1. Ivyagezwe vy'Ubwami
Imiyoboro y’icuma y’ubwami igaragazwa n’umurwa mukuru "DN." Sizes include DN15 (4-inch pipe), DN20 (6-inch pipe), DN25 (1-inch pipe), DN32 (1-inch 2-inch pipe), DN40 (1.5-inch pipe), DN50 (2-inch pipe), DN65 (2.5-inch pipe), DN80 (3-inch pipe), DN100 (4-inch pipe), DN125 (umuyoboro w’inci 5), DN150 (umuyoboro w’inci 6), DN200 (umuyoboro w’inci 8), na DN250 (umuyoboro w’inci 10). Nk’akarorero, umuyoboro w’amazi wa DN25 (25 mm) ungana n’umuyoboro w’amazi w’inusu y’umwami, uzwi kandi nk’umuyoboro w’amasentimetero 8 imbere y’Ingabo z’Umwidegemvyo. Umuyoboro w’amazi DN15 ungana n’umuyoboro w’inusu y’umwami 1/2, uzwi kandi nk’umuyoboro w’inci 4 imbere y’Ingabo z’Umwidegemvyo. Nk'akarorero, umuyoboro w'amazi DN20 ni 3/4" tivale y'Abongereza, uzwi kandi nk'umuyoboro w'inci 6 imbere y'Umurongo w'Ivyiyumviro.
2. Ivyagezwe Mpuzamakungu
Imiyoboro mpuzamakungu y’icuma ishingiye ku gucapura inch mu bice bitobito. Ivyiyumviro birimwo 1/8, 1/4, na 3/8 inches, bingana n’imiyoboro y’inci 1 n’inch 7. Ingano ntoyi zigaragazwa nk’1/16, 1/32, na 1/64, zikiri mu masentimetero. Nimba igikoresho co gukurako n’igiharuro gishobora kugabanywa (nk’akarorero, umucunguzi ni 2, 4, 8, 16, canke 32), bikwiye kugabanywa.
3. Ibara ry'Ibumba ry'Ibumba
Ivyo biharuro vy’uburemere bw’ubwoko butandukanye bw’imiyoboro y’icuma biratandukanye. Hasi, MIAGOO izozana muri make amafomula menshi asanzwe yo kubara uburemere:
Uburemere bw’Ibumbano (kg)=0.00617 x Diameter x Uburebure x Uburebure;
Uburemere bw’Ingabire (kg)=0.00785 x Ububiko x Uburebure x x x;
Uburemere bw'Imirongo (kg)=0.00785 x Uburemere x Uburebure.