A building structure includes elements that are integrally connected by a poured bonding structure. The elements include a beam having a cavity that is configured to receive a pourable bonding material and flooring sections that are supported by the beams. The flooring sections include voids that open to a cavity. Inserts are positioned in the voids to control the limit the depth that the pourable bonding material can flow into the voids and to increase the strength of the poured bonding structure.