Ka jingkhein ia ka jingbun jong ki tiar na ka bynta ban shna ia ki ryntieh konkrit .
Sngewbha pyni ia ki jingthew ha ki milimeter
D - Ka jingheh jong ka ryntieh konkrit
A - Ka jingkhluit jong ka kynroh
H - Jingjrong
Ia ka prokram la shna ban khein ia ki tiar bad ka jingheh jong ki ryntieh konkrit.
La khein ia ka jingheh jong u konkrit, ka jingheh bad ka jingheh hapoh jong ka ring, ia ka jingheh bad ka jaka jong ka mesh ba pynskhem.
Ia ki ring concrete la pyndonkam na ka bynta ban shna ia ki thliew bad ki thliew um.