[...]... k&okh6i bi udn, 100 tdt nhdt, xa gd nbn gat lbn m i t ciia vi k&o,khoing cach gigilia cac mAc k&othutmg la 150 - 200cm Cbu phong : Khi dung tdm lgp loqi nh6 thi tr6n xa gb c6 d@tc l u phong dd chiu lit6 d6 tdm 1@ Ti& dien ciia cbu phong g6 5x5cml 5x6cm d$t the0 chi6u ddc cua mhi va cach nhau td 50 - 60cm c~ 2.2- Kgt cdu doqn d&u h6i : a- Nhri 2 mcii d c : C6 2 kidu cich cdu tqo tuy the0 rnai dua ra kh6i... bio ve d ~ dAu tudng d6ng thhi cdu tao chdng thdm va chdng dot doc theo c dudng tidp giap gigilia mai va tutmg Trddng hgp rnai dua ra kh6i t u h g la phd bi6n nhAm bio ve tdt tudng dhu h8i, dd C ~ tqo chi cAn d@t U xa g6 nh6 ra kh6i t u h g the0 qui cach cdu tao rnai dua, con cac b Q phon khac dugc cdu tqo gidng nhu doqn gigilia nha (H7- 15) b- Nha 4 m i ddc : Trong trudng hgp nhy, k6t cdu doqn d i u . k&o thutmg la 150 - 200cm. c~ Cbu phong : Khi dung tdm lgp loqi nh6 thi tr6n xa gb c6 d@t clu phong dd chiu lit6 d6 tdm 1@. Ti& dien ciia cbu phong g6 5x5cml 5x6cm d$t the0 chi6u. he chju lvc chinh ciia mii (s~dn nbc) la dAm, khung dan, vi kt5o. 1.2- Mai cb kkt ciu khbng gian vdi he chju lqc la dAn vi kt50 khbng gian ; v6 m6ng vbm cung, vbm cdu ; bin 1~gn sbng,. thGy tinh lcldi thbp. 22- Ke"t &u & t6m Iqp : Bao gbm c6c he dhm, din vi kt50 vdi xa g6, cAu phong hooc cac tdm toan khdi hay Ii3p ghkp. Trong cac cbng trinh hien dqi dclgc