Nowadays, Engineers are actively seeking to improve construction materials and properties. In that, the usage of castellated beam is become very popular due its advantageous structural applications. existing researches described presence large openings in web that creates different mechanical behaviour compared strong beams. While it does not deal with shear strength performances beam, which li...

The Journal of the National Science Foundation Sri Lanka publishes results research in all aspects and Technology. journal also has a website at http://www.nsf.gov.lk/. 2021 Impact Factor: 0.682The JNSF provides immediate open access to its content on principle that making freely available public supports greater global exchange knowledge.Cover :Leatherback (a), green (b - adult & f hatchli...