Empirical estimation of pipe length in meters and inches
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I would like to ask the experts for the approximate methods of calculating the number of pipes and the number of inch ports. For example, if one only knows that the total length of the process pipes in a set of equipment is 10,000 meters, then approximately how many inches is that?
This also requires finding similar projects for sorting through. With different devices, different principles, and different equipment, it loses its reference value. Moreover, it’s not necessary to use a full pipe for installation; there’s no need for all those twists and turns.
This is quite difficult; there is no inherent connection between the number of pipes and the number of connections. After all, depending on the installation, scale, and equipment used, the corresponding number of pipes also changes. One can only try to find similar projects from previous cases. Are you the owner? Do you need to estimate the workload for the construction team?
1. Classify and tally the specifications of the piping design data, and determine the length of the steel pipe material. 2. Count the fittings of the same specification; for example, a set of flanges, elbows, tees, welded valves, etc. are considered to have 2 welds, while tees have 3 welds. 3. Convert the perimeter of each weld into inches, and summarize the counts for each specification to obtain the total inch diameter of the device. 4. Use a rough calculation for speed, or a more precise calculation for accuracy. When determining the working hours, the construction unit needs to calculate detailed figures, while submitting a rough estimate to the client. 5. It holds little significance for Party A; it’s merely a figure to be reported during progress meetings
When preparing a schedule, an approximate duration is needed; however, in practice only the total time is known, so an estimated duration is required. I am aware of the precise calculation methods for things like flanged valves as suggested by those with more experience, but I don’t have enough time to carry out those calculations. So, how long does it generally take to complete piping installation based on experience?
Taking our hydrogenation unit as an example, there are approximately 35,000 meters of various types of pipes. The pipe drawings were distributed starting in April last year, and the work was completed by the end of December with successful testing, so you can get an idea of it. Since it’s not known what kind of device it is, it’s impossible to determine; but in terms of piping, as long as there is enough manpower and materials, it usually takes about 10 months. In fact, what really affects a project is funding; with money available, everything progresses faster. I’ve encountered this more than once – workers go on strike due to unpaid wages, which affects the project timeline. However, assuming it is an aging factory, there should be experienced personnel who can make estimates by referring to past construction situations
The length in meters represents the total amount of material required to construct this setup, while the number of connections and the length in meters aren’t directly related, right? Unless they are all ductwork! But from your description, it’s clear that elbows, tees, and various pipe fittings are needed!
The project timeline depends on funding and resources allocated. When the deadline is tight, more manpower and equipment are required, which means the construction company must have strong organizational capabilities and strength