Runway rehab: a case for CADD

Article Abstract:

The rehabilitation of the runways at Logan International Airport by S E A Consultants Inc showed that computer-aided design and drafting (CADD) is better than traditional design methods. The rehabilitation work also showed how CADD should be properly implemented by letting engineers and designers operate the system and not a separate group. S E A engineers used Lotus 1-2-3 in entering field notes and exported the cross-section data into Softdesk's data/input/reduction module. Engineers also used AutoCAD release 10 and the Civil Design Series for general design work. In-house applications were also developed to supplement the Softdesk routines.

Airports, flying fields, & services, Highway and street construction, Maintenance and repair, Logan International Airport, S E A Consultants Inc.

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Landfill on screen

Article Abstract:

Montgomery Watson used a computer-aided-design (CAD) system based on an Intergraph UNIX workstation and the Inroads software package in designing and constructing a sanitary landfill in Lee County, IA. The CAD system allows designers to create true-scale-three-dimensional models of the landfill and to choose designs that ensure sufficient space and correct cut-and-fill earthwork.The CAD system made compliance with complex rules of Subtitle D of the ResourceConservation and Recovery Act an easy task. The CAD system increased the capacity of the landfill, which could increase its revenues.

Heavy construction, not elsewhere classified, Buildings and facilities, Iowa, Computer-aided design, Montgomery Watson Inc.

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Landfills: anatomy of automated design

Article Abstract:

Amidst a complicated netweork of narrow canyons sits California's 360 acre Bee Canyon landfill with side slopes 300 feet high. The complexity of the site and the short project schedule made the use of traditional methods of manual design and drafting an extremely impractical technique. However, designers were able to solve this problem by bucking the hidden costs, software limitations and hardware and software expense while successfully exploiting the capabilities of basic computer-aided drafting and design software packages in designing an efficient landfill design.

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