Sàn Nhà – Mọi Điều Cần Biết Khi Xây Dựng Nhà (p2)

06/01/2014 SN NH MI IU CN BIT KHI XY DNG NH (P.2)

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SN NH MI IU CN BIT KHI XY DNG NH(P.2)

SN SNG PHC V QU KHCH

Sn nh

Sn nh b tng ct thp:

Sn nh b tng ct thp, c th gc ln dm b tng ct thp, dm gc ln tng v ct, hoc dm chgc ln tng.

Bn phng b tng ct thp tn ct thp, tn b tng hn bn sn b tng ct thp.

Ngi ta thng ln ngc bn sn b tng ct thp (cho dm ln trn) phng pha di, do khng phi lm thm trn pha di v tn dng cc hc pha trn lm cch m.

Thng thng ngi ta hay ly chiu dy ca b tng ct thp ti ch l 60 80mm, sn mi v snkhu ph l 50 70mm. Khng nn lm sn dy qu, v s tng khi lng b tng ng k nhng mngqu th sn nh s b rung khi i li. Chiu dy sn ch yu ph thuc loi sn, chiu rng ca sn. Khi ccdm ph t gn nhau (cch nhau 300 700m) th c bn dy sn ch cn dy 30 50mm. Lp btng bo v ct thp dy 10mm (nh vng bin th lp b tng bo v ct thp dy 12mm).

T vn khi trn v bo dng b tng:

+ Lu khi trn b tng sn nh:

- dm, ct vng v nc phi sch.

- ong vt liu chnh xc cho tng m trn.

06/01/2014 SN NH MI IU CN BIT KHI XY DNG NH (P.2)

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- vt liu vo thng trn, trn kh sau cho nc vo t t n khi t do cn thit.

- Khi s dng ph gia nht thit phi theo hng dn ca nh sn xut ph gia.

- Thi gian trn 1 m chng 2-3 pht.

Ch : Khi trn th cng phi cho thm 15-20% xi mng so vi trn my.

+ b tng:

- b tng theo tng lp v m k mi lp.

- S dng my m m bo cht lng ca b tng.

- B tng phi lin tc.

- Che ph b mt b tng mi khi tri ma.

+ Bo dng b tng:

- Bo dng nhm ngn nga b tng mt nc trong qu trnh ng rn. Bt u bo dng khi b tngse mt.

- Trong thi gian u cn che ph hoc phun m trnh b tng b trng mt.

- Khng ti nc trc tip ln b mt b tng mi .

- Ti nc lin tc trong 7 ngy, gi b mt b tng m c ban ngy v ban m.

- Nc bo dng l nc sch.

- nh hng ca nhit mi trng ti cng b tng: v ma ng nhit thp do vy tc phttrin cng chm hn ma h. c bit khi nhit mi trng di 10c th tc pht trin cng ch bng so vi 30c.