Abstract: The invention disclosed relates to a precast composite header joint system and method for forming and installing the same in a concrete deck structure. According to the invention, the header is cast and cured before being positioned and secured in a recess formed in one of the concrete slabs. A viscous bonding agent is then poured into the void spaces between the header and the concrete slab recess. The bonding agent cures and forms a solid material which fills all of the space between the header and the concrete slab recess. Adjacent headers installed in opposing concrete slab recesses are coupled together by a joint to provide a continuous deck structure.

Abstract: The invention disclosed relates to a precast composite header joint system and method for forming and installing the same in a concrete deck structure. According to the invention, the header is cast and cured before being positioned and secured in a recess formed in one of the concrete slabs. A viscous bonding agent is then poured into the void spaces between the header and the concrete slab recess. The bonding agent cures and forms a solid material which fills all of the space between the header and the concrete slab recess. Adjacent headers installed in opposing concrete slab recesses are coupled together by a joint to provide a continuous deck structure.

Abstract: Embodiments of the present invention are directed to an electronic mail system that is configured to filter transmissions such that the subscriber of the electronic mail account does not receive unsolicited, or undesired transmissions. Embodiments of the electronic mail system allow for the authentication of transmission via comparison of the sender's identification to a listing of authorized identifications in an authentication database or via a subscriber defined authorization code. If the sender's identification is not found within the authentication database, the system reviews the transmission for the presence of the authorization code. If the code is not present the transmission is blocked.