Gutters draining near a foundation can do damage to those foundations over time. All water should flow away and down from the foundation in all locations. Deficient support for gas pipes. Flex gas connectors entering the furnace without a rubber grommet. T2608.2.6 Improperly supported or installed gas lines can be a potential hazard.
Proper installation is critical.
Manufacturers of flex connectors require that their products be installed with a rubber grommet. No one wants critters and insects coming through the openings. That makes perfect sense. But what is not so obvious is that these openings in slabs can also be an entry point for an odorless colorless gas present in some areas of Georgia. Radon gas is a potential hazard that can be easily avoided.