The authors should be commended for their interesting experimental work on sandy soils presented in Belkhatir et al. (2010) [[1]]. They used the inter-granular void ratio,  , to interpret the experimental results and developed some useful correlations with  . However, the Note fails to address the further development of   over a decade to a more generalized form of equivalent granular void ratio,  . This comment aims at adding missing literature on   and presents a re-interpretation of the experimental data based on  . The advantages of using   over   are significant and explained in subsequent sections.