How to install cement pipe billboard in Horizon 4
Based on the "Uniform Standards for Construction Quality Acceptance of Construction Projects" GB50300-2001 and "Construction Quality Acceptance Standards for Building Water Supply, Drainage and Heating Projects" GB50242- 2002
1. Construction stakeout: Use a total station to release the pipeline and a level to measure the elevation.
2. Pipe section transportation and loading and unloading: The quality indicators of pipe sections to be transported should meet the design and specification requirements. They should be transported to the site by car and loaded and unloaded by crane. During loading, unloading and transportation, care should be taken to pre vent pipe sections from rolling and colliding with each other, causing damage. Pay attention to personal safety.
3. Foundation pit excavation and treatment: According to the released excavation line and excavation depth, use an excavator to excavate to 0.2m above the design height of the foundation, and use manual clearing to the design elevation. Subsequently, the bearing capacity of the base is tested. If the bearing capacity is insufficient, sand and gravel are used to replace the filling. The depth of treatment is determined by the results of the cone stress test, and the width is the width of the base plus 0.5m on each side. The replacement sand and gravel need to be filled in layers and compacted in layers.
4. Concrete pouring in the lower part of the foundation:
After the bearing capacity of the base foundation reaches the requirements, the foundation concrete can be poured. When pouring the foundation concrete, the surface should not be darkened to facilitate the combination with the concrete inside the pipe body.
5. Installation of cement pipes: Use a crane to unload and place them in place with manual assistance. Pipe joint joints generally use rigid joints, and a deformation joint joint is provided every 10m.
6. Pouring of the upper part of the foundation concrete (concrete wrapped around the pipe body): After the cement pipe is placed and checked, the upper part of the foundation concrete (concrete wrapped around the pipe body) can be poured.
7. Opening construction: construction of entrance and exit end walls, wing walls, and culvert bottom (pavement at the bottom of the culvert outside the end wall). Pay attention to the structural dimensions during construction.
8. Laying and repairing the waterproof layer of the culvert: laying the waterproof layer of the cement pipe according to the design requirements, filling the gaps and building reinforcement works.
9. Backfilling: After the installation is completed, backfilling can be carried out when the strength of the culvert masonry mortar or concrete reaches 75% of the design strength. The backfilling should be within a range of not less than 2 times the aperture on both sides of the culvert body. , and at the same time, it is layered horizontally, symmetrically filled and compacted according to the degree of compaction required by the design.
10. Safety: Safety first, strictly control quality. During the transportation and installation process, pay attention to personal safety and rather be slow than to rush for a second.
Introduction to cement drainage pipes:
1. Production of reinforced concrete drainage Pipe equipment: mixing system, pipe mold (flat mouth, tongue and groove, socket, double socket, steel socket), forming equipment (centrifuge, hanging roller machine, vertical axial extrusion molding machine, vertical radial extrusion Molding machine, mandrel vibration hydraulic forming machine, vertical radial extrusion molding machine, mandrel vibration hydraulic forming machine, vibration forming device), feeder, steel plate frame seam welding machine, hydraulic pre ss, external pre ss, etc.
2. Drainage pipe specifications include pipe inner diameter DO (100mm-3000mm), length LO (30mm-200mm), pre ssure index, grade I, grade II and grade III calibers are divided into: flat mouth, tongue and groove, bearing. Socket, double socket, steel socket.
3. The drainage pipe is a new corrugated drainage plastic pipe made of high-density polyethylene (HDPE) with other additives added. The permeable corrugated pipe is made by drilling holes in the grooves. The outside of the pipe is wrapped with needle-punched geotextile. According to the type of corrugated pipe, it can be divided into single-wall permeable corrugated pipe and double-wall permeable corrugated pipe.
4. Since the tube holes of this product are in the trough and are elongated, it effectively overcomes the shortcomings of flat round hole products that are easily blocked and affect the drainage effect. According to different drainage requirements, the tube holes The size can be 10mm×1mm-30mm×3mm, and can be evenly distributed within the range of 360 degrees, 270 degrees, 180 degrees, 90 degrees, etc.
5. It, together with soft permeable pipes and plastic blind ditches, have become the three main products in my country's civil engineering construction (water seepage, drainage). Depending on the drainage pre ssure, the municipal drainage pipe network can choose double-arm corrugated pipes or straight-wall pipes. Straight wall pipes have strong pre ssure bearing capacity and can be used as special pipes in large drainage and sewage pipe networks.