Pipe rack setup
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Our unit’s regulations: Metal pipes less than or equal to DN50 do not have shelves. Non-metallic pipes less than DN50 do not have shelves. How do you usually do it?
What the poster said is not clear enough. How can the pipes not be bracketed? The smaller the pipes, the closer the spacing between the brackets. I guess what the poster means is that the support design for small pipes is not done and the construction team can do it on site.
It means the second floor, but the second floor where materials are produced does the same thing?
They should all be required. The location and type of the bracket should be indicated on both the floor plan and the one-line diagram.
The metal pipes that are DN50 or less do not have racks, probably because the pipes are too small and there is no need to list them one by one. The pipe racks of these small restaurants can be added on-site during on-site construction. The steel structures can be directly welded in the appropriate place, while the brick-concrete structures can be directly fixed with expansion bolts to fix the pipe racks. Anyway, the load is not very large, and generally there will be no problems.
It depends on whether you are hanging in the air, buried or close to the ground. If it is hanging in the air, Kendi needs something to fix it! !
Pipes of any diameter require brackets. The design is not done on-site. A small number is okay, but a large number is difficult to handle.
What the original poster means is that the support design for small pipes is not done. Let the construction team do it on site. If you follow the regulations, you must do it. The design specifications have regulations. If you don't do it, how can I build it? I don’t have to do the construction either.
Small pipes should also need brackets. If the construction personnel are allowed to determine the position themselves, if the determined position is inappropriate, the stress generated will be relatively large, and an accident may occur.
Generally, for small pipes, there is an installation instruction and installation atlas, but there is no location, just instructions.
I don’t understand. Small pipes are not designed to have brackets, but are made at the construction site. But how to ensure that the pipe racks made by the construction team are suitable? Small pipes may also carry harmful and toxic media. This stipulates that if something goes wrong because the brackets are not set correctly, who is to blame? The designer must be responsible. Let the construction team do this. The risk is not small.
It is not necessary to make a design. It is best to mark the location where the bracket needs to be made in the design, so that workers can fix it according to the actual conditions on site.
To design is to do design things and bear the responsibility of design. The statement you mentioned is from the previous regulations. At that time, the requirements for construction were not so high, and the design drawings were mainly drawn by hand. This was a regulation made to reduce the design cycle. There are many similar issues, such as no drawings for pipes below three inches, etc. Decades have passed, and design has evolved from manual work to computers to professional piping software. The speed is very fast, and the drawings are standardized. It is completely possible. There are still designs that use this as a reason and do not produce detailed drawings, which is difficult to understand.
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For some non-pressure pipes, or GC3 grade pipes, the instructions are to make one every M, generally the construction unit can do it by themselves. If you don't exit a pipeline above GC2, the design institute will be responsible if something goes wrong.