Piping and Valves Knowledge [Daily Question] 11-4-14
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This post was last edited by security on 2011-4-14 10:12. What are the general rules for installing pipe penetrations? 1) All participants will receive a reward (usually 5 points for correct answers, 3 points for incorrect ones, 1 point for unhidden answers; additional points may be given to those who provide detailed discussions) ； 2) Please hide your replies by clicking: Hiding method ； 3) Do not edit after replying ； 4) This question will be closed the next day or when a new daily question is released; 5) Answer: To spark further discussion: 1. Pipes running through walls must be fixed before concrete is poured, and pouring can only proceed after they have been inspected and found to be in order. The embedded sleeve shall be equipped with a water-stop ring and welded tightly. 2. At the junction of the membrane waterproofing layer and the pipes passing through it, if the sleeve is equipped with flanges, the membrane should be attached to these flanges; the adhesive application width should be no less than 10 cm, and the area to be bonded must be rust-free and free of debris prior to application. If the casing lacks flanges, an additional layer of coil material shall be added.
At the points where pipes pass through walls, reserved holes should be provided or sleeves should be installed
When a pipe passes through a wall via a sleeve, it is generally at the same level as the wall and does not need to extend out. When passing through the floor slab, it is generally set 5 cm above the finished floor level.
A sleeve needs to be installed, and the gap between the sleeve and the pipe wall should be filled with filler
What exactly did the moderator mean by using elbow pipes? General rules for installing curved pipes through walls: There should be no welding points inside the wall, and the gap between the pipe and the wall opening must not be too large
When a pipe passes through a wall via a sleeve, it is generally at the same level as the wall and does not need to extend out. When passing through the floor slab, it is generally set 5 cm above the finished floor level. When budgeting, all sleeves are counted by \"piece\", with each piece being 30 centimeters long. However, in some areas (such as Jiangsu), when steel sleeves are used, the quota for outdoor welded steel pipes is applied after calculating based on length.
Come in and learn* My answer: Pipes that pass through walls and floor slabs. A sleeve should be added, and pipe welds should not be located inside the sleeve. The length of the wall-penetrating sleeve shall not be less than the wall thickness. The floor slab sleeve should extend 50 mm above the floor surface. Pipes passing through the roof should be equipped with waterproof seals and rain caps. The gap between the pipe and the sleeve should be filled with non-combustible material.
When a pipe passes through a wall via a sleeve, it is generally at the same level as the wall and does not need to extend out. When passing through floor slabs, the surface usually rises by 5 to 10 centimeters above the floor level. If steel sleeves are used, select a size two larger than necessary and fill it in. When special requirements apply, the casing must be connected via flanges.
When a pipe passes through a wall via a sleeve, it is generally at the same level as the wall and does not need to extend out. When passing through the floor slab, it is generally set 5 cm above the finished floor level.
Add a sleeve; it must not pass through the lounge