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Engineering Reference Materials for Bridge Schematic
  • FEA builds better bridges

    Recent bridge failures have shoved bridge design and analysis to the forefront. Engineers historically "overdesigned " bridges using substantial margins of safety to compensate for unknown forces that could affect a structure over time. To help ensure future bridges will be economical, as well

  • Why bridges fail

    The failure of the I-35W bridge in Minneapolis and the ceiling collapse of Boston's Big Dig tunnel have generated a lot of discussion about what causes major structural elements to just disintegrate. The origin of the I-35W disaster won't be known for some time, but history holds lessens about

  • Incheon Bridge

    The Icheon Grand Bridge is South Korea's longest spanning cable-stayed bridge and the fifth largest in the world. The bridge was opened in October 2009 and connects Incheon Airport to Songdo. Fibox enclosure products are being used to control bridge safety applications.

  • The Star Bridge

    The star bridge, as an analysis tool, is a very useful representation of the. Wheatstone bridge the latter used in virtually all strain gage load cells. It affords the opportunity to make numerous calculations in a simpler. manner than when dealing with the same calculations on the Wheatstone

  • Bridge Circuits

    In control applications, operational power supplies are alternatives to other sources, ranging from simple SCR bridges used in electric drills to elaborate servoamps. The benefits of operational power supplies in these situations are high precision and moderate cost. The easiest way to understand

  • Don't Burn Your Bridges

    that "bridge " technologies such as barcodes, digital watermarks and alphanumeric labels will remain important for the near term. Companies that have already invested in barcoding certainly haven 't wasted any of their time. No doubt, you 're painfully aware of RFID 's promise, yet equally aware

  
Discussions about Bridge Schematic
  • Re: Grid Connected PV System

    dear umer i am an automation engineer ,after the googling i got the information which i will like to share with you. Operating a renewable energy system in parallel with an electric grid requires special grid-interactive orgrid tie inverters (GTI). The power processing circuits of a GTI are simil...

  • Consistent Blown Fuses

    CONSISTENT BLOWN FUSES I am tasked to repair a PCB card for an old transducer box without the schematic diagram. Problem: The fast blow 1A fuse in the card keeps blowing off. After tracing part of the circuitry on the card, I deduced that it was a power supply card with two dc outputs,...

  • Re: Universal Stepper Driver

    First, you are mixing terms in ways that prove that you do not understand what you are doing. To drive one coil with a true H bridge topology requires four transistors as can be seen here. [To see where this schematic came from just click on the schematic.] This circuit is for driving a single coil...

  • Re: Tmote for PWM

    Thanks for the responses. I'm trying to get some working knowledge of this, and every place I look either shows an h-bridge some hobbyist made, or h-bridge schematics. So, I could output an analog voltage signal from the mote, and the h-bridge would use that signal? Can I use encod...

  • Re: Grid-Tie Inverter Design

    Hello, I'm building a grid-tie inverter of my own. I have yet to prototype the unit but if the specs of the components I'm using on my design are any indicator, my unit shall have the following specs... Voltage = 120VAC Peak Apparent Power = 2400VA Peak Current = 20A Duty =...

  • Re: Transformers Connected In Series

    Your description is fuzzy. A schematic would be a lot better. A rectangular shape from a full bridge? I would expect DC. Are the transformers in series to increase the voltage rating? the power rating? Are they designed for 8kHz? Were the outer secondaries measured? How much voltage was applied to t...

  
News about Bridge Schematic
  • Construction Week: Mexico State Utility Bids $9.8B In Energy Work; SNC-Lavalin Lands Bridge Job

    Canada Bridge Contract Award To SNC-Lavalin, ACS Finalized

  • Thousands Gather in Portland as Oregon Eases Into Legal Weed

    Thousands gather on Portland bridge as Oregon eases into era of legal marijuana

  • One Year Anniversary of the Minneapolis Bridge Collapse - Where are we?

    Today marks the one year anniversary of the I-35 W Bridge collapse in Minneapolis, MN, when thirteen people lost their lives when the structurally deficient bridge tumbled into the Mississippi River. While the bridge has been replaced in record time, and work on Capitol Hill is underway to fix the nation’s deficient bridges, the problem is far from solved.   Immediately following the collapse, Rep. James Oberstar of Minnesota and Chairman of the House Transportation and Infrastructure Committee, introduced the National Highway Bridge Reconstruction and Inspection Act (H.R. 3999) to provide $1 billion for immediate re-inspection of deficient bridges and to introduce new technologies into bridge inspection and monitoring. All good things. ASCE supports the legislation and advocated for its passage, which just happened last week. On the Senate side, Sen. Amy Klobuchar, also of Minnesota, just introduced the companion bill which will hopefully make it through the process quickly.   Despite the bill’s progress, bad news came in the form of a recent report from the American Association of State Highway and Transportation Officials (AASHTO). The report, "Bridging the Gap: Restoring and Repairing the Nation''s Bridges" pegs the cost of fixing the nation’s deficient bridges at a staggering $140 billion. Beyond just the cost, AASHTO advises better monitoring of deficient bridges, better public education on the risks and needs, and a stronger federal role in the rehabilitation of the nation’s aging transportation network – not just its bridges.   The 2005 Report Card for America’s Infrastructure graded the nation’s bridges at a "C" – one of the highest grades for any of the categories, and since that time, the percent of structurally deficient or functionally obsolete bridges has actually declined. It’s hard to believe that despite those facts, we experienced such a catastrophic failure. It’s true, events like the I-35 W collapse are rare, but they demonstrate the risks of an aging and inadequately maintained national infrastructure. If something that was doing the best fell apart so badly, what are the consequences of the next failure?   For more information on the state of the nation’s bridges, CBS Evening News did a great story last night. Watch it here. 

  • New concrete used to increase bridge life span

    Purdue University research is enabling Indiana to improve bridges in the state with a new "internally cured" high-performance concrete.

  • Portworx Raises $8.5M for Docker-Enabled Storage

    The company emerges from stealth to help enterprises bridge the gap between Docker and storage infrastructures.

  
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Product Announcements for Bridge Schematic
RDP Electrosense
Submersible Transducers Monitor Bridges

RDP Electrosense offers a full line of LVDTs that are ideal for monitoring bridges. They are used to measure movements and strain in the structures caused by the increased weight and volume of traffic, environmental conditions, and other factors. This data helps engineers understand the movements and loads imposed on the bridges and the supporting structures in order to predict potential problems and to maximize the safe working life of the bridge. The LVDT monitoring approach is relatively...

North Hills Signal Processing Corporation
Longitudinal Balance Measurement Bridges

LBB Series- Longitudinal Balance Measurement Bridges. Series LBB Longitudinal Balance Bridges are designed measure balance to ground of balanced systems, cables and components per ITU-T Recommendation O.9. *North Hills Application Note 156 - "Measurement of Conversion Loss in Balanced Systems" provides further information on the subject of Balance to Ground and techniques for its measurement. Interfaced with a 50 ohm or 75 ohm Network Analyzer, LBB bridges measure the ratio of a common mode...

RDP Electrosense
RDP Transducers Monitor Bridges in all Weather

RDP Transducers Monitor Bridges in all Weather. RDP's LVDT Displacement Transducers are frequently used to measure movements in the structure of bridges caused by the weight of traffic, environmental conditions and other factors. Higher traffic loads and corrosion can lead to increased strain in bridge components, such as suspension cable fixing points. It is important for engineers to understand movements and loads imposed on the structure in order to predict potential problems and to maximise...