06/01/2014 SN NH MI IU CN BIT KHI XY DNG NH (P.4)

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

SN SNG PHC V QU KHCH

Sn nh b tng ct thp (p.4):

Sn b tng ct thp nn buc tt nn buc tt c cc nt, nht l hai hng nt st bin.

Mt sn b tng ct thp lt bng gch men, gch gm, gch xi mng, tm granit,nhng lt bng gchnung th t b hin tng nm (ng sng). Mt sn cng c th lng bng va xi mng ct mac 50,tri thm r v n gin).

B tn sn khu ph (bp, x, tm) dng mac 200 v cn khng ch t nc v xi mng.Thng dng gchmen c sn hoc gch chng trn, va mac 75 lt sn khu ph. Khi lt sn nhkhu ph cn dc vpha rnh hoc l thot nc. Cn nh rng sn nh khu ph cn thp hn cc phng, hnh lang, bancng, v phi dc 2% thu nc. Phng tm nn lt bng gch c cht lng cao, chng trn trtv nn c hoa vn trnh nhm chn. Nu lt khu ph th dng va xi mng ct mac 75 v c thmph gia chng thm cng tt.

06/01/2014 SN NH MI IU CN BIT KHI XY DNG NH (P.4)

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Theo lut xy dng, sn ban cng khng rng qu 1,4m trnh lt, gy, vng, sn ban cngchu lcphc tp nn cn phi ch nht l t ct thp. Vi ban cng rng di 0,8m th c th khng cn dm,khi t ct thp chu lc (theo chiu rng) pha trn.

Khi ban cng 3 bn c dm (ch bn ngoi khng c dm) th vng bn ngoi b un pha di, khi ttnht (an ton nht) l t hai lp ct thp trn v di (theo chiu rng vn l ct thp chu lc). Khi bnbn u c dm th vng gia b un pha di (nh sn nh m xung quanh u c dm). B tng bancng thp hn mt phng trong v dc ra bn ngoi lt bng gch khng c hoa vn (khng nn lt bngg) hoc lng va xi mng ct mac 75.