Scribd
Upload
3K views2 pages

IS Code 1731-1971

This document specifies dimensions, weights, and sectional areas of hot-rolled steel flats for structural and general engineering purposes according to Indian Standard IS: 1731-1971. It covers flats made from steel conforming to various IS specifications. Flats are designated by their width in mm followed by "ISF" and thickness in mm. The document then provides a table with available width and thickness combinations. It notes that weight is calculated based on steel weighing 7.85 kg/cm3 and flats over 160mm wide normally have round edges.

Uploaded by

kaustav
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
3K views2 pages

IS Code 1731-1971

This document specifies dimensions, weights, and sectional areas of hot-rolled steel flats for structural and general engineering purposes according to Indian Standard IS: 1731-1971. It covers flats made from steel conforming to various IS specifications. Flats are designated by their width in mm followed by "ISF" and thickness in mm. The document then provides a table with available width and thickness combinations. It notes that weight is calculated based on steel weighing 7.85 kg/cm3 and flats over 160mm wide normally have round edges.

Uploaded by

kaustav
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOC, PDF, TXT or read online on Scribd
You are on page 1/ 2

Annexure 7 – A.

52
SECTION 7
STEEL WORK
EXTRACTS OF DIMENSIONS FOR STEEL FLATS FOR STRUCTURAL AND GENERAL
ENGINEERING PURPOSES
(First Revision)
IS: 1731 – 1971
1. Scope – Specifies dimensions, weights and sectional areas of hot-rolled steel
flats for structural and general engineering purposes. This standard is mainly intended
to cover flats made from steel conforming to IS: 226 – 1975*, IS: 961 – 1975†, IS:
1977 – 1975‡ and IS: 2062 – 1969*.

2. Designation – Flats designated by width ( in mm ) followed by the letters ISF


and thickness ( in mm).

3. Dimensions ( mm )

Width Thickness
10 3 4 5 6
14 3 4 5 6 8
20 3 4 5 6 8 10 12 16 18
25 3 4 5 6 8 10 12 16 18
30 3 4 5 6 8 10 12 16 18 20
35 3 4 5 6 8 10 12 16 18 20 25 32
40 3 4 5 6 8 10 12 16 18 20 25 32
45 - 4 5 6 8 10 12 16 18 20 25 32
50 3 4 5 6 8 10 12 16 18 20 25 32 40
55 - 4 5 6 8 10 12 16 18 20 25 32 40
60 3 4 5 6 8 10 12 16 18 20 25 32 40 45
65 4 5 6 8 10 12 16 18 20 25 32 40 45
70 4 5 6 8 10 12 16 18 20 25 32 40 45 50
75 4 5 6 8 10 12 16 18 20 25 32 40 45 50
80 4 5 6 8 10 12 16 18 20 25 32 40 45 50
90 5 6 8 10 12 16 18 20 25 32 40 45 50 60
100 5 6 8 10 12 16 18 20 25 32 40 45 50 60
110 5 6 8 10 12 16 18 20 25 32 40 45 50 60
120 5 6 8 10 12 16 18 20 25 32 40 45 50 60
130 6 8 10 12 16 18 20 25 32 40 45 50 60
140 8 10 12 16 18 20 25 32 40 45 50 60
150 8 10 12 16 18 20 25 32 40 45 50 60
160 8 10 12 16 18 20 25 32 40 45
180 8 10 12 16 18 20 25 32 40 45
200 10 12 16 18 20 25 32 40 45
250 10 12 16 18 20 25 32 40 45
300 12 16 18 20 25 32 40 45
400 16 18 20 25 32 40 45

* Specification for Structural Steel (standard quality)(fifth revision)


† Specification for Structural steel (high tensile) (second revision)
‡ Specification for Structural steel (ordinary quality) (second revision)
* Specification for Structural steel (fusion welding quality) (first revision)

1
Note 1 – Weight shall be calculated on the basis that steels weight 7.85 kgs g/cm 3. For
details regarding weight see Table 1 of the standard.
Note 2 - Flats above 160 mm in width will normally be supplied in round edges.
For detailed information, refer to IS:1731-1971 Dimensions for steel flats for structural and
general engineering purposes (first revision)

You might also like