- Email: [email protected]
Cad scene
CAD
I-A ni-l-=“rl” TIN NATIONAL
Ll
COMIUTINO
CENTIt
\LllLLJ
Cutting the chores in civil engineering
SCENE
The National Computing Centre has arranged to make available to the construction and engineering industry an integrated suite of programs for project supervision and control, which may well result in savings of up to 10% of turnover for building and civil engineering contractors. The system, known as PRI-COS, has been in use in Sweden for three years but has been modified to meet the needs of the English market, and to suit computers commonly available in the UK, by NCC in close collaboration with the Construction Industry Training Board and other interested parties. It is made up of a total of 40 programs in three sub-systems covering estimating, planning and budgetary control. Each of the sub-systems can be used independently of its companions. The first, for estimating, is now available from bureaux, and will become available as a package direct from NCC at f2,OOO;the entire system will be available next year, initially via bureaux but also as a package from NCC at f7,OOO. Use in the design stage of civil engineering
continued/ram
page 61
The computer then calculates various data for the variation on basic design. The output includes in practice longitudinal strength factors such as bending moment and shear force, the trim and draught, vessel stability, displacement and deadweight. Using a computer to aid the design enables the shipbuilder to make available a choice of ship designs in one or two days, compared with one month by other methods. Shipbuilding
and Shipping
Record,
1969, 114
(II), 29. Processdesign benefits from c-a.d.-Modem methods of design incorporating c-a.d. can prove beneficial to a small company, e.g. the use of complex fundamental analysis, applying user-odentated software, and renting time-shared computer facilities. In short, computer-aided process design using timeshared equipment has been applied to several processeswith a high measure of efficiency. It is estimated moreover that engineering time savings of up to IO% and operating cost savings of up to 50% are quite feasible 70
contracts can result in dramatic savings, particularly if a greater number of altematives can be investigated, than would otherwise have been the case. Studies show that whereas at present a contractor may typically spend 24 % of turnover in working out estimates and cost controls, the PRI-COS system will reduce this to about 14% of turnover, once staff have been trained. This figure, however, ignores indirect or ‘secondorder’ savings, such as greater efficiency in output and better stock and financial controls which can result from the use of integrated systems-eg. use of a standard component catalogue across a company. In some cases, these can amount to up to IO% of turnover. NCC is also in the course of developing a series of related training courses, in cooperation with the Construction Industry Training Board. Further details of both the system, and the above courses, may be obtained from : K. Vine-Lot& Esq., Head, Department of Industrial Engineering, The National Computing Centre Ltd, Quay House, Quay Street, Manchester, M3 3HU.
in practice. The sample problem considered in this particular evaluation is that of a thin him evaporator for removing high boiling monomer from polymer solution. 3 References. W. R. Ludwig et al., Chem. Eng., 1969, 76 (5), 98-105. Bearing de&n - Without doubt the greatest advance in bearing design is the understanding of the role of lubrication on preventing a metal-to-metal contact, and here the use of c-a.d. can make a useful technological contribution to design. The demand for improved designs of bearing was increased by the arrival to high speed, high temperature, aero-jet engines. In this connection fundamental questions relating to bearing performance were translated into equations which were then adapted to mathematical models for the computer. In this way programs for the design of ball and roller bearings were developed and made available for a fee. T. Harris, Prod. Eng., 1969, 40 (17), 24-26. COMPUTER
AIDED
DESIGN
I-A ni-l-=“rl” TIN NATIONAL
Ll
COMIUTINO
CENTIt
\LllLLJ
Cutting the chores in civil engineering
SCENE
The National Computing Centre has arranged to make available to the construction and engineering industry an integrated suite of programs for project supervision and control, which may well result in savings of up to 10% of turnover for building and civil engineering contractors. The system, known as PRI-COS, has been in use in Sweden for three years but has been modified to meet the needs of the English market, and to suit computers commonly available in the UK, by NCC in close collaboration with the Construction Industry Training Board and other interested parties. It is made up of a total of 40 programs in three sub-systems covering estimating, planning and budgetary control. Each of the sub-systems can be used independently of its companions. The first, for estimating, is now available from bureaux, and will become available as a package direct from NCC at f2,OOO;the entire system will be available next year, initially via bureaux but also as a package from NCC at f7,OOO. Use in the design stage of civil engineering
continued/ram
page 61
The computer then calculates various data for the variation on basic design. The output includes in practice longitudinal strength factors such as bending moment and shear force, the trim and draught, vessel stability, displacement and deadweight. Using a computer to aid the design enables the shipbuilder to make available a choice of ship designs in one or two days, compared with one month by other methods. Shipbuilding
and Shipping
Record,
1969, 114
(II), 29. Processdesign benefits from c-a.d.-Modem methods of design incorporating c-a.d. can prove beneficial to a small company, e.g. the use of complex fundamental analysis, applying user-odentated software, and renting time-shared computer facilities. In short, computer-aided process design using timeshared equipment has been applied to several processeswith a high measure of efficiency. It is estimated moreover that engineering time savings of up to IO% and operating cost savings of up to 50% are quite feasible 70
contracts can result in dramatic savings, particularly if a greater number of altematives can be investigated, than would otherwise have been the case. Studies show that whereas at present a contractor may typically spend 24 % of turnover in working out estimates and cost controls, the PRI-COS system will reduce this to about 14% of turnover, once staff have been trained. This figure, however, ignores indirect or ‘secondorder’ savings, such as greater efficiency in output and better stock and financial controls which can result from the use of integrated systems-eg. use of a standard component catalogue across a company. In some cases, these can amount to up to IO% of turnover. NCC is also in the course of developing a series of related training courses, in cooperation with the Construction Industry Training Board. Further details of both the system, and the above courses, may be obtained from : K. Vine-Lot& Esq., Head, Department of Industrial Engineering, The National Computing Centre Ltd, Quay House, Quay Street, Manchester, M3 3HU.
in practice. The sample problem considered in this particular evaluation is that of a thin him evaporator for removing high boiling monomer from polymer solution. 3 References. W. R. Ludwig et al., Chem. Eng., 1969, 76 (5), 98-105. Bearing de&n - Without doubt the greatest advance in bearing design is the understanding of the role of lubrication on preventing a metal-to-metal contact, and here the use of c-a.d. can make a useful technological contribution to design. The demand for improved designs of bearing was increased by the arrival to high speed, high temperature, aero-jet engines. In this connection fundamental questions relating to bearing performance were translated into equations which were then adapted to mathematical models for the computer. In this way programs for the design of ball and roller bearings were developed and made available for a fee. T. Harris, Prod. Eng., 1969, 40 (17), 24-26. COMPUTER
AIDED
DESIGN