In the template of WEp1 ,what the definition between the words" water closet" and "blow-out fixture" according to the table WEp1-3 (flush fixture data)?
(Plz no literally meanings on these words.) Since I've searched the toilet types,there are two main kinds: "Siphon"&"Wash Down",I'm still not so sure if the "water closet" equals to "Siphon" and "Blow-out fixture" refers to "Wash down"?