Duty specific code driven design methodology : a model for better codes
The thesis examines Engineering Design and its methodology in general before examining and comparing the principal differences between Inventive Design and Development Design. This latter branch of design is described in detail, recognising that it is executed in accordance with recognised specifications, design codes and standards. Design Codes and Standards are analysed in terms of the service they provide to the professional design engineer who will normally work under the procedures and accepted standards of a Professional Design House. Professional design is an important part of all disciplines in the engineering profession. Such design work is executed by specialists, invariably guided in their work by recognised Specifications, Design Standards or Codes of Practice published by recognised reputable bodies who appoint working parties or independent committees to write and maintain these documents. Design Standards and Codes of Practice are at best unclear and at worst confusing if not down right contradictory within themselves. Usually there is more than one such Standard or Code available to the professional design engineer often based on geographical location; BSI in the UK, DIN or ISO in Europe and perhaps ASME ANSI in the USA. There are of course several others. The professional design process is analysed and described in order to demonstrate the commercial and project constraints associated with professional development design. The model usually adopted in the preparation and presentation of these codes and standards is critiqued and a better model proposed for standard adoption.