Phn 8

THUYT MINH BIN PHP THI CNG

GI THU S 04: THO D THIT B KIN TRC XY DNG V CI TO NH NG BAO 1 V NG BAO 2

D N: DY TRUYN MI NH MY XI MNG BM SN

THUYT MINH

BIN PHP THI CNG

GI THU S 04: PH D THIT B KIN TRC XY DNG V CI TO NH NG BAO 1 V NG BAO 2

D NDY TRUYN MI NH MY XI MNG BM SN

CH U TT VN GIM ST (IBST)

NH THU

MC LCTrang

3PHN I: GII THIU CHUNG

31.1. C s lp bin php thi cng cng trnh

31.2. Gii thiu Nh thu

7PHN II: C IM CNG TRNH V THC T KHU VC THI CNG

72.2. Nhng thun li, kh khn

82.3. iu kin tin quyt

82.4. Gii php thi cng

9PHN III: BIN PHP T CHC V K THUT THI CNG

93.1. Cng tc chun b

203.2. Bin php thi cng chi tit

21PHN IV: BIN PHP THI CNG PH D

214.1. Mc tiu chnh

214.2. Nguyn tc chung

304.3. Cng tc chng n, chng bi v an ton

314.4. Trnh t thi cng

334.5. Chn thit b phc v thi cng

38PHN V: TIN THI CNG

385.1. Tin thi cng

385.2. Bin php m bo tin thi cng

40PHN VI: BIN PHP M BO AN NINH, AN TON LAO NG V SINH MI TRNG V PHNG CHNG HA HON

406.1. Bin php m bo an ninh

416.2. Bin php m bo an ton lao ng:

526.3. Bin php m bo v sinh mi trng

576.4. Bin php phng chng chy n

60PHN VII: QUY TRNH THI CNG M BO CHT LNG

62PHN VIII: KT LUN

PHN I GII THIU CHUNG

1.1. C s lp bin php thi cng cng trnh

- Cn c vo Lut xy dng c Quc hi nc cng ho x hi ch ngha Vit nam ph chun ngy 26 thng 11 nm 2003

- Cn c vo Ngh nh s 16/2005/N - CP ngy 07/02/2005 v vic ban hnh quy ch qun l u t xy dng.

- Ngh nh 209/2004/N - CP ngy 16/12/2004 ca Th tng Chnh ph v qun l cht lng cng trnh.

- Cn c vo Hp ng kinh t s 55/XMBS-QLDA-KHTH ngy 13 thng 07 nm 2007 gia Cng ty C phn xi mng Bm Sn vi Lin danh: Cng ty C phn xy dng v pht trin h tng Thng Long v Cng ty C phn Lilama 5 V/v: Thi cng xy lp gi thu s 04 D n Dy truyn mi nh my xi mng Bm Sn;- Cn c vo cc iu kin thc t ca cng trnh do nh thu kho st thu c

- Mt bng thi cng cng trnh v cc cng trnh kin trc ln cn ti thi im hin ti.

- Cn c vo nng lc v con ngi, my mc thit b ca Nh thu.

1.2. Gii thiu Nh thu

1.2.1.Tn chnh thc: Cng ty c phn xy dng v pht trin h tng Thng Long- Tn giao dch quc t: THNG LONG INFRASTRUCTURE DEVELOPMENT AND CONSTRUCTION CORPORATION.

- S 69, ngch 32/76, An Dng, Yn ph, Ty H, H Ni

- in thoi: (84-04) 2947606; Fax:(84-04) 7326020

- Ti khon s: 052696030-0 , ti Ngn hng thng mi c phn qun i 14C L Nam , thnh ph H Ni

- M s thu: 01 01 13 58 53

1.2.2. Nm v ni thnh lp:

Nm thnh lp: 2001

Ni thnh lp: Thnh ph H Ni

1.2.3. Cc ngnh ngh kinh doanh chnh:

Lnh vc hot ng hin nay:

- Xy dng dn dng, cng nghip, giao thng, thu li;- Xy dng c s h tng;- Ph d cng trnh v san lp mt bng;- Sn xut khai thc v bc xc t , ph gia xi mng;- Sn xut bun bn ho cht (tr ho cht nh nc cm);

- Khai thc v ch bin than m;- Bun bn t liu sn xut, t liu tiu dng;- i l mua, i l bn, k gi hng ho;- Vn ti hng ho;- Thm d, kho st a cht cng trnh phc v cho thi cng cc d n v cng trnh xy dng;

- Trang tr ni tht, ngoi tht, sn vn, cy cnh cc d n, cng trnh xy dng v cnh quan mi trng, th (khng bao gm dch v thit k cng trnh).

- Kinh doanh, thi cng, lp t cc loi bin qung co;

- T vn u t trong v ngoi nc (khng bao gm dch v t vn php lut);- Kinh doanh, pht trin nh, cc khu th, khu cng nghip, v cc khu vui chi gii tr;

- Xy dng cng trnh in n 35 KV;

- Mua bn, tho d, lp t, bo tr, bo dng cc h thng my mc, thit b, nh xng cng nghip;

- Khai thc, ch bin, mua bn hng lm sn (Tr nhm G Nh nc cm).

- Mua bn, lp t, bo dng, bo hnh hng in t, in lnh, cu thang my, my iu ho cc loi;

- Dch v sa cha, bo dng, lp rp xe t cc loi;

- Xut nhp khu cc mt hng Cng ty kinh doanh.1.2.4. Mt s d n tham gia thc hin:

- Tho d cc hng mc cng trnh kin trc trong khun vin Hi trng Ba nh. Bn giao thu: Ban qun l d n u t xy dng nh quc hi v hi trng Ba nh (mi).- Tho d b phn cng trnh xy dng sai php ti s 125 ng 72 ph Quan Nhn.Bn giao thu: U ban nhn dn phng Nhn Chnh.- Tho d phn kin trc cng trnh 40, kho du, ng st vo kho gch v kho x, phn xng sa cha thit b d n dn chuyn mi nh my xi mng Bm Sn.

Bn giao thu: Cng ty C phn xi mng Bm Sn.1.2.5. Ti chnh:

Vng iu l: 50.000.000.000 ng (Nm mi t ng).1.2.6. Lao ng:

Cng ty c trn 100 lao ng chuyn nghip lnh ngh trong c 15 cn b ch cht l nhng cn b tr c trnh chuyn mn t trung cp n i hc.

1.2.7. Thit b my mc:

Cng ty c nng lc my mc thc hin thi cng cng trnh c quy m ln c bit l trong lnh vc ph d.

Cng ty c phn xy dng v pht trin h tng Thng Long lun lun hn hnh c lm quen vi cc i tc.

1.2.8. Kinh nghim trong cng vic ph d cng trnh:Tnh cht cng vicS nm kinh nghim

1. Ph d cng trnh xy dng dn dng

2. Ph d nh xng, cng trnh ngm

3. Ph d cc cng trnh khc888

1.2.9. My mc thit b s dng cho cng trnh:

Thit b my mc ca cng ty Thng Long t c:

- My nn kh 360m3/h: 05 chic

- Ba cn : 25 chic

- My xc KOMATSU PC200: 06 chic

- My xc Kobelco cn di 18m cng vi cc ph kin km theo ( gu, ba thu lc, km bp ): 02 chic

- Ba ph b tng thy lc: 04 chic

- Xe t Hyundai ti trng 15 tn: 4 chic

- Xe t Samsung ti trng 15 tn: 3 chic

- Xe cu Kato loi 25 tn: 3 chic

- Xe ti Hyundai ti trng 10 tn: 6 chic

- My ct hn hi: 10 b

- Khoan ph b tng chy in: 5 (chic).

- My bm nc chng bi: 5 (ci).

- My i D75: 3 (chic).PHN II C IM CNG TRNH V THC T KHU VC THI CNG

2.1. Cc cng vic chnh ca gi thuLp thit k bn v thi cng v thi cng cc phn vic.

1. o, v kim tra hin trng nh ng bao 1 v ng bao 2 Nh my xi mng Bm Sn.2. Tnh ton khi lng thi cng ph d v vn chuyn ph thi hon tr li mt bng.

3. Lp d ton, bin php thi cng.

2.2. Nhng thun li, kh khn

Nhng thun li:

- C nhiu kinh nghim trong vic ph d gii phng mt bng v thi cng xy dng c s h tng.

- Cng ty c y cc thit b thi cng xy lp cng i ng cn b k thut v cng nhn lnh ngh nhiu nm kinh nghim ng thi c i tc tin cy thu thit b chuyn ngnh ph d v tho d cng ngh mi nh: ba ph b tng thy lc "Nht Bn", km bp b tng thy lc "Nht Bn" cng vi cn cu c sc nng ln.

- Mt bng cng trng tng i rng, thun li cho vic c gii ha trn cng trng gp phn y nhanh tin thi cng v cht lng cng trnh;

- Cng trnh gn ng giao thng nn vic chuyn ch tp kt vt t, thit b v cng trng v vn chuyn ph thi tng i thun li;

- Ngun in, nc phc v thi cng c sn trn mt bng cng trnh.

Cc kh khn:

- Cc hng mc cn ph d nm trong khu vc nh my ang hot ng. Kt cu cn ph d c kch thc, cng chu lc ln, ng thi c mt s kt cu cn tho v ph d ti ct thi cng cao.

2.3. iu kin tin quyt

- Lp bn v thit k thi cng ng cc tiu chun hin hnh.

- Vn an ninh trt t, v sinh mi trng, hn ch ti a ting n trong v ngoi cng trng phi c c bit lu v tm cc gii php p ng ti u cc vn trn.

- Cc cng tc thi cng thc hin ch yu bng cc loi thit b chuyn ngnh, nn khi thi cng thit b xe my b chim nhiu din tch, do vic b tr Tng mt bng thi cng v vic iu ng xe my phi khoa hc, ph hp iu kin ti tng v tr thi cng.

- Khng lm nh hng ti hot ng, sinh hot ca khu dn c khi thc hin cng tc tho d.

- Trong qu trnh thi cng tuyt i khng gy chn ng mnh lm ln nt, hoc nh hng ti cc cng trnh kin trc li, cc cng trnh nh dn lin k.

- Cc thit b thi cng a vo s dng ti cng trng phi hin i, t tiu chun v kh thi, n.

- Ph thi sau khi ph d phi c vn chuyn ti ng ni quy nh.

- Thi cng ng bin php c cp c thm quyn ph duyt.

- Thi cng ng bin php, tin ra.

2.4. Gii php thi cng

- Cng tc lp thit k bn v thi cng tho d, ph d do nh thu thc hin,.

- My phc v thi cng c y thi cng ng thi khi cn gp y nhanh tin c th iu chnh thm cc cng trnh khc sang.

PHN III BIN PHP T CHC V K THUT THI CNG

Nh thu thi cng theo ng h s thit k c cp c thm quyn ca Ch u t ph duyt. Cc quy nh, tiu chun hin hnh mi nht c p dng cho tng cng tc thi cng v c tun th cht ch.

3.1. Cng tc chun b

3.1.1. Ngoi cng trng trc khi thi cng.

- Thng bo bng vn bn cho UBND, Cng an s ti v ni dung v tin thi cng cng trnh.

- Do cng tc thi cng din ra 24/24h nn nh thu b tr nh ngh cho lc lng cn b, cng nhn thi cng ti khu vc ngoi cng trng. Chng ti s lin h vi cc c quan hoc nh dn khu vc lin k thu li c s vt cht c sn, y l ni lm vic v ngh ngi ca cc b phn thi cng cng trnh.

- ng k tm tr cho cn b, lc lng bo v v cng nhn thng xuyn c mt trn cng trng v khu vc nh .

- Lm vic vi b phn chc nng qun l v giao thng cng cng trn a bn, thng nht tuyn ng cc thit b, phng tin vn chuyn i li phc v thi cng cng trnh.

- Lin h mua giy php hot ng trn a bn theo quy nh cho cc phng tin vn chuyn.

- Lin h vi c quan bo him mua bo him cho cn b, cng nhn, thit b thi cng v bo him trch nhim ngi th ba cho cc cng trnh ln cn theo ng quy nh hin hnh;

3.1.2. Cung cp ti liu v ph duyt ca bn A:

Nh thu lp thit k k thut thi cng cng trnh ch u t ph duyt trc khi thi cng. * Bin php thi cng: Trc khi thi cng nh thu s trnh v xin kin ca ch u t v t vn gim st thng nht phng n v ra bin php thi cng ti u nht m bo cng trnh c thi cng nhanh nht, an ton nht.

* Tin chung.

- Nh thu s bt u cng vic trn cng trng ngay khi thc hin xong cc th tc xin php theo quy nh hin hnh v nhn c lnh khi cng cng trnh ca bn A.

- Tin ngy: Trc gi lm vic v cui gi lm vic ca ca sn xut, k s bn B s bo co cc cng vic vi k s bn A cng gii quyt nu c vng mc xy ra.

* Gim st, nghim thu.

- Lp nht k thi cng: Ghi li nhng vic thc hin trong ngy, ghi ni dung cc cuc hp, kin cc b phn chc nng.vv

- Gim st: Hng ngy Nh thu s c ngi c thm quyn, nng lc cng vi cn b ch u t, cn b gim st thi cng i kim tra cc phn vic ang thc hin hc cc cng vic ngoi tin lng mi thu thi cng theo yu cu t xut ca ch u t. i vi cc ngy ngh, ngy l yu cu cng vic cn c k s gim st ca ch u t v t vn gim st, nh thu s thng bo vi ch u t trc 01 ngy cc bn b tr phi hp.

- Nghim thu cng vic: trc khi hon thnh tng phn cng vic hoc tng hng mc, nh thu s trnh duyt ti liu cn thit ch u t v t vn gim st nghim thu ti hin trng. Thi cng phn vic tip theo khi phn vic trc c nghim thu. Cc ln nghim thu u c lp thnh vn bn c xc nhn ca cc bn lm cn c cho tng nghim thu sau ny.

- Tng nghim thu, bn giao: Trong vng 1 ngy k t ngy n v thi cng hon thnh vic thi cng cng trnh, nh thu s bn giao mt bng cho ch u t.- Nh thu s ng k cng trnh vi cht lng cao, ng quy trnh k thut to iu kin cho s gim st, kim tra ca ch u t c thun li trong sut qu trnh thi cng trnh.

3.1.3. Chun b nhn lc, thit b thi cng:

Thi cng tho d phn ln l phi tin hnh ngoi tri, do cc iu kin v thi tit, kh hu c nh hng rt ln n tin thi cng, nc ta ma bo thng ko di gy nn cn tr ln v tc hi nhiu n vic xy dng. V vy, cng tc chun b nhn lc v thit b thi cng phi d tr thm k hoch i ph vi thi tit, kh hu, m bo cho cng tc thi cng vn c tin hnh bnh thng, lin tc ng thi b li nhng thi gian khng th thi cng c do cc iu kin bt kh khng.

Nhn lc:

a. Ch nhim cng trnh:

Ch nhim cng trnh l k s nhiu kinh nghim trong cng tc xy dng v qun l, c thm quyn quyt nh mi cng vic lin quan m bo thi cng t tin , cht lng, k-m thut, an ton lao ng theo yu cu ca bn v thit k c duyt v ph hp vi cc qui nh ca Nh nc. Ban Ch huy cng trnh qun l cng vic thng qua h thng cc b phn hnh chnh, k thut, phc v v qun l cht lng.

b. Cc b phn gip vic cho Ban Ch Huy cng trng:

Gip vic cho Ban Ch huy Cng trng c cc b phn:

Qun l cht lng v an ton VSMT.

K thut v cht lng thi cng.

Hnh chnh.

Phc v thi cng.

Cc b phn ny phi hp vi nhau nhm gip Ban Ch huy iu hnh thi cng nhp nhng, kinh t vi cht lng cao, thc hin tt quy trnh thi cng theo qui nh chung ca Ngnh v Nh nc.

c. B phn Qun l cht lng v an ton VSMT:L b phn gip vic trc tip cho ban Ch huy cng trnh, b phn ny c trch nhim gim st ton b tnh hnh thc hin cc ni qui, qui nh v m bo cht lng trong tng khu ca qu trnh thi cng, phi hp vi cc nhm AT&VSMT thuc b phn k thut thi cng trc tip thi cng cc hng mc cng trnh m bo an ton lao ng v v sinh mi trng trn ton b phm vi cng trng.

i vi cng tc m bo cht lng, b phn ny c trch nhim gim st cht ch ton b qu trnh mua sm, chun b vt t, vt liu, thit b thi cng, qu trnh thi cng cng trnh theo tiu chun ISO . Kim tra nh k hoc t xut ti cc hng mc thi cng, ngh trnh ln Ban Ch huy cng trng, Cng ty v Ch u t.

i vi cng tc an ton lao ng v VSMT, hng tun, b phn ny s kim im cc hot ng trong tun, lp bo co, xut an ton trnh ln Ban Ch huy cng trng c c s ra cc quyt nh ch o i vi cc cng vic ang tin hnh v c nh hng ch o cho cc cng vic tip theo.

d. B phn K thut v Cht lng thi cng:

B phn ny trc tip nhn lnh thi cng t ban Ch nhim cng trnh v K s trng ch huy cng trnh ch o cc i thi cng thc hin tt cc k hoch ngy, k hoch tun cng nh tng tin ra.

Cn c theo tin thi cng c Ch u t ph duyt ra cc k hoch thi cng c th cho tng cng tc, tng hng mc: lp k hoch cung ng vt t, thit b cho tng giai on nhm m bo cc cng vic s c thi cng mt cch nhanh nht nhng tt c cc cng vic, cc hng mc vn phi c thi cng phi hp mt cch hp l theo ng trnh t cng ngh m bo cht lng cng trnh.

Gim st thi cng v k thut, kt cu, khi lng, cht lng v an ton lao ng, v sinh mi trng cho vic thi cng ti tng hng mc cng nh trn ton b cng trng.

e. B phn Phc v thi cng:

y l b phn qun l cc khu vc, i, nhm thi cng c tnh cht h tr cho i thi cng xy dng nh: xng gia cng thp, kho vt thit b, i lp t in, nc phc v thi cng.

Cn c theo yu cu ca b phn k thut, b phn h tr s c cc hot ng cung ng cc vt t, vt liu my mc cho tng cng vic, tng hng mc nhm m bo vic thi cng lin tc, khng gin on.

f. B phn Hnh chnh:

B phn ny m bo cc cng vic:

Gi gn an ninh chung cho cng trng thi cng.

m bo vic thng tin lin lc gia cng trng vi Ch u t, vi Cng ty v cc c quan chc nng c lin quan khc.

Thc hin cng tc BHXH, BHYT v trin khai cng tc y t khi cn thit.

Thc hin vic tng hp khi lng thi cng theo tng k ri trnh ln Ch u t, Cng ty lm th tc thanh quyt ton cho cc cng vic hon thnh.

g. Cc i thi cng:

Bn di b phn K thut l cc i thi cng chuyn ngnh, cc i thi cng ny do cc k s c kinh nghim trc tip ch huy. Di i l cc t trng v an ton vin lm vic theo khu vc, hng mc cng trnh c phn cng. i trng chu trch nhim v cht lng, tin , an ton trong khu vc ca mnh v quyt ton lng ca i gi cho b phn gip vic thanh ton lng v khi lng hng thng.

B phn c gii qun l cc my mc, thit b thi cng hin i, ph hp vi yu cu thi cng c th ca cng trnh tin hnh cc cng vic i hi cng tc c gii ha cao hoc h tr cc i tho d trong qu trnh thi cng. B phn c chc nng h tr tt c cc t thi cng xy dng khc, i s c mt trong sut qu trnh thi cng cng trnh, thng qua ch th ca K s trng v cn c theo yu cu c th ca cng vic ca tng khu vc, tng hng mc b tr cc my mc thit b thi cng nhm p ng ti a kh nng thi cng c gii nhm y nhanh tin thi cng v nng cao cht lng, hiu qu cng vic.

Cn c vo khi lng cng vic phi thc hin chun b s lng cng nhn c chuyn mn ph hp theo yu cu ca tng cng tc thi cng.

Cc cng nhn k thut: Cng nhn hp ng di hoc ngn hn vi nh thu.

Lao ng ph thng: Dng cng nhn hp ng v thu thm lao ng ti a phng.

Ton b cng nhn thi cng trn cng trng u c ph bin k thut thi cng, hc tp v an ton lao ng, phng chng chy n..vv.

Thit b:* Vi mt bng thi cng, tnh cht cng vic ca cng trnh ny, nh thu la chn phng n thi cng bng my kt hp thi cng th cng, ch s dng nhn cng vo cc cng vic c tnh chuyn mn cao, cc cng vic m my khng th thc hin c do cc nguyn nhn ch quan hoc khch quan.

* Vic thi cng bng cc loi my chuyn dng "c gii ha ng b" cc cng tc thi cng l cn thit, vic c gii ha tng nng sut lao ng, rt ngn thi gian thi cng ng thi gim thiu ti a cc cng vic nng nhc i vi con ngi, m bo an ton lao ng.

S lng v phng n kim tra cht lng thit b phc v thi cng - Mi xem ti bng k thit b thi cng.

3.1.4. Bin php t chc tng mt bng thi cng cng cng trnh

C s tnh ton:

+ Cn c tnh cht cc cng vic phi thc hin trong cng trnh xy dng, tin thi cng cng trnh.

+ Xc nh nhu cu cn thit v vt t, vt liu, nhn lc, thit b thi cng cng trnh ng tin ra.

+ Cn c vo tnh hnh thc t v mt bng cng trng ti thi im thi cng.

+ Cc iu kin khc c tnh cht c th nh an ninh, an ton trong sn xut in trong khu vc thi cng.

Mc ch tnh ton:

+ Tnh ton lp tng mt bng thi cng m bo tnh hp l trong cng tc t chc, qun l, thi cng, trong cc dy chuyn sn xut, trnh hin tng chng cho khi di chuyn.

+ m bo tnh n nh v ph hp trong cng tc phc v v thi cng, trnh trng hp lng ph hay khng p ng nhu cu.

+ m bo cc cng trnh tm, cc bi vt liu, cu kin, cc my mc, thit b c s dng mt cch tin li nht.

+ c ly vn chuyn cc loi vt t, ph thi l ngn nht, s ln bc d t nht.

+ m bo an ton lao ng, v sinh cng nghip v phng chng chy n.

Lp tng mt bng thi cng.

Sau khi nghin cu thc t ti hin trng, nh thu phn chia cng trnh khi ph d :

Mi mt bng thi cng bao gm cc h thng di y:

- Hng ro tm + bin bo hiu.

- ng thi cng trong v ngoi cng trng.

- H thng thot nc trong mt bng thi cng.

- H thng cu ra xe.

- Nh ban ch huy cng trng, kho bi v ln tri.

- Khu vc tp kt thit b.

- H thng in, nc phc v thi cng

c nh thu tnh ton v thit lp c th nh sau:

Hng ro tm + bng bo hiu:

+ Vt liu, thit b thi cng v cc cng trnh tm c bo v trnh mt trm, cng trnh c bao che bng mt hng ro cao 2,5m c kt cu ct thp, tn trng km v c sn ph mu theo quy phm t chc thi cng trn cng trng (TCVN). Xung quanh cng trnh c b tr n chiu sng v bo v (xem bn v TC). H thng hng ro ny c duy tr trong sut qu trnh thi cng ty thuc vo iu kin thi cng c th, h thng hng ro s c di chuyn hoc lm mi nhng lun m bo an ton chc chn ngn cch khu vc ang thi cng v cc khu vc khc.

+ Bng bo hiu: Bng thng bo cng trnh xy dng c t trn hin trng. Ti cc im nguy him khi lm vic, c b phn sn xut u c t cc bin hiu cnh bo nguy him. Kch c ch vit, hon chnh v v tr ca bin bo theo quy phm TCVN.

ng thi cng:

ng thi cng ni b:

Nh thu s t chc ng vo ra cng trnh hp l v c xin kin chp thun ca Ch u t v t vn gim st. Nhng ngi khng nhim v khng c php vo cng trinh. Cng ra vo lun lun c kim sot cht ch. Chi ph cho ng tm thi cng cng trnh c Nh thu chu thanh ton bao gm trong gi trng thu. Kt cu ng ti khu vc cng r thi cng s m bo an ton trong qu trnh xe, my thi cng hot ng vo ra; khng gay ln, l v nt tng cc h lin k.

+ Nh thu m bo tuyt i cc bin php phng nga ti a khu vc ng phc v nh thu thi cng cng trnh khng b bn do qu trnh thi cng thi cng gy nn.

+ m bo khng nh hng ti sn xut xung quanh ca nh my .

+ m bo hnh lang an ton khi cc loi thit b di chuyn.

+ B tr hp l sao cho c ly vn chuyn hoc tp kt vt t c thun tin v gn nht.

H thng thot nc trong mt bng thi cng:

+ Trn mt bng thi cng nh thu u c h thng thu v thot nc thi xy dng. Nc trc khi a vo h thng thot nc chung ca khu vc phi c x l ti h thu. S tuyn thot nc - mi xem ti tng mt bng thi cng.

+ C h thng my bm ht cng bc v bin php khi thot v rnh thot nc chung bn ngoi gii quyt thot nc khn cp khi gp tri ma to hoc x l nc khi thi cng phn ngm.

H thng cu ra xe:

Cu ra xe: c xy dng ti v tr gn cng ra vo ca tng mt bng thi cng, tt c cc thit b, cc phng tin vn chuyn trc khi ta khi cng trng u c ra sch s, nc thi khi ra xe c tp trung vo h thu v x l lng, lc rc thi, tp cht trc khi i vo h thng thot nc chung. Tt c cc din tch khng nh hng n cng vic s c gi gn sch s trong sut qu trnh thi cng.

Nh ban ch huy cng trng, kho bi v ln tri:

B tr cc cng trnh tm phi hp l, sao cho s ln xy dng cng trnh tm t nht, s dng c lu nht nhng phi m bo tt nht cho qu trnh sn xut v i sng ca con ngi trn cng trng, khng lm cn tr cc cng tc thi cng, m bo an ton "cc kho cha nhin liu xng, du, cc cht d gy chy n" v v sinh mi trng.

- Nh ban ch huy cng trng:

+ Vn phng c lp dng bng tn, din tch 25m2 , c in, nc v cc tin nghi cn thit nh bn gh, t ti liu, bng..vv.

+ y l ni iu hnh, phn cng cng vic trc tip ti cng trng v l a im t chc hp giao ban hng tun hoc t xut gia nh thu v cc b phn chc nng lin quan.

- Din tch kho bi v ln tri:

+ i vi h thng kho kn:

* B tr trn mt bng thi cng hp l, khoa hc c th tn dng ti a mt bng thi cng. Cc cng trnh tm phi chc chn, m bo an ton trong sut qu trnh thi cng.

* Cc v tr c b tr lm kho trn mt bng lun m bo yu cu quy nh v an ton, v sinh mi trng v khng gy nh hng ti hot ng giao thng cng cng trong khu vc.

* Nh xe p xe my cho cn b cng nhn, nh ngh n ca, ngh tra s b tr ti mt bng ph hp theo tng giai on thi cng.

* Kho cha nguyn liu phc v thi cng: c b tr trong phm vi cng trng, nm c lp cch xa cc cng trnh kin trc li v khu vc trc tip thi cng, c y thit b cha chy.

* Nh v sinh cng trng: Nh v sinh cng trng c t cui hng gi v khut bn trong khng nh hng n mi trng v cnh quan xung quanh. Bao gm 2 phng nam v mt phng n.

+ Kho h:

Kho, bi tp kt vt liu phc v thi cng, mt bng cha cc cu kin tho d.

Ghi ch:* to mt bng thi cng rng nht ng thi hn ti a nhng nguy him tim n do cng trnh ang thi cng ph d, nn cn b, cng nhn vin ch c mt ti cng trng lc lm vic "trong gi hnh chnh". Ht gi lm vic ch cn nhn vin bo v hoc b phn qun l cng tc vn chuyn ph liu, ph thi do nh thu khng xy dng ln tri cng nhn ti cng trnh m s thu nh cho cng nhn ti a im khc ngoi cng trnh.

H thng in, nc phc v thi cng:

Lp k hoch xin php v dn ngun in, nc phc v cho thi cng:

- Phn in thi cng:

+ Cc thit b thi cng ch yu hot ng bng in v du do nh thu ch s dng in cho cc thit b c cng sut nh, cc thit b vn phng v chiu sng cng trnh.

+ Nh thu s lm vic vi Ch u t dng li ngun in c sn trn cng trng. Nh thu s b tr mt t in 3 pha cng sut 200A, c cng t v Aptomt bo v, t t in dn n cc t in ph u c cu giao, Aptomt cng sut, dy dn v bc cao su tit din, m bo an ton.

+ Ngoi ra Nh thu chun b mt my pht in 125 KVA d phng, khi mng li in b mt, my s hot ng sau 5 pht.

+ B tr cc n pha c cng sut ln m bo cho vic thi cng ban m v bo v cng trnh.

- Phn nc thi cng gm cc ngun:

+ Ngun nc sch ca Nh my xi mng Bm Sn.+ Trong trng hp Ch u t khng chp thun, mt bng thi cng hoc cht lng nc khng iu kin, chng ti s khoan ging v x l nc ti cng trnh, y s l ngun nc chnh phc v thi cng: v sinh, ra xe, ti bi, cha chy.

+ Nh thu tn dng mt s b cha c sn v to thm b cha mi trn mt bng d tr nc phc v cng tc thi cng, d kin s a n cng trng 01 b thp 10m3, cc b ny s di ng trn cc mt bng ty thuc theo tng giai on thi cng.

+ Vic a nc v v tr thi cng c thc hin bng my bm hoc bng xe ch tc.

+ Nh thu s xc nhn ch s cng t ti thi im nhn bn giao mt bng, s tin s dng in, nc s c chuyn tr Ch u t.

3.2. Bin php thi cng chi titTheo tin bn giao mt bng ca Ch u t, trc khi trin khai cc cng tc thi cng chnh, nh thu di chuyn ton b thit b, vt liu theo bng k ti tng nh v ni quy nh.

- Di chuyn thit b, vt liu.

+ My ph thy lc : Dng cu KATO 50 tn cu ln xe tapooc v chuyn, h ng ni quy nh.

+ Cc my mc thit b c ti trng ln: Dng cu v xe ti 10 tn vn chuyn.

+ Cc loi vt liu ri: Dng nhn cng bc xp ln xe 10 tn v h ng ni quy nh ca ch u t .

- Cc loi ti sn c tho d v bn giao ty thuc mt bng v v tr cng c th, Nh thu nhn bn giao v tr li Ch u t ng khi lng v gi nguyn cht lng nh khi giao nhn.

- Phng php giao nhn xut:

+ Cc loi thit b c giao nhn theo chng loi c s lng v th, km theo bin bn xc nhn hin trng.

+ Cc loi vt liu ri c vn chuyn, bc xp di s gim st ca i din Ch u t.PHN IV

BIN PHP THI CNG PH D

4.1. Mc tiu chnh

Sau khi nghin cu k thc t hin trng, gii php k thut thi cng cho cng trnh phi m bo c nhng mc tiu sau:

- T khi khi cng n khi bn giao mt bng tho d, khng lm h hng hoc nh hng n hot ng ca ton b khu vc xung quanh cng trnh, m bo ni quy an ton trong thi cng, m bo an ninh trong khu vc, tun th cht ch mi quy nh v yu cu v cng tc v sinh mi trng.

- Tun th cht ch cc quy nh, ni quy ca n v ch quan, qun l cng trnh, khu vc thi cng.

- Tun th tuyt i cc yu cu k thut c quy nh trong cc tiu chun i vi tng cng tc thi cng.

- Thi cng ng tin ra.

- Nh thu lp h s thit k k thut thi cng, bin php thi cng. Cng tc thit k da trn cc yu cu thit k chung v trnh ch u t ph duyt trc khi thi cng.

4.2. Nguyn tc chung

Thc hin cc th tc php l vi ch u t:

+ Lin h vi b phn chc nng c ph bin cc quy nh ring c tnh cht c th v an ninh, an ton in... trong khu vc thi cng . Nh thu s a cc quy nh trn vo ni dung ging dy cng vi cng tc an ninh, an ton trc khi thi cng v tuyt i tun th cc quy nh trn.

+ cng tc qun l ti sn, con ngi c tt nht chng ti s lin h vi b phn bo v ph trch an ninh lm th ra vo cho tt c cn b, cng nhn, cc my mc thi cng, cc phng tin vn chuyn thng xuyn c mt trong cng trng.

- Nh thu cng vi Ch u t, n v t vn gim st xc nh cc mc ch gii t, ch gii ng , cao v s c bo v, gi c nh, vng chc trong sut qu trnh thi cng.

- Tp kt thit b: Chng ti s tp kt cc thit b, dng phc v thi cng ti mt bng cng trng hp l theo tng giai on, to iu kin cho mt bng c rng nht, thi cng d dng nht.

- Trong qu trnh thi cng cc cng trnh ln cn c bo v, khng b nh hng, ln nt. n v thi cng thng xuyn phi hp vi ch u t kim tra v lm tt cng tc an ninh khu vc, gii quyt tt nhng khc mc ny sinh trong qu trnh thi cng. Lm tt cng tc n b nu xy ra nhng thit hi.

- Phi hp vi cc c quan chc nng hu quan ti a bn thi cng lm tt cng tc VSMT v qun l h ng, ni ph liu...

- Trn c s v tr mt bng hin ti ca cng trnh v cc quy nh ca h s thit k v an ninh, an ton, v sinh mi trng, gii php t chc tng mt bng thi cng ph d nh sau:

+ Khu vc thi cng c kho st v xc nh li trc khi bt u cng vic, cng vi ch u t v n v t vn gim st, nh thu s kim tra li mt bng, ti sn trong cng trnh, h thng ng ng ca vc cp nc, thot nc, ng dy in, ng dy in thoi "ang s dng"... nu pht hin c cc cng trnh ngm nm trong phm vi cng trng hoc nm ngoi khu vc ph d nhng c th b nh hng khi thi cng, nh thu s bo co vi ch u t v cc c quan lin quan cng x l.

+ Thit lp hng ro v h thng chn bi bao quanh cng trnh ph d.

+ Trong mt bng thi cng, hng thi cng c thc hin theo trnh t: cc hng mc st cng cng trng s c ph d trc tip theo l cc hng mc pha trong, phn mng c thc hin theo hng ngc li,

+ Chia thnh cc t th c nhim v c th thi cng cun chiu cc hng mc, c thc hin nh sau:

* Trn mt hng mc cng trnh: B phn chn bi - b phn tho d thit b, ti sn - b phn ph d phn thn cng trnh - b phn thu dn mt bng - b phn x l phn ngm... Tng t th sau khi thc hin xong cng vic chuyn mn c phn cng ti hng mc "nh" ny s chuyn sang hng mc khc, cc cng tc thi cng khng b chng cho ng thi hn ch ti a nguy him do phi lm an xen v ti cc ct thi cng khc nhau trong cng mt khu vc.

* Cng tc tho hoc ph d c thc hin t trn xung di, t mp ngoi cng trnh git li vo trong.

* Cng tc thi cng tng cng vic c th c phi kt hp gia cc loi thit b chuyn ngnh v lao ng th cng, tn dng ti a tnh nng hot ng ca cc loi thit b, hn ch ngi lao ng phi lm cc cng vic nng nhc hoc nguy him. Trn mt bng thi cng ti tng v tr cc cng vic c thc hin bng my hoc th cng ph thuc vo tnh cht, iu kin v yu cu k thut ca tng cng vic c th nh sau:

4.2.1. Tho d thu hi thit b in:

- m bo tn dng ti a vt t thu hi, cng vi vic m bo an ton v in trong cng tc ph d cc hng mc khc, Nh thu s tin hnh kho st li hin trng h thng in v xin kin ch o ca ch u t v phn thit b khng thuc kt cu cng trnh. Khi c bn giao mt bng thi cng v thng nht ca ch u t v cc thit b in Nh thu s tin hnh tho d v thu hi thit b in theo nguyn tc sau:

+ Tt c h thng ng dy, cng thit b in phi c ngt mch hon ton trc khi tin hnh tho d. Trc khi tho d lun lun phi th in bng thit b o dng in chuyn dng.

+ Tho d thit b in bng th cng vi lc lng cng nhn l nhng th chuyn ngnh v in.

+ m bo ti a trnh h hng cc thit b in v ng dy trong qu trnh tho d.

+ Vi nhng thit b nh n chiu sng trn cao (n trn, n trang tr) nh thu s dng h thng gin gio hay thit b thang chuyn dng ngnh in tin hnh tho d.

+ Bc d h thng cp in, dy din theo trnh t t h thng mch nhnh ri n h thng ng trc ri n h thng bng in atomt.

4.2.2. Tho d thu hi thit b nc:

Nh thu s trin khai cc th tc hnh vi ch u t v cc ti sn khng trong kt cu cng trnh mi tin hnh thc hin cc bin php tho d.

Nguyn tc tho d nh sau:

Kho st, v li h thng cp nc, thot nc a ra phng n tho d nhm m bo tuyt i s r r nc cp, nc thi ra cng trng gy mt v sinh mi trng. Kho cc van tng ca h thng nc cp trc khi tin hnh tho d.

- D tm im u ni vo h thng b pht c bin php bt kn hoc mi cng ty Mi trng th ht b ton b nc thi, cn b i. Trnh hin tng b pht b v trong qu trnh ph d cc hng mc khc gy mt v sinh mi trng.- Cc h thng cp thot nc, v sinh s c tin hnh tho d t trn cc phng trn cao xung di thp.

- Cng tc ny c m nhim bi i ng cng nhn chuyn nghip nghnh nc.

4.2.3. Tho d thu hi khun ca, ca, cu thang, lan can:

- Vt t thu hi t h thng khun ca, ca, cu thang, lan can, c khi lng v gi tr ln. Trn quan im tn dng ti a vt t c th thu hi c gim chi ph ph d cng trnh. Nh thu tin hnh tho d h thng ny vi i ng th chuyn ngnh (th mc) c tay ngh cao, kinh nghim lu nm.

- S dng cy chng gia c cc kt cu m cc cu kin g tham gia chu lc (khun ca).

- H thng ca g c tho lp thnh tng phn ring bit v c sp xp ring theo tng cu kin nh cnh ca, khun ca, bn l. Cc cu kin ca tng loi ca c nh du k hiu ring bit.

4.2.4. Tho d thu hi vch nhm knh:

- Vch nhm knh ch yu l pha mt ngoi ca nh c chiu cao ln. m bo ti a trong cng tc an ton, Nh thu phi s dng h thng gin gio, sn cng tc n cao tho d tin hnh thi cng tho d.

- S dng th cng kt hp cc thit b cm tay nh my ct, my khoan tho d cc cu kin, khung nhm, vch knh thnh cc cu kin nh ri tin hnh chuyn xung bng ti in hoc th cng mang vc xung v tr tp kt.

- S dng h thng chng, ging leo buc cc cu kin vo pha trong nh trnh hin tng cc cu kin b ri xung t trn cao khi b ct t cc lin kt trong qu trnh tho d.

- Hn ch ti a v cc tm, vch knh m bao an ton lao ng tuyt i.

4.2.5. Tho d thu hi vt liu thp trong BT:

- Khi lng vt liu thp trong b tng ch yu l hai loi: thp xy dng trong cc kt cu BTCT ca cc nh khung ct chu lc v cc cu kin BTCT khc.

+ Vi h thng thp trong b tng.

Sau khi ph d hon ton phn BT trong kt cu BTCT mi tin hnh ct thp thu hi vt t thp trong BT. Cc thanh thp chu lc lun lun c ct sau cng. Thu hi thp sn trc ri n thp dm sau cng l thp ct. Cng tc thu hi thp trong BT phi kt hp cht ch vi cng tc ph d kt cu BT trong BTCT. Nh thu lun c sn cc h thng chng cc kt cu khc khi tin hnh thu hi ct t cc li thp m bo khng b nh hng n cc kt cu cha ph d.

+ Vt t thp trong BT thu hi c vn chuyn tp kt vo kho bi ca Nh thu trn cng trng bng th cng.

+ Thnh lp cc k hoch thu hi vt t v tin hnh thanh l ngay sau khi thu hi c khi lng vt t m bo mt bng thi cng tng cng trnh lun lun rng ri.

+ i ng cng nhn thc hin cng tc thu hi l nhng cng nhn chuyn nghip (Th st). Thit b ct dng cc loi my ct tay, km cng lc,ko cng lc. Hoc my ct s dng in. Tuyt i m bo quy nh v an ton trong cng tc hn ct cc cu kin thp v thp.

4.2.6. Tho d thu hi kt cu mi tn x g thp:

- Tin hnh u tin m bo ng nguyn tc ph d t trn cao xung thp. H thng mi, v x g thp c cc nh . V vy cng tc tho d thu hi h thng mi tn tun theo cc nguyn tc sau:

- Tho d phn tn lp trc

- Tho d phn h thng khung thp mi

- Vn chuyn vt t thu hi c a xung di.

- Tho d phn tn lp bng th cng kt hp vi my khoan, thit b tho vt lin kt tn v h thng khung. Hn ch vic lm rch thng tn mc thp nht.

- Tho d h thng khung thp mi bng cch ct ri cu kin thnh cc phn nh hn theo nguyn tc tho d cc b i m bo tnh bt bin hinh ca kt cu khung.

- Lc lng nhn cng s dng l cc cng nhn tay ngh cao (th st) c gim st bi cn b k thut hiu bit v kt cu. Cc thit b dng my ct, my ca, my hn.

- Vic chuyn cc cu kin t trn cao xung bng h thng palng xch, ti in hoc dng cu t hnh.

- Trnh t thi cng cng tc ny l t trn xung di, t ngoi vo ngoi.

- Cng tc ny c thc hin u tin ngay xong khi thc hin cc bin php an ton lao ng nh ct b h thng in c ca to nh cn tho d.

4.2.7. Cng tc ph d kt cu mi, sn b tng v tng ca cng trnh:Nh thu trin khai thi cng ph d kt cu theo nguyn tc t trn xung di, t mp ngoi cng trnh vo trong. Trc khi thi cng ph d i tr, phi ph d ti cc v tr tip gip nhm tch ri khu vc ph d vi cc cng trnh ln cn, hn ch t nht chn ng gy nh hng xu ti cc cng trnh kin trc xung quanh.

* Chun b h thng dn gio, sn cng tc, lan can an ton m bo cho ngi thi cng an ton khi thi cng trn cao.

* Dng km thy lc, ba cn, lao ng th cng ph cc kt cu sn b tng ct thp.

* Dng my hn ct cc li ct thp m bo iu kin vn chuyn xung mt t.

* Vn chuyn ph thi xung mt t m bo v sinh mi trng...

4.2.8. i vi cng tc ph d pane, dm, ct BTCT:

* Chun b h thng dn gio, sn cng tc, lan can an ton m bo cho ngi thi cng an ton khi thi cng trn cao.

* Dng cu treo gia cc chi tit panen, dm, ct.

* Dng km my thy lc, ba cn kt hp vi lao ng th cng ph cc lin kt panen, dm, ct cn ph d vi phn cha ph hoc cc kt cu khc.

* Dng my hn ct cc lin kt.

* Cu h panen, dm, ct xung mt t.

* Vn chuyn ph thi ri xung mt t bng h thng mng tn.

4.2.9. Ph d tng gch:* Chun b h thng dn gio, sn cng tc, lan can an ton m bo cho ngi thi cng an ton khi thi cng trn cao.

* S dng cc my mc thit b ph hp kt hp vi phng php th cng ph kt cu tng gch c chiu dy ln.

* m bo an ton chung, kt cu tng gch s c ph d bng th cng kt hp vi ba cn. Cng nhn ng trn gio p ba t ngoi vo trong ton b vt liu ri vo trong lng nh, trnh hin tng khi vt liu ln ri t do xung di. Khi ng trn gin gio p ph ngi cng nhn phi thc hin cng vic t t, khng c p kt cu thnh cc mng ln m phi g, p tng lp gch xy, m bo cao ph dn bng nhau, t trn cao tr xung. Trong lc thi cng p ph song song tin hnh vic vn chuyn ph thi xung di mt t nhm cht ti t nht ln mt sn nh.

* Cc bc tng mp ngoi cng trnh ph d nh nhng, cn thn, tuyt i khng vt liu ri hoc vng ra pha ngoi.

* Trong lc thi cng ph d nh thu dng my bm nc cng sut ln phun to m chng bi lm nhim mi trng.

4.2.10. Ph d cc kt cu phn ngm:* Dng lao ng th cng kt hp vi my xc o h kt cu cn ph d.

* Dng ba cn kt hp vi my ph b tng thy lc ph d cc chi tit phn ngm thnh cc cu kin nng t 1 n 10 tn.

* Ct ri lin kt v cu cc cu kin v v tr tp kt.

* Lp hon tr h mng.

Khi thi cng phn ngm, cng tc o t ph mng c thc hin bng my hoc th cng ph thuc vo v tr hoc iu kin mt bng ca cc h o. Cc h o c chiu su ln hn 1m (-1m) c nh taluy, trnh st l ng thi c bin php c chn t m bo an ton cho ngi v thit b thi cng.

4.2.11. Bin php thi cng bng my ph b tng km thy lc:

Ti cc v tr thch hp; Nh thu s thi cng bng my ph b tng km thy lc y nhanh tin thi cng.

* Dng lan can, tn bt ton b cc ca ra vo, phng trnh ngi i li trong qu trnh thi cng ph d bng my.

* Dng my ph b tng km thy lc ph thng lp b tng sn cho b tng, ph thi ri thng xung nn di. Sau khi ph b ht lp b tng, sn nh ch cn cc lp thp, dng km ct b lin kt thp vi kt cu dm, ging.

* H thng dm, ging ca nh c chia nh, cu xung di mt t bng cu hoc bng my ph b tng km thy lc (my ph c chc nng cu) ri c ph nt bng my.

* i vi tng gch dng my ph b tng km thy lc ph khong 3 n 4 hng gch xy mt ln theo hng ngang, khi ph c 2/3 on tng pha trn th cng tc ph d tm dng vn chuyn ph thi ra ngoi, xc ln xe i. khi ph d on chn tng pha di, my thi cng s khng b vng, hn ch n cng sut lm vic.

* Khi ph d ht cc kt cu nh nh thu tin hnh thu hi vt t, vn chuyn ph thi ra khi mt bng cng trnh, chun b ph d cc hng mc tip theo.

* Trong lc thi cng ph d bng my ting n v tn sut bi s tng ln rt nhiu, do nh thu s tng cng h thng chn bi, h thng bm nc to m, nhm hn ch bi t nht nh hng ti cnh quan v v sinh mi trng xung quanh.

4.2.12. Vn chuyn ph thi t trn cao xung mt t:* Ty thuc vo khi lng thc hin hng ngy ca tng khu vc thi cng, nh thu s b tr s lng my xc + xe vn chuyn thc hin.

* Cc vt liu ph thi phi c vn chuyn v bi tp kt bng xe chuyn dng c mui bt ng theo tiu chun qui nh.

4.2.13. Thi gian thi cng:

* Cng tc tho, ph d cng trnh chnh, ph d b tng thu hi thp c thc hin vo ban ngy t 7h30 n 17h "8 ting". Trong qu trnh thi cng vic ph d cc cu kin ti tng hng mc v thu hi vt t trong tin hnh song song, khng n tc gy cn tr.

* Cng tc vn chuyn vt t, ph thi c thc hin t 22h n 5h nu c s ng ca cc c quan, h dn xung quanh. Nu khng c s chp thun s thc hin khng qu 24h.

- m bo tin thi cng nh thu s tho, ph d cc cu kin chnh ca tng hng mc v chuyn ngay cc loi vt t, kt cu b tng... v bi tp kt trong mt bng cng trnh, cng tc thu hi vt t, thp trong b tng c trin khai cng lc vi cng tc ph d chnh. Cc loi vt t (theo bng k) khng nm trong din thanh l, c thu hi v tr ng khi lng, t cht lng c th s dng li theo yu cu ca Ch u t - Nh thu s n b khng iu kin cc vt t trn nu trong qu trnh thi cng do li nh thu gy ra hng hc hoc s c.

4.3. Cng tc chng n, chng bi v an tonDo c im cng trnh nm gip khu vc sn xut ca nh my cho nn cc cng tc anh ton cho ngi v cc cng trnh ln cn, chng n, chng bi c nh thu nh gi l cc k cn thit v quan trng trong qu trnh thi cng, c thc hin nh sau:

4.3.1. Hng ro bo v, chng bi v bin php m bo an ton khi thi cng:

* Nh thu chia tng mt bng thi cng thnh cc khu vc thi cng ring, ti cc khu vc ny nh thu u thit lp hng ro ngn cch khu vc ang thi cng v cc khu vc khc.

* Dng ho ro, chng n, chng bi: Tn dng hng ro c sn ca cng trnh, phn cn li dng hng ro phi 48 cao 4m chng bao vng quanh cc khu vc cng trnh cn ph d c cng ra vo ngn cch khu vc cng trng v khu vc ang hot ng hoc khu dn c ln cn. Lp dng hng ro chn bi bng h thng c che chn bt da v li ni lng.

- H thng chn bi t xa. * Ti tng hng mc "tng nh" cn ph d, nh thu lp dng h thng gio ng phi 48 bao vng quanh, cao bng chiu cao cng trnh hin hu, h thng gio c neo gi chc chn, an ton vo cng trnh. Che bt da pha ngoi, lp trong che chn bng li ni lng, ton b h thng chn bi c b tr hnh rng ca ht m v c lin kt vi h thng gio ng.- H thng chn bi trc tip.

* Cng tc vn chuyn ph thi t trn cao xung di phi vo trong ng kn, c thit k bng tn hoc g.

* Hng ngy c cng nhn lm v sinh lin tc trn cng trnh,thu gom ph thi v phun nc thng xuyn, trnh hin tng tri hanh kh, gp gi ln bi bay ra ngoi ng hoc bay sang cc khu vc ln cn gy nh hng xu ti mi trng xung quanh khu vc thi cng.

Ghi ch: Ti mt s hng mc h thng chn bi c lp dng bng h thng gio pan c th tn dng ti a tnh nng v thi gian thi cng: dn gio thi cng, ng thi cng trn cao, chn bi.

4.3.2. Bin php m bo an ton cho cc cng trnh ln cn:

* Ti cc v tr st vi cc cng trnh kin trc lin k

* B tr li chn vt ri, chn bi, lan can an ton ti tng ct thi cng.

* Ch thi cng ph d bng my ph b tng thy lc ti cc v tr an ton, khong cch xa vi cc cng trnh kin trc ln cn lin k.

4.4. Trnh t thi cng

Sau khi thc hin cc th tc php l bt buc lin quan ti vic thi cng cng trnh, chun b mt bng thi cng, huy ng thit b xe my, mua cc loi bo him, t chc ph bin k thut thi cng v ging dy v cng tc an ton cho cn b, cng nhn vin... Nh thu trin khai thi cng ph d cng trnh.

Cn c kho st thc t ti hin trng, d kin ca ch u t v tin bn giao mt bng cc hng mc trong cng trnh nu ti h s mi thu. cng tc thi cng ph d khng lm nh hng ti hot ng ca cc khu vc ln cn , ng thi c th phi hp kt hp vic thi cng ph d Cc bc tin hnh trin khai ph d:

* Lp dng hng ro tm v h thng chn bi cao 4m bao quanh

- Ph d cc kt cu phn ni to mt bng lm ni cha vt t, cu kin b tng "khu vc ph nt cc cu kin b tng thu hi thp" v ph thi trc khi vn chuyn.

- Lp dng nh ban ch huy cng trnh, ln tri, kho tng v xy dng cu ra xe...

- Lp dng h thng chn bi bng ng thp phi 48 cao bng chiu cao cng trnh, h thng ny c lin kt bng kha gio, lp ngoi che bt da chn bi, lp trong che bt cc ni lng chng vt liu khi ph d vng ra ngoi, h thng ny x c tho d khi ph d v v sinh hon tr mt bng.- Dng cu treo gi cc kt cu ct dng km ct chn ct - cu h xung v tr tp kt trong mt bng. + Ph d lp nn nh.

+ Dng lao ng th cng kt hp vi my xc o l cc kt cu mng cn ph d.

+ Dng ba cn kt hp vi my ph b tng thy lc ct, chi nh kt cu mng thnh tng on nh, ph hp vi sc nng ca cn cu.

+ Ct ri lin kt ( dng cu cu cc kt cu mng v v tr tp kt ph thi trong cng trng.

+ Ph d kt cu mng (Sau khi c CT cho php)+ Dng lao ng th cng kt hp vi my xc o l cc kt cu mng cn ph d.

+ Dng ba cn kt hp vi my ph b tng thy lc ct, chi nh kt cu mng thnh tng on nh, ph hp vi sc nng ca cn cu.

+ Ct ri lin kt -> dng cu cu cc kt cu mng v v tr tp kt ph thi trong cng trng.

- San t hon tr mt bng.

Ti cc v tr h mng c x l nh thu dng lao ng th cng s dng cc thit b m cm tay m nn theo tng lp cho n khi lp ht h mng, cc thit b san, m bng my c huy ng khi iu kin thi cng.

Ghi ch:* Ti tt c cc v tr tip gip vi cng trnh kin trc li hoc ng giao thng nh thu u lp dng h thng sn cng v che chn m bo an ton trc khi thi cng tho d.

* Nh thu trin khai thi cng trn tng th mt bng cng trnh, tho d mt hoc nhiu hng mc ty thuc theo khi lng ca cc hng mc. Bin php thi cng bng my hoc th cng c kt hp hi ha, ph hp theo tnh cht c th, kt cu ca tng cng vic phi thc hin. Cc kt cu trn cao, nm ngoi phm vi hot ng ca my hoc ch ng thi cng ph tch ri hng mc cn tho d, to khong cch hnh lang an ton cho cc cng trnh ln cn th cng vic ny c thc hin bng my khoan cm tay, ba cn kt hp vi lao ng th cng. Khi h chiu cao cng trnh xung cao an ton hoc iu kin v hnh lang an ton nh thu s s dng my ph b tng km thy lc y nhanh tin thi cng.

4.5. Chn thit b phc v thi cng

4.5.1 Chn my o t:

My o t c chn sao cho m bo kt hp hi ho gia c im s dng my vi cc yu t c bn ca cng trnh nh :

- Lng trt cn xc trong mt ca.

- Cp t o, mc nc ngm.

- Hnh dng kch thc, chiu su h o.

- iu kin chuyn ch, chng ngi vt.

- Khi lng t o v thi gian thi cng....

Da vo nguyn tc ta chn my o l my xc gu nghch (mt gu), dn ng thu lc, m hiu EO-2621A, c cc thng s k thut sau:

Thng s

M hiuq

(m3)R

(m)h

(m)H

(m)Trng lng my (T)tck(giy)b

chiu rng (m)c

(m)

EO-2621A0,2552,23,35,1202,12,46

- Nng sut my o c tnh theo cng thc:

N= (m3/h)

Trong :

q : dung tch gu, q = 0,25 (m3).

K - h s y gu, ph thuc vo loi gu, cp m ca t. Vi gu nghch, t st pha thuc t cp I m ta c K = 1,2 ( 1,4. Ly K = 1,3.

Kt - h s ti ca t (Kt =1,1(1,5), ly Kt =1,1.

Nck - s chu k xc trong mt gi (3600 giy), Nck =(h-1).

Tck = tck.Kvt.Kquay - thi gian ca mt chu k, (s).

tck - thi gian ca mt chu k, khi gc quay (q = 90o, t ti bi, ta c

tck =20 (s).

Kvt =1,1 - trng hp trc tip ln thng xe.

Kquay=1,1 - ly vi gc quay (=110o.

Ktg=0,8 - h s s dng thi gian.

Ta c: Tck = 20(1,1(1,1 = 24,2 (s)

( Nck = 3600/24,2 = 148,76 (h-1).( Nng sut my o : N == 35,2 (m3/h).- Nng sut my o trong mt ca: Nca =35,2( 8 = 281,6 (m3/ca).

Vi phng php sa h mng ln 1 kt hp my o, lng t do my o o ln c tnh bng tng ca phn do my o v phn do o, ht bng th cng ln 1 nh sau: V= 27209 m3.4.5.2. Chn phng tin phc v thi cng:

4.5.2.1. Chn cy chng sn, dm:

S dng gio PAL do hng Ho Pht ch to.

a) u im ca gio PAL :

- Gio PAL l mt chn chng vn nng bo m an ton v kinh t.

- Gio PAL c th s dng thch hp cho mi cng trnh xy dng vi nhng kt cu nng t cao ln.

- Gio PAL lm bng thp nh, n gin, thun tin cho vic lp dng, tho d, vn chuyn nn gim gi thnh cng trnh.

b) Cu to gio PAL :

Gio PAL c thit k trn c s mt h khung tam gic c lp dng theo kiu tam gic hoc t gic cng cc ph kin km theo nh:

- Phn khung tam gic tiu chun.

- Thanh ging cho v ging ngang.

- Kch chn ct v u ct.

- Khp ni khung.

- Cht gi khp ni.

Bng cao v ti trng cho php :

Lc gii hn ca ct chng (Kg)35300228901600011800905071705810

Chiu cao (m)67,5910,51213,515

c) Trnh t lp dng:

- t b kch (gm v kch), lin kt cc b kch vi nhau bng ging nm ngang v ging cho.

- Lp khung tam gic vo tng b kch, iu chnh cc b phn cui ca khung tam gic tip xc vi ai c cnh.

- Lp tip cc thanh ging nm ngang v ging cho.

- Lng khp ni v lm cht chng bng cht gi. Sau chng thm mt khung ph ln trn.

- Lp cc kch pha trn.

Ton b h thng ca gi khung tam gic sau khi lp dng xong c th iu chnh chiu cao nh h kch di trong khong t 0 n 750 mm.

( Trong khi lp dng chn chng gio PAL cn ch nhng im sau :

- Lp cc thanh ging ngang theo hai phng vung gc v chng chuyn v bng ging cho. Trong khi dng lp khng c thay th cc b phn v ph kin ca gio bng cc vt khc.

- Ton b h chn chng phi c lin kt vng chc v iu chnh cao thp bng cc ai c cnh ca cc b kch.

- Phi iu chnh khp ni ng v tr lp c cht gi khp ni.

4.5.2.2. Chn cy chng :

S dng cy chng n kim loi LENEX. Da vo chiu di v sc chu ti ta chn cy chng V1 ca hng LENEX c cc thng s sau:

- Chiu di ln nht: 3300mm

- Chiu di nh nht: 1800mm

- Chiu di ng trn:1800mm

- Chiu di on iu chnh: 120mm

- Sc chu ti ln nht khi lmin: 2200kG

- Sc chu ti ln nht khi lmax: 1700kG

- Trng lng:12,3kG

PHN V TIN THI CNG

5.1. Tin thi cng

* Tin thi cng c nh thu a ra trn cc c s phn tch khi lng cc cng vic phi thc hin, Tin bn giao mt bng ca ch u t, mt bng thi cng thc t.

* Tng thi gian thi cng cng trnh: 4 thng.5.2. Bin php m bo tin thi cng

5.2.1. Nhn lc

* c b my iu hnh, ch huy thi cng ti tr s v cng trng c nhiu kinh nghim.

* Cc t, i thi cng trn cng trng lnh ngh, c chuyn mn cao v c nhiu kinh nghim qua cc cng trnh thi cng c tnh cht cng vic tng t khc.

5.2.2. Cung cp thit b, xe my:

* Nh thu s iu ng cc loi thit b theo yu cu c th ca cng trng; nhanh, kp thi.

* S dng cc loi thit b c cht lng cao, c tnh nng ph hp vi cc cng vic thc hin ti cng trnh ny.

* C k hoch d phng khi thit b hng hc hoc tng cng thit b khi phi thc hin cng vic b li thi gian khng thi cng do cc iu kin bt kh khng.

* Cc thit b phi i thu nh thu c phng n v s chun b chu o, cc i tc cung cp l cc n v c b dy quan h, c kh nng cung cp thit b cao - Mi xem hp ng nguyn tc.

5.2.3. Bin php m bo tin thi cng tho v ph d cc kt cu:* Cc thit b nh: Gio, ng gio, thit b cm tay.v,v. y c iu ng ti cng trnh kp thi theo tng giai on thi cng.

* Cc cng tc thi cng c thc hin ch yu bng cc thit b chuyn ngnh, ch s dng nhn cng trong cc iu kin nh m bo an ton cho cc cng trnh ln cn hoc cc thit b my thi cng khng th thc hin c.

* S dng thit b thi cng mi nh: Ba ph b tng thy lc, km bp b tng thy lc - cng sut lm vic ln hn nhiu ln so vi my nn kh, ba cn hoc th cng. Khi tm hot ng ca my ph b tng thy lc pht huy tt nh thu s trin khai thi cng bng my y mnh tin thi cng.

* Trnh t thi cng tho d hoc ph d hp l: Thc hin t trn xung di, thi cng cun chiu cc hng mc.

5.2.4. Bin php m bo cng tc vn chuyn vt liu v ph thi:* Nh thu huy ng mt lng ln xe c ti trng ln phc v cng tc vn chuyn.

* Cng tc vn chuyn ph thi c thc hin trong v sau khi tng hng mc "tng nh" c ph d xong, tn dng ti a thi gian thi cng ng thi trnh hin tng n tc gy cn tr trong cng trng.

PHN VI BIN PHP M BO AN NINH,AN TON LAO NG V SINH MI TRNG V PHNG CHNG HA HON

6.1. Bin php m bo an ninh

- m bo an ninh, trt t, v sinh mi trng cng nh to iu kin thun li, em li hiu qu cao nht trong qu trnh thi cng. n v thi cng s tin hnh quy hng ro tm v lp h thng chn bi lm gii hn v cch ly khu vc thi cng vi cc khu dn c.

- Ton b hng ro ngn cch nu trn c gn bin bo hiu cnh bo theo quy nh d nhn bit t xa, hng ro ny c thit k kin c chu c gi, cc chn ng v cc hnh ng c tnh t nhp vo khu vc cng trng vi xu.

- n v thi cng s ch ng lin h vi chnh quyn s ti ng k tm tr cho ton b cn b, cng nhn vin thi cng trn cng trnh. Tip xc vi b phn chu trch nhim v cng tc an ninh ca ch u t tho lun v thng nht ni quy trong khu vc , cng trng. Xin c cp th cho cn b, cng nhn lao ng ra vo cng trng, cng tc ny nhm kim sot s lng cn b, cng nhn lao ng ra vo khu vc cng trng hng ngy, khng ngi l tr trn v lm cc cng vic ngoi s kim sot ca nh thu. m bo khng gy nh hng xu n cng tc an ninh trt t ca cng trng v khu vc.

- Lc lng bo v ca nh thu phi phi hp vi b phn bo v v cng an khu vc kim sot cht ch con ngi, an ninh, ti sn trn cng trng cng nh khu vc nh ngh.

- Cn b, cng nhn thi cng ti cng trnh u c l lch tt, tinh thn trch nhim cao, ng thi nh thu s t chc qun trit, ng vin tinh thn cao cnh gic cho lc lng ny nhm gi gn an ninh trt t trn cng trnh c tt nht.

- Nh thu cam kt hon tr li tt c cc ti sn ca cng hay t b thit hi nu do cng vic ca Nh thu gy ra.

6.2. Bin php m bo an ton lao ng:

- Cng nhn lm vic trn cng trng phi c y cc tiu chun sau:

- tui theo qui nh ca nh nc i vi tng loi ngh.

- C giy chng nhn bo m sc kho, theo yu cu ngh do c quan y t cp. nh k kim tra sc kho

- C giy chng nhn hc tp v kim tra t yu cu v an ton lao ng ph hp vi cng vic do gim c n v xc nhn.

- c trang b y cc phng tin bo v c nhn ph hp iu kin lm vic theo qui nh.Cng tc thi cng ph d c quy trnh ngc so vi xy lp, tim n nhiu nguy him khi thi cng ng thi ti cng trnh ny cc thit b c gii, cc phng tin vn chuyn hot ng trong v ngoi phm vi cng trng rt nhiu v vy phi c bin php thi cng chi tit cho tng cng vic, tnh ton ht cc kh nng c th xy ra t c bin php thch hp x l.

6.2.1. Phn loi cng tc v thi gian thi cng

- Nhng cng vic thi cng ban ngy;

+ Thi cng ph d

+ Thi cng tho d

+ V sinh cng nghip

- Nhng cng vic thi cng ban m:

+ Vn chuyn vt t, vt liu ra vo cng trng.

+ Vn chuyn ph thi xy dng i.

6.2.2. An ton lao ng v phng nga tai nn:a) An ton trong cng tc hn, ct:- My hn c v kn c ni vi ngun in.- Dy ti in n my dng loi bc cao su mm khi ni dy th ni bng phng php hn ri bc cch in ch ni. on dy ti in ni t ngun n my khng di qu 15m.

- Chui km hn c lm bng vt liu cch in cch nhit tt.

- Ch c th in mi c ni in t li in vo my hn hoc tho lp sa cha my hn.

- C tm chn bng vt liu khng chy ngn x hn v kim loi bn ra xung quanh ni hn.

b) An ton trong s dng in:

- Vic lp t v s dng cc thit b in v li in thi cng tun theo cc iu di y v theo tiu chun An ton in trong xy dng TCVN 4036-85.

- Cng nhn in phi c hc, kim tra v cp giy chng nhn t yu cu k thut an ton in . Cng nhn in lm vic khu vc no trn cng trng phi nm vng s cung cp in ca khu vc .

- S dng in trn cng trng phi c s mng in , c cu dao chung , cu dao phn on c th ct in ton b hay tng khu vc cng trng khi cn thit .

- Cc dy dn phc v thi cng tng khu vc cng trng phi l dy bc cch in , cc dy phi c mc trn ct hoc gi chc chn v cao t nht 2.5m i vi mt bng thi cng v 5m i vi ni c xe c i qua . Cc dy di 2.5m k t mt nn hoc sn thao tc phi dng dy cp bc cao su cch in

- Tt c cc thit b in u phi c bo v ngn mch v qu ti , cc thit b bo v (cu ch , r le, atomt...) u phi chn ph hp vi cp in p v dng in ca thit b hoc nhm thit b c bo v.

- Khi s dng cc thit b cm tay chy in , cng nhn khng c thao tc trn bc thang m phi ng trn gi m bo an ton. i vi nhng dng c nng phi lm gi treo hoc cc phng tin m bo an ton , cng nhn phi i gng tay cch in , ng v giy.

- Ch c cng nhn in, ngi c trc tip phn cng mi c sa cha, u hoc ngt cc thit b in ra khi li in , ch c tho m b phn bao che, tho ni cc dy dn vo thit b in, sa cha tho cc dy dn v lm cc vic c lin quan n ng dy ti in trn khi khng c in p.

- Cm s dng cc n chiu sng c nh lm n cm tay, cc n chiu sng ch lm vic phi t cao v gc nghing ph hp khng lm chi mt do tia sng.

- Cm s dng ngun in trn cng trng lm hng ro bo v.

c) An ton cho my mc:

- Tt c cc loi xe my thit b c s dng v qun l theo TCVN 5308-91.

- Xe my thit b u m bo c h s k thut trong nu r cc thng s k thut, hng dn lp t, vn chuyn, bo qun, s dng v sa cha. C s theo di tnh trng s giao ca

- Xe my thit b u m bo c h s k thut trong nu r cc thng s k thut, hng dn lp t, vn chuyn, bo qun, s dng v sa cha. C s theo di tnh trng s giao ca.

- Nim yt ti v tr thit b bng ni quy s dng thit b . Bng ni dung k to, r rng.

Nhng xe my c dn in ng u c:

+ Bc cch in hoc che kn phn mang in.

+ Ni t bo v phn kim loi khng mang in ca xe my.

Kt cu ca xe my m bo:

+ C tn hiu khi my ch lm vic khng bnh thng.

+ Thit b di ng c trang b tn hiu thit b m thanh hoc nh sng.

Trc khi tin hnh thi cng phi kim tra li ton b h thng an ton ca xe, my, thit b, dn gio v trang b phng h lao ng, m bo an ton mi t chc thi cng. Khi thi cng v ban m phi m bo nh sng.

- Trc khi tin hnh thi cng phi kim tra li ton b h thng an ton ca xe, my, thit b, dn gio v trang b phng h lao ng, m bo an ton mi t chc thi cng. Khi thi cng v ban m phi m bo nh sng.

- i vi cng nhn xy dng khng chuyn v in phi c ph bin c mt s hiu bit an ton v in.

- Ni c bin bo nguy him nu c vic cn phi tun theo s hng dn ca ngi c trch nhim.

- Th vn hnh my thi cng dng in ti cng trng phi c o to v c kim tra. Khng mc cc bnh tim, phi, thn kinh, tai, mt.

- Trong qa trnh thi cng trnh ngi s dng cc loi my mc cn c ph bin y cc quy nh v an ton theo lut hin hnh

d) An ton ngoi cng trng:

- Ton b khu xy dng c b tr h thng kho tng vt t, thit b ngn cch bng hng ro tm c hai cng c b tr h thng in chiu sng ban m v bo v gc 24/24. CBCNV ra vo phi c th m bo ng ngi ng vic.

- Ngoi ra chng ti cn kt hp cht ch vi cc c quan a phng trn a bn ( Cnh st, Cng an phng ) duy tr trt t cho cng trng v gii quyt mi vng mc xy ra khi cn thit

- Cng nhn, cn b trong cng trng phi c mc ng phc c biu hin ca cng ty, c th dn nh v ghi tn c th

- An ton chy, n: ( TCVN 32 - 89 , 3255 - 86)- Vi phng chm phng hn chng chng ti ch bin php gio dc phng nga bng mi cch tuyn truyn ph bin, kim tra n c thng xuyn v c cc hnh thc s l k lut thch ng c th nh :+ Cm khng s dng hoc gy pht la ba bi trn cng trng.+ Hng ngy sau khi ht gi lm vic phi kim tra ct in cc khu vc khng cn thit.+ Khng s dng in tu tin cu mc ba bi, un nu trn cng trng, dng in khng c phch v cm.

+ Khng cht d chy gn cc khu vc c dy in bng in

Xp xp vt t gn gng khoa hc tng loi.

- Khng cc chng ngai vt trn cc ng i chnh c thit k yu cu cho phng ho.

- Cc phng tin phng chy cha chy phi ni d thy, c bnh bt v my bm, b nc cu ho d phng.

- Lp h thng bin cm, bin bo, c phng n v thc tp kim tra ng cu khi c s c.

- Qun l cht ch vt liu d chy n. Khng cho bt k ai t mang vt liu d chy n vo khu vc thi cng.

- Thng xuyn kim tra ng in, cu dao in, cc thit b dng in v ph bin cho cng nhn c thc trong cng vic dng in, dng la phng chy. C b nc, bnh bt v my bm nc phng dp la khi c ha hon xy ra.

- Nghim chnh chp hnh cc quy nh, bin php thi cng hn hi v ct hi v.v...

- ng ra vo v mt bng trong khu vc phi thng thong, khng c vt cn tr m bo xe cu ha ca khu vc vo thun li khi c ha hon xy ra

- Khi tin hnh hn thp phi s dng mi bin php m bo an ton lao ng, tuyt i tun theo cc quy nh v an ton lao ng khng xy ra chy n. Phi s dng h thng thng gi y v thch hp, cn c ngi gim st, h tr bn ngoi b canh chng s an ton cho nhng cng nhn lm vic trong .

e) An ton cho i tng th 3:

- Cc cng ra vo cng trng phi t bin bo, b tr cc n bo v ti cng v cc gc khu vc thi cng.

- Xe my hot ng m bo an ton giao thng tuyt i

- Trong qu trnh ph d ti nhng v tr ln cn Nh thu lun ch v thit k cc h thng m bo trnh bi v cc vt ri t trn cao xung. C th l h thng bt an ton v bt chng bi trong bn v thit k k thut thi cng.f) An ninh trt t:

- Ton b ti sn ca cng trnh c bo qun v bo v chu o. Cng tc an ninh bo v c c bit ch , chnh v vy trn cng trng duy tr k lut lao ng, ni quy v ch trch nhim ca tng ngi ch huy cng trng ti tng cn b cng nhn vin. C ch bn giao r rng, chnh xc trnh gy mt mt v thit hi vt t, thit b v ti sn ni chung.

- Cng trng thng xuyn c c bo v 24/24h, bui ti c h thng n in chiu sng bo v cng trnh.T bo v lm vic chia thnh 03 ca, mi ca u ghi s trc ban y v ca cui bn giao cho kp trc sau.

- Cng ty thng xuyn kt hp cht ch vi cc c quan chc nng, Chnh quyn s ti bo v an ninh chung cho cng trnh.

- Chng ti s c trch nhim i vi an ton cho ngi v cc phng tin giao thng phc v hot ng ca phng v trong khu vc cng trng. Ton b cc h o, my mc phng tin thi cng c kh nng gy nguy him cho ngi v cc phng tin giao thng s phi c ngn v cm bin bo cnh bo nguy him tt c cc ng ni b s c bo dng iu kin an ton.

- Nhng khu hiu an ton trong sn xut v thi cng s c t ti nhiu v tr trn cng trng, tt c cc ni quy v vn bn s c trnh by v th hin sao cho nhng ngi vn hnh ca chng ti hoc nhng b phn khc c th hiu c v nhng vn bn ny s c duy tr trong sut thi gian thi cng. Chng ti s p dng cc phng php phng nga cn thit nh nhc nh, cnh bo i vi cc ri ro c th gy thit hi v lm b thng nhng ngi trong v vng ln cn cng trng. Tun th mi quy nh v phng trnh tai nn v an ton trong cc cng tc khc nhau ca cng trnh v mi quy nh ca nh nc Vit Nam.

- Cc cn b an ton c chuyn mn v an ton lao ng v c kinh nghim vi cng vic l ngi s thit lp cc bin php bo v sc khe v phng trnh tai nn ng thi theo di cc quy nh v ni quy an ton chng chng lun lun c hiu lc. Nghim khc yu cu ton b cn b, cng nhn, k thut, nhn vin v khch. phi i m an ton khi trong cng trng, cng nhn lm vic trn cao phi s dng tht lng v cc thit b an ton khc.

- Cng nhn lm vic trn cng trng phi c y cc tiu chun sau:

* tui theo quy nh ca nh nc i vi tng loi ngh

* C giy chng nhn m bo sc khe, theo yu cu ngh nghip do c quan y t cp. nh k kim tra sc khe.

* C giy chng nhn hc tp v kim tra t yu cu v an ton lao ng, ph hp vi cng vic do gim c xc nhn.

* c trang b y cc phng tin bo v c nhn, ph hp iu kin lm vic theo quy nh.

- Khi thi cng trn cao chng ti lun b tr h thng li an ton chng vt liu ri vi.

- Bin php phng chng chy n trn cng trng lun c c bit quan tm.

- Cc thit b an ton v qun o bo h m t trong k hoch an ton s c cung cp trn cng trng trong sut thi gian thi cng, nhng thit b s c s dng mt cch c hiu qu.

- Ton b my mc v thit b thi cng trn cng trng u l cc thit b cn tt, c kim nh cht lng theo nh k.

- C lc lng thng trc bo v, ch dn, iu hnh bn ngoi, bn trong 24/24h. Ch dn cho tng xe, my, con ngi ra vo v tr thi cng v thao tc vn hnh m bo an ton.

- Khi thi cng phi tun th nghim ngt quy trnh, bin php thi cng c duyt, cc hnh ng, thao tc, lm vic trn cng trng phi tun th ng quy phm k thut an ton lao ng trong xy dng, an ton v in, an ton giao thng theo quy nh mi nht ang hin hnh ca Nh nc. in dng trong cng trng ch yu vn hnh my khoan cm tay v thp sng cho cng trng. Dng in rt d gy tai nn nu khng c s hiu bit v in v tnh cn thn ca mi ngi, cho nn trong mi trng hp ngi cng nhn phi tun theo s ch dn ca ngi cn b k thut ch huy an ton v thn trng trong khi s dng in.

- Vic lp t v s dng cc thit b in v li in thi cng tun theo cc iu di dy v theo tiu chun "An ton trong xy dng"

- Bin php an ton in trong thi cng:

m bo an ton v in thi cng trn cng trng cng tc ny phi do mt t chuyn mn v in ph trch, t in ny trc thuc ban ch huy cng trng thng xuyn theo di v kim tra ton b mng li in phc v cho qu trnh thi cng.

* Cng nhn in phi c hun luyn, kim tra v cp giy chng nhn t yu cu k thut an ton in.

* Cng nhn in lm vic khu vc no trn cng trng phi nm vng s cung cp in ca khu vc .

* S dng in trn cng trng phi c s mng in, c cu dao chung, cu dao phn on c th ct in ton b hay tng khu vc cng trng khi cn thit.

* Cc dy dn phc v thi cng tng khu vc cng trng phi l dy bc cch in, cc dy phi c mc trn ct hoc gi chc chn v cao t nht 2,5m i vi mt bng thi cng v 5m i vi ni c xe c i qua. Cc dy di 2,5m k t mt nn hoc sn thao tc phi dng dy cp bc cao su cch in.

* Tt c cc thit b in u phi c bo v ngn mch v qu ti, cc thit b bo v (cu ch, r le, atomt.) u phi chn ph hp vi cp in p v dng in ca thit b hoc nhm thit b c bo v.

* Khi s dng cc thit b cm tay chy in, cng nhn phi c thao tc trn bc thang m phi ng trn gi m bo an ton. i vi nhng dng c ny phi lm gi treo hoc cc phng tin m bo an ton, cng nhn phi i gng tay cch in, ng v giy.

* Ch c cng nhn in, ngi trc tip phn cng mi c sa cha, u hoc ngt cc thit b in ra khi li in, ch c tho m b phn bao che, tho ni cc dy dn vo thit b in, sa cha tho cc dy dn v lm cc vic c lin quan n ng dy ti in trn khi khng c ip p.

* Cm s dng cc n chiu sng c nh lm n cm tay, cc n chiu sng ch lm vic phi t v gc nghing ph hp khng lm chi mt do tia sng.

* Cm s dng ngun in trn cng trng lm hng ro bo v.

- An ton trong cng tc hn, ct:

* My hn c v kn c ni vi ngun in

* Dy ti in n my dng lm bc cao su mm khi ni dy th ni bng phng php hn ri bc cch in ch mi. on dy ti in ni t ngun n my khng di qu 15m.

* Chui km hn c lm bng vt liu cch nhit tt.

* Ch c th in mi c ni in t li in vo my hn hoc tho lp sa cha my hn.

* Th hn c trang b knh hn, giy cch in v cc phng tin c nhn khc.

- An ton cho my mc:

* Cc loi thit b u c kim nh trc khi thi cng.

* Xe my thit b u m bo c h s k thut trong nu r cc thng s k thut, hng dn lp t, vn chuyn, bo qun, s dng v sa cha. C s theo di tnh trng, s giao ca.

* Nim yt ti v tr thit b bng ni quy s dng thit b . Bng ni dung k to, r rng.

* Nhng thit b c dn in ng u c:

+ Bc cch in hoc che kn phn mang in

+ Ni t bo v phn kim loi khng mang in ca xe my.

* Kt cu ca xe my phi m bo:

+ C tn hiu khi my ch lm vic khng bnh thng.

+ Thit b di ng c trang b tn hiu thit b m thanh hoc nh sng.

* Trc khi tin hnh thi cng phi kim tra li ton b h thng an ton ca xe, my, thit b, dn gio v trang thit b phng h lao ng, m bo an ton mi t chc thi cng. Khi thi cng v ban m phi m bo nh sng.

* Th vn hnh my thi cng dng in ti cng trng phi c o to v c kim tra. Khng mc cc bnh tim, phi, thn kinh tai, mt.

* Trong qu trnh thi cng cng trnh ngi s dng cc loi my mc cn c ph bin y cc quy nh v an ton theo lut hin hnh.

* Tuyt i khng ng hoc i li di cc my mc, thit b ang lm vic (nh cu, xung quanh bn knh lm vic ca my xc) quy nh ng i li c th, ro chn ni nguy him.

* Tip xc vi my mc phi c ni quy s dng in v vn hnh my, ngy ma ma bo phi c bin php tng cng chng thm nht l cc cng vic d dang. Mi thit b in phi c dy ni tun th nghim ngt cc quy phm v s dng cc thit b in v an ton cc thit b nng. Nghim thu cc thit b an ton v ch dn an ton trc khi s dng my.

- Trong khu vc ang o t nn c nhiu ngi cng lm vic phi b tr khong cch gia ngi ny v ngi kia m bo an ton. Cm b tr ngi lm vic trn ming h o v trong khi ang c ngi lm vic bn di h o cng mt khong m t c th ri, l xung ngi bn di.

- Cng tc vn chuyn phi i ng tuyn ng quy nh, chp hnh nghim chnh lut l an ton giao thng, chp hnh nghim ch dn ca cnh st giao thng khi lu thng trn ng.

- Ch dn, iu chnh chnh xc nhp nhng, ng b cc cng tc:

- Phi hp, hp ng cht ch vi cc c quan qun l lin quan khu vc, x l tt mi trng hp trn cng trng v trong khu vc m bo hot ng bnh thng v an ton chung trong khu vc.

- Thc hin y cc chnh sch, ch v bo h lao ng: Thi gian lm vic v ngh ngi; ch lao ng n v lao ng cha thnh nin; ch bi dng c hi; ch trang thit b cc phng tin bo h c nhn.

- C bin php ci thin iu kin lao ng cho cong nhn nh gim nh, khu lao ng th cng nng nhc, ngn nga hn ch n mc thp nht cc yu t nguy him c hi gy s c, tai nn nh hng xu n sc khe ca ngi lao ng.

- Thc hin cc quy nh v quy phm k thut an ton v sinh lao ng. Lp s nht k an ton lao ng v thc hin y ch thng k, khai bo, iu tra phn tch nguyn nhn tai nn lao ng ngh nghip.

- Cng nhn lm vic trn cng trng c trang b y cc kin thc v an ton lao ng, ph bin k thut thi cng v c trang b y cc phng tin bo h c nhn.

- Cng tc an ton lao ng c c bit ch trng trong sut thi gian thi cng, s thng xuyn kim tra n c, nhc nh v un nn kp thi nhgn biu hin coi thng v ch quan. i vi cc cng vic trn cao lun c che chn v c li bo v. Cng nhn lm vic c trang b y trang thit b bo h lao ng nh qun o, m, giy bo h.

- Trong cng trng lun c cc loi thuc, bng bng.. s cu khi xy ra tai nn lao ng.

* Cc cng ra vo cng trng phi t bin bo, b tr cc n bo v ti cng v cc gc khu vc thi cng.

* Nghim cm a nm cc vt nng t trn cao xung.

6.2.3. Thnh lp b phn ph trch an ton lao ng:

- Thnh lp b my qun l an ton lao ng, v sinh mi trng v phng chng chy n.

- Cn b kim tra an ton lao ng thng xuyn kim tra, gim st cc vic thc hin cc quy nh an ton lao ng trn cng trng, kim tra cc thit b in. Th vn hnh my mc v thit b phi thng hiu cc tiu chun, quy tc v an ton c lin quan.

- Mi mt t sn xut u c cn b an ton hng dn, kim tra, gim st trong sut qu trnh thi cng, cn b an ton c nhim v:

* n c kim tra ngi trong t chp hnh cc quy nh v an ton v sinh lao ng.

* Tham gia gp vi t trng sn xut v cn b k thut cc bin php an ton lao ng.

* Kin ngh vi t trng hoc cp trn thc hin y ch bo h lao ng v bin php bo m an ton v sinh lao ng.

- Cn b an ton s l ngi c kinh nghim v kh nng gim st theo di vic thc hin cc k hoch m bo an ton v bo v mi trng c Ch u t chp thun.

- Khng tin hnh bt c cng vic no trn cng trng nu cn b an ton cho rng cng vic c th gy ra nguy him. S trao quyn cho cn b an ton v cc cng s quyn quyt nh ngng thi cng v tin hnh ngay lp tc cc hnh ng thch hp m bo an ton cng trng nu c hin tng sai phm i vi k hoch an ton theo cc quy nh ca php lut.

6.3. Bin php m bo v sinh mi trng

Nhng cng trnh c h thng cng trnh k thut h tng i qua s c bin php bo v h thng ny hot ng bnh thng. Ch c php thay i, di chuyn h thng cng trnh k thut h tng sai khi c vn bn ca c quan qun l h thng cng trnh k thut h tng, sau khi c vn bn ca c quan qun l h thng cng trnh ny cho php thay i, di chuyn, cung cp s ch dn cn thit ca ton b h thng v tha thun v bin php tm thi duy tr cc iu kin bnh thng cho sinh hot v sn xut ca dn c trong vng.

* Phng trnh nhim mi trng.

- Nh thu nghim chnh chp hnh cc lut bo v mi trng ca nh nc x hi ch ngha Vit Nam.

- m bo khng c rc ri, t, c thi trn cc vng t cng cng do huy ng thit b thi cng. Chng ti s cung cp cc im ra xe v cc thit b khc ra vo cng trng.

- Nc v cht thi tha s c di chuyn khi cng trng bng h thng tiu nc tm thi n a im thch hp khng lm gy nhim mi trng.

- H thng thot nc tm thi c thit k xy dng v bo dng mt cch hp l trnh vic cht thi trc tip ra mt bng cng trng v khu vc xung quanh.

- Nh thu s b tr cu ra xe m bo cc phng tin lun sch khng gy bi, nhim cho mi trng xung quanh. Ton b mt ng cng trnh s c che bt chng n, chng bi. Cng tc ti nc s c duy tr thng xuyn

- Trong trng hp c rc ri v cht thi c thi ra cng trng v vng t xung quanh, th phi c phng n ph nhanh chng lm sch.

* Bo v cht lng mi trng kh.

- Nh thu s khng s dng cc my mc v thit b s dng nhin liu c th sn sinh ra lng ln kh thi lm nh hng n cht lng mi trng kh v vi phm lut bo v mi trng ca nh nc hin nay.

- Khng tin hnh t rc ri v cc tp cht khc trn cng trng gy nhim khng kh.

- Tin hnh cc bin php nhm gim bt lng bi thi vo khng kh nh sau;

* Nhng din tch c mt xe qua li ln s c lm t v b mt s c lm cng, cc vt liu ri s c lm sch mt cch ti a.

* Cung cp y cc thit b lm gim lng bi trong khng kh, k c cc thit b ti nc.

* Nh thu s ti h thng ng tm v khu vc thi cng t nht 2 ln 1 ngy hoc hn nu cn thit gim lng bi thi vo khng kh.

* Cc li xe v cc nhn vin iu khin thit b my mc tt ng c trong khi khng lm vic hn ch lng kh thi.

* My mc v thit b s c kim tra nh k kp thi pht hin ra cc h hng, sau c bin php sa cha m bo an ton cho con ngi, ti sn v mi trng.

*m bo cc xe ch vt liu che ph hiu qu trnh vt liu ri vi trn ng.

* Tng chn ti cc a im c gi mnh lm bi v rc c th c thi tung trong khng kh.

* Khi vt liu bn c vo xe di chuyn ra khi cng trng th vt liu bn s c che y cn thn.

+ Trong khi thi cng phi m bo mt bng thi cng lun gn gng, sch s, ngn np, c bin php phun to m chng bi trong khi thi cng ph d cng trnh.

+ B tr nhm chuyn lm cng tc v sinh cng nghip v v sinh sinh hot trong v vng ln cn khu vc thi cng.

* Hot ng i vi lng bui xy dng.

- Bt c ti a im no m k s t vn pht hin lng bi trong khng kh vt qu mc quy nh, th nh thu s nhanh chng thi hnh cc bin php pht hin ra ngun bi v t c phng php lm gim lng bi trong khng kh, nu cn thit nh thu s thay i quy trnh lm vic.

* Kim sot v bo v cht lng mi trng nc.

- Chng ti s tun th cc quy nh cng nh lut Vit Nam v vic bo v cht lng mi trng nc.

- Chng ti s m bo rng cc thit b my mc s khng c ra ti cc ngun nc hoc nc ra c thi trc tip xung cc dng nc trong vng.

- Chng ti hng tun s kim tra thit b, my mc trnh c s r r xng du.

- Nc thi trong thi cng v sinh hot s c chy n a im do k s ch nh.

* Kim sot ting n v chn ng

- Tun theo cc quy nh v lut Vit Nam v bo v mi trng c lin quan n ting n v chn ng.

- Vn ting n v chn ng c cp n trong vic thit k v lp k hoch cng nh l bin php thi cng d kin.

- S nhng bin php cn thit trong qu tnh thi cng lm gim ting n v chn ng trnh gy nh hng n c dn v h sinh thi xung quanh.

- Trong qu trnh thi cng ting n v rung ng gy tc dng c hi ti sc khe con ngi, dn ti lm gim nng sut lao ng v lu di s dn n b bnh ngh nghip. V vy lm gim ting n v rung ng trn cng trng xy dng bng cc bin php sau:

* Cc thit b c gii s dng thi cng cng trnh s c lm gim ting n mt cch c hiu qu bng cch s dng cc k thut tin tin ang c sn.

* Cc khu vc thi cng c lm kn hn ch gy ra ting n ln.

* S dng cc lon phng tin thit b c tn sut ting n thp v cc thit b, phng tin s c thng xuyn bo dng c th hot ng tt nht.

* m bo cc thit b, my mc v ng c c nguy c pht ra ting n ln s c trang b cc thit b gim thanh, nu c th.

* Lp k hoch thi cng hp l cc hot ng thi cng c nguy c gy ting n cao khng lm nh hng ln n dn c xung quanh.

* V l do an ton, cc cng nhn thng xuyn tip xc vi ting n s c trang b cc thit b chng n.

- Chng ti s thc thi cc bin php cn thit m bo cc thit b s dng trn cng trng ph hp vi yu cu k thut v hot ng tt, c th gim c ting ng v mi trng.

- Chu trch nhim sa cha tt c cc h hng, thit hi gy ra bi chn ng do hot ng ca thit b, my mc thi cng.

- Chng ti s la chn, s dng v bo dng my mc, thit b v s dng cc bin php thi cng sao cho cng ti a ca chn ng v ting n khng vt qu gii hn cho php.

- Ti giai on thi cng, nh thu s tun th lut php v cc quy nh ca bo v mi trng.

- Cc th nghim nhim v ting n, rung v khng kh phi c tin hnh v thu thp tt c cc thng tin vo bng ghi chp c bin php khc phc.

* Cc hng mc iu tra.

1. Khng kh

2. Nc

3. Ting n

* Phng php cn thit thng xuyn c kim tra.

- Bnh xe ca cc xe vn chuyn trc v sau khi vn chuyn vt liu ph liu.

- ng s s c dn sch ngay sau khi b ri vi vt liu

- Cng tc ti nc s c thc hin ti cc bi vt liu khi cn thit.

- Cht thi c ngun gc t sinh hot v t thi cng d n s c thi ra ng a im v ph hp vi cc quy nh ca lut bo v mi trng.

* Phn tch d liu.

Cng tc phn tch d liu s c tin hnh bi cc chuyn gia c kinh nghim, nhm mc ch kim sot c nh hng ca cng tc thi cng d n ln mi trng. ng thi cng tc ny s gip chng ti sm pht hin cc chiu hng xu tc ng ln mi trng, t kp thi ra cc bin php ph hp vi cng tc bo v mi trng. Cc d liu cn phn tch s nh sau:

- i vi nc:

Ph

SS (Th rn l lng)

- i vi khng kh:

SO2CO

TSP

- Ting n:

Ting n

Chn ng

* Bo co.

Cc s liu s c phn tch da trn kt qu o c ti v tr thi cng v phng th nghim, v thng bo ny s c gi n ban iu hnh cng trnh x l.

* Trc khi kt thc cng trnh nh thu s dn mt bng cng trng gn gng, sch s, chuyn ht cc vt liu tha, d b cc cng trnh tm, sa cha nhng ch h hng ca ng x, va h, cng rnh, h thng cng trnh k thut h tng, nh cng tnh xung quanh. do qu trnh thi cng gy ra theo ng tha thun ban u hoc theo quy nh ca nh nc.

6.4. Bin php phng chng chy n

- Phng chy n l mt tp hp cc bin php v k thut v t chc nhm ngn nga khng cho m chy xy ra, hoc xy ra thi khng cho m chy lan rng. phng chng chy n tt cn phi p dng ng n cc tiu chun v phng chy khi thit k v thi cng cc cng trnh tm trn cng trng cng nh trong qu tnh sn xut v s dng chng. C cc ni quy, cc bin bo cm cn b cng nhn vin trong cng trng bit v cng nhau thc hin phng trnh.

- Ha hon xy ra ti cng trnh ang thi cng do rt nhiu nguyn nhn. Bi vy m bo an ton cho cng trnh, con ngi, my mc thit b thi cng v cc bn th ba, vic phng chy, cha chy phi c quan tm thch ng. Sau y l mt s bin php ch yu:

- n v thi cng s lin h v ngh k hp ng PCCC vi n v PCCC ti a phng.

- T chc qun trit ni dung v ATL, quy nh thng nht v bo him lao ng cho cn b, cng nhn vin khi tham gia thi cng thng xuyn ngoi hin trng.

- Cng tc PCCC c qun trit i vi cn b cng nhn vin, lun tun th mi quy nh v cc bin php PCCC nh khng mang theo cc vt liu d chy n, khng ht thuc, t cc vt liu..

- Thng nht cc bin php, gii php phng v cha chy vi trung tm cha chy, c cc bin php phi hp khi c s c.

- B tr 3 my bm KOREA phc v cu ha.

- Lp 1 t phng chy c 10 thnh vin do mt i ph cng trnh ph trch, t ny phi c hun luyn v thng xuyn din tp kim tra trong bt k tnh hung no cng hon thnh nhim v.

- C cc tiu lnh phng chy, cha chy c treo ti nhng ni cn thit nh kho tng, ln tri v ti cc tng ang thi cng.

- Chun b mt s dng c nh x, mc, thang, bnh bt nhng dng c ny n sn , b tr ti nhng ni tin li d ly, ch c s dng khi din tp v cha chy.

- Lin h kt hp vi cng an PCCC ca thnh ph t chc lp hc ging dy cc bin php phng chng chy n.

- Cc ng dy in khng i qua cc vt d chy, phng chp in.

- Nghim cm cn b cng nhn vin khng c t tin mang cht n, cht chy vo cng trng.

- Nghim cm cng nhn khng c t la, un nu trong cng trnh ang thi cng.

- Khu vc hn phi c dn sch g, giy vn. Hng ngy thu gom cc v bao xi mng, giy, g vn tiu hy theo bin php an ton.

- C tm chn bng vt liu khng chy ngn x hn v kim loi bn ra xung quanh ni hn.

- Qun l cht ch vt liu d chy n. Khng cho bt k ai t mang vt liu d chy n vo khu vc thi cng.

- Khng cc chng ngi vt trn cc ng i chnh c thit k yu cu cho phng ha, m bo xe cu ha ca khu vc vo thun li khi c ha hon xy ra.

- Cc phng tin phng chy cha chy phi ni d thy, c bnh bt v my bm, b nc cu ha d phng. Lp h thng bin cm, bin bo, c phng n v thc tp kim tra ng cu khi c s c.

- Thng xuyn kim tra ng in, cu dao in, cc thit b dng in v ph bin cho cng nhn c thc trong cng vic dng in, dng la phng chy. C b nc, bnh bn v my bm nc phng dp la khi c ha hon xy ra.

- Nghim chnh chp hnh cc quy nh, bin php thi cng hn in v ct hi.

- Khi thi cng ci to, o cc h mng, kim tra xem c c t, kh d n hoc d chy hoc thiu xi khng v vic thng gi trc khi cng nh trong thi gian lm vic.

- Khi tin hnh hn, ct thp phi s dng mi bin php m bo an ton lao ng, tuyt i tun th theo cc quy nh v an ton lao ng khng xy ra chy n. Phi s dng h thng thng gi y v thch hp, cn c ngi gim st, h tr bn ngoi b kim tra an ton cho nhng cng nhn lm vic trong cng trng.

- Thc hin ch bo qun vt t, my, thit b theo ng quy nh v phng chng chy n. H thng in ca cng trng t trm bin th n cc khu vc dng in thng xuyn c kim tra, nu c nghi ng v vn ng dy khng an ton s c sa cha ngay.

- Khi xy ra ha hon, ch huy cng trng gi in bo ngay cho lc lng cha chy, ch huy cn b ph trch in ct cu giao tng, s tn vt t, my, huy ng lc lng cng nhn trn cng trng cu cha.

- Vi phng chm phng hn chng, cn b cng nhn vin ti cng trng thng xuyn ph bin ni quy, tuyn truyn gio dc, kim tra n c, nhc nh tinh thn nng cao cnh gic, tch cc ngn nga v thc hin tt Php lnh PCCC Ban hnh ni quy PCCC cc t i, vn phng, c bin cm khu vc u xng ct pha, trm bin th. Xy dng ni quy an ton v s dng, vn hnh my, thit b. Thng xuyn kim tra cng tc phng chng chy, n ti cng trnh, b tr t bo v cng trng v lc lng ng cu khn cp khi c ha hon.

PHN VII QUY TRNH THI CNG M BO CHT LNG

- Lp tng mt bng thi cng ph d, mt bng thi cng tng khu vc, c hng ro che v chn bi ngn cch khu vc thi cng;

- Bin php m bo an ninh, an ton lao ng, v sinh mi trng v phng chy n theo tiu chun c thuyt minh r rng trong phn bin php thi cng.

- Huy ng thit b ph d ph hp theo tng th loi kt cu:

- Ph d lp mi bng th cng kt hp vi my khoan tay, cc tm mi b tng ct thp ri c thc hin bng cch tch ri tng phn sau my hn ct ty lin kt dng ri cn cu chuyn xung ri mi ph nt.

- Cc v ko thp cng c hn ct ty lin kt dng cn cu chuyn xung hoc bc thng ln t vn chuyn v khu vc kho.

- Vi sn b tng s thc hin ph d bng th cng kt hp vi my khoan cm tay ph sn b tng xung cc sn di ri dng my xc ln t t chuyn v bi thi.

- Vi tng xy phi lm gin gio thc hin ph d bng th cng kt hp vi my khoan tay ph tng xy gch xung sn ri dng mng xung ct mt t dng my xc ln t t chuyn v bi thi.

- i vi cc ct, dm, bng b tng ct thp v kt cu ln nn s dng ba cn kt hp my ph b tng thy lc " Ti cc v tr thch hp", my hn ct phn on ct, dm thnh cc on ngn t 3 n 5 mt c trng lng ph hp vi sc cu xung mt t.

- Cc tng, mng b tng ct thp s dng my xc kt hp vi o th cng o t h mng ri dng ba cn, my ph b tng thu lc, my khoan, my nn, my kh, my hn ct phn tng, mng thnh cc khi c trng lng t 2 n 5 tn sau dng cn cu ra khi v tr mng ang ph.

- Vi cc tng mng ch yu l hc, gch xy dng my xc kt hp vi o th cng o t h mng ri dng my khoan, my nn my xc ph d bc ln t ch v bi thi.

- Tt c cc trang b lm vic ca cc phng ban phn xng no thuc hng mc ph d u c di chuyn v v tr nh lm vic mi ca cc phng ban phn xng . Nhng thit b c hoc h hng phi thu hi s dng li theo n c ph duyt hoc thanh l theo quy nh ca Ch u t. Nh thu cn c bn danh sch cc thit b thu hi khi nhp kho do ch u t qun l v khng oc dng vo cc cng vic khc m khng c Ch u t chp thun.

- Tt c cc vt t nh: tm lp, st thp cc loi...u c thu hi tp kt li ti khu vc do ch u t qun l trong hng ro cng trng lm th tc thanh l theo quy nh. Nh thu khng c dng vo cc cng vic khc m khng c Ch u t chp thun.

- Cng tc p t tr li h mng v lp y khong trng gia cc mng sau khi ph d bng t m cht phi c coi trng nh cc cng trnh mi, v n trc tip nh hng n ln ca nn mng xy dng d n cng trnh sau ny. Khi p t cng phi c tin hnh ng quy trnh, quy phm nh: cng tc thi cng t nu trn. cht cho nn ng v cc vng c t cng trnh bn trn K 0,95.

PHN VIII KT LUNTrn y l cc phng n chun b v bin php thi cng ch yu p dng chung cho tt c cc hng mc, nhm thi cng cng trnh vi cht lng cao nht, an ton nht m bo tin thi cng ra. Khi thi cng, chng ti s thit k bn v k thut thi cng v iu chnh bin php thi cng chi tit, ph hp vi tng hng mc, tng cng tc thi cng v sn sng iu chnh li bin php khi c kin hoc yu cu ca Ch u t.

Nh thu s thit k bn v k thut thi cng cng trnh theo quy trnh, gim st, kim tra cht lng kht kh, tun th cc quy nh hin hnh mi nht ang p dng trn ton lnh th nc Cng ho x hi ch ngha Vit Nam.

Vi nng lc v uy tn hin c, kinh nghim thi cng nhiu cng trnh chuyn ngnh trng im, cng trnh i hi kht khe v k thut v kh nng cung cp thit b nh cng trnh c vn lin doanh quc t, cng trnh c quy m c th tng t hoc cao hn. Chng ti cam kt s m bo thi cng gi thu: Ph d Nh ht Lam Sn Thnh ph Thanh Ha t cht lng cao nht, m bo ng tin thi cng nh nu trn ng thi tun th mi quy nh hin hnh ca nh nc.

Xin gi ti qu Ch u t li cho trn trng v mong mun c c s tin tng, quan tm ca Qu Ch u t.

I DIN NH THU

T 4

T 2

T 3

T 6

T 1

T 5

LC LNG TRC TIP

(BAN CH HUY CNG TRNH)

LC LNG GIN TIP

(BAN IU HNH D N)

PAGE NH THU: CNG TY C PHN XY DNG V PHT TRIN H TNG THNG LONG Trang 38

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