Then, run again the beam design program for your data at midspan. In that way, you will come up with rebars at support and safe rebars at midspan. Of course, the beam section data (say 200mm x 300mm concrete section) should be the same for both. Thanks a lot sir. Excel Spreadsheet Design for Civil and Structural Engineering Calculations I adore creating Excel spreadsheets. Over the course of my academic and professional careers, I have learned a lot both from demanding teachers as well as helpful friends, and my Excel skills have improved immensely.
Desai1960SEFI MemberJoined: 26 Jan 2003Posts: 14Posted: Mon Jul 25, 2011 4:40 pm Post subject: Design of Doubly Reinforced BeamsDear SefiansThere has been a discussion on design of Doubly Reinforced Beams.I would like add thatin the form of an EXCEL file is available on SEFI's web site under SPREAD SHEETS link. The solved examples are also part of the file. These tables can be used for design of Doubly Reinforced Beams.R.K.DesaiPosted via EmailesjayakumarGeneral SponsorJoined: 24 Nov 2011Posts: 1209Location: CochinPosted: Tue Dec 31, 2013 1:14 am Post subject:Dear Sefians,In plinth beams and beams in raft foundations, we normally provide equal reinforcement at top and bottom. Thus it behaves as doubly reinforced beam. How can we quickly work out the moment of resistance of such a doubly reinforced beam of size b x d, reinforced at top and bottom with steel of equal area 'A'?Regards,E S JayakumarB.V.HarsodaBronze SponsorJoined: 19 Jan 2009Posts: 2293Location: RAJKOT,GUJARAT, INDIAPosted: Tue Dec 31, 2013 7:12 am Post subject:Refer previous post at below link:-esjayakumar wrote:Dear Sefians,In plinth beams and beams in raft foundations, we normally provide equal reinforcement at top and bottom. Thus it behaves as doubly reinforced beam.