Housing quality acceptance standard

2022-07-22
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Housing quality acceptance standard I: entrance inspection 1 Inspection standard (2) the corner cutting and joint of the door shall be tight and flat; (3) The gap between the door and the wall should be fully filled; (4) Allowable deviation of door fabrication: the allowable deviation of door frame warpage is 3mm, the allowable deviation of door leaf warpage is 2mm, the allowable deviation of surface flatness of door leaf is 2mm, and the allowable deviation of diagonal length of door frame and door leaf is 3mm; (5) Installation seam limit and allowable deviation: door

housing quality acceptance standard I: entrance inspection

1 Inspection standard

(2) the corner cutting and joint of the door should be tight and flat

(3) the gap between the door and the wall should be fully filled

(4) allowable deviation of door manufacturing: the allowable deviation of door frame warpage is 3mm, the allowable deviation of door leaf warpage is 2mm, the allowable deviation of surface flatness of door leaf is 2mm, and the allowable deviation of diagonal length of door frame and door leaf is 3mm

(5) the seam limit and allowable deviation of installation: the width of the door leaf butt joint, the vertical seam between the door leaf and the door frame is 1.5 ~ 2.5mm

(6) the width of the gap between the door of the blank room and the ground should not be less than 3.5cm

2. How does the owner check whether the entrance door meets the housing quality acceptance standard?

generally, the owner should check the following aspects of the entrance door:

(1) door frame inspection: whether the door frame is installed firmly and smoothly, whether the connection between the door frame and the wall is tight, and whether the surface of the door frame has abnormal burrs, cracks, damages, etc

(2) door leaf inspection: whether the door leaf is deformed and cracked, whether the finish coat is intact, whether the surface is flat, whether there are obvious scratches, bumps, and whether the floor decoration method is considered to be reserved from the ground

(3) door lock inspection: whether the door lock is firmly installed, whether the key is inserted and pulled smoothly, whether the lock cylinder rotates freely, whether the latch in all directions retracts, and whether the position of the lock hole is normal

(4) opening inspection: whether the door opens and closes smoothly, whether there is abnormal resistance, wear, and whether there is shaking after locking

(5) door handle inspection: whether the installation is firm, whether there is abnormal resistance during rotation, and whether the surface is damaged or deformed

(6) sealing inspection: whether the door leaf seam is within 2.5mm

generally, the owners pay more attention to the appearance quality of the door, such as slight scratches and bruises on the door surface, serious panel cracks, deep scratches, etc., which may be caused by the damage to the door during the construction process. The damage of small problems can be repaired through on-site repair and paint repair, and the door can be reversed for repair in case of serious damage; When the width of the seam between the door and the ground does not meet the requirements (less than 3.5cm), you can ask for the reverse factory sawing treatment (Note: the determination of the return to factory maintenance and sawing treatment is generally decided by the property site to persuade the owner. Generally, the owner is not allowed to decide casually, but can be judged and decided by the real estate engineering department); The problem of the door lock usually occurs during the decoration and use. It is found that the key can be used universally and the lock cannot be opened. After on-site confirmation, the quality problem can be replaced

house quality acceptance standard II: inspection of aluminum alloy doors and windows

1 Inspection standard

(1) quality of aluminum alloy doors and windows: the surface should be clean, flat, smooth, consistent in color, and free of rust; The large surface should be free of scratches and bruises

(2) allowable deviation for the installation of aluminum alloy doors and windows: the allowable deviation of the perpendicularity of the front and side of the door and window frame is 2.5mm, the horizontal allowable deviation of the door and window transom is 2mm, the allowable deviation of the elevation of the door and window transom is 5mm, and the allowable deviation of the vertical deviation of the door and window from the center is 5mm

(3) the gap between the aluminum alloy door and window frame and the wall should be fully filled and sealed with sealant. The sealant surface shall be smooth, straight and free of cracks

(4) the rubber sealing strip of the aluminum alloy door and window leaf should be installed well, and should not fall off the groove, and the drainage hole should be unobstructed

(5) the switch stress of aluminum alloy doors and windows push-pull sash shall not be greater than 100N

(6) installation quality of aluminum alloy door and window glass: the glass surface should be clean without putty, sealant, paint and other stains, the inner and outer surfaces of insulating glass should be clean, and there should be no dust and water vapor in the insulating layer of glass

2. The owner shall inspect the following aspects of aluminum alloy:

(1) window frame inspection: the window frame is installed firmly and correctly, and whether the window frame has scratches, bumps, deformation, etc

(2) profile inspection: the surface layer requires uniform color and gloss, smooth feel, and whether there are scratches, bumps, deformation, etc

(3) hardware and opening inspection: the switch shall be free and stable, the push and pull shall be free, the track parts shall be installed firmly, and there shall be no air leakage after closing the window

(4) sealing inspection: whether the sealing strips of window sash and window frame, window sash and glass are in place and tight, whether there are problems such as damage and discontinuity, whether the sealing strips between window frame and wall are complete, whether there are problems such as falling off, damage, cracks, and whether there are leaks

(5) glass inspection: the installation is firm, complete, and free of cracks and obvious scratches

the damage of aluminum alloy window frame profile needs to be determined on site. If there are small scratches, bumps and deformations (which do not affect the use function), it can be repaired on site. If there are serious deformations that affect the use function, it can be replaced if it is determined that it cannot be repaired. In addition, the owner is more concerned about the problem of water seepage of aluminum windows, and the windows found to be water seepage must be rectified

house quality acceptance standard III: balcony handrail and window guardrail inspection

inspection standard:

1 Quality of finished guardrail: the surface of guardrail should be smooth without rust, consistent color, cracks, warpage and damage, and the joints should be tight

2. Allowable deviation of guardrail installation: the allowable deviation of guardrail perpendicularity is 3mm, and the allowable deviation of guardrail spacing is 3mm. The guardrail installation must be firm and upright

3. The net height of balcony railings in low-rise and multi-storey residential buildings shall not be less than 1.05M, the net height of balcony railings in medium and high-rise and high-rise residential buildings shall not be less than 1.10M, and the net distance between vertical bars of railings shall not be greater than 0.11M

general owners pay more attention to the surface quality and installation of guardrails. Most of the problems reflected are rust and improper installation of guardrails. Such problems can be rectified. In order to improve work efficiency, it is recommended that the construction unit provide part of the paint for the property to prepare, and the property maintenance personnel carry out simple paint repair work. In case of difficult rectification, they should timely notify the real estate engineering department to arrange treatment

housing quality acceptance standard IV: ground inspection

1 Ground inspection standard

(1) the ground is firmly combined with the next floor, and there is no hollowing (considering the actual level of Chinese construction enterprises, when the hollowing area is greater than 400 square centimeters, there is no crack, and there are no more than 2 places in each natural or standard room, it can not be included in the construction quality defect of hollowing)

(2) the ground surface shall be dense and free of quality defects such as sanding, honeycomb and cracks

(3) allowable deviation of ground surface: the allowable deviation of surface flatness is 5mm, the allowable deviation of elevation is plus or minus 8mm, and the allowable deviation of thickness is not more than 1/10 of the design thickness

(4) no leakage is allowed at the riser, casing and floor drain on the ground with waterproof requirements, and the slope direction should be correct without ponding

2. The owner shall check the following aspects of the ground

(1) whether the ground has quality defects such as hollowing, cracks, peeling, pitting, sanding, etc

(2) whether there is backflow and ponding on the ground

(3) whether the embedded pipelines of ground plumbing are marked

(4) whether the floor is reserved for decoration

housing quality acceptance standard V: wall inspection

1 Wall inspection standard

(1) the plastered surface of the wall is smooth, clean and flat

(2) the plastering layer on the wall must be firmly bonded with the base course, the plastering layer should be free of delamination and hollowing, the surface layer should be free of ash explosion and cracks, and the external wall should not have water seepage

(3) where there are drainage requirements, drip lines (grooves) should be made, and the drip lines should be neat and straight, high inside and low outside

(4) allowable deviation of wall plastering: the allowable deviation of facade perpendicularity is 4mm, the allowable deviation of surface flatness is 4mm, and the internal and external corners should be square, with the allowable deviation of 4mm

general owners pay more attention to the wall quality, which is the problem of plastering hollowing and wall cracks. In the actual inspection, the allowable range of hollowing on the wall is: if the wall on one side is less than 5 square meters, one hollowing is allowed, and the hollowing area is not more than 5 square centimeters; If one side wall is larger than 5 square meters, 2 hollows are allowed at most, and the area of each hollowing is not more than 5 square centimeters; Wall cracks are mainly caused by temperature and materials. The wall composed of different materials has cracks due to the different expansion coefficient of materials and the influence of temperature

2. General crack inspection focus

wall cracks and floor cracks are the focus of attention when the owner closes the building and must be taken seriously. The key points of general crack inspection are as follows:

(1) check whether there are cracks (hidden dangers of water leakage) on the exterior wall of the house

(2) whether the bearing wall has cracks, whether the cracks run through the whole wall and penetrate to the back, and whether there are inclined cracks (there are structural safety hazards)

(3) whether there are through cracks in the bearing wall and there are directional and regular cracks in the same position of the walls of different floors (there are structural safety hazards)

(4) check whether the floor slab (ground and roof) has through cracks (cracks parallel to the house beam). According to article 8.1.1 of the code for acceptance of construction quality of concrete structures, the crack width is a general defect within the allowable range (0.3mm) of the current design specification, which does not affect the bearing capacity of the cast-in-place slab

(5) check whether the floor slab (ground and top slab) has stress cracks, which usually occurs on the slab surface at the support or at the bottom of the middle of the slab. Such cracks are generally expressed as cracks 45 degrees from the corner of the wall, cracks perpendicular to the beam, etc. such cracks are often not penetrating, and the shape is wide outside and narrow inside. It should be said that such cracks often have an impact on structural safety and durability, which need to be taken seriously

(6) whether the cantilevered structural plates such as balconies and awnings have through cracks (potential structural safety hazards)

housing quality acceptance standard VI: Waterproof inspection

inspection standard:

(1) the surface of the waterproof layer should be flat, free of bubbles, wrinkles and other defects, the rigid waterproof layer should be free of crisp, cracking, sanding and other defects, and the drainage slope of the waterproof layer should meet the design requirements, without obvious ponding

(2) the detailed structure meets the specified requirements, and the seal is tight without leakage

the waterproof quality of the house is a quality problem of great concern to the owner. The waterproof inspection mainly includes the waterproof inspection of toilets, balconies, kitchens, roofs, external walls, external wall doors and windows, and air conditioning openings. Among them, the owners of toilets, balconies, kitchens and roofs will require 24-hour closed water test for inspection when closing the building. If leakage occurs during the inspection, rectification must be required, and water test inspection must be carried out again until no leakage occurs

house quality acceptance standard 7: water supply and drainage inspection

in addition to reserved pipes, the blank house hardly explains the water supply and drainage facilities, and does not install toilet appliances. The owner focuses on the following contents:

(1) inspection of existing valves and taps: whether the position is reasonable, whether the opening and closing are normal, whether the waterway is smooth, and whether there is no damage, rust, sliding buckle failure and dripping

(2) whether the pipeline is firmly fixed, whether the installation is straight and tidy, whether the pipeline is damaged, and whether the joint is intact

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