Ganzhou observation standard L-shaped settlement observation standard straight settlement observation point

Description :

　　If the building is uniformly raised, it should be observed at least once when the load is increased by 25%, 50%, 75%, and 100%. If the construction process is temporarily suspended, observation should be conducted once during the suspension and once again during the resumption of work. If there is a sudden increase or decrease in ground load near the foundation, a large amount of water collection around the foundation, or prolonged continuous rainfall, the number of observations should be increased in a timely manner. When a building suddenly experiences significant settlement, uneven settlement, or severe cracks, continuous observations should be conducted immediately on a daily or daily basis. If the settlement is still unstable after the completion of the building, observation should continue during the use phase. Judgment of settlement stability: In general observation engineering, if the settlement velocity is less than 0.01~0.04 mm/day, it can be considered as entering the settlement stability stage.

　　From 2019 to 2022, the trend comparison of strip steel inventory in the past three years shows that the increase and consumption trend of strip steel inventory remained basically consistent throughout the year. Starting from early January 2022, the national inventory level was lower than previous years. From the perspective of market merchants' confidence in national environmental control this year, their expectations for steel strip inventory are also optimistic, and they all believe that the inventory level will not be too high. In fact, from the graph, it can also be seen that taking the national sample inventory data as an example, the value is around 1.7 million tons, and the value is between 300000 and 400000 tons. Since last month, there has been a slight accumulation of inventory, with only ten days left until the Spring Festival. Judging from the timing and steel plant operation, the possibility of inventory exceeding 1.6 million tons is unlikely. Steel prices have slightly rebounded. In the first quarter, steel prices showed a trend of first decreasing and then increasing, with an average steel price index of 107.73 points, a year-on-year decrease of 6.2%, comparable to the price level at the end of 2018. As of the end of March, the steel price index was 109.69 points, a year-on-year increase of 0.8% and a year-on-year increase of 2.4% compared to the beginning of the year. Among them, the long steel price index was 115.45 points, an increase of 1.9% compared to the beginning of the year, and the sheet metal price index was 106.31 points, an increase of 3.3% compared to the beginning of the year.

　　The observation period for general buildings can start after the foundation is completed or the basement is built, while for large and high-rise buildings, observation can start after the foundation cushion or foundation bottom is completed. The number of observations and interval time should depend on the foundation and loading conditions. Civil buildings can be observed once every 1-5 floors of height increase; Industrial buildings can be observed separately according to different construction stages, such as backfilling foundation pits, installing columns and roof trusses, masonry walls, equipment installation, etc. If the building is uniform, it should be observed at least once when the load is increased by 25%, 50%, and 75%. If the construction process is temporarily suspended, observation should be conducted once during the suspension and once again during the resumption of work. If there is a sudden increase or decrease in ground load near the foundation, a large amount of water collection around the foundation, or prolonged continuous rainfall, the number of observations should be increased in a timely manner. When a building suddenly experiences significant settlement, uneven settlement, or severe cracks, continuous observations should be conducted immediately on a daily or daily basis. If the settlement is still unstable after the completion of the building, observation should continue during the use phase. Judgment of settlement stability: In general observation projects, if the settlement rate is less than 0.01-0.04mm/day, it can be considered that the settlement stability stage has been entered.

AfterSalesService :

• Ganzhou Observation Standard