Abin da za a guje wa lokacin tubali mai banƙyama yi

(1) Ragewa: wato rashin daidaito tsakanin yadudduka da tubalan;

(2) karkata: wato ba a kwance a kwance ba;

(3) Ƙwaƙwalwar toka mara daidaituwa: wato faɗin toka ɗin ya bambanta, wanda za a iya daidaita shi ta hanyar zabar tubalin da ya dace;

(4) Hawan hawa: wato, akwai kurakurai na yau da kullun a saman bangon madauwari, wanda yakamata a sarrafa shi a cikin 1mm;

(5) Rabuwa: wato, zoben bulo mai jujjuyawar ba ya ta’allaka da harsashi a cikin ma’auni mai siffar baka;

(6) Sake dinkewa: wato a kan kabu na sama da na kasa, sannan a bar ash guda daya kawai a tsakanin layuka biyu;

(7) Ta hanyar dinki: wato ana hada kabu masu launin toka na ciki da na waje a kwance, har ma da harsashi na karfe ya fito, wanda ba a yarda da shi ba;

(8) Bakin budawa: wato guraben turmi a cikin masonry mai lankwasa suna da girma da girma;

(9) Rushewa: wato turmi ba ya cika tsakanin yadudduka, tsakanin bulo da tsakanin harsashi, kuma ba a yarda da shi a cikin rufin kayan da ba a iya motsi;

(10) Gadon gashi: wato, gaɓoɓin tubalin ba a ɗaure su da gogewa, kuma bango ba ya da tsabta;

(11) Snaking: wato kabu mai tsayi, madauwari ko kabu a kwance ba madaidaici ba ne, sai dai surutu;

(12) Masonry bulge: Yana faruwa ne ta hanyar nakasar kayan aiki, kuma yanayin da ya dace na kayan aiki ya kamata a yi laushi a lokacin ginin. Lokacin gina rufin rufin biyu, za a iya amfani da rufin rufi don daidaitawa;

(13) Rarraba haɗaɗɗen slurry: ba a yarda da yin amfani da slurry ba daidai ba.