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Improving weak soils with columns of compacted crushed concrete

Keller’s committed to reducing its impact on the environment by offering clients more sustainable solutions wherever possible. Improving weak soils with columns of compacted crushed concrete, recycle...

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Keller cuts project carbon emissions by more than 90%

As the world’s largest geotechnical company, Keller wants to lead the sector in offering products and solutions that contribute towards a more sustainable future. One example of this is in Singapore,...

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A unique in-tunnel grouting project by Keller at Merbourne's Metro Tunnel

After months of careful design planning and on-site expertise, Keller has successfully completed a unique in-tunnel grouting project for one of Melbourne’s highest profile programs – the Metro Tunnel...

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Forensic engineering attempts to find causes of Mexico City metro bridge collapse

Forensic assessment of the causes behind the deadly collapse of Line 12 rail bridge in Mexico City is under way. The accident, which occurred near the Olivos station in the working-class neighb...

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Novel remote sensing monitoring program of bridges in Australia

The governmental authorities of Victoria in Australia are planning to deploy a remote structural health monitoring program for bridges. The program will be a joint venture between the Australian go...

Industry Section

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Keller's Neutrogel®: A new cheaper and greener grouting material

A new grouting material called Neutrogel® that has minimal impact on soil and groundwater, a much lower carbon footprint and lower costs, has been successfully used on a Keller project for the first...

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Keller sets standard on UAE rail project

Keller is leading the way for ground-improvement works on the largest infrastructure project in the United Arab Emirates. A major new rail network that will create new connections among the nation’s...

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Keller expands local presence in Montreal, Quebec

Keller announced a new office in Montreal, Quebec, following an agreement to acquire the local TreviGroup assets. The acquisition furthers Keller’s commitment to the Quebec and Eastern Canadian marke...

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Keller's water treatment expertise helps DC project

While Keller is renowned throughout the world for its wide range of geotechnical solutions, perhaps less well-known is its expertise in groundwater behavior and decontamination. A good example of thi...

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SkyCiv Releases new Excel Plugin

In structural engineering, the power of Excel, especially in conjunction with macros, is renowned for its accessibility, flexibility, and computing power. The new SkyCiv for Excel Plugin breaks ne...

Editor's Pick

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India demolishes skyscrapers that infringed environmental regulations

Officials decided to demolish 2 skyscrapers in India as they did not comply with the existing environmental codes. The skyscrapers were located in the municipality of Maradu, in the Kerala state of...

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Education

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Maximum Factored Vertical Shear

A simply supported beam (Figure) with a span of L=20ft is subjected to a uniform service load of 1200 lb/ft, including self weight, and a live load of 900 lb/ft. Determine the maximum factored...

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Flexular Crack in Concrete Beam

For the simply supported beam of Figure 1, determine the uniformly distributed load, q, at which the flexural crack forms. The beam has a length L=7m, and f’c=25Mpa. Figure 1: Cross-section of Con...

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Calculate the vertical deflection of a beam

Calculate the vertical deflection of the beam (magnitude and direction) at the midpoint of the central span (point A) Solution Use virtual work method: Virtual Structure From Equilibrium: Shea...

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Truss vs Cable

Truss and cable elements are defined by their ability to carry solely axial loads. Nonetheless, since cables have no stiffness when loaded in compression, they function only in tension. Moreover,...

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Spring Assemblies in Series/Parallel: Two Springs in Series

Based on Figure 1, we get: where: In matrix form, the above can be re-written as: Example Figure 2: Two Springs in Series - Example  Calculate k1, δ2, and f3. Solution Ba...

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Calculate the variation in length of the rod

The rod of the picture is loaded with the force 2P which is uniformly distributed on Section D where applied. If the material of the rod is homogenous with Elastic Modulus E find the variation in len...

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Allowable shear force of the girder

Calculate the maximum allowable shear force Vmax for the girder. The welded steel girder is having the cross section shown in the figure. It is fabricated of two 500 mm x 50 mm flange plates and a 50...

Books

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Structural Engineering Solved Problems

Structural Engineering Solved Problems contains 100 practice problems representing a broad range of topics on the Structural Engineering (SE) and Civil PE exams. Each problem provides an opportunity t...

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Structural Depth Reference Manual for the Civil PE Exam, Fourth Edition

The Structural Depth Reference Manual prepares you for the structural depth section of the Civil PE exam. It provides a concise, yet comprehensive review of the structural depth section exam topics an...

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Structural Depth Practice Exams for the Civil PE Exam

Structural Depth Practice Exams contains two 40-problem, multiple-choice exams consistent with the NCEES Civil PE structural depth exam's format and specifications. Like the actual exam, the problems...