AIR,.GAP,.-,.correct,.answer,.✔ ✔
The,.vertical,.distance,.between,.the,.opening,.of,.the,.water,.supply,.and,.the,.fl
ood,.level,.rim,.of,.a,.receptacle
branch,.-,.correct,.answer,.✔ ✔
any,.part,.of,.the,.piping,.system,.other,.than,.a,.main,,.riser,.or,.stack
Branch,.vent,.-,.correct,.answer,.✔ ✔
A,.vent,.connecting,.one,.or,.more,.individual,.vents,.with,.a,.vent,.stack,.or,.sta
ck,.vent
Building,.Drain,.-,.correct,.answer,.✔ ✔
The,.lowest,.part,.of,.the,.drainage,.system,.which,.receives,.waste,.from,.soil,.a
nd,.waste,.pipes,.and,.connects,.to,.the,.building,.sewer
Building,.sewer,.-,.correct,.answer,.✔ ✔
Drainage,.piping,.that,.conveys,.waste,.from,.the,.building,.drain,.to,.the,.publi
c,.sewer,.or,.disposal,.system.
clean,.out,.-,.correct,.answer,.✔ ✔
Access,.opening,.in,.the,.drainage,.system,.used,.to,.remove,.obstructions