The construction team will first drill holes in the exterior wall! Residents were frightened and asked, "What are you doing?" Xuhui Community's "Beautiful Home"

The long-awaited "Beautiful Home" project has finally arrived, but as soon as the construction team entered the site, it was stopped by the residents.

Recently, residents of Building 2, Tunnel Peak Yude Building, Lane 92, Yude Road, Xuhui District, reported to the Liberation Daily Shangguan News that after preliminary preparation, their construction team officially entered the site in mid September to start the construction of the "Beautiful Home" project. Unexpectedly, residents found that the common scaffolding or hanging baskets used in exterior wall construction were not found. The construction team first drilled deep holes in the exterior wall, and many holes were drilled from bottom to top, leaving the exterior wall "riddled with holes"

One of the reasons why we are looking forward to the Beautiful Home project is that the exterior walls of the building are suffering from severe water seepage. We hope to use the Beautiful Home project to comprehensively repair the exterior walls. "Will drilling holes like this now further damage the exterior walls, exacerbate water seepage problems, and affect the repair results?" The holes on the walls have caused great concern among residents.

Drilling holes is for installing the lifting platform track

On September 19th, the reporter went to the community of Lane 92, Yude Road to learn about the situation. Entering the entrance of the community, there are two high-rise buildings with 24 floors on the right side and two rows of multi story residential buildings on the left side, both built in the 1990s and belonging to a mixed type community with both public and commercial housing. The two high-rise buildings included in the Beautiful Home project this time are Building 1 and Building 2 of the community. The construction nameplate of the tree next to the main road in the community shows that the ongoing "comprehensive renovation" project will include roof repair, public corridor repair, exterior wall repair, and overall outdoor repair of the community.

The residents of the community told reporters that they have been looking forward to the major renovation of the community for a long time. "Up to dozens of households have severe water seepage on their exterior walls, especially on the north side, which can be disastrous when it rains. Every time they report for repairs, the property management sends someone to apply glue, which is useless and can only be repaired through major repairs," said a resident on the 10th floor of Building 2. In addition to severe leakage, problems such as aging of the main pipes in high-rise buildings and flooding of toilets in lower floors have also been troubling residents in high-rise buildings.

Since that's the case, has the Beautiful Home Project started yet? Building 2 on the inner side of the community has been implemented first: the temporary construction room in front of the building has been erected, and a platform for standing construction workers has been hung on the outer wall of the building, stopping at a location about 3 floors away. On the platform, there were no construction workers working, only a few knocking sounds could be heard occasionally. The on-site construction manager explained, "It's just installing platform guardrail pieces."

The picture shows Building 2, Lane 92, Yude Road, where the "Beautiful Home" project is being implemented.

Residents further learned that the construction was temporarily suspended by everyone. A resident showed a video to the reporter, explaining the truth. In the video, a construction worker stands on a platform outside the window, holding an electric drill and drilling a long drill bit into the exterior wall. Based on the estimated length of the drill bit, the hole penetrates into the wall by more than 10 centimeters. This kind of hole runs around the outer wall, from bottom to top.

Screenshots of videos provided by residents. In the video, a construction worker stands on a platform outside the window, holding an electric drill and drilling a long drill bit into the exterior wall.

A triangular pillar device that subsequently appeared on the exterior wall explained the purpose of drilling: deep holes are arranged in groups of four, and two iron rods are fixed at the drilling point by bolts. At the other end of the iron pole, there is a vertical steel structure triangular column being pulled. Wherever the hole is drilled, the triangular prism climbs. On the outer side of the triangular prism, there is a gear shaped up and down track fixed, and a machine can climb up and down along the triangular prism by getting stuck on the track. The reporter counted and found that there are a total of 14 sets of tracks and machines arranged around the building, which are used to drive the construction lifting platform arranged around the building.

The deep holes are arranged in groups of four, and two iron rods are fixed at the drilling site by bolts. At the other end of the iron pole, there is a vertical steel structure triangular column being pulled.

On the outer side of the triangular pillar, there is a gear shaped up and down track fixed, and a machine can be stuck on the track to push the construction platform up and down along the triangular pillar.

"How can our exterior walls withstand such turmoil? Will it exacerbate leakage?" Several residents inside the building were anxious. On September 18th, under the coordination of the neighborhood committee, the construction party temporarily suspended the construction.

Pilot new processes? We need to make good safety notices for the people

At the entrance of Building 2, several residents gathered around the reporter. Some residents claimed that the construction of Building 1 in the community will adopt a hanging basket method, which will not be so porous. After hearing this, everyone began to gossip. Some people are worried and worried that even if the porous material is blocked after construction, it will become a new hidden danger of leakage and cracking in the future; Some people demand a positive response from the construction party, why not use common construction methods such as hanging baskets that cause less damage to the exterior wall; Some people do not agree and instead ask other residents, "Isn't it necessary to drill holes on the exterior wall when installing the air conditioning rack? What's the difference?"

The reporter found Huang Zhuhe, the person in charge of on-site construction. He explained that using an electric lifting platform for external wall construction is a "new technology" that has only been attempted in two residential areas in Pudong before, and this is also the first time it has been piloted in Xuhui District. According to him, compared to suspended baskets for construction, electric lifting platforms are much more stable and have higher safety. At the same time, workers standing on top will apply various materials more evenly, ensuring better construction efficiency and quality.

The use of electric lifting platforms for external wall construction is a new technology that has only been attempted in two residential areas in Pudong before, and this is also the first time it has been piloted in Xuhui District.

So, will drilling so many holes on the exterior wall exacerbate leakage? Huang Zhuhe brought a steel screw inserted into the hole and a chemical bolt used for fixation to demonstrate to the reporter. The workers will first drill a hole 15 centimeters deep on a 24 centimeter thick wall, then inject a chemical adhesive into the hole, and then knock the screw into the hole. After 20 minutes of chemical glue solidification, the screw can provide a tensile force of 5 to 8 tons. After the completion of future construction, the exposed screws will be directly cut off, the wall will be ground flat, and then waterproofing construction will be carried out outside.

The picture shows the steel screws and chemical bolts used by the construction party for fixation.

Huang Zhu further explained that common construction techniques for exterior walls include scaffolding, which also involves drilling holes in the wall to secure steel pipes. Therefore, it is often difficult to avoid drilling holes on the exterior walls during construction. However, compared to traditional expansion screw fixation, after using chemical bolts for fixation, the holes are filled with steel screws and chemical bolts, "leaving no gaps and no potential leakage in the future."

How can these pieces of information inform concerned residents? On site, many residents expressed their hope that the construction party could communicate and exchange ideas with everyone about this "new technology" technical solution, dispel everyone's concerns, and at the same time, make a commitment to the quality of subsequent construction. The Chen Family Residence Committee, where the reporter is affiliated, has learned that the committee is actively preparing to hold a communication meeting. At the same time, it is also requesting the construction party to prepare written materials such as a construction quality commitment letter, to dispel residents' concerns about not being able to find someone to repair water leaks after the construction is completed. "It's not easy to win the opportunity to have a beautiful home, but we still hope to dispel the concerns of residents as soon as possible, resume construction, and allow everyone to enjoy the benefits of comprehensive renovation," said a person in charge of the neighborhood committee.

Some communication work should be done first! Beautiful Home is a practical project promoted by government departments. According to reporters, some communities pay more attention to soliciting opinions from residents on the beautiful home renovation project through systems such as hearings and coordination meetings before implementation, widely listening to people's suggestions, optimizing the renovation plan, resolving conflicts before project implementation, reducing potential obstacles during project implementation, and improving the satisfaction rate of practical projects. Doing good deeds well and doing good deeds in reality, similar practices should be worth promoting and learning from.

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