an anti - ram system and method of construction having a shallow mounted base pad from which extend a plurality of bollards . very little or only a shallow excavation is required for the base of the bollard system , which can be partially or fully assembled prior to bringing it to the installation site . the shallow mounting pad or base of the bollard system of this invention may be formed or constructed in various ways and of various materials , and in various configurations . the shallow mounting pad or base is constructed so as to have considerable mass .