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Articles 181 - 199 of 199
Full-Text Articles in Engineering
Virtualstep: 4d Simulation, Purdue Ect Team
Virtualstep: 4d Simulation, Purdue Ect Team
ECT Fact Sheets
The main value from 4D is derived from using it proactively to visualize the construction sequence. Another benefit is the ability to run what-if scenarios to determine optimum scheduling and resource management. Also, by linking 3D drawings to a project schedule, all project stakeholders, from the owner to the tiling subcontractor, can see how the project is supposed to progress. VirtualSTEP Products include 4D Project Navigator, Conflict Coordinator, Project Reporter, and Project Analyzer. All these products are web-based.
Dma™: Digestion Material For Asbestos, Purdue Ect Team
Dma™: Digestion Material For Asbestos, Purdue Ect Team
ECT Fact Sheets
Current techniques for removing asbestos- containing fireproofing require the construction of air-tight barriers, labor- intensive scraping of the fireproofing, and the installation of new asbestos-free fireproofing. The DMATM product is the result of a joint development by W.R. Grace & Co. and Department of Energy's Brookhaven National Laboratory. The new technology uses a foamy solution sprayed directly onto asbestos-containing fireproofing. After absorbing into the fireproofing, the foam chemically digests asbestos fibers and dissolves them into harmless minerals. The process is the first to chemically destroy asbestos without first removing the fireproofing.
Asbestos Removal System (Envirosystem), Purdue Ect Team
Asbestos Removal System (Envirosystem), Purdue Ect Team
ECT Fact Sheets
A new asbestos removal system called EnviroSystem(TM) has been developed by CUPS Systems, Inc., and GRI (Gas Research Institute). It basically comprises a portable line traveling system that is composed of a high-pressure water jet coating removal device, called HydroKleaner, a vacuum pump, a side boom, a pump sled, a process sled, and a 20 cu.yd. disposal container. The system is operated by workers wearing protective gear and clothing.
Robotized Spraying Of Grc Panels, Purdue Ect Team
Robotized Spraying Of Grc Panels, Purdue Ect Team
ECT Fact Sheets
The manual manufacturing process of GRC panels consists of two or four consecutive stages, depending on the panel type. The robotized spraying process is controlled by three (3) main modules which are executed sequentially or in parallel, depending on the task. The first module utilizes a common CAD environment with access to information relating to the manufacturing tools and parameters and to the design rules for the product. The off-line module is divided into three different submodules: kinematic control, path planning and task planning.
Reinforced Cage Robot For Concrete Beams And Colums, Purdue Ect Team
Reinforced Cage Robot For Concrete Beams And Colums, Purdue Ect Team
ECT Fact Sheets
The robot or machine, which builds reinforcing cages required for concrete beams and columns, places the longitudinal bars on a jig, then places and ties the hoop reinforcing bars to the longitudinal bars automatically. All the operator must do is turn the machine on, align the hoop bars on the machine, and attach the necessary rigging to the cage for removal after the machine has finished.
Storm Chamber Technology For Storm Water Storage And Gray Water Management And Reuse, Purdue Ect Team
Storm Chamber Technology For Storm Water Storage And Gray Water Management And Reuse, Purdue Ect Team
ECT Fact Sheets
StormChamber™ is an open bottom, arch-shaped, HDPE infiltration chamber which functions in both permeable and non-permeable soils for subsurface retention, detention, recharge and reuse of storm water, or gray water, designed to overcome the deficiencies of other technologies. It provides a higher level of nutrient and pollutant removal by taking advantage of the natural biological and physical properties of the soil. StormChamber™ systems mimic pre-development conditions by putting post-construction run off back into the ground approximately where it used to go, maintaining base flow to streams, wetlands, lakes, ponds and countering salt-water intrusion in coastal areas.
Electro Osmotic Pulse Technology For Prevention Of Water Intrusion In Concrete Structure, Purdue Ect Team
Electro Osmotic Pulse Technology For Prevention Of Water Intrusion In Concrete Structure, Purdue Ect Team
ECT Fact Sheets
Groundwater intrusion into a building can cause serious structural degradation, corrosion of expensive mechanical equipment. ElectroOsmotic Pulse (EOP) technology is based on the concept of electroosmosis; the movement of an electrically charged ion in a liquid under the influence of an external electric field. EOP not only eliminates water-seepage problems from the interior of the structure without excavation, but it further mitigates corrosion damage to mechanical equipment and reduces the interior relative humidity of the basements.
Cable-Based Water Leak Detection Technology, Purdue Ect Team
Cable-Based Water Leak Detection Technology, Purdue Ect Team
ECT Fact Sheets
Water leaks can be considered as a serious problem from many sources such as water supply and return chains, air conditioning units, cold-water chillers, clogged drains, damaged skylights or windows, or even construction errors. The new water leak detection technologies can provide significant advantages in cost, reliability, and easy adoption have continued since the traditional technology mainly focusing on a spot detector revealed several limitations.
Semantic 3d Cad And Its Applications In Construction Industry — An Outlook Of Construction Data Visualization, Zhigang Shen, Raja R. A. Issa, Linxia Gu
Semantic 3d Cad And Its Applications In Construction Industry — An Outlook Of Construction Data Visualization, Zhigang Shen, Raja R. A. Issa, Linxia Gu
Department of Construction Engineering and Management: Faculty Publications
In response to the need of using electronic design data directly in construction management applications, many CAD developers have started implementing semantic data models in their CAD products using industry foundation classes (IFCs). While helpful, these semantic CAD applications have limitations when used in actual construction practices. The case studies in the thesis indicated that: 1) the semantics of the current data model (IFC as an example) is not rich enough to cover the richer details of the real trade practices; 2) the current implementation of the semantic data model lacks the mechanism to provide multiple trades views at various …
Citax: Defining Xml Standards For Data Exchange In The Construction Industry Supply Chain, Alan V. Hore, Roger West
Citax: Defining Xml Standards For Data Exchange In The Construction Industry Supply Chain, Alan V. Hore, Roger West
Conference papers
The current methods of ordering, delivering and invoicing of products in the construction industry is enormously inefficient, with vast quantities of paperwork, duplication of effort, scanning, re-keying and resolving mismatches between invoices, delivery dockets and purchase orders. The purpose of this paper is to introduce the Construction IT Alliance eXchange (CITAX) project and, in particular, to outline the work carried out-to-date by a special interest group within the project. They are seeking to define a universal set of eXtensible Mark-Up Language (XML) message standards that will allow suppliers and contractors to exchange information with each other in supply chain activity. …
Updater™: Mobile Schedule Tracking Software, Purdue Ect Team
Updater™: Mobile Schedule Tracking Software, Purdue Ect Team
ECT Fact Sheets
Virginia Tech and Primavera Systems, Inc. have developed a software interface, called Updater, to enable automatic electronic transport of schedule information between the desktop (DT) schedule and a portable palm-held (PH) computer. The Updater aims at simplifying the process of updating construction schedules, and ultimately improving the consistency and quality of updates. The system employs palm-held computers to eliminate reliance on potentially incomplete or unreliable mental or field notes.
Digital Hardhat System, Purdue Ect Team
Digital Hardhat System, Purdue Ect Team
ECT Fact Sheets
The Digital Hardhat (DHH) is a pen-based personal computer (PC) running a Windows operating system, which is used to collect multimedia information such as text, sound, video, and images. This pen-based computer can also be used to communicate between the construction site and other locations using various connection methods including a wireless network connection, which enables a personnel to roam around the site and video teleconference live with others to solve problems collaboratively.
Paslode - Cordless Finish Nailer, Purdue Ect Team
Paslode - Cordless Finish Nailer, Purdue Ect Team
ECT Fact Sheets
The short length (11.75"), better balance and textured super-grip handles of cordless nailer allow a user to be able to work comfortably in cramped overhead and other hard-to-reach places. The Paslode Impulse IM250 II features patented linear combustion engine that is powered by Impulse fuel cells and rechargeable batteries.
Behavior-Based Safety In Construction, Purdue Ect Team
Behavior-Based Safety In Construction, Purdue Ect Team
ECT Fact Sheets
Behavior-based safety approach that was introduced into the United States in 1930's and has been popular in manufacturing area since 1980's assumes that many of injuries and illnesses are the result of unsafe acts by workers. Behavior-based safety is a proactive approach to increasing safety in the workplace and in the community. It is based on sound, research-based, and behavioral practices, and are easy to use with minimal training.
Safe Excavation, Purdue Ect Team
Safe Excavation, Purdue Ect Team
ECT Fact Sheets
Excavating with a backhoe or similar equipment has the potential risk of hitting an underground utility which could cause serious injuries and expensive damages. An electronic device that provides a real-time warning of the utility lines immediately ahead of the digging tool and provides an easily interpreted, real-time computer readout of the depth, location, and size buried metallic objects. Developed by Dr. Leonhard E. Bernold, it consists of an active metal detector search coil; a signal processing (control) unit; and a PC computer equipped with an analog-to-digital converter interface.
Spraywall, Cured-In-Placed Method For Manhole Rehabilitation, Purdue Ect Team
Spraywall, Cured-In-Placed Method For Manhole Rehabilitation, Purdue Ect Team
ECT Fact Sheets
Manholes and other underground structures commonly account for 25-30 % of infiltration and up to 70% of inflow in sanitary sewer collection systems. These will cause sewer overflow and endanger the nearby environment. SprayWall is a spray-applied, cured-in-place method of construction and is primarily used in manholes. It uses urethane material that provides excellent corrosion resistance. SprayWall is structural and can withstand ground water loads on a long-term basis.
An Industrial Gas Turbine/Compressor Package Designed For Rapid Installation And Commissioning, Purdue Ect Team
An Industrial Gas Turbine/Compressor Package Designed For Rapid Installation And Commissioning, Purdue Ect Team
ECT Fact Sheets
A reduction in both the time and the cost of installation of medium-to-large industrial gas turbine mechanical drive packages can be achieved. Integration of the gas turbine driver, driven equipment, and ancillaries on two easily-assembled skids is made possible by the application of several technological developments, including aeroderivative gas turbine engines, dry gas compressor seals, compact plate-type heat exchangers, variable-speed AC motor drives, and microprocessor-based control systems which are certified for hazardous environments. By minimizing the need for interconnection of piping and wiring between multiple equipment and controls locations, site installation and commissioning time is drastically reduced. This can result …
3d Laser Scanning & Modeling System, Purdue Ect Team
3d Laser Scanning & Modeling System, Purdue Ect Team
ECT Fact Sheets
Traditional methods of measuring and modeling the surface geometry of large, complex structures or sites that require engineering or survey-grade accuracy are often inaccurate, incomplete or expensive. Inaccurate or incomplete drawings and models often lead to costly construction errors or delays. A portable, auto-scanning laser and PC system that lets users economically obtain accurate, complete, and timely as-built geometry information for large structures and sites. The system can remotely measure natural surfaces up to 100m away at the speed of 800 points per second. With spacing between adjacent points as fine as 1mm, users can capture an extremely high level …
Conductive Concrete, Purdue Ect Team
Conductive Concrete, Purdue Ect Team
ECT Fact Sheets
Concrete has been used for many years as a composite material that has excellent mechanical properties and durability for construction. However, concrete is a poor electrical conductor, especially under dry conditions. Traditional methods can warm roads, but installation cost is high and the procedure is complicated. A research team in Material Laboratory of Institute for Research in Construction, National Research Council Canada, led by Dr. James J. Beaudoin, has developed a new conductive concrete with both superior electrical conductivity and mechanical properties.