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Articles 91 - 120 of 229
Full-Text Articles in Engineering
Osterberg Load Cell, Purdue Ect Team
Osterberg Load Cell, Purdue Ect Team
ECT Fact Sheets
Establishing the bearing capacity of piles, piers, and shafts is difficult and expensive for engineers to determine. The Osterberg Load Cell allows geotechnical engineers to determine the capacity of drilled shafts, piers, and driven piles. It is used to test for the bearing and skin friction forces that can be developed in the soil through which the shaft, pier, or pile is placed.
Kwik-Kap Metal Roof Fastener Seals, Purdue Ect Team
Kwik-Kap Metal Roof Fastener Seals, Purdue Ect Team
ECT Fact Sheets
Metal roof leaks cause damage to insulation and energy loss, structural damage that deteriorates supporting beams and damage to building contents. The major cause of metal roof leaks is fastener movement. The Kwik-Kap is an aluminum faced conforming disc with a heavy modified asphalt base. This proven material has survived more than 100,000 cycles with no signs of cracking or other failure.
Mortarless Concrete Blocks, Purdue Ect Team
Mortarless Concrete Blocks, Purdue Ect Team
ECT Fact Sheets
Traditional concrete block systems are expensive to construct, not as structurally sound as concrete walls, and do not have the ability to conceal any mechanical or electrical systems easily. The Intralock System is a mortarless concrete block building system comprised of blocks with six different internal configuration that form three separate air cores when stacked in a single thickness.
Autoclaved Aerated Concrete, Purdue Ect Team
Autoclaved Aerated Concrete, Purdue Ect Team
ECT Fact Sheets
High energy costs, increasingly expensive construction labor and equipment, and a higher environmental consciousness of home owners, has forced home builders to search for new construction materials. Autoclaved Aerated Concrete (AAC) is well known as an environmentally friendly construction material. Compared to the energy consumed in production of many other basic building materials, only a fraction is required to produce AAC. Raw material consumption is very low for the amount of finished product produced.
High Performance Steel, Purdue Ect Team
High Performance Steel, Purdue Ect Team
ECT Fact Sheets
High strength steels have been available for years, but their use required more welding control and fabrication processes than conventional strength steels. A new grade of high performance steel, HPS-485W or HPS-70W, developed by a cooperative program between the Federal Highway Administration, the American Iron and Steel Institute, and the Department of the Navy in August 1994; uses a new chemical composition that provides improved welding and toughness properties.
Tru-Frame Steel Truss, Purdue Ect Team
Tru-Frame Steel Truss, Purdue Ect Team
ECT Fact Sheets
After earthquakes, repair and replacement of structural elements is time consuming and expensive. This new truss system contains several diagonal elements designed to absorb seismic energy and yield at prescribed levels. Standard moment frame design requires 100% visual inspection and ultrasonic testing which is eliminated when using the Tru-Frame system. Since all Tru-Frame connections are single pass fillet welds and tension control bolts, they can be visually inspected any time after completion without need for additional testing. This allows subsequent trades to start their work sooner.
Post-Tensioned Steel Structure, Purdue Ect Team
Post-Tensioned Steel Structure, Purdue Ect Team
ECT Fact Sheets
Welded steel Moment-Resisting Frames (MRFs) were long considered as one the most earthquake-resistant types of structures. Recently, the idea of applying the post-tensioning technology to achieve moment resistant structural systems has been investigated at the University of California, San Diego. Since 1996, moment-resisting connections using post-tensioning concepts have been developed and tested for precast concrete beam-to-column connections, and concrete shear walls.
Attachment Of Steel Decking Using Mechanical Fasteners And Powder Actuated Or Pneumatic Tools, Purdue Ect Team
Attachment Of Steel Decking Using Mechanical Fasteners And Powder Actuated Or Pneumatic Tools, Purdue Ect Team
ECT Fact Sheets
An alternative method of attaching steel metal decks onto open web bar joist or structural steel beams. Erectors require a fast, reliable, efficient fastening method that can be used independent of weather conditions, and is easy, cost effective and verifiable. Attachment of the deck panels has historically been performed using puddle welding, with self-drilling screws used only when necessary. Today, special nails, driven either by powder propellant (powder actuated tools) or by compressed air (pneumatic tools), are experiencing ever-increasing usage due to the speed, versatility and cost-effectiveness benefits derived by the installer and owner.
Friction Pendulum™ - Seismic Isolation Bearings, Purdue Ect Team
Friction Pendulum™ - Seismic Isolation Bearings, Purdue Ect Team
ECT Fact Sheets
Recent large earthquakes in Turkey, Taiwan, and Japan have wreaked terrible destruction in highly urbanized areas. Preventing such tragic loss of life and damage to society's infrastructure is the aim of Friction PendulumTM seismic isolation bearings, a technology developed with the support of the National Science Foundation's (NSF) Small Business Innovation Research (SBIR) program.
Bridge Lock-Up Device System, Purdue Ect Team
Bridge Lock-Up Device System, Purdue Ect Team
ECT Fact Sheets
The Colebrand Lock-up Device (LUD) provides additional substructure strength to resist seismic forces as a structural shock transmission unit for highway bridges. This system can provide a temporary rigid link between bridge structural members under seismic, braking, or other fast-acting type loads, while permitting slow thermal movements.
Precast Concrete Beam-To-Column Connection System, Purdue Ect Team
Precast Concrete Beam-To-Column Connection System, Purdue Ect Team
ECT Fact Sheets
Compared to conventional concrete constructions, precast concrete is a better option which is more cost-effective for production, transport, and erection when columns and beams can be fabricated independently. The BSF connection is a hidden beam and connection for gravity loads that eliminates the need for projecting column corbels. From a steel box cast into the concrete beam end, a sliding steel “knife” plate with a safety notch is cantilevered into a steel box that has been cast into the concrete column.
Atlss Beam-To-Column Connections, Purdue Ect Team
Atlss Beam-To-Column Connections, Purdue Ect Team
ECT Fact Sheets
The ATLSS Connection (AC) is a new beam-to-column connection consisting of a tenon, which is bolted and welded to the end of the beam, and a mortise, which is attached to the column and into which the tenon is dropped. It is safer, easier, and faster to erect and fit-up than traditional beam-to-column connections.
Precast Hybrid Moment Resistant Frames, Purdue Ect Team
Precast Hybrid Moment Resistant Frames, Purdue Ect Team
ECT Fact Sheets
The recent disasters from earthquakes in Northridge, California and Kobe, Japan, demands a structural design that will provide integrity of the structure and protection of the investment against seismic activity. Charles Pankow builders developed a new frame that absorbs seismic energy independent of the integrity of the structural members and that delivers superior post elastic response. The Precast Hybrid Moment Resisting Frame (PHMRF) involves a column/beam connection utilizing both elastic and inelastic action at the joint for Precast Moment Resistant Frames.
Sewer Scanner And Evaluation Technology (Sset), Purdue Ect Team
Sewer Scanner And Evaluation Technology (Sset), Purdue Ect Team
ECT Fact Sheets
The investment in sanitary sewer collection system represent a major component of $20 trillion of U.S. investment in civil infrastructure systems. Sewer Scanner and Evaluation Technology (SSET) will overcome weaknesses of the closed circuit television and provide the engineer with more and higher quality information for rehabilitation decision making process by utilizing optical scanner and gyroscope technology.
Smart Sewer Assessment Systems, Purdue Ect Team
Smart Sewer Assessment Systems, Purdue Ect Team
ECT Fact Sheets
The need for accurate preventive assessment of sewer conditions is increasing world wide. The new method utilizes qualified inspection systems that are automated and that utilize artificial intelligence to assess whether or not a crack in the surface of the pipe exists. The KARO system is one example. Developed by the German Federal Ministry of Education, Science, Research, and Technology (BMBF) and four partners from both industry and research institutions. This system is composed of a mobile control and surveillance station, and a mobile robot.
Pipe Bursting, Purdue Ect Team
Pipe Bursting, Purdue Ect Team
ECT Fact Sheets
Pipe bursting can be used to replace pipes without using open trench methods. Pipe bursting is accomplished by pulling a bursting device through the existing pipe. This device by virtue of its size or its radial expansion ability (depending on the type) shatters the old pipe and forces the fragments into the surrounding soil. The new pipe is usually attached to the bursting device and is thus pulled into place as the device advances.
Pipe Structural Reliability Evaluating System, Purdue Ect Team
Pipe Structural Reliability Evaluating System, Purdue Ect Team
ECT Fact Sheets
The MAC system (Mecanique d'Auscultation des Conduites, i.e., buried pipelines mechanical inspection) is an integrated mechanical-electronic system that inspects different kinds of pipes (reinforced concrete, plain concrete, masonry, and clay) from 0.7 to 4.0 m in diameter. The system assesses the reliability of the pipe by analyzing the pipe-soil interactive structural behavior.
Cured In Place Pipe Repair, Purdue Ect Team
Cured In Place Pipe Repair, Purdue Ect Team
ECT Fact Sheets
Insituform Technologies Inc. offers a pipe lining system called Paltem which uses a woven synthetic fiber covered with a polyester elastomer as the lining material. This system is used to rehabilitate pressure pipelines that have been damaged by corrosion or are experiencing leakage through joints, pinholes or other pipe defects.
Grp Cable Trays, Purdue Ect Team
Grp Cable Trays, Purdue Ect Team
ECT Fact Sheets
The Glass-fibre Reinforced Plastic is a material consisting of: fibreglass fabric and/or glass or aramid fibre (a synthetic fibre with high mechanical resistance) bound together by a thermohardening resin which has been suitably polymerized (polyester, epoxy, acrylic or phenolic). With this technology known as "Pultrusion", it is possible to combine the mentioned range of fibres with the resin in such a way as to obtain the required mechanical characteristics, which may vary in different parts of the same profile or be uniform throughout.
Procurezone.Com, Purdue Ect Team
Procurezone.Com, Purdue Ect Team
ECT Fact Sheets
TProcureZone.com is a comprehensive procurement system. On-line functions include: estimating the cost of a purchase; preparing and issuing detailed specifications and complete requests for proposals; requesting bids from selected suppliers; communicating with bidders; receiving, comparing, and evaluating bids; negotiating offers and conducting auctions; issuing purchase orders with all required attachments; making payment; and monitoring schedules and deliveries.
Primecontract.Com, Purdue Ect Team
Primecontract.Com, Purdue Ect Team
ECT Fact Sheets
The PrimeContract.com network is based on a three-tier software architecture using JAVA in a UNIX environment. The network is designed to effortlessly accommodate large numbers of users in an extremely secure environment.
Isqft Agc Network, Purdue Ect Team
Isqft Agc Network, Purdue Ect Team
ECT Fact Sheets
The plan room services that AGC (Associated General Contractors) chapters provide to their membership can be time consuming and costly due to traveling to a physical plan room. iSqFt enables AGC members to conveniently view plan room projects 24 hours a day, seven days a week from the member’s home or office location via the internet.
Akamai Streaming, Purdue Ect Team
Akamai Streaming, Purdue Ect Team
ECT Fact Sheets
Akamai offers world-class streaming media services that enable Internet content providers and enterprises to succeed in today's Web-centric marketplace. They deliver live event Webcasts (complete with video production, encoding, and signal acquisition services), streaming media on demand, 24/7 Webcasts and a variety of streaming application services based upon their EdgeAdvantage.
Polycom.Viavideo - Video Conferencing, Purdue Ect Team
Polycom.Viavideo - Video Conferencing, Purdue Ect Team
ECT Fact Sheets
As the construction industry is more globalized and competitive than other industry, it needs faster interaction to enable real-time collaboration, application sharing between the headquarter and construction sites. USB based video system, the ViaVideo video communications appliance combines the power of a high-quality camera and multimedia processor for improved video communications.
Builder Supplynet - Online Trading Community, Purdue Ect Team
Builder Supplynet - Online Trading Community, Purdue Ect Team
ECT Fact Sheets
The online, virtual trade community can simplify constructions firms’ business processes by providing enhanced marketing, bidding, communication and commerce. Builder SupplyNet is hosted at UUNET™, providing services with a direct connection to the UUNET backbone capacity network. Builder SupplyNet's technology was developed by Microstate, Inc. The Hamilton Software interfaces with SQL databases and enables real-time editing of members' pages and data.
Mimio - Digital Technology For White Boards, Purdue Ect Team
Mimio - Digital Technology For White Boards, Purdue Ect Team
ECT Fact Sheets
mimio is a unique collaboration tool that captures everything user write or draw on a whiteboard, in color and real time -- and then transmits the information directly into user's computer. User can then revise, print, share, export to HTML, or drag-and-drop user's whiteboard notes into any Windows application.
Bid Express - Online Bidding With Digital Sign, Purdue Ect Team
Bid Express - Online Bidding With Digital Sign, Purdue Ect Team
ECT Fact Sheets
Bidx.com offers a solution to the government agencies’ need for a more efficient and more accurate bidding process. The Bid Express service saves bidders the time needed for preparing bids on paper, and the travel time and expense involved in attending bid meetings and submitting bids in person. This valuable service allows bidders to quickly scan all current bid opportunities to find exactly what they are seeking.
Evoke Communications, Purdue Ect Team
Evoke Communications, Purdue Ect Team
ECT Fact Sheets
Using Evoke Webconferencing technology, users can avoid expensive long distance rates by having participants listen in over the Web - using only their standard Internet connection and browser.
Agc's Online Institute, Purdue Ect Team
Agc's Online Institute, Purdue Ect Team
ECT Fact Sheets
Increasing construction volume and maintaining quality and profits are difficult tasks when qualified new employees are expensive and hard to find. The Associated General Contractors of America (AGC) understands that demand for the information far exceeded the ability to offer personal instruction of the course material. After extensive testing of various distance learning techniques, it was concluded that an Internet-based program offered the ideal solution.
Constructw@Re.Com, Purdue Ect Team
Constructw@Re.Com, Purdue Ect Team
ECT Fact Sheets
Unlike document management, bid solicitation, or messaging systems alone, Constructw@re reduces the inherent risks associated with complex projects by merging the most project- essential elements into a single solution that helps organizations manage the entire life cycle of construction projects, from pre-bid to completion.