Table 12 of the Indian standard code of practice for prestressed concrete design, IS 1343, 1980, was for the design of unbonded post-tensioned concrete with varied l/d ratios and reinforcement indexes. This table has been replaced by Table 14 which includes provisions for both bonded and unbonded post-tensioning. The original version of this document contained errors in its calculation of reinforcement requirements for varying l/d ratios. These have since been corrected in version 3.1. IS 1343 is currently under revision and will be replaced by BS 1363: 2008 when it is published.