Along with the speeding of town house construction step, not a few areas with small residences set up one after another, many inhabitants move continuously into the new residence, their quality to housing request is more and more high, particularly pay attention to very much to some cracks circumstances which sprinkle building plank to appear now, worry these cracks' aring end will cause insecurity trouble, but in succession to building quality direct the section hurl tell.
Such as once the some city develop a company to set up 6 layers of floor residence 16 totally, constructing area about 100,000 square meters, the brick mixs structure, the beginning repairs, one steps 2 box off with the brick wall, each one's establishing a turn of beam together building plank is togetherwhole to sprinkle, the plank thick 100 mms, concrete mark number is C20, house long about with 80-90 ms, don't establish flexible sew, first floor is the 2.2 m garage layer, the C20 reinforcing bar cage of the foundation adoption infuses to note a stake.It's small area's turn to complete work in October,2003, finishing construction acceptance, didn't discover obvious crack, discover the building plank appears crack when the inhabitant repair, past jointly to quality direct the section hurl tell, through step to see on the spot, 1


隨著城市住宅建設(shè)步伐的加快，不少住宅小區(qū)相繼建成，許多住戶陸續(xù)搬進(jìn)新居，他們對住房的質(zhì)量要求越來越高，尤其對一些現(xiàn)澆樓板出現(xiàn)的裂縫情況非常關(guān)注，擔(dān)心這些裂縫最終會引發(fā)不安全事故，而紛紛向建筑質(zhì)量監(jiān)督部門投訴。
如某市一開發(fā)商共建6層樓住宅16幢，建筑面積約10萬平方米，磚混結(jié)構(gòu)，初裝修，一梯二戶用磚墻分隔，每層設(shè)有圈梁同樓板整澆，板厚100mm，混凝土標(biāo)號為C20，房屋長約80-90m之間，不設(shè)伸縮縫，底層為2.2m車庫層，基礎(chǔ)采用C20鋼筋籠灌注樁。該小區(qū)于2003年10月完工，竣工驗(yàn)收時，未發(fā)現(xiàn)明顯裂縫，在住戶裝修時，發(fā)現(xiàn)樓板有裂縫出現(xiàn)，故聯(lián)名向質(zhì)量監(jiān)督部門投訴，經(jīng)實(shí)地踏看，16幢房屋均存在深淺不一的裂縫。裂縫寬度在0.2mm-0.4mm之間，裂縫位置絕大多數(shù)處在板四角，朝陽處更為明顯。于是，質(zhì)監(jiān)部門組織有關(guān)單位，首先對房屋沉降量和傾斜度進(jìn)行復(fù)查，結(jié)果都在允許范圍內(nèi)，再查看施工圖紙也符