!"#$%"&#' ()#* #+,&# (&#-./"+* (0
#1+23 #
#45
NI DUNG CHNH
6
6
78
78
9
9
:
:
;
;
9
9
6
6
<=
<=
9
9
()*+,-'./0/1,
( # 2 3 )* 45
6-'./076
678
678
9
9
.
!(%#%2
89:;<=:)>
.
?:)>@6AB,
.
C2#8(D
EF@G<H:)>I
.
!)'/J#4,
/#B&'7,
.
C24D)#B&'#
K.B&'84
678
678
9
9
.
?)#)+,.F
.
!B&'&'B)##<&3./0
LGMLI
?,@A5!B*< >?
>,6CDEFE!D8 >G
H,I"5*%&J";K H9
G,@A!5!&L; HG
M,!!N>
<7"#;<=
G9
O,!PQ GG
R,!PS*+ M9
678
678
9
9
.
\D&,%,,#],,1^
-0/J6V4.#%
.
Môi trưng ting n c mc âm không than phin:
(
!LTT*)D;5$%&D
F %U S V>G23 ! L *<D HG23 ! L
;D*W!XGG23,
(
I"2%VHG23!L*<DGG23!L;D*W
!XO923,
(
I"%U-"LFM923D*W!XOG23,
(
I"T"LFMG23D*W!XR9:,
678
9
I"S1^4
&
_M(
8R
_8R(
??
_??(
M
8,I"S6*`LT;<=LTTD
%TD*Z"2%aDb%&cD
&DZ
G9 HG H9
?,I"2%D7-DWDUd"
)
M9 GG G9
>,I"2%E'e!"S%U
-D2]D7NE"X
OG O9 G9
678
678
9
9
`JK'#4a4,/Db/)G#
2.).IG)>I
:;9
:;9
.
!#b
.
f'K! g823
f'?EHh gH23
f'8E?h R923
:;9
:;9
(
!9)S7[
(
!6[
:;9
:;9
\!X;\6*;D*`LT
67L;d"#,
@%UNQ;L;
i j *# 5D LT TD
%&c5E"d"7L;,
#X";K7L;*kE2%,
.
Ting n t- thi công xây d0ng:
l
P,78,.8+,&#/J9
[
:;9
.
Ting n trong nh":
(
O)K[
)*%7";Z
!JjN-!r6"s
ZE#BU7U6
,
)_L<!";Z!
$;" N";Zd"k#5%&%
P7tDP*DkuAd"%&F
X),
:;9
:;9
:;9
:;9
_!
:;9
:;9
_E;2S
:;9
:;9
+* (0 1@AB@
:;9
:;9