Design of RC Box Culverts as per IRC specifications

Dear friends,

                        Iam fresher in the design of bridges, so requesting some of you whoever may be having the design sheets for the design of RC box culverts as per IRC standards or AASHTO standards. Design sheets like excels for staad analysis for 2D analysis and 3D analysis as per IRC specifications or as per AASHTO. iIam very interesting to learn the designs so kindly any one send me the copies to my email ID

Thanks with regards


Asst. Structural Engineer