In principle, the construction period of the main concrete structure shall not be less than 6 days per layer!
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Housing and Urban-Rural Development Bureau: In principle, the construction period of the main concrete structure shall not be less than 6 days per layer! Recently, the XX Municipal Housing and Urban-Rural Development Bureau issued a notice on further strengthening the quality management of concrete in construction projects. The notice clearly stated: In principle, the construction period of the main concrete structure shall not be less than 6 days per layer. If it is less than or equal to 5 days per layer, it must be approved by experts. It is strictly prohibited to be less than 4 days per layer.
Is this a discussion paper or has it been distributed?
The Guomao Tower, China's tallest building in the 1980s, once built one floor in three days, earning the reputation of "Shenzhen Speed".
The on-site concrete chimney is also a layer of formwork that takes three days to slide.