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visit : http://www.sourceinfratech.com contact : Rao(09966871942) Code of practice of RCC Design all reinforced concrete structural designs in our country should conform to the recently revised indian standard code IS : 456-2000,Code of practice for plain and reinforced concrete the Bureau of Indian standards have released over the years several hand books to facilitate reinforced concrete structural to design routine structural elements quickly by referring to the various tables and graphs presented in the hand books  a) SP 16-1980 - Design aids for Reinforced concrete to IS : 456 b) SP 24-1983 - Explanatory Hand Book on IS : 456 c) SP 34 -1987 -Hand book on concrete reinforcement and Detailing d) SP 23 -1982 - Hand book on concrete Mixez

visit : http://www.sourceinfratech.com contact : 09966871942(Rao) Methods of design of reinforced concrete the aim of design is to decide the size of the member and maount of reinforcement required,so that the structure will perform satisfactorily during its life period with minimum cost. the following three methods have been developed for the design of reinforced concrete structures. a) working stress method b) ultimate load method c) limit state method    in this limit state method , the structural elements are designed for ultimate load and checked for serviceablility( defelctions, cracking etc) at working loads so that the structure is fit for use through out its life period. the details of this method  

visit : http://www.sourceinfratech.com contact : 09966871942 Design mix concrete  for all important works involving large quantites of concrete,it is preferable to use design mix, which results in considerable economy ensuring the required strength. the process of mix design consists of selecting optimum proportions of cement,aggregate and water to produce the grade of concrete with the required workability,strength and durability with minimum cost. over the years,several mix design methods have been developed.the IS code method is explained below IS CODE METHOD OF MIX DESIGN : this method is covered is IS : 10262 - 1982 .

visit : http://www.sourceinfratech.com contact : srinivas (09966871942) workability of concrete : The workability of reshly mixed concrete is that propert which determines the ease and homogeneity with which it can be mixed,placed,compacted and finished.a workable concrete should not show any segregation or bledding . a workable concret possesses required lubrication for handling concrete with out segregation,can be placed in the forms with out loss of homogeneity,compacted with minimum effort and shall be finished easily. the factors which influence the workability are 1)water-cement ratio 2)type and grading of aggregate. 3)ratio of fine and coarse aggregate. 4)use of admixtures. 5)efficiency of mixing.