”
Mazdoor Kisan Shakti Sangathan
Jawaharlal Nehru
IS 1173 (1978): Hot rolled and slit steel tee bars [CED 7:
Structural Engineering and structural sections]
“!ान $ एक न' भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
“Invent a New India Using Knowledge”
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है”
ह
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”
IS I 1173 - 1978
( Reaffirmed
1988) )
( Reaffirmed 2004
Indian Standard
SPECIFICATION FOR
HOT ROLLED AND SLIT STEEL TEE BARS
( Second Revision )
Seco~ld Reprint DECEMBER
UiC
669.14-423.4-122.4
0 Wyight
BUREAU
MANAK
Gr 2
1995’
OF
BHAVAN,
INDIAN
1978
STANDARDS
9 BAHADUR
SHAH
NEW DELHI 110002
ZAFAR
MAR0
,October 1978
j
I
IS r 1173 - 1978
( Reaffirmed 1998 )
Indian Standard
SPECIFICATION FOR
HOT ROLLED AND SLIT STEEL TEE BARS
( Second Revision )
Structural
Sections
Sectional
Committee,
Chainnan
SMDC
6
Representing
SHRI M. DHAR
Kamani
Engineering
Corporation
Ltd,.Bombay
Members
Steel Re-Rolling
Mills
Association
of
Calcutta
Garden Reach Workshops Ltd, Calcutta
Hindustan Steel Ltd, Bhilai
SHRI S . BANERJEE
India,
SHRI N. BRATTACRARYA
SHRI N. S. CHATTR~E
SHRI V. MUKUN~AN ( Alternate )
Superintendence Co of India ( Pvt ) Ltd, Calcutta
SRRI B. B. CHAKRAVERTI
SRRI A. K. SHONE ( Altmate )
Central Design
Organization,
Central
Public
CHIEF ENGINEER
Works Deoartment.
I
’ New Delhi
EXECVTIVE ENQINEER ( AIternafe )
M. N. Dastur & Co Private Ltd, Calcutta
SHRI D. S. DESAI
Tata Iron and Steel Co Ltd, Jamshedpur
SRRI D. GADR
SARI G. R. NA~AR ( Altnnatc )
Hindustan Steel Ltd, Durgapur
SHXI M. GANQVLY
SHRI J. PAVLRAJ ( Alternate )
Inspection Wing, Directorate General of Supplies
SRRI A. K. GVHA
and Disposals, New Delhi
SRRI P. C. MVSTAFI ( Alternate )
Organization,
Development
Research
and
SERI M. P. JASVJA
Hindustan Steel Ltd, Ranchi
JOINT
DIRECTOR
STANDARDS Ministry of Railways
( WAQON ), RDSO
JOINT DIRECTOR STANDARDS
( B & S ), RDSO ( Alternate )
EMC Projects Pvt Ltd, Calcutta
SHRI OM KROSLA
SHRI S. N. SINCH (Alfernate )
Hindustan Shipyard Ltd, Visakhapatnam
SHRI P. LAXMINAHAYANA
SHRI V. S. NARAYANAI~AO ( Alternate )
( Continued on page
@ Copyight
BUREAU
OF
INDIAN
2)
1978
STANDARDS
This publication
is protected
under the Indian Copyriglrl Act ( XIV of 1957) and
reproduction in whole or in part by any means except with written permission of the
publisher shall be deemed to be an infringement of copyright under the said Act.
IS : 1173- 1978
( Continuedfrom
page 1 )
Refiresenting
Members
SIIRI P. R. MERH
SHRI S. K. MITRA (Alternate)
SHRI
P. K. MUKI~E~ JEE
SHRI D. B. NAIK
Indian Iron and Steel Co I.td, Burnpur
The Braithwaite and Co Ltd, Calcutta
Engineer-in-Chief’s
Branch, Army Headquarters,
New Delhi
SHRI D. D. RAMA RAO ( Alternate )
Richardson and Cruddas Ltd. Bombav
SHRI P. V. NAIK
Hindustan Steel Ltd, Rourkela
’
SHRI V. y. PATHAK
Iron & Steel Control, Calcutta
SHRI P. S. RANQAVITTALAN
Jessop and Co Ltd, Calcutta
SHRI S. K. SADIZIJ
SRRI S. C. CI~AKRABARTI ( Alternnte)
Tube Investment of India Ltd, Madras
SHRI N. S. SAMBASIVAM
SHRI A. S. SHETTY ( Alternate )
Stup ( India) Ltd, Bombay
SHRI M. C. SARAN~~HAR
SHRI M. K. CHATTERJEE ( Alternate )
Institution of Engineers ( India ), Calcutta
SRRI P. K. SOM
Joint Plant Committee, Calcutta
SHRI D. SRINIVA~AN
SHRI B. P. GHOSH I Alternate 1
National Buildings Organization,
New Delhi
’
SIIRI K. S. SRINIVASAN‘
SHRI H. K. JAQWANI ( Alternate )
Indian Aluminium Co Ltd, Calcutta
SHRI K. SURYANARAYANAN
SIIRI R. K. MEHTA ( Alternate )
Director General, L%i ( Ex-ojicicioMember )
SHRI C. R. RAMA RAO,
Director ( Strut & Met )
Secretary
SHRI M. S. NAQARAJ
Deputy Director ( Strut & Met ),,BIS
2
IS:1173-1978
Indian Standard
SPECIFICATION FOR
HOT ROLLED AND SLIT STEEL TEE BARS
( Second Revision)
0.
FOREWORD
0.1This Indian Standard ( Second Revision ) was adopted by the Indian
Standards Institution on 10 April 1978, after the draft finalized by the
Structural Sections Sectional Committee had been approved by the Structural and Metals Division Council.
0.2 This standard was first published in 1957 covering a’ wrde range of
hot rolled and slit tee’bars and was revised in 1967, which covered slit
tee bars to be produced by slitting some of the Indian Standard light
weight, medium weight and H-beam sections conforming to IS : 8081964*.
0.2.1 In this revision Indian Standard provisional slit medium weight
tee bars have been deleted since the Indian Standard provisional medium
weight beam sections have been regularized as Indian Standard medium
weight sections. with slight modifications in their dimensions and have
now been covered in IS : 808 ( Part I )-19737.
The dimensions of Indian
Standard slit medi,um weight tee bars have been modified to bring them
in line with IS : 808 ( Part I )-1973t.
The geometrical properties have
been expressed in SI units.
0.3 In the preparation of this standard, the Sectional Committee has kept
in view the manufacturing and trade practices followed in the country in
this field.
0.4 For the purpose ‘of deciding whether a particular requirement of this
standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with
IS : 2-1960$.
The number of significant places retained in the rounded
off value should be the same as that of the specified value in this standard.
*Specification
for rolled steel beam, channel and angle sections (revised).
tDimensions
for hot rolled steel beams: Part 1 MB series ( second revision ).
SRules for rounding off numerical
values ( revised ).
3
IS t 1173 - 1978
1. SCOPE
1.1 This standard lays down the nominal dimensions,
sectional properties of hot rolled and slit steel tee bars.
weight
and
basic
2. DEFINITIONS
2.0 For the purpose
of this standard,
the following
definitions
shall apply.
2.1 Y-Y Axis - A line passing through the centre of gravity
of the section, parallel to the axis of the web of the section.
of the profile
2.2 X-X Ads - A line passing through the centre
of the section and at right angles to the T-T axis.
of the profile
of gravity
3. SYMBOLS
3.1 Letter symbols used in this standard have been indicated in Fig. 1,
Fig. 2 and Table 1. Other letter symbols used in the standard have the
meaning indicated against each as given below:
=
Sectional area in sq cm
W
=
Calculated
C,
= Distance
of centre
of gravity
I,: = Moment
I yy = Moment
of inertia
of inertia
about the X-X axis
about the T-T axis
exx = Distance
=
Distance
eYY
of extreme
fibre from the X-X axis
of extreme
fibre from T-T axis
x*-s=
Modulus
a
I
<rr=*;
weight
= Modulus
in kg/m
= ( 0.785 a )
of section
section
from top of flange
about
about
the X-X axis
the T-T axis
-_IXX = Radius of gyration about the X-X axis
a
4
-.
I
_-KY_ = Radius of gyration about the T-T axis
ryy =
a
J
D = The angle between. the web and flange of the section, in
degrees.
rxx =
4. CLASSIFICATION
4.1 Indian Standard Hot-rolled Steel Tee Bars may be classified as
follows:
a) Indian Standard Rolled Normal Tee Bars ( ISNT ),
b) Indian Standard Rolled Deep Legged Tee Bars ( ISDT ) ,
4
L_
.
.
_ .-_
_
. __
I_^”^._._,... ._I____,_._
..--.
-.-
__,_______Il_“__._...-.,_-_
IS : il73 - 19?8
c) Indian
Standard
Slit Light
d) Indian
e) Indian
Standard
Standard
Slit Medium Weight Tee Bars ( ISMT
Slit Tee Bars from H-Sections
( ISHT).
Weight
Tee Bars ( ISLT
),
Y
FIG.
1
ROLLED NORMAL TEE BAR ( ISNT )
i
FIG. 2
SLIT TM:. BAR ANT) DEEP
5
LEGGEDTEE BAR
), and
fS : 1173 - 1978
4.2 For
shop
marking
and drawing
office purposes,
the
following
abbreviated
reference
symbols
may also be permitted
provided specific
understahding
exists between the fabricator,
the producer and the drawing
office that members
designated
by these symbols refer only to Indian
Standard Sections:
ClassiJication
NT
ISDT
DT
ISLT
LT
ISMT
.MT
ISHT
HT
tolerances
and cutting
Symbols
A&D PROPERTIES
5.1 Nominai dimensions
as given in Table 1.
*Rolling
Reference
ISNT
5. DIMENSIONS
5.2 The
1973*.
Abbreviated
and weight
on the
tolrrancrs
of Indian
dimensions
for hot-roll4
6
shall
Standard
Tee Bars shall be
be as specified
steel prodwts
in IS : 1852
( ~rrond revision ).
IS : 1173- 1978
TABLE 1
NOMINAL
DIMENSIONS,
WEIGHT
AND GEOMETRICAL
PROPERTIES
OF INDIAN STANDARD
TEE BARS
( Clauses 3.1 and 5.1 )
WEIGHT
SECTIOSAL
(1)
(2)
kg/m
SIZE
( NowNAL )
(w)
(3)
mm2
THICKNESS OF
WEB
(hxb)
( tw 1
(4)
mmxmm
(5)
mm
THICKNESSOF
FLAXGE
(tf)
(6)
mm
RADIUS
RADIUS
RAOTOT
(Q )
T%
(rt)
-
(7)
mm
(8)
mm
MOMENTS
OF
INERTIA
CENTRE
OF
SiOPE
OF
FLANGE
CD")
GRAVITY
r---'-----,
POSITION
(Cxx)
(9)
IXS
RADII OF
GYRATIOX
,____A-_-7
IYY
IXX
(13)
mm
(10)
(11)
(12)
mm
106mm’
106mm4
0.005
0.018
0.061
0.123
0.214
0.620
1.64
‘5.4t
0.002
0.008
0.029
0.057
0.097
0.292
0.768
2.50
0,990
4.50
MOUULIOF
SECTIOX
r-----
GY
TYY
(14)
mm
(15)
103mm3
(16)
103mm3
Indian Standard Normal Tee Bars
ISNT
ISNT
IS1L’T
ISNT
ISNT
ISNT
ISNT
ISNT
20
30
40
50
60
75
100
150
1.1
;:i
4.4
5.4
10.0
14.9
22.7
145
226
445
566
685
1270
1900
2 890
20x20
30x30
40x40
50x50
60x60
75x75
100x 100
150x 150
4.0
4.0
6.0
::;
.
9.0
10.0
10.0
4.0
4.0
6.0
6.0
6.0
9.u
10.0
10.0
4.0
5.0
6.5
8.0
9.0
10.0
3.0
3.5
4.0
4.0
4.5
5.5
6.0
7.0
;:!j
( &Fig.
1)
11.4
13.5
15.6
20.4
26.2
36.1
0.3
0.8
tY.8”
14.7
17.7
22.1
29.4
43.3
4.1
5.9
8.1
10.1
11.9
15.2
20.1
29.4
4.8
11.4
22.2
47.5
0.2
0.5
1.5
2.3
3.2
7.8
15.4
33.4
0 096
0.370
30.9
47.5
9.6
13%
14.2
43.9
3.8
9.9
3.58
5.32
59.2
76.2
31.5
33.4
83.3.
43.4
59.1
0.108
0.218
0,412
0.756
1.16
0,177
0.192
0.234
0.384
0.750
12.1
16.5
20.8
24.7
26.8
15.5
15.1
15.7
17.6
21.5
2.7
4.4
7.1
11.3
14.7
5.05
5’50
6.25
9.00
15.0
0.962
I.94
4.15
5.74
2.30
4.97
10.0
11.0
22.2
z’i?i
34.5
39.2
34.4
44.2
53.7
54.1
16.4
24.0
41.0
46.5
30.1
49.3
79.9
87.7
5.8
3’::
Indian Standard Deep Legged Tee bars
ISDT
ISDT
100
150
8.1
15.7
1040
2 000
100x50
150 x 75
ISLT
ISLT
200
250
28.4
37.5
3G20
4 780
200 x 165
250 x 180
8.0
9.2
12.5
14.1
ISMT
ISMT
ISMT
ISMT
ISMT
59
62.5
75
87.5
100
5.8
6.7
7.5
9.8
12.7
735
850
955
1 240
1620
50x70
62.5 x 70
75x 75
87.5 x 85
100 x 100
4.5
5.0
5.0
7.5
8.0
8.0
9.0
10.8
1950
2 550
3 480
3 740
75x 150
100 x 200
125 x 250
150x250
8.4
7-8
8.8
7.6
10.0
8-O
4.0
11.6
9.0
4.5
30.3
$1
47.5
Indian Standard Slit Light Weight Tee Bars*
16.0
17.0
8.0
8.5
;;:
Indian Standard Slit Medium Weight
5”:;
9.0
9.0
9.0
10.0
11.0
Indian Standard
ISHT
ISHT
ISHT
ISHT
75
100
125
150
15.3
20.0
27.4
29.4
9.0
9.0
9.7
10.6
8.0
9.0
10.0
11.0
45
4.5
4.5
5.0
5.5
98”
$1
98”
98”
47.8
64.0
12.i
27.7
149.2
Tee Barst
10.4
13.9
17.3
20.6
21.3
Slit Tee Bars from H-Section:
4.0
4.5
5.0
5.5
94”
94”
;::
*Slit from ISLB 200 and ISLB 500.
TSIit from MB 100, 125, 150, 175 and 200
SSlit from ISHB t50, 200, 250 and 300.
7
16.2
19.1
23.7
26.6
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