GIS Tech News (#38)

The Latest Dirt on Soil Compaction

Few people use the words “intelligence” and “dirt” in the same sentence, but that may change if some emerging technology gains a foothold in the construction industry. The use of IC (intelligent compaction) equipment, which allows construction crews to monitor in real time the compaction of roadbeds and other earthwork projects, offers new ways to improve pavement durability and construction efficiency.

Although the technology has been used in Europe for several years, IC has only recently gained momentum in the United States as research progresses and test projects provide data demonstrating its reliability. Early indications are that IC can deliver numerous benefits to owners and builders, although challenges remain in areas such as data management and standardization of IC practices.

How It Works
Definitions of IC vary, but in general, the technology measures soil compaction parameters by equipping compaction equipment with sensors that monitor soil compaction, and global positioning systems that locate where readings are taken. Vibratory rollers are equipped with accelerometers that measure either displacement of the rolling drum or acceleration forces exerted by the drum, providing data that can be correlated into soil compaction values. By recording data in real time and using GPS equipment to record location data, soil compaction data can be mapped to identify problem areas and guide equipment operators to where more compaction is needed. Some equipment can even adjust compaction energy as readings are receive. Read more>>

First Look Review: Mathcad 14.0

By Mike Hudspeth, IDSA

In a parametric modeling system, you must plug in numbers to control your sketches. That in turn allows you to control and change your model. But where do you get your numbers? Many times, you can measure parts with which your new model will mate. Other times, you've got to come up with numbers to describe the length, width, height or whatever is important to the function of the part you're designing. If those numbers aren't given to you, you'll need to figure them yourself--and that means calculations. You know, math. Read more>>

UPCOMING GIS EVENTS
Cadalyst's complete list of upcoming events is always available on our Web site. Cadalyst's sister publication, Geospatial Solutions, also offers a full calendar of GIS-related events.

COMSOL Conference 2007
October 4-6, 2007
Newton, Massachusetts
At the third annual conference on multiphysics simulations, organized by COMSOL, scientists and engineers learn how multiphysics technology is being adopted for a wide span of applications in industry and academia. Keynote addresses and more than 70 user presentations will be presented by leaders in the field. Read more

Autodesk University
November 27-30, 2007
Las Vegas, Nevada
Autodesk University offers more than 500 learning opportunities including advanced classes, hands-on labs, business-management solutions and strategies, and more. An Exhibit Hall features cutting-edge tools and services from leading application developers and strategic partners; briefings by Autodesk executives and product managers on key business trends, product futures, and company direction; and social events. Read more