Data: The overall quality of residential buildings has increased, and the amount of complaints has declined.

The report shows that in 2011, the city quality supervision station investigated and handled 155 complaints of various types of residential quality. There were 104 complaints for visits, calls, and 51 online complaints.

From the comparison of the four years of data from 2008 to 2011, the main indicators reflecting the hardware quality of housing construction have shown a significant decline, indicating that the overall quality of housing construction in Yangzhou has continuously improved. For example, complaints about the quality of cracks in cast-in-place slabs were 15 in 2008, 20 in 2009, 22 in 2010, and 15 in 2011. Last year, there were 6 reductions from the highest level in 2010.

Analysis: Complaints from resettlement houses declined, and details of commodity housing were more important

The quality of demolition and resettlement houses and the construction of affordable housing is a hot spot for many citizens and it is also a top priority of the daily supervision and management of quality supervision agencies. The 2011 Yangzhou Residential Project Quality Report showed that the resettlement housing construction has received the attention of all parties, the proportion of complaints has declined, and the overall quality is good. Among the 155 quality complaints, only 37 cases belonged to the nature of resettlement houses, accounting for 23.9% of the total complaints, a decrease of nearly 10 percentage points from the 33% of the same period in 2010, showing that after a period of time, the centralized renovation, resettlement housing The overall quality has risen significantly.

In contrast, complaints for commercial housing in 2011 showed new features: Households pay more attention to details. This is mainly because the public’s sense of quality has been significantly enhanced, and the demand for housing quality has increased significantly. Citizens pay attention not only to quality but also to details. Such as wall plaster layer mortar strength enough, the corner is not right angles, whether the formation of wall tiles. This requires real estate developers to pay attention to improving the quality, but also pay attention to all aspects of detail.

Complaint: Half of the leaks for the house are still technical problems

In 155 complaints of various types of residential quality, complaints involving quality defects such as 'empty, cracked, and leaked' have increased by 22% compared with 2010. Among them, 79 cases involved house and basement leakage, accounting for 51% of the volume of complaints.

Judging from the situation in recent years, leakage of houses has always been a hot spot for complaints and a difficult issue to deal with. The data shows that in 2008, there were 14 leakage complaints received, 22 in 2009, 31 in 2010, and 79 in 2011. The overall number of leakage complaints showed an increasing trend, especially the external walls (including external windows). The leakage problem is more prominent.

Why is there such a high level of complaints about house leakage? Experts at the quality supervision station told the reporter that there are two main reasons for this. On the one hand, last year's continuous and prolonged rainy weather caused many leaks in the previously leak-free houses. This is an objective reason. On the other hand, the problem of leakage is a common problem in the quality of construction projects. Although construction units and research institutes are trying to overcome this problem, some anti-leakage technologies are still not mature so far, and the durability of some waterproof products is still insufficient. There are still imperfections in its construction techniques and practices, and it is easy to gradually weaken or even lose its protective effect over time, resulting in leakage.

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Technical data sheet of polypropylene geotextile

Technical data sheet of polyester geotextile

Gram weight	Thickness(mm)	Breaking strength(kn/m)	CBR burst strength(KN)	Elongation at break(%	Tear Strength(KN)	Sieve size O99(O35)mm
100	0.9	2.5	0.3	25-100	0.08	0.07-2.0
150	1.3	4.5	0.6	25-100	0.12	0.07-2.0
200	1.7	6.5	0.9	25-100	0.16	0.07-2.0
250	2.1	8	1.2	25-100	0.2	0.07-2.0
300	2.4	9.5	1.5	25-100	0.24	0.07-2.0
350	2.7	11	1.8	25-100	0.28	0.07-2.0
400	3	12.5	2.1	25-100	0.33	0.07-2.0
450	3.3	14	2.4	25-100	0.38	0.07-2.0
500	3.6	16	2.7	25-100	0.42	0.07-2.0
600	4.1	19	3.2	25-100	0.46	0.07-2.0
800	5	25	4	25-100	0.6	0.07-2.0

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