Munjira yakale yolimbitsira mlatho, yolimbitsa konkire ndi mlatho wokhazikika wa konkriti wokhazikika pogwiritsa ntchito m'mphepete mwa m'mphepete mwa girder kuti akhazikitse ndodo zomangira zomangirapo kapena matabwa okhazikika, malo olimba omwe amagwiritsidwa ntchito pa mlatho wa Sonic Logging Tube...