DesignAids.bib

@book{is4562000,
title={Indian Standard Plain and reinforced concrete--code of
        practice (IS 456 : 2000)},
author={{Cement and Concrete Sectional Committee, CED 2}},
journal={New Delhi: },
year={2000},
publisher={Bureau of Indian Standards},
}

@book{aci1981aci,
title={ACI Standard Building Code Requirements for Reinforced
        Concrete (ACI 318-77)},
author={{ACI Committee 318}},
series={ACI standard 318-77},
url={https://books.google.co.in/books?id=amEOfgtA-DYC},
year={1981},
publisher={American Concrete Institute},
}   
@STANDARD{aci31877,
title        = "ACI Standard Building Code Requirements for
    Reinforced Concrete (ACI 318-77)",
organization = "American Concrete Institute",
institution  = "American Concrete Institute",
author       = {{ACI Committee 318}},
language     = "English",
number       = "ACI standard 318-77",
year         = "1981"
}  

@book{IS2000,
title={{IS456:2000}}
} 

@book{IS1964,
title={{IS456:1964}}
}