All About Air Duct Cleaning
Duct Cleaning Twin Cities (612) 412-1867 - With time, most heating, ventilation as well as air-conditioning (HVAC) systems will probably accumulate an intern...
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air duct cleaning may 27
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air duct cleaning may 27 - Video
may 28 air duct cleaning
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Retaining wall design skp animation
Retaining wall using railway sleepers.
By: Mark Wilson
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Retaining wall design skp animation - Video
Artifice Mini Decks by Ellusionist - MagicNevin Product Promo
By Ellusionist Super Cute - The Artifice Mini Decks have arrived! At just 6.6cm x 4.6cm x 2cm the Artifice Mini Decks have incredible potential for card magi...
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Decks In Newark Delaware
Decks In Newark Delaware Get Decked Inc 610-948-1625 https://plus.google.com/115958394266447691648 Decks In Newark Delaware Get Decked has actually created decks in NY, NJ, MD, DE, and PA....
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Decks In Newark Delaware - Video
Hearthstone Journey to Legend is Complete! Here are my Decks!
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Hearthstone Journey to Legend is Complete! Here are my Decks! - Video
Boston, MA (PRWEB) May 31, 2014
Infrasense, Inc., a national leader in infrastructure nondestructive evaluations, recently carried out subsurface investigations for 34 bridge decks, representing nearly 250,000 square feet, throughout Ohio's District 1 region. The subsurface investigations were performed using vehicle-mounted high-speed ground penetrating radar (GPR) to scan the bridge decks and their approach slabs. Visual underside inspections were performed to supplement the GPR results. These tests provide a condition assessment of the reinforced concrete bridge decks without requiring lane closures and with no disruption to traffic flow.
Ground penetrating radar (GPR) data is collected at highway speeds to estimate rebar depth, corrosion conditions and deteriorated concrete. The GPR data is collected in a series of lines spaced 3 feet transversely across the width of the deck, with each line representing a cross sectional slice of the deck at a particular offset. Decks in good condition consist of strong and uniform radar reflections from the rebar. GPR data with weak and inconsistent reflections indicate rebar-level deterioration in the bridge deck. Infrasense uses its own proprietary software to analyze and map this data to provide comprehensive results for its clients.
A 2012 study carried out by an independent consultant for MnDOT evaluated the accuracy of Infrasense's GPR results provided to the Minnesota DOT. The study compared the predicted quantities for 12 decks surveyed by Infrasense against subsequent construction repair quantities. The study found that, on average, Infrasenses predicted deterioration quantities were within 3.2 % of the documented construction quantities.
Ground penetrating radar surveys provide transportation agencies with accurate and comprehensive bridge deck condition information, enabling effective preservation, rehabilitation, and replacement decisions. With large bridge deck inventories, highway agencies have primarily relied on visual inspection at the network level. Since the mechanisms of deterioration occur below the surface, their manifestations are not readily seen in the visual inspections. As a result, visual deck assessments are often inaccurate, and do not provide a sound basis for planning repair and rehabilitation.
Traditionally, highway agencies have employed sounding (chain or hammer) to identify delaminated areas for project-level rehab. Although sounding has proven reliable, the labor and closures required for a sounding survey makes it prohibitive for obtaining data of a large number of decks. Also, sounding is not effective when there is an asphalt overlay. In response to these limitations, a number of highway agencies, including ODOT, have utilized alternative methods such as ground penetrating radar.
About Infrasense, Inc.
Since 1987, Infrasense, Inc. has applied state-of-the-art technologies to address the most difficult challenges in subsurface scanning. Infrasenses engineers are able to nondestructively extract critical information from a diverse range of structures. In addition to providing ongoing subsurface evaluation services to clients across the country, the firm has also conducted numerous research programs to advance the field of subsurface detection and non-destructive evaluation.
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Infrasense Scans 34 Decks in Southwest Ohio Using GPR
Bathroom remodelation and mold remediation
Bathromm from scratch.
By: Andrea Stewart
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Bathroom remodelation and mold remediation - Video
Flood Damage Services Austin Tx|512-592-7722
24/7 Property Cleaning Restoration provides Local Flood Damage, Water removal, Mold remediation, Fire Smoke damage cleaning services in Austin Texas. * Direct Insurance Billing FREE...
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