... the0 hinh thang, vdi h>35cm, gd m6ng 5 - 10cm. Ti& kiem v$t lieu 6 phAn ngoii c6a g6c chuy6n lqc a. Vdi mbng bhtbng a -45', h> 100 cm, B>200cm. b3 : (H2-6d) M6ng hAm ... c.0~ dii : ap dung cho truhg hqp dam chiit dgt lun u6t dudi sau, duqc thuc hien bing cach d6ng 10, nhd do tao ra quanh 18 hng nCn chat, ti6p sau li d&t duqc nhoi vio 18 vi ddm chat. ... cua phhg ngang nhau, &a ldy h6t bun non vi phi len mot ldp dem bang cat va bet6ng. (Hinh 2-10a). c2 Vdi cgc bdng be^t&ng c6't thip : Sau khi hoan tdt viec d6ng thi ti6n...