Torsional shear stresses and warping shear stresses should also be amplified in a similar manner:
This shear stress should be added to the shear stresses due to bending in checking the adequacy of the section.
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APPENDIX E: Location of Neutral Axis
(1) For concrete encased steel sections: Major
Note: is the sum of the
reinforcement area within the region of (2) For concrete filled tubular sections Major axis bending
Note:
• For circular tubular section substitute
For minor axis bending the same equations can be used by interchanging and as well as the subscripts and
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INSDAG'S ACTIVITIES AND PUBLICATIONS
During the past three and half years, INSDAG has undertaken some important projects and already published some valuable documents. Some of the projects are currently on going and the publications will be available in appropriate times.
Following are a brief glimpse on some of the activities of INSDAG: A. Publications Avalable For Sale
1. Directory of Steel Supply Chain
The Institute compiled and printed 'Directory of Steel Supply Chain' for improving interaction among professionals engaged directly or indirectly in the business of steel. It contains contact details of more than 5000 architects, builders, designers, consultants, fabricators, steel producers, re-rollers, importers etc. The directory fulfills long-standing need of professionals in the country.
Publication No INS/PUB/001 Price Rs 685/- 2. Buyer's Manual (including CD ROM)
The professionals in the steel supply chain have also been in need of a source book for obtaining ready reference for their steel product needs. The 'Buyer's Manual' brought out by the Institute is a very useful document, which has a listing of about 220 steel companies/traders/importers etc. The manual contains details of products, grades of steel and marketing procedure including lead time, minimum order quantity etc. The manual is also available in the form of user-friendly CD version.
Publication No INS/PUB/ 002
Price Rs 350/- for hardcopy and CD ROM version separately, and Rs 550/- for a complete set of hardcopy and CD ROM together.
3. Reference Manual for Structural Engineers
Since the existing BIS Structural Engineers Handbook (last revised in 1964) does not contain information about sectional properties of all the presently available sections from the producers and import as required by designers, INSDAG has prepared and published up-to-date "Reference Manual for Structural Engineers". In addition to sectional properties, the Manual also contains brief extract from important codes, details of producers etc.
Publication No INS/PUB/003 Price Rs 450/- 4. Handbook on Composite Construction: Bridges and Flyover
Steel-concrete Composite Construction is widely used in the advanced countries. Their popularity is largely due to the speed with which bridges / flyovers can be constructed in busy metros. In
order to provide guidance to the professionals to use this technology for design of bridges and flyovers, one handbook, based on Indian codes, has been prepared, printed and widely circulated. This handbook is user friendly and contains 4 sample calculations for 16 metre and 24 metre spans along with properties of Composite Sections to help in designing similar problems quickly and accurately.
Publication No INS/PUB/ 004 Price Rs 525/- 5. Corrosion Protection of Structural Steel in Buildings and Bridges
Corrosion has been told to be the major problem for application of steel in construction sector. In order to provide the engineers proper technical write-up about occurrence of corrosion and ways to overcome it as being done in the developed countries, a comprehensive corrosion protection guide publication has been published. Publication No INS/PUB/ 005 Price Rs 85/- 6. Case Studies on Pre-Engineered Buildings and Space Frame
Pre-engineered buildings and space frames are widely employed in the advanced countries in view of their multifarious benefits such as: significant saving in time of designing, construction, erection and cost apart from being aesthetically elegant. With a view to popularize their use in India, nine case studies of such constructions recently executed in the country have been prepared and published.
Publication No INS/PUB/ 016 Price Rs 285/- 7. Life Cycle Cost Study on Bangalore Mass Rapid Transit System
INSDAG has carried out a techno-economic study on life cycle cost assessment of elevated viaducts for the proposed Bangalore Mass Rapid Transit System Limited with the steel intensive construction route. It has been observed that though the initial cost of the concrete intensive option was 10 percent lower than the steel intensive option, the life cycle cost of the steel option is economical to the owner by 49 percent as well as the BOOT partner by 28 percent. Further detailed analysis has also been made. The study was made in April 2000.
Base paper Price Rs 200/-
8. Life Cycle Cost Assessment of a Typical Urban Flyover
Though presently steel intensive construction is not able to compete with concrete construction on the initial cost basis, life cycle cost (LCC) is generally favourable. In the advanced countries, LCC is often used an important tool for decision- making. Keeping this in view, an interesting life cycle cost assessment study has been made fore a typical urban flyover for two city locations. The work has been done in association with two leading consultants: M/s STUP Consultants Ltd and M/s CES (I) Pvt. Ltd.
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