CONSTRUCTION RESOURCES COMPACT DISK:

A LIBRARY ON YOUR DESK

Dana J. Vanier, Jamie L. Worling, B. Scott Mellon
Institute for Research in Construction
National Research Council of Canada


Abstract

This paper describes Construction Resources and identifies a need for fast, simple, user-friendly, and robust software for the construction industry. It outlines the features of the Compact Disk product including the user interface design, hypertext environment, and the inverted indices.


Introduction

The construction industry is information intensive. It needs accurate, reliable and timely information, ranging from legal requirements, codes and standards, through scientific and engineering research results, to manufacturers' product specifications, and finally to site-specific data about buildings. This compact disk deals with the first two categories.

The goal of the Construction Resources project is to collect, organize, integrate and distribute information developed by the Institute for Research in Construction (IRC). The information sources are of different types, formats and structures, and will be distributed in electronic information to construction practitioners on compact disk media (CD-ROM). The Construction Resources CD provides fast access times for search and retrieval and uses a common, simple and intuitive interface. It is intended as a part of the practitioner's library; residing on a desktop computer, to be used as and when required.

Construction Resources contains over 1.5 million words of text, 600 pages of graphics and 400 pages of tables. Included in the 100 megabytes of information are abstracts of most publications by the IRC, full text of the Canadian Building Codes, and summaries of Canadian Standards Association (CSA) construction standards.

The Construction Resources CD-ROM is currently under evaluation at 100 sites; architects, engineers, construction practitioners, and government and university researchers around the world are participating in the evaluation of the software. The results of the beta test will hopefully lead to the full implementation of a powerful, yet easy to use, information system for the construction industry.


Construction Resources Data Sets

Construction Resources is a graphical tool. It relies heavily on iconic representation, pull-down menus, point-and- click, and a mouse.

IRC PUBLICATIONS include abstracted information of over 2900 technical papers published by the IRC since 1972, as well as significant publications preceding that year. The fields include standard bibliographic information such as author, title, abstract, name of journal, publication date, and keywords.

PUBLICATIONS de L'IRC include the French versions of the abstracted information for approximately 2000 IRC publications.

CANADIAN BUILDING DIGESTS include a full text collection of all CBD's published since August 1966. It contains over 350 pages of text, graphics and tables. The CBD's are four page synopses for construction practitioners; the topics range from basements to roofing.

BUILDING SCIENCE INSIGHT includes full text of five years of the BSI seminar series. It contains over 400 pages of text, graphics and tables on topical construction technologies such as small buildings, window performance, fire safety and air barriers.

CANADIAN CONSTRUCTION EXPERTISE includes expertise resources in construction research. It contains over 600 records of people, organizations and projects dealing with construction research. The fields related to the experts include name, address, telephone numbers, supporting organization(s), expertise, degrees, publications, societies, and honours. The organization records include organization description, staff members, addresses, and current projects. The project records include name of project, participants, research activities, research publications and funding amounts.

CANADIAN BUILDING CODES: include full text and tables of the 1990 editions of the National Building Code of Canada, the National Fire Code of Canada and the Canadian Farm Building Code. These code documents include over 1000 pages of text. Each of the 10,000 provisions is a record in the dataset. As the record also includes the headings for the sections, it therefore contains all the contextual information needed for keyword searching.

CSA STANDARDS include CONSTRUCTION PLUS, a publication containing summaries of all CSA construction standards. Each of the 300 summaries outlines the scope and content, as well as a listing of requirements and test methods of the standard.


Technical Details of Construction Resources

Construction Resources relies heavily on three technologies: User Interface Design, Hypertext and Inverted Indices. The user interface design provides a fluid, consistent communication with the user; the hypertext technologies permits the text-based presentation of information; and the inverted indices provide the fast access, Boolean search capability.


User Interface Design

A number of tools have been designed to assist the user navigate through the large volumes of information:

~ "Browser" is an interactive window or palette permitting the navigation functionality such as Next Card, Last Card, Search Card, Index Card, or Find.

~ "Audit Trail" is a tool that saves a pointer to all the records viewed in a session; clicking on the desired record will return the user to that location.

~ "Pull-Down Menus" or keystroke equivalents duplicate the functionality of the Browser, allowing the user to navigate through the datasets or from one record to another.

~ Figures and tables are normally presented as separate windows on the screen. In most cases the user can pan and zoom on the contents of these windows.

~ "Reference Number" permits the user to move directly to a document by typing the exact document name such as 'CBD 65', 'NBC 1.2.1', or 'CSA B78.5'. This can be used at any time or while in any data set.

~ "Cross references" are identified with special iconic representation indicating to the user that additional information can be obtained by clicking at that location. Cross references are used to point to other documents, to tables and figures, and to definitions of terms. The cross references use a Virtual Access Table (VAT); when a cross reference is clicked, the VAT is dynamically checked to see if the reference exist and the user is brought to the proper reference.


Hypertext

The hypertext environment is used as a shell for the text and graphic information. The individual documents are saved in records and fields; some documents are divided into several records based on their internal structure. Although the hypertext environment lends itself to browsing, some hypertext implementations have limited capability for fast, dynamic navigating through datasets. In Construction Resources, all cross references, figures and tables are "soft wired" to the destination document using the VAT, providing rapid access to other locations. In addition, any string of text can be highlighted on the screen and searched using the Inverted Index.


Inverted Index

A set of external commands from a third party company was used for the inverted index. Boolean AND, OR and wild card suffixes are supported. Three search strings are available to the user and these can contain as many terms as desired. The general format for the search follows:

The results of the search are displayed in a single line format, detailing the dataset name, dataset record and record heading. The following is the first 15 lines of 46 records dealing with "Fire Escapes":

__________________________________________________________________

IRCpub P 1593 Experimental fire tower studies
IRCpub P 1453 Smoke control and fire evacuation by elevators
IRCpub P 672 Design of a stairshaft pressurization system
IRCpub RP 642 Building evacuation and other fire-safety measures
IRCpub RP 631 Experimental studies on pressurized escape routes
IRCpub CBD 33 Fire and the compartmentation of buildings
IRCpub CBD 11 Fire and the design of buildings
CBD 230 Applying building codes to existing buildings
BSI 90(1) Small Buildings - Technology in Transition
NBC 3.2.2.3 Exceptions to Structural Fire Protection
NBC 3.4 Requirements for Exits
NBC 3.4.1.4 Types of Exit
NBC 3.4.5.1 Exit Signage
NBC 3.4.6.7 Stair Treads and Risers
NBC 3.4.7 Fire Escapes
__________________________________________________________________

Searching the entire compact disk will display the results in approximately three seconds. However the user can easily limit the selection to any or all datasets. Clicking on the desired record will bring the user to the full text document in a matter of seconds.


Data Output

The original view of Construction Resources was a totally electronic system with no need or method for printing; user demands altered this biased view of the world. In place of developing complex printer drivers and output formats, a comprehensive electronic output style was adopted. It relies on Rich Text Format (RTF) as the export mechanism. RTF is a neutral format used by word processors to transfer the contents as well as the typography of a document to other programs, word processors or computer platforms. In Construction Resources, RTF templates were developed for each data set and the desired information is exported in RTF when requested. This can be read with most word processors. This not only serves as a printing device, but provides the user with more control over moving data to other documents or transmitting these documents via modem or FAX.


Summary

Construction Resources was started as an in-house tool for researchers at IRC. It was made available in an earlier form on magnetic media to a small group of architects, engineers and constructors for an alpha test. It is now under review by a limited number of users for the beta test. Results of the beta test will form part of a future article on the Construction Resources project. Comments from the beta test sites will dictate the direction of Construction Resources. Not only are these comments essential to research and development at IRC, but they will also assist software developers serving the construction industry.

Construction practitioners require data, information, and knowledge in this rapidly advancing industry. Conventional publications are difficult to obtain, awkward to access, onerous to maintain, and expensive to store. The typical construction practitioner is not a computer expert and does not intend to be one. Simple, fast, user-friendly and robust software should be the objective of software developers working with the construction industry. Construction Resources answers both these needs and provides relevant information to building practitioner on their desktop.

Electronic books are the wave of the future, compact disk is one of many media available to information suppliers. Compact Disk Interactive (CD-I), read-write optical disks, and distributed network servers such as Gopher and the Wide World Web all hint at potential distribution networks for conventional publishers. The introduction of Architronic -- the Electronic Journal of Architecture echoes these advances. Each medium has its niche marketplace, and all can provide fast, timely and accurate information to the construction industry.


BIBLIOGRAPHY

1. Vanier D.J., A HyperCard National Building Code, Electric Architect, Oct/Nov 1991.

2. Worling, J.L., Vanier D.J., Mellon B.S., Electronic Technical Information: An Access and Distribution System, Proceedings of the Joint CIB Workshops on Computers in Construction, Montreal, P.Q., May 1992.


Copyright 1992 Dana J. Vanier, Jamie L. Worling, B. Scott Mellon

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