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Minimum Size & Thickness of Steel Section

 
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Md Waqquar Ahmad
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PostPosted: Sun Sep 13, 2009 8:24 am    Post subject: Minimum Size & Thickness of Steel Section Reply with quote

Respected Sir,
As per IS 800:2007 the minimum thickness of steel is not specified, Please let me know what is the minimum thickness and what is the minimum size of steel section (Angle, ISMC, ISNT,ISHT,ISST, ISLT,ISJT,ISMB,ISSC,ISHB) is being practiced in India.
As in the steel table (IS 808) there are some smaller section also which are not being used.

And i Also want to know that is SP 38 new Edition is available in market , which is as per New Code IS 800:2007.

The reason behind this is that i am doing my final year Mtech Structure Project in steel, if SP 38 as per new code is not available in market i will try do it with new Code. If you have any suggestion regarding the same feel free to give it to me it will make me proud.

Thanking you in Anticipation,
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sspawar
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PostPosted: Mon Sep 14, 2009 5:37 am    Post subject: Reply with quote

Dear Mr. Ahmed,
As per latest catlouge(Nov 2008) and my knowledge -SP38-1987 is still active. Further new edition is not issued from BIS.
I am pasting here a list of Codes related to the Stru Sections mainly 801 and 811 is partaing to the light section.

Str Sections.
No.      - Standard Description     Reaffirmed     No. of Amd.
1     IS 808 : 1989 Dimensions for Hot Rolled Steel Beam, Column, Channel and Angle Sections     2004     1
2     IS 811 : 1987 Cold formed light gauge structural steel sections     2004     
3     IS 1173 : 1978 Hot rolled slit steel tee bars     2004     
4     IS 1252 : 1991 Dimensions of hot rolled steel bulb angles     2003     
5     IS 1730 : 1989 Dimensions for steel plates,sheets strips and flats for general engineering purposes     2004     
6     IS 1732 : 1989 Dimensions for round and square steel bars for structural and general engineering purposes     2004     
7     IS 1852 : 1985 Rolling and cutting tolerances for hot rolled steel products     2003     2
8     IS 1863 : 1979 Hot rolled steel bulb flats     2004     
9     IS 1864 : 1979 Hot-rolled steel L-sections for shipbuilding     2004     
10     IS 2314 : 1986 Specification for Steel Sheet Piling Sections     2003     
11     IS 2713 : Parts I to III : 1980 Specification for Tubular Steel Poles for Overhead Power Lines     2003     1
12     IS 3443 : 1980 Crane rail sections     2004     1
13     IS 3908 : 1986 Aluminium equal leg angles     2003     
14     IS 3909 : 1986 Specification for Aluminium Unequal Leg Angles     2003     
15     IS 3921 : 1985 Aluminium channels     2006     
16     IS 3954 : 1991 Hot Rolled Steel Channel Sections for General Engineering Purposes - Dimensions     2006     
17     IS 3964 : 1980 Light rails     2006     
18     IS 5384 : 1985 Aluminium I-beam     2006     
19     IS 5488 : 1987 Dimensions and dimensional tolerances for hot rolled steel plates for ship's hull structure     2004     
20     IS 6445 : 1985 Aluminium tee-sections     2006     
21     IS 6449 : 1987 Aluminium bulb angles for marine application     2004     
22     IS 6475 : 1987 Aluminium tee bars for marine application     2004     
23     IS 6476 : 1987 Aluminium bulb plates for marine application     2004     
24     IS 7452 : 1990 Specificatiion for hot-rolled steel sections for doors, windows and ventilators     2003     
25     IS 10182 : Part I : 1982 Dimensions and Tolerances for Hot Rolled Track Shoe Sections - Part I : Section TS-L1     2006     
26     IS 10182 : Part 2 : 1985 Dimensions and tolerances for hot-rolled track shoe sections     2006     
27     IS 12779 : 1989 Rolling and cutting tolerances for hot rolled parallel flange beam and column sections     2004
     
Struc Engineering
.No.      Standard Description     Reaffirmed     No. of Amd.
1     SP 6 : Part 1 : 1964 Handbook for structural engineers - Structural steel sections     2003     
2     SP 6 : Part 2 : 1962 Handbook For Structural Engineers - 2 : Steel Beams and Plate Girders     2003     
3     SP 6 : Part 3 : 1962 Handbook Structural Engineers - Part 3 : Steel Columns and Struts     2003     
4     SP 6 : Part 4 : 1969 ISI Handbook for Structural Engineers 4. Use of High Strength Friction Grip Bolts     2001     
5     SP 6 : Part 5 : 1980 Handbook for structural engineers - Cold-formed, light gauge steel structures     2001     1
6     SP 6 : Part 6 : 1972 Handbook for structural engineers - Application of plastic theory in design of steel structures     2001     
7     SP 38 (S and T) : 1987 Handbook of Typified Designs for Structures with Steel Roof Trusses (with and without Cranes) (Based on is Codes)           
8     SP 40 (S and T) : 1987 Handbook on Structures with Steel Portal Frames           
9     SP 47 (S and T) : 1988 Handbook on Structures with Steel Lattice Portal Frames (Without Cranes)           
10     IS 800 : 2007 General Construction in Steel - Code of Practice           
11     IS 801 : 1975 Code of practice for use of cold formed light gauge steel structural members in general building construction     2006     112     IS 802 : Part 1 : Sec 1 : 1995 Code of practice for use of structural steel in overhead transmission line towers, Part 1 Materials and Loads and permissible stresses Section 1 Materials and Loads     2006     
13     IS 802 : Part 1 : Sec 2 : 1992 Code of practice for use of structural steel in overhead transmission line towers Part 1 : Material, loads and permissible stress Section 2 Permissible stress     2003     1
14     IS 802 : Part II : 1978 Code of Practice for Use of Structural Steel in Overhead Transmission Line Towers - Part II : Fabrication, Galvanizing, Inspection and Packing     2006     1
15     IS 802 : Part 3 : 1978 Code of practice for use of structural steel in overhead transmission line towers, part 3 Testing     2003     
16     IS 803 : 1976 Code of Practice for Design Fabrication and Erection of Vertical Mild Steel Cylindrical Welded Oil Storage Tanks     2006     1
17     IS 804 : 1967 Rectangular pressed steel tanks     2003     2
18     IS 805 : 1968 Code of Practice for Use of Steel in Gravity Water Tanks     2006     
19     IS 806 : 1968 Code of practice for use of steel tubes in general building construction     2002     1
20     IS 2750 : 1964 Specification for Steel Scaffoldings     2006     3
21     IS 4000 : 1992 Code of practice for high strength bolts in steel structures     2003     
22     IS 4014 : Part 1 : 1967 Code of practice for steel tubular scaffolding Part 1 Definitions and materials     2006     
23     IS 6533 : Part 1 : 1989 Code of practice for design and construction of steel chimneys Part 1 Mechanical aspects )     2006     1
24     IS 6533 : Part 2 : 1989 Code of practice for design and construction of steel chimneys Part 2 Structural aspects     2003     1
25     IS 7205 : 1974 Safety Code for Erection of Structural Steelwork     2006     
26     IS 7215 : 1974 Tolerances for fabrication of steel structures     2006     1
27     IS 8081 : 1976 Specification for slotted sections     2006     1
28     IS 8147 : 1976 Code of Practice for Use of Aluminium Alloys in Structures     2006     
29     IS 8640 : 1977 Recommendations for dimensional parameters for industrial building     2006     
30     IS 9178 : Part 1 : 1979 Criteria for design of steel bins for storage of bulk materials Part 1 General requirements and assessment of loads     2006     2
31     IS 9178 : Part 2 : 1979 Criteria for design of steel bins for storage of bulk material Part 2 Design storage criteria     2006     
32     IS 9178 : Part 3 : 1980 Criteria for design of steel bins for storage of bulk materials Part 3 Bins designed for mass flow and funnel flow     2006     1
33     IS 9964 : Part 1 : 1981 Recommendations for maintenance and operation of petroleum storage tanks Part 1 Preparation of tanks for safe entry and work     2006     
34     IS 9964 : Part II : 1981 Recommendations for Maintenance and Operation of Petroleum Storage Tanks - Part II : Inspection     2006     
35     IS 10987 : 1992 Code of practice for design, fabrication, testing and installation of underground/above ground horizontal cyclindrical storage tanks for petroleum products     2003     
36     IS 12778 : 2004 Hot Rolled Parallel Flange Steel Sections for Beams, Columns and Bearing Piles - Dimensions and Section Properties           
37     IS 12843 : 1989 Tolerances for erection of steel structures     2006     
38     IS 15663 : Part 1 : 2006 Design and Installation of Natural Gas Pipelines - Code of Practice - Part 1 : Laying of Pipelines           
39     IS 15663 : Part 2 : 2006 Design and Installation of Natural Gas Pipelines - Code of Practice - Part 2 : Laying of Pipelines in Crossings           
40     IS 15663 : Part 3 : 2006 Design and Installation of Natural Gas Pipelines - Code of Practice - Part 3 : Pre-Commissioning and Commissioning of Pipelines           
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arulsteel
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PostPosted: Mon Sep 14, 2009 8:44 am    Post subject: Minimum Size & Thickness of Steel Section Reply with quote

Dear Mr.Waqquar Bhai
Happy to know your interest in IS:800(2007). Yes the minimum thickness restrictions have been removed in the new code - however a chapter has been added on durablity. The minimum thickness must be decided based on the exposure condition of the steel structures and also based on the aggressive nature of the environment. The normal rule is that if steel is put in an enclosure away from diurnal wetting and drying, there is no need for mimimum thickness requirements.
You have a happy news that SP:38 is not available and please go ahead and produce one of your own using the new IS:800(2007). Please share it with us so that we can even have a document which may be published by BIS after a peer review process. Waqquar Bhai! good effort go ahead! Inshah Alla make it in your PG dissertation. Tata Structura is developing a document something similar to SP:38 but dedicated to tubular sections. This work is being pursued at IIT Madras. Tata Structura may make that publication free. In case of doubts please be in touch or send a mail to Prof.Satish at kim@iitm.ac.in (kim@iitm.ac.in) regarding the work on tubular trusses.
regards
arul(serc)


From: Md Waqquar Ahmad <forum@sefindia.org>
To: general@sefindia.org
Sent: Sunday, 13 September, 2009 1:54:55 PM
Subject: [SEFI] Minimum Size & Thickness of Steel Section

Respected Sir,
As per IS 800:2007 the minimum thickness of steel is not specified, Please let me know what is the minimum thickness and what is the minimum size of steel section (Angle, ISMC, ISNT,ISHT,ISST, ISLT,ISJT,ISMB,ISSC,ISHB) is being practiced in India.
As in the steel table (IS 808) there are some smaller section also which are not being used.

And i Also want to know that is SP 38 new Edition is available in market , which is as per New Code IS 800:2007.

The reason behind this is that i am doing my final year Mtech Structure Project in steel, if SP 38 as per new code is not available in market i will try do it with new Code. If you have any suggestion regarding the same feel free to give it to me it will make me proud.

Thanking you in Anticipation,









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Md Waqquar Ahmad
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Joined: 04 Aug 2009
Posts: 15

PostPosted: Mon Sep 14, 2009 3:24 pm    Post subject: Re: Minimum Size & Thickness of Steel Section Reply with quote

Thank you Sir for giving me valuable  information as well as appreciating my effort.
after completing i will share it to you all for the review.
Thanks Again .
arulsteel wrote:
Dear Mr.Waqquar Bhai
Happy to know your interest in IS:800(2007). Yes the minimum thickness restrictions have been removed in the new code - however a chapter has been added on durablity. The minimum thickness must be decided based on the exposure condition of the steel structures and also based on the aggressive nature of the environment. The normal rule is that if steel is put in an enclosure away from diurnal wetting and drying, there is no need for mimimum thickness requirements.
You have a happy news that SP:38 is not available and please go ahead and produce one of your own using the new IS:800(2007). Please share it with us so that we can even have a document which may be published by BIS after a peer review process. Waqquar Bhai! good effort go ahead! Inshah Alla make it in your PG dissertation. Tata Structura is developing a document something similar to SP:38 but dedicated to tubular sections. This work is being pursued at IIT Madras. Tata Structura may make that publication free. In case of doubts please be in touch or send a mail to Prof.Satish at kim@iitm.ac.in (kim@iitm.ac.in) regarding the work on tubular trusses.
regards
arul(serc)


From: Md Waqquar Ahmad <forum>
To: general@sefindia.org
Sent: Sunday, 13 September, 2009 1:54:55 PM
Subject: [SEFI] Minimum Size & Thickness of Steel Section

Respected Sir,
As per IS 800:2007 the minimum thickness of steel is not specified, Please let me know what is the minimum thickness and what is the minimum size of steel section (Angle, ISMC, ISNT,ISHT,ISST, ISLT,ISJT,ISMB,ISSC,ISHB) is being practiced in India.
As in the steel table (IS 808) there are some smaller section also which are not being used.

And i Also want to know that is SP 38 new Edition is available in market , which is as per New Code IS 800:2007.

The reason behind this is that i am doing my final year Mtech Structure Project in steel, if SP 38 as per new code is not available in market i will try do it with new Code. If you have any suggestion regarding the same feel free to give it to me it will make me proud.

Thanking you in Anticipation,









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Dr. N. Subramanian
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PostPosted: Tue Sep 15, 2009 2:30 pm    Post subject: Minimum Size & Thickness of Steel Section Reply with quote

Dear Er. Ahmed and Er Pawar,

BIS is Govt. organization and it took more than 20 years to bring out new editions of IS 800:2007(earlier version 1984), and also IS 456:2000(earlier version 1978). How can you expect them to update all other codes, so quickly. There are many other codes and Handbooks, which are related to IS 800, such as IS 802, IS 806, SP 38, SP 1-5, SP 40, etc., We can only pray God for them to be revised. As far as I know, the work on revising these codes and Hand books have not been started. I believe revision work on IS 801 has started. My friend Dr Arul of SERC can through some light on it.

BIS will sell the old versions(Even ACI sells ACI 318-05, even now), as it will get revenue. These codes and Handbooks have also become very expensive!

Best wishes
Subramanian
Quote:

Dear Mr. Ahmed,
As per latest catlouge(Nov 2008) and my knowledge -SP38-1987 is still active. Further new edition is not issued from BIS.
I am pasting here a list of Codes related to the Stru Sections mainly 801 and 811 is partaing to the light section......



     


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Dr. N. Subramanian
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PostPosted: Wed Sep 16, 2009 3:21 am    Post subject: Re: Minimum Size & Thickness of Steel Section Reply with quote

Dear Er Waqquar Ahmad,

This is a good question. Many novice engineers specify steel sections based on their design, which are often not available in practice. It is better if you write to Sail and Tata Steel to get the steel sections rolled by them. My book Appendix A(available in CD) contains the available sections*I, channel, equal and unequal angles, and Tees) in the market. It also includes properties of Wide flange sections, Castellated beams, Circular tubes and hollow sections and cold rolled lipped channel and Zed sections.

Though the minimum thickness of steel provision is removed to allow the use of cold formed sections, proper painting/coating has to be used. They are found in the Durability section of the code.

Best wishes for your project,
Subramanian

Md Waqquar Ahmad wrote:
Respected Sir,
As per IS 800:2007 the minimum thickness of steel is not specified, Please let me know what is the minimum thickness and what is the minimum size of steel section (Angle, ISMC, ISNT,ISHT,ISST, ISLT,ISJT,ISMB,ISSC,ISHB) is being practiced in India.
As in the steel table (IS 808) there are some smaller section also which are not being used.

And i Also want to know that is SP 38 new Edition is available in market , which is as per New Code IS 800:2007.

The reason behind this is that i am doing my final year Mtech Structure Project in steel, if SP 38 as per new code is not available in market i will try do it with new Code. If you have any suggestion regarding the same feel free to give it to me it will make me proud.

Thanking you in Anticipation,
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SUCHA SINGH
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Joined: 14 Jul 2009
Posts: 18

PostPosted: Wed Sep 16, 2009 3:49 am    Post subject: Reply with quote

Dear SAFIANS,
For the latest on revisions and other updating programmes of BIS one may visit BIS website www.bis.org.in.
THanks and regards
SUCHA SINGH
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hiren_patel
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PostPosted: Tue Jan 18, 2022 10:36 am    Post subject: PEB Structure Reply with quote

Hello Sefians, I wanted to know that is there any minimum thickness requirement that we have to satisfy to design a PEB structural sections apart from limiting width-to-thickness ratio given in table 3 of IS800. As in practice, economy plays major role in reducing and deciding thickness of members instead of codal provisions. So, is there any guidance or restriction or good practice to follow to get the confusion solved??
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vikram.jeet
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PostPosted: Wed Jan 19, 2022 4:45 am    Post subject: Reply with quote

I think , SP 38 is not revised and is based on WSM and still active as enlightened by Er Pawar & Dr NS sir .

Minimum thickness of members is very important for durability of steel members , and prescribed maintenance standards ( periodic painting schedule) are generally not adhered causing rusting / deterioration

Exposure conditions  of steel members must be kept in view . In Certain situations where maintenance & inspection is not very easy , eg steel pressure shafts in HYDROPOWER structures , Corrosion allowance is additional thickness to be added to design thickness..
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vikram.jeet
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PostPosted: Wed Jan 19, 2022 8:34 am    Post subject: Re: PEB Structure Reply with quote

Codal provisions need to be adhered and cannot be hindsighted for economy considerations .

Yes a design engineer always wish to create economical design but DESIGN IS NATIONAL , though analysis is Universal. It has to be done respecting the Country Codal requirements.

In case National Code is silent on certain provision , specialist literature or foreign Codes can always be referred for better and logical design. All tender documents generally incorporate such situations where National Code provisions are silent on certain aspect .





hiren_patel wrote:
Hello Sefians, I wanted to know that is there any minimum thickness requirement that we have to satisfy to design a PEB structural sections apart from limiting width-to-thickness ratio given in table 3 of IS800. As in practice, economy plays major role in reducing and deciding thickness of members instead of codal provisions. So, is there any guidance or restriction or good practice to follow to get the confusion solved??
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