Photogrammetric Dimensioning of Ship's Engine-room Models
Abstract
1.1 Background Where shipbuilding is most competitive, methods and skills have been developed so that design processes are truly aspects of planning. A typical such process for detail design of a machinery space is an ideal example. Immediately after preparation of separate system diagrammatics, the diagrams are arranged together, sometimes freehand, in order to quickly relate systems and zones; see Figure 1-1. Such relatively rough piping, component and wiring arrangements are the bases for preparation of detail fitting arrangements which are complex composites as shown in Figure 1-2. Representations therein for individual fittings are simplified but, nonetheless, are sufficient for: . providing the configuration of each fitting, . listing required materials, and . identifying the positions of fittings relative to each other. This sophisticated design approach is especially beneficial because: *it accelerates the design process and can be performed with as few as a quarter of the manhours needed by traditionalists (there is no investment in unnecessary system arrangement drawings), *detail designers incorporate essential production-control measures, e.g.: - structured material lists, - classification of work packages by zone/area/stage as for the Zone Outfitting Method (ZOFM), and - identification of pipe pieces as needed for Pipe Piece Family Manufacturing (PPFM), and the composites are formats for continually improving and reapplying work packages for different size and type ships when zone/area/stage classifications correspond. However, this design process which best serves shipbuilders is critically dependent upon very experienced people, continually interacting, who can prepare or decipher the complex fitting arrangement drawings.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1981
- Accession Number
- ADA451946
Entities
People
- J. F> Kenefick
- L. D. Chirillo