Manufacturers designing steel socket jacking pipe should submit a product performance test report. It should be clear that the application of the flow load is the constant flow method or the appliance flow method. The value of the flow load and the permitted flow value of the method should be measured. The flow load of other appliances will affect the drainage capacity due to different models.
Flow and build high
Pay attention to the height of the building to which the flow is applicable. The higher the load application layer in the steel jack pipe, the greater the negative pressure value in the pipe. The agreed flow value in the standard specification is based on the experimental results of the 16-story experimental tower, and can be applied to the construction of 30 or less floors.
Not connected to other pipes
In order to ensure the spiral flow of the spiral pipe, the steel jack pipe cannot be connected with other risers. Generally, an independent drainage system is used. If a rated drainage pipe is added, it will not play any role.
In addition, the special three-way or four-way pipe fittings for side inlets that are used in conjunction with spiral pipes belong to nut-squeezed rubber ring seal sliding joints. Generally, the distance of telescopic sliding is within the range of temperature difference during normal construction and operation.
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