International audienceThis paper discussed to provide operating modes in colonial urbanism.. Dependent on current issues, this approach reveals some continuities between two plans: throught a large corpus of documents .The topics and the arrangements contained in the PAEE (1932) have also been in the alignment plan which is seven decades before him. Once reviewed, these topics and these arrangements can open the way for other questions about posterity and longevity of the colonization schemes..(Dans cet article, il est question d’éclairer des modes opératoires en urbanisme colonial. Tributaires des enjeux du moment, ces modes opératoires dévoilent certaines continuités entre deux plans parmi la large gamme des documents. Les thèmes et les ...