Fuzhou Drain Pipe - How to Install Cast Iron Drain Pipe

Description :

　　How to install cast iron drain pipe

　　1. The construction of the drainage pipe should be carried out according to the design requirements. The drainage pipe should extend no less than 30mm from the bottom of the structure, and the longitudinal spacing should not exceed 4m.

　　2. For bridges on overpasses, the drainage pipe should not be directly hung under the slab. The drainage pipe can be directly led to the ground through longitudinal and vertical drainage pipes

　　3. Cast iron drain pipe, suitable for paving structures with waterproof layers. The inner diameter of the drainage pipe is generally 0.10-0.15m, and the lower end of the pipe should extend at least 0.15-0.20m below the bottom of the roadway slab to prevent moisture from seeping into the surface of the main beam ribs.

　　The above is a brief introduction to cast iron drainage pipes. Cast iron permeable pipes not only bring great convenience to people's travel, but also provide guarantees for their development. However, cast iron drainage pipes are made of iron, so rust prevention work should be done well in order to last longer.The construction process of the bridge drainage pipe installation device is as follows: the reserved hole mold device for the drainage pipe is installed on the formwork fixed by the prefabricated beam combination; Pouring concrete, taking care of life, dismantling formwork, removing drainage pipes and leaving holes for molds; Preparation of drain pipe: Stretch the water swelling rubber stopper into a strip shape, wrap the strip shape of water swelling rubber stopper around the same thickness as the reserved hole from the upper opening of the drain pipe, and apply anti-corrosion coating to the part below the water swelling rubber stopper around the drain pipe;

　　Fixed drainage pipe installation: Install the drainage pipe wrapped with a rubber sealing strip that swells when encountering water into the reserved hole of the drainage pipe, and ensure that the pipe mouth of the drainage pipe is flush with the beam surface; Manufacturing and irrigation grouting materials: Add the measured water and grouting materials into the mixing ash cylinder and stir evenly, with a water to grouting material ratio of 0.18-0; Inject the manufactured grouting material into the cavity formed by the drainage pipe and the reserved hole of the drainage pipe, with the grouting material lower than the upper opening of the drainage pipe;

　　Applying polysulfide construction sealant: When the strength of the grouting material to be irrigated reaches 22Mpa or above, apply polysulfide construction sealant around the upper opening of the drainage pipe, that is, on top of the grouting material. The construction process of the bridge drainage pipe involves the construction device process of the bridge drainage pipe, which deals with the technical problems of traditional pre embedded drainage pipes. It is changed to pre embedded drainage pipe reserved hole molds, and then the process of installing the drainage pipe is completed through the following process: fixing the pre embedded drainage pipe reserved hole molds; Pouring concrete, removing formwork, and removing reserved hole molds; Prepare a drainage pipe, wrap a rubber stopper around the drainage pipe to prevent swelling when encountering water, apply anti-corrosion coating to the exposed part, and fix the drainage pipe

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