Practice of demonstration hydropower engineering mode: 1. Material requirements for hydropower engineering model: The construction unit of hydropower engineering model shall strictly implement the supply materials specified by the purchasing department. After the materials enter the site, the appearance, wall thickness and tolerance of the materials shall be inspected on site according to the product standards. At the same time, witness sampling according to the requirements of no less than two specifications of the same brand and batch, and entrust a qualified testing unit for re-inspection. It can only be used after passing the test.
2. Template process template standard of hydropower project: casing fabrication → on-site steel binding → casing installation and fixation → concealed acceptance → formwork support → concrete pouring.
3. Technical requirements for formwork of hydropower project: 1) Be familiar with the drawings carefully before making the casing, and analyze the manufacturing and installation methods of the embedded casing.
2) reference standard atlas production.
3) In the hydropower engineering model, all pipes passing through the basement exterior wall, pool and roof are embedded with rigid waterproof casing. The specification of waterproof casing is 2-3 times the actual pipe diameter. Waterproof casing made ordinary steel pipes according to the actual thickness of the wall. The length of the sleeve must be the same as the actual thickness of the wallboard. The length of rigid waterproof casing protruding from the roof should be determined according to the ground, waterproof layer, thermal insulation layer, steel wire mesh layer and protective layer. Determine the actual size of the layer.
4) Manufacture and installation of waterproof casing, a hydropower engineering model:
Machining water stop ring: the water stop ring is made of steel plate not less than 5-8 mm, deburring along the edge with a broken short pipe and standing upright on the steel plate. Draw a circle that is the same as the outside diameter of the pipeline along the outside of the pipeline, then draw a big circle on the extension line that is not less than 50mm, then cut off the small circle with gas cutting, and then cut off the part outside the big circle. The rest is the water ring. Welding steel pipe: saw the short pipe to draw a line, and put the processed water stop ring on the center line of the short pipe. First, weld a little with a solder joint, and then vertically balance the water stop ring with the broken pipe by 90 degrees. After spot welding around the pipeline is fixed at least 3 points, weld the gap between the water stop ring and the short pipe firmly. Welding should be carried out on both sides, and the weld should be uniform and complete.
5) The steel sleeves in the above-ground pipes, beams, columns and walls are all made of ordinary steel pipes, and the pipe diameter is 2-3 larger than the actual pipes.
6) Pipes, pipes and pressure measurement passing through civil air defense layer, civil air defense wall and non-proliferation room shall be embedded with the structure.
7) During installation, according to the hydropower plan and details, the two ends of the casing shall be clamped and fixed with more than three steel bars, and shall not be skewed.
8) The steel casing is higher than the ground of the pipeline.
9) After the installation of water supply and drainage bushings and electrical bushings, the nozzle should be flush with the wall, beam and cylinder.
4. Product protection of hydropower engineering model 1) Surfaces such as steel casing and water stop ring of hydropower engineering model shall be painted in time, with primer and topcoat applied, and gaps with concrete structures shall be filled in time to prevent rusting.
2) Effective measures should be taken to prevent the pipeline from being damaged when backfilling the through-wall part of the hydropower project model pipeline.
Matters needing attention in making hydropower engineering model: hydropower engineering model 1 electrical part, and some switch sockets have follow-up water supply and drainage pipes, kitchens, sanitary ducts, etc. Before construction, civil works must be reserved and embedded to avoid the influence of post-construction visas on the visual quality.
The through-wall pipes are exposed, especially in the bathroom. The reason is: the position and thickness of the wall are not clear, and the post-treatment is difficult. Counterfeit products are basically directly buried in condensate water, which seriously violates the installation specifications. 3. The location of indoor strong and weak current socket box is unreasonable. The strong box is too close to the weak box. The general requirement is 20 cm, especially the socket in the bedroom. When the owner later renovated, the socket was covered by the wardrobe and bed, which caused the owner's dissatisfaction.
4. Try to put the bathroom switch outdoors. If it is necessary to install a sputtering box in the room, it will be inconvenient to operate and the price will increase.
5. Before determining the position, the switch and socket must be embedded. Once determined, avoiding the location of the same apartment is mainly due to the lack of responsibility of the construction unit.
6. The underground garage before electrical embedment should be combined with the drawings of air ducts and pipes to avoid the overlap of lamps and lanterns with air ducts and pipes, which will lead to bright wire installation during the later installation of lamps and lanterns, increase the cost and affect the appearance.
7. There is a bridge in the garage, but the span beam is large. When the bridge partially crosses the beam, the steel sleeve can be embedded in the beam (the diameter of the sleeve should not be too large, and the designer must agree) to avoid the bridge coming under the beam and affecting the clear height of the garage.
8. Deepen the design content of drawings, and cancel unnecessary design content in advance according to the current scientific and technological development and actual situation. Such as designing telephone sockets in each room. I personally suggest that mobile phones can only be placed in the living room and master bedroom (or study), and the rest should be cancelled. This will save work cost. The content of deepening must be approved by the general manager before implementation.
9. It is best to use the nearest bus for electrical connection lines, such as toilets (it is better if there is an isobaric ring).
10. Plan the later supporting facilities in advance, such as water distribution construction drawing and outdoor pipe network drawing. This can shorten the delivery time and save costs.
1 1. Cable protection pipes and sleeves entering the underground garage must extend out of the wall for about 0.5m, which is convenient for cable plugging and external wall waterproofing in the later period.
1, the reserved holes in the drainage pipe and toilet of hydropower engineering model must be located accurately to avoid secondary hole filling and damage to the structure.
2. The drainage pipes in some bathrooms or kitchens are connected with the adjacent balcony drainage. In order to be beautiful and not damage the structure, rigid sleeves can be embedded in the beam to avoid drilling holes in the future.
3. The reserved thickness of external wall rainwater pipe and air conditioning condensate pipe is external wall insulation to avoid secondary hole patching.
4. The elevation of indoor sewage pipeline can be higher than the design elevation by 5- 10cm to avoid the slope of outdoor drainage pipe network being too small.
5, in order to improve the profit margin, mainly choose engineering materials, in the case of using function unchanged, try to choose economical materials.
6, the construction unit must build a model house, each construction a content, after the model through large-scale construction.
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