16-09-2016, 03:33 PM
Indian Standard
DIMENSIONS FOR HOT ROLLED STEEL
BEAM, COLUMN, CHANNEL AND
ANGLE SECTIONS
[attachment=71132]
FOREWORD
This Indian Standard (Third Revision) was adopted by the Bureau of Indian Standards
on 6 April 1989, after the draft finalized by the Structural Sections Sectional Committee had been
approved by the Structural and Metals Division Council.
Under the steel economy programme, a rational, efficient and economical series of Indian
Standards on beam sections, channel sections and angle sections was evolved in 1957 and
IS 808 : 1957 was published covering junior, light weight, medium weight, wide flange and heavy
weight beam sections; junior, light weight and medium weight channel sections and equal and
unequal leg angle sections. This standard was revised in 1964.
In the second revision of this standard, parts relating to medium weight beam sections — MB
series, column sections — SC series, channel sections — MC and MCP series and equal and
unequal leg angles were revised and published as Parts 1, 2, 3, 5 and 6 of IS 808, respectively.
Sections not covered in these parts, however, continued in IS 808 : 1964.
In the present revision, the Sectional Committee felt it convenient to merge all the five parts into
one standard. The sections which were retained in IS 808 : 1964 subsequent to its second revision
in five parts are included in this standard with a view that these sections although not being rolled
in the country at present may in future be rolled owing to their efficiency and resultant economy in
the use of steel. However, the designers are advised to check from JPC/producers regarding
availability of such sections.
Following additional modifications have been affected in this revision:
a) Medium weight beam sections MB 100 having the flange width and web thickness of 70 mm
and 4.5 mm, respectively, has been modified to 50 mm flange width and 4.7 mm web
thickness;
b) Two sections, namely, BFB 150 and RSJ 200 which are mainly used in railway electrification
have been included as SC 150 and WB 200, respectively;
c) Additional equal leg angles 60 60 × 4, 100 100 × 7 (in place of 100 100 × 6.5), and 130 130 × 9
have been included in the supplimentary list;
d) Amendments issued so far to the various parts of the standard and to IS 808 : 1964 have been
incorporated; and
e) Mass, area and other sectional properties have been expressed in three significant places.
This edition 4.1 incorporates Amendment No. 1 (July 1992). Side bar indicates modification of the
text as the result of incorporation of the amendment.
1 SCOPE
This standard covers the nominal dimensions,
mass and sectional properties of hot rolled
sloping flange beam and column sections,
sloping and parallel flange channel sections
and equal and unequal leg angle sections.
2 REFERENCES
The Indian Standard IS 1852 : 1985 ‘Rolled and
cutting tolerances for hot rolled steel products
( fourth revision )’ is a necessary adjunct to this
standard.
SECTION 1 GENERAL
3 TERMINOLOGY
3.1 Y-Y Axis
A line parallel to the axis of the web of the
section (in the case of beams and channels) or
parallel to the axis of the longer flange (in the
case of unequal angles) or either flange (in the
case of equal angles) and passing through the
centre of gravity of the profile of the section.
3.2 X-X Axis
A line passing through the centre of gravity of
the profile of the section, and at right angles to
the Y-Y axis.
3.3 U-U and V-V Axes
Lines passing through the centre of gravity of
the profile of the section, representing the
principal axes of angle sections.
4 SYMBOLS
4.1 Letter symbols used in this standard have
been indicated appropriately in Sections 2 to 6.
More explicit definitions for certain symbols,
used in the figures and tables of Sections 2 to 6
are given in 4.1.1 and 4.1.2.
4.1.1 Symbols for Dimensions
4.2.2 Symbols for Sectional Properties
A, B = the longer and the shorter leg length
of angle section, respectively;
DIMENSIONS FOR HOT ROLLED STEEL
BEAM, COLUMN, CHANNEL AND
ANGLE SECTIONS
[attachment=71132]
FOREWORD
This Indian Standard (Third Revision) was adopted by the Bureau of Indian Standards
on 6 April 1989, after the draft finalized by the Structural Sections Sectional Committee had been
approved by the Structural and Metals Division Council.
Under the steel economy programme, a rational, efficient and economical series of Indian
Standards on beam sections, channel sections and angle sections was evolved in 1957 and
IS 808 : 1957 was published covering junior, light weight, medium weight, wide flange and heavy
weight beam sections; junior, light weight and medium weight channel sections and equal and
unequal leg angle sections. This standard was revised in 1964.
In the second revision of this standard, parts relating to medium weight beam sections — MB
series, column sections — SC series, channel sections — MC and MCP series and equal and
unequal leg angles were revised and published as Parts 1, 2, 3, 5 and 6 of IS 808, respectively.
Sections not covered in these parts, however, continued in IS 808 : 1964.
In the present revision, the Sectional Committee felt it convenient to merge all the five parts into
one standard. The sections which were retained in IS 808 : 1964 subsequent to its second revision
in five parts are included in this standard with a view that these sections although not being rolled
in the country at present may in future be rolled owing to their efficiency and resultant economy in
the use of steel. However, the designers are advised to check from JPC/producers regarding
availability of such sections.
Following additional modifications have been affected in this revision:
a) Medium weight beam sections MB 100 having the flange width and web thickness of 70 mm
and 4.5 mm, respectively, has been modified to 50 mm flange width and 4.7 mm web
thickness;
b) Two sections, namely, BFB 150 and RSJ 200 which are mainly used in railway electrification
have been included as SC 150 and WB 200, respectively;
c) Additional equal leg angles 60 60 × 4, 100 100 × 7 (in place of 100 100 × 6.5), and 130 130 × 9
have been included in the supplimentary list;
d) Amendments issued so far to the various parts of the standard and to IS 808 : 1964 have been
incorporated; and
e) Mass, area and other sectional properties have been expressed in three significant places.
This edition 4.1 incorporates Amendment No. 1 (July 1992). Side bar indicates modification of the
text as the result of incorporation of the amendment.
1 SCOPE
This standard covers the nominal dimensions,
mass and sectional properties of hot rolled
sloping flange beam and column sections,
sloping and parallel flange channel sections
and equal and unequal leg angle sections.
2 REFERENCES
The Indian Standard IS 1852 : 1985 ‘Rolled and
cutting tolerances for hot rolled steel products
( fourth revision )’ is a necessary adjunct to this
standard.
SECTION 1 GENERAL
3 TERMINOLOGY
3.1 Y-Y Axis
A line parallel to the axis of the web of the
section (in the case of beams and channels) or
parallel to the axis of the longer flange (in the
case of unequal angles) or either flange (in the
case of equal angles) and passing through the
centre of gravity of the profile of the section.
3.2 X-X Axis
A line passing through the centre of gravity of
the profile of the section, and at right angles to
the Y-Y axis.
3.3 U-U and V-V Axes
Lines passing through the centre of gravity of
the profile of the section, representing the
principal axes of angle sections.
4 SYMBOLS
4.1 Letter symbols used in this standard have
been indicated appropriately in Sections 2 to 6.
More explicit definitions for certain symbols,
used in the figures and tables of Sections 2 to 6
are given in 4.1.1 and 4.1.2.
4.1.1 Symbols for Dimensions
4.2.2 Symbols for Sectional Properties
A, B = the longer and the shorter leg length
of angle section, respectively;