Kalkulasyon na karakel na materyales parad panggawa na saray konkreton singsing
Ipangasin ipanengneng so sukat ed milimetro
D - Diametro na singsing na kongkreto
A - Kapal na padir
H - Katagey
Say programa et ginawa pian nakalkula so materyales tan karakel na saray konkreton singsing.
Say karakel na semento, say karakel na loob tan diametro na singsing, say sukat tan kalapar na reinforcing mesh et nakalkula.
Saray konkreton singsing et uusaren ed panagpaalagey na saray bobon tan septic tank.