- Loaïi D: Caûi taïo keânh theo maë

- Loaïi D: Caûi taïo keânh theo maët caét hình thang ñoä doác maùi keânh 1:0,5 hoaëc daïng chöõ nhaät vaø baûo veä baèng töôøng beâ toâng coát theùp. Daïng naøy aùp duïng cho vuøng ñoâ thò hoùa hieän höõu nôi maø vieäc thu hoài ñaát gaäp khoù khaên

結果 (英文) 1:

-Type D: I create a channel as either cut shape mode an maùi channel 1:0.5 or separate letter and protects push plunger beâ coát switched it with steel. Separate to the area municipality that crib to strikeout your nostalgic split fold open problems

結果 (英文) 2:

- Type D: Improvement Creating Cut trapezoidal channel under the cash level for Maui channel slope 1: 0.5 or the updated format and protected words in length equal to wall concrete of steel a coat. This format applied to the current bill Urban area that tangible environment where the recording of land GAAP nostalgic difficulty towel