Ka dib cilmi-baaris adag oo ay sameeyeen kooxda injineernimada ee shirkaddayada, taxanaha SZW ee mataanaha saxda ah ee saxda ah Xawaaraha gelinta caadiga ah ee tan
Tayada alaabta ceeriin ee alaab-qeybiyahan waa mid degan oo la isku halayn karo, had iyo jeer waxay waafaqsan tahay shuruudaha shirkadeena si ay u bixiso alaabta tayada buuxisa shuruudahayada.
Shirkaddani waxa ay si fiican u dabooli kartaa baahidayada tirada alaabta iyo wakhtiga keenista, markaa waxaanu mar walba dooranaa marka aanu haysano shuruudaha wax soo iibsiga.