By Roy A. Parisher, Robert A. Rhea
Pipe designers and drafters supply hundreds of thousands of piping drawings utilized in the structure of business and different amenities. The layouts needs to conform to safeguard codes, executive criteria, buyer requirements, finances, and start-up date. Pipe Drafting and layout, moment version offers step by step directions to stroll pipe designers and drafters and scholars in Engineering layout pics and Engineering expertise throughout the production of piping association and isometric drawings utilizing symbols for fittings, flanges, valves, and mechanical gear. The publication is suitable essentially for pipe layout within the petrochemical industry.
greater than 350 illustrations and images offer examples and visible directions. a special characteristic is the systematic association of drawings that starts off with the format of the structural foundations of a facility and keeps via to the advance of a 3D version. complicated chapters speak about the customization of AutoCAD, AutoLISP and info at the use of third-party software program to create 3-D types from which elevation, part and isometric drawings are extracted together with debts of material.
Covers drafting and layout basics to distinctive recommendation at the improvement of piping drawings utilizing guide and AutoCAD techniques
3-D version pictures supply an unusual chance to imagine a complete piping facility
Each bankruptcy comprises workouts and questions designed for overview and perform
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Extra resources for Pipe Drafting and Design (2nd Edition)
Example text
Flange Basics Weld Neck Flange The weld neck flange shown in Figure 4-8 is occasionally referred to as the "high-hub" flange. It is designed to reduce high-stress concentrations at the base of the flange by transferring stress to the adjoining pipe. Although expensive, the weld neck flange is the best-designed butt weld flange available because of its inherent structural value and ease of assembly. Known for its strength and resistance to dishing, the weld neck flange is manufactured with a long tapered hub.
Many companies will use 3" as the standard minimum for pipe nipples. This length will accommodate the amount of pipe lost inside the fitting on each end as well as provide sufficient wrench clearance during assembly for the larger screwed and socket-weld pipe sizes. 34 Pipe Drafting and Design Figure 3-46. Placement of dimensions. Figure 3-47. Screwed fittings dimensioning chart. Pipe Fittings Figure 3-48. Socket-weld fittings dimensioning chart. Figure 3-49. Internal and external threads. 35 36 Pipe Drafting and Design Figure 3-50.
The 90° short-radius ell makes a much sharper turn than does the long-radius ell (see Figure 3-8). Conversely, the short-radius ell also creates a rather large pressure drop inside the line and does not have the smooth flow characteristics the longradius ell has. For these reasons the short-radius ell is seldom used. Figure 3-9. Center-to-end dimension of the shortradius elbow. Drafting Symbols for the Short-Radius Elbow The drawing symbols for a short-radius elbow are shown in Figure 3-10. R. must always be placed adjacent to the drawing symbol.