Piping estimating

From Table 2-4, select 6 ft/sec as design velocity for estimating pipe size. 

Typical pipe velocities and allowable pressure drops, which can be used to estimate pipe sizes, are given below ... 

Bromberg, I. A Look at an Engineering Contractor s Overhead Costs, Sept. 12,1966, p. 218. Sokullu, E.S. Estimating Piping Costs from Process Flowsheets, Feb. 10,1969, p. 148. 

Two general methods have been used to estimate piping costs when detailed flow sheets are not available. One method is to use a percentage of the FOB equipment costs or a percentage of the fixed capital investment. Typical figures are 80 to 100 percent of the FOB equipment costs or 20 to 30 percent of the fixed capital investment. This method is used... 

For fluid handling plants. Based on average of actual cases. For solid handling plants - best estimate. Piping work hours breakdown P ID drafting 0.07 Layouts 0.05 Model 0.10 Orthographies 0.33 Material take-offs 0.10 Stress analysis 0.05 Isometrics 0.30 ... 

To estimate pipe size, the Weymouth equation can be used for low-pressure steam or gas flow ... 

Plant/ extra column Experiment + moment analysis + parameter estimation pipe> tanlc ( plant) if necessary D p e Experiment + moment analysis tpla , Experiment + moment analysis plant... 

Figure 7-73 can also be used for estimating pipe diameters at gravity flow process piping.)... 

Tabls 9-15. X Factors for Estimating Piping-material Costs (Based on steel pipe reference Fig. 9-16)... 

Then, highlight Main Project, right click, and press Add Area to produce the Area Information dialog box in which an Area Name (e.g.. New Item) is entered with its dimensions. Here, a 50 x 50 area is reserved and used to estimate piping lengths, etc. This is adequate for most applications. Note that the original area for the plant, which was named Miscellaneous Flowsheet Area by Aspen IPE, is also 50 x 50 by default. 

Lansdale, J. T. and Mundy, J. E., "Estimating Pipe Heat Tracing Costs", Chemical... 

Piping design The plot plan is used to produce equipment arrangement studies that facilitate the interconnection of above- and below-ground process and utility piping systems and to estimate piping material quantities. 

Fleming, K.N. Lydell, B.O.Y, 2004. Database development and uncertainty treatment for estimating pipe failure rates and rupture frequencies. Reliability Engineering System Safety, 86(3) 227-246. 

Field Engineer s Method for Estimating Pipe Flow... 

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