A. Camille Issa , P.E. F.ASCE , B.E. Mazen Merheb , A Case Study of the Compressive Strength of the Typical Rock Formations in Lebanon, Journal of Engineering and Applied Sciences, Volume 2,Issue 3, 2007, Pages 648-653, ISSN 1816-949x, jeasci.2007.648.653, (https://makhillpublications.co/view-article.php?doi=jeasci.2007.648.653) Abstract: The Characteristics of the Lebanese Rock Formations is not well known. In general the types of rocks have been identified but what is lacking is the most important parameter that is the strength of these rock formations. In this study the strength of ten different rock types are investigated. Keywords: Lebanese Rock Formation;strenght;rock types;compressive;anticlines;syncline