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APPENDICES FOR COMPUTER AIDED DESIGN AND DRAFTING (CADD) PROJECT

In an effort to increase the productivity of the design engineering staff, a project is underway to implement a Computer-Aided Design and Drafting (CADD) system into Caltrans design offices. As part of the implementation a six-month $3 million pilot project was installed in 1984. The purposes of the pilot was to determine required hardware and software needs, to provide an opportunity for development of procedures, and most importantly to verify expected productivity gains. The pilot project equipment was installed in May 1984. Two systems were installed, one in Los Angeles and one in San Francisco with a total of seven remote sites connected to the systems. The Los Angeles system consists of two computers (IBM 4341 and Intergraph VAX 11-780), six dual-screen workstations (three remote), two high-performance single-screen workstations, and eight low-performance single-screen workstations (three remote). The San Francisco system consists of one computer (Intergraph VAX 11-780), six dual-screen workstations (three remote), two high-performance single-screen workstations, and eight low-prformance single-screen workstations (four remote). Both systems include electro-static plotters, pen plotters, printers, and some color monitors. Training for the pilot project involved 67 individuals, primarily engineers and draftspersons. About 45 of the 67 received training on the computer-aided drafting equipment, 48 received training on the engineering programs (Roadway (engineers and draftspersons) completed extensive evaluations which included questions related to existing and expected productivity rates. This summaryis the result of the evaluations prepared on the Engineering Design System. Most of the comments from the users have been included with only a minor amount of editing to clarify or eliminate unrelated or duplicated data. The values without parenthesis are based on the responses provided by engineering personnel trained in the use of the engineering system; 32 evaluators. The values in parenthesis ( ) are based on the responses provided by seven "expert" engineering users which were selected from the 32 evaluators. Of the 32 evaluators, 20 are Assistant Transportation Engineers, 7 are Associate Transportation Engineers, 4 are Transportation Engineering Technicians and one is a Senior Transportation Engineer. The comparative efficiencies shown in this summary report are "base" values without adjustments for non-productive worktime, availability of workstations, productive work time for which CADD is not applicable, etc. Thus these values are not for use in determining staff needs. of these values and the productivity increases anticipated are included in the "Computer-Aided Design and Drafting (CADD) Project: CADD Pilot Project Post Implementation Evaluation Report (PIER) and Amendments to the Feasibility Study Report for Statewide Implementation." (Author)

  • Supplemental Notes:
    • CADD Pilot Project Post Implementation Evaluation Report and Amendments to the Feasibility Study Report for Statewide Implementation, January 24, 1985.
  • Corporate Authors:

    California Department of Transportation

    1120 N Street
    Sacramento, CA  United States  95814
  • Publication Date: 1985-1-24

Media Info

  • Pagination: v.p.

Subject/Index Terms

Filing Info

  • Accession Number: 00453530
  • Record Type: Publication
  • Files: TRIS, STATEDOT
  • Created Date: May 31 1986 12:00AM