Before we move into a new house, we must remember to do a good job of inspection in advance. This is because some of the houses built by developers today may have various loopholes and hidden dangers, and only through careful inspection can we ensure that we will not encounter many problems after moving in. When you inspect the house, you must carefully inspect the sewer pipe, especially a crucial device on the sewer pipe. Many people are not familiar with this device, but it has an important role that cannot be ignored. If the sewer pipe is installed with it, then in a critical moment, it can effectively protect our lives, so it must not be ignored and must be installed.
One: the role of the fire arrester ring
This small device is a fire barrier that needs to be installed on the top of the sewer pipe according to building codes. It is composed of an external metal shell and an internal filled flame retardant intumescent core material, which has extremely strong fire resistance and flame retardant performance, and its role cannot be underestimated.
First, in the event of a fire, the core material will expand rapidly after being heated, and the strong expansion force can squeeze the UPVC pipe, sealing the pipe penetration in a very short time, thus effectively preventing the fire from spreading along the hole. This not only prevents the fire from spreading indiscriminately on this level, but also prevents the fire from jumping up to other floors, greatly reducing the speed and scope of the fire, and buying valuable time for evacuation and fire fighting.
Second, in the event of a fire, even if the sewer pipe is attacked by fire, with the protection of the fire ring, the sewer pipe will not be completely burned out, and usually about 8 cm in length remains. This means that after the fire, new pipes can be connected to continue to be used on this basis, reducing the property damage caused by the fire and the difficulty of subsequent repairs.
It is precisely because the fire ring has such an important role that our country has clear regulations that the fire ring device must be installed on the seventh floor and above. However, there are some problems in reality. Although some developers have installed fire arresting rings, the installation methods are not standardized, and they do not fit closely to the top surface of the floor slab, resulting in the fire arresting rings may fall off at any time. In this way, in the event of a fire, it will not be able to play its due protective role, and there is a great safety hazard. Therefore, the installation of the fire arrester ring must strictly meet the product requirements, and the installation should be tightly attached to the bottom surface of the floor slab or wall, and should be firmly fixed with expansion bolts. During the home inspection, special attention must be paid to this point to ensure that the installation of the fire barrier ring is correct and effectively ensure the safety of the residence.
2: Where should the acceptance specification of the fire arresting ring be set?
1. The diameter of the main pipe of the exposed pipeline is greater than or equal to 11Omm in the floor penetrating part
When the diameter of the main pipe of the exposed pipe reaches or exceeds 11Omm, a fire barrier ring must be installed at the part where it passes through the floor slab. This is because larger pipe diameters are more likely to be a conduit for fire propagation in a fire, where the fire ring can effectively prevent the fire from spreading through the gap between the pipe and the floor slab.
2. The horizontal branch pipe of the exposed pipe and the hidden pipe are connected through the wall part
It is also necessary to set up a fire barrier ring at the part where the horizontal branch pipe of the exposed pipe is connected to the concealed pipe and penetrates the wall. This location is also a weak link where the fire can spread, and the setting of the fire ring can prevent the fire from spreading from one piping system to another, ensuring the fire safety of the entire building.
3. When the horizontal pipe crosses the partition wall of the fireproof partition, the pipeline passes through both sides of the wall
When the transverse pipe needs to pass through the fireproof partition partition wall, fire arrest rings should be set on both sides of the pipe crossing the wall. The fireproof partition wall is an important barrier to prevent the spread of fire in different areas, and the pipe crossing the wall is an easily neglected fire propagation pathway, and the setting of the fire barrier ring can ensure the integrity of the fireproof partition and effectively prevent the fire from crossing the fireproof partition through the pipeline.
4. The ventilation pipe of the drainage pipe passes through the roof of the master or the roof of the evacuee in the event of a fire, at the bottom of the roof panel
In the case of the ventilation pipe of the drainage pipe, if it passes through the roof of the upper person or the roof used as an evacuee in the event of a fire, then a fire barrier must also be installed at the bottom of the roof panel. This is to prevent the fire from spreading to the roof through the snorkel and ensure the safety of the roof, and also to avoid the threat of fire to the evacuated personnel through the snorkel during the evacuation process.
Three: the key points of home inspection
1. Check the entrance door
When you arrive at the house, the first thing that catches your eye is the entrance door. We need to carefully observe whether there are scratches and paint on the surface of the entrance door, and then try to open the door to check whether the door can be opened smoothly and whether the opening and closing process is smooth. After entering the door, it is necessary to check whether the lock is installed firmly, whether there are scratches on the door surface, whether there is an abnormal sound when opening and closing the door, and whether there will be friction. If there is a cat's eye, also check whether the cat's eye can be used normally to ensure the safety and convenience of the entrance door.
2. Check the windows
After entering the new house, all the windows in the room should be opened, and the windows should be checked to open and close smoothly and whether the screws of the windows are loose. If the screws are found to be loose, they should be tightened with a screwdriver in time to ensure the stability and tightness of the window. If the problem is serious, such as the window is deformed, difficult to open and close, etc., you can communicate with the property for repair. (The quality of windows in many communities may not be satisfactory when handing over the house, and the owner can consider replacing the new windows during the renovation according to the actual situation)
3. Check the wall
Wall inspection is one of the important aspects of home inspection. Prepare a slightly longer hammer and marker in advance, and gently tap the wall with the small hammer to determine whether the wall is hollow through the sound. If you find that there is a hollow drum problem, you can use a marker pen to mark it, so that the developer can be asked to rectify it later. The hollow wall will not only affect the aesthetics of the house, but also may cause problems such as cracks in the subsequent decoration and use process, affecting the structural safety and service life of the house.
4. Check the water supply
Open the sluice gate and test whether the water is coming out normally, whether the water pressure meets the requirements, whether there is water seepage in the pipeline, and whether the floor drain is smooth and not blocked. Checking the proper functioning of the water supply system is the key to ensuring the use of water in daily life. If water supply problems are found, such as small water flow and pipe leakage, the developer should be notified in time for maintenance to ensure the convenience and safety of water use after moving in.
5. Check the strong current
New houses are equipped with a power main switch, after closing the power switch, check whether the light bulbs in each room are on normally. In addition, you can also use tools such as electric pens and multimeters to measure whether the power panel box has electricity. In addition, there is a relatively simple way, that is, prepare a charger with an indicator light, plug it directly into the power panel box, and judge whether there is electricity by observing whether the indicator light is on. The normal operation of the strong current system is related to the safety of various electrical equipment in the home, and must be carefully checked to ensure that there are no potential safety hazards such as leakage and short circuit.
6. Check the weak current box
Open the weak current box and check whether the weak current lines are complete, such as telephone lines, network cables, cable TV lines, etc. Although it may not be possible to conduct a full and detailed inspection of the weak current system during the home inspection, it is possible to initially check whether the wiring is in place. After purchasing equipment such as routers and TVs, more in-depth and detailed inspections are carried out to ensure that the weak current system can meet the needs of daily life and work.
7. Check the waterproofing of the toilet and kitchen balcony
During the house inspection, you can make an appointment with the upstairs and downstairs neighbors to do a closed water test. It is necessary to prepare a small basin of water, first block the floor drain in the toilet, kitchen, south balcony and other locations with plastic, and then release the water, the water depth is generally 2-3 cm. After a day, check whether there is any water seepage in the corresponding position downstairs, and also check whether there are any traces of leakage on the floor and walls of your home. Waterproofing project is an important part of house decoration, if the waterproof problem is found during the house inspection, the developer should be asked to rectify it in time to avoid inconvenience and loss to life due to leakage problems after moving in.
8. Check whether the ground and wall are level
To check whether the floor and walls are level, you need to prepare a spirit level. The flatness of floors and walls can be accurately measured by means of spirit levels. An uneven floor may affect the placement and use of furniture, while an uneven wall may affect the decoration effect and aesthetics. If it is found that there is a large horizontal deviation on the ground or wall, it should be solved by communicating with the developer in time to ensure that the quality of the house meets the standards.
After the inspection, don't forget to close the sluice gates and electrical switches to ensure safety. Remind all friends that when you conduct a home inspection, you must carefully check whether the sewer pipe is equipped with a fire arresting ring, which is a key device. It can protect our lives at critical moments and is an important embodiment of responsibility for the safety of our families.
In family life, we must have a strong sense of safety, always pay attention to various safety details, and avoid some dangerous situations that cause harm to family members. Only in this way will we be able to live with peace of mind in our new home and enjoy a good time in our new home. What do you pay special attention to during your home inspection? Is it the structural safety of the house, or the proper functioning of the water and electricity facilities? Everyone is welcome to share their experience and experience in home inspection, and work together to create a safe and comfortable home.
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