How to construct the electromechanical secondary piping? Hand-in-hand example!
Release time:
Nov 28,2022
Secondary piping is a major work in the middle of the mechanical and electrical installation project, and the construction process is relatively regular. As long as step by step, the quality of the project is very good. Let's take a look at the example of secondary piping and demonstrate it hand in hand to help you learn the construction technology of secondary piping.
Pre-control of secondary piping construction:1, mechanical and electrical installation of secondary piping construction, the project department needs to install each operator of the team to carry out detailed special technical disclosure, so that each employee master the key points of construction, from the ideological attention of construction personnel; 2, strictly control the size of sand and gravel particles and cement grade, as well as the proportion of mortar, it is strictly prohibited to use masonry mortar; 3. After disclosure,NeedFour households on the first to second floors of a building are selected as samples of secondary water and electricity pipelines on the construction site, and a sample evaluation system is implemented. It is necessary to set up a wire box and slotted control line to locate the line, a gray cake to fix the wire box, a pipe structure, and a wiring trough to hang the net. After the completion of the construction, the project department shall conduct self-assessment. After the assessment is qualified, the company's installation engineer shall be notified to go to the site for sample assessment. Large-scale construction can only be carried out after the assessment is qualified. 4. Installation constructors, quality inspectors and team leaders shall regularly check the on-site construction quality and strengthen the supervision and management of the construction process.
Secondary piping construction process control:1. Elevation control of junction box and electric box. Location of box and electric boxNeedIn strict accordance with the drawing size, locationNeedAccurate, elevation to control. It is required to take the 1 meter line of the building as the baseline, and use the elastic line to locate the elevation of the frame. 2, according to the line box elevation control line, draw the line box positioning line. 3. Use ink fountain and set slot positioning control line. Requirements for slotting control line: conduit spacing is 10mm, conduit and masonry wall spacing is 10mm, slotting control line width = conduit outer diameter, conduit and wall spacing, slotting control line layout is clear and reasonable, horizontal slotting is strictly prohibited. If necessary, the horizontal slot length should not be greater than 300mm. 4. Water and electricity slotting. Water and electricity slottingNeedUse a special slotting machine, prohibit the use of electric hammer or manual slotting. 5. Manual slotting. The slotting shall be manual slotting, and it is strictly forbidden to use electric hammer slotting, so as not to damage the quality of masonry structure. 6, grass-roots treatment. Dust and sand in the trunkingNeedClean, loose partNeedClean it up. 7. Sprinkle water to wet the sink. After the ash is cleaned, before the box is fixed,NeedWater the trough with the temporary floor water diversion pipe to make the wall sufficiently wet. 8. The junction box is fixed. Before the box is fixed, the plastering teamNeedSet the ash cake according to the box location point arranged by the installation team so that the electrician can control the box in and out. Use transparent tape to protect the ash cake before spraying, and remove the tape before painting.
Secondary piping quality risk analysis:1. Analysis of the causes of poor access control between the box surface and the coating surface: The coating team of the project department did not set the coating thickness control reference point according to the requirements of Party A and the company before the box was fixed, so there was no reference for the access control when the box was fixed, and it was difficult to be flush with the later coating surface. 2. Cause analysis of water and electricity piping chute opening: After the pre-embedding stage, the positioning of the upturned and downturned conduits of the masonry wall is not accurate, and the construction of the workers is relatively casual, without considering the conduit layout requirements of the later wire box and electric box piping.
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