to check the above LC’s for these two factors separetaly. My query is in above all combinations psf for prestess is 1.0, whereas in IRC:112-2011, cl.7.9.5 po.no:6 ,in serviceability limit state, psf of 1.1 & 0.9 shall be used for prestress, in such case, is it reqd. Serviceability Limit state:Quasi-permanent combination (1.0DL+1.0SIDL+1.0WC+1.0PRESTR+0.5TL) Serviceability Limit state:Frequent combination (1.0DL+1.0SIDL+1.0WC+1.0PRESTR+0.2LL+0.6TL) Serviceability Limit state:Frequent combination (1.0DL+1.0SIDL+1.0WC+1.0PRESTR+0.75LL+0.5TL) Serviceability Limit state:Rare combination (1.0DL+1.0SIDL+1.0WC+1.0PRESTR+0.75LL+1.0TL) Serviceability Limit state:Rare combination (1.0DL+1.0SIDL+1.0WC+1.0PRESTR+1.0LL+0.6TL) The following Load combinations as given in Table 3.3 of IRC:6-2010 have been checked. In design of PSC box girder as per IRC:112-2011, Posted: Sat 7:45 am Post subject: PSC box design as per IRC:112-2011 Use online scanners here and here to upload downloaded attachment to check for safety. Warning: Make sure you scan the downloaded attachment with updated antivirus tools before opening them.
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