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Bridge inspection using drone technology by NCDOT

Setting one more example of the expanding use of drone technology for infrastructure monitoring, the North Carolina Department of Transportation authorized and performed inspection of the Marc Basnig...

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Leslie E. Robertson (1928-2021) - Renowned Structural Engineer of World Trade Center

A decorated figure within the Structural Engineering profession, Leslie ‘Les’ Robertson passed away, aged 92, on February 11th 2021 in San Mateo, California. Robertson, who pioneered the structura...

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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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Parking garage partially collapses in downtown Lexington

A parking garage partially collapsed in downtown Lexington, Kentucky, early Thursday February 18th. The collapsed structure is located at South Mill and West High streets. The local fire depart...

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Construction of Europe-Asia “1915 Çanakkale Bridge” continues

Turkey’s 4th connecting bridge between Europe and Asia is expected to be completed on March 2022. The project is named after the 1915 Gallipoli World War I naval battle, an important historical e...

Industry Section

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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...

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Keller performs its first O-pile project in Canada

Keller, world’s leader in geotechnical solutions, announces the completion of its first interlocking pipe pile (O-pile) system for Alamos Island Gold Mine in Dubreuilville, Ontario. When the Gold Min...

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Keller expands local presence with new offices in Portland and Birmingham

Keller, North America's leader in geotechnical construction, announces the opening of new offices in Portland, OR, and Birmingham, AL.The new offices will help further Keller’s growth with an expande...

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Keller's cliff stabilization scheme for Scarborough Spa

Keller helped provide a solution to stabilize a cliff face and protect an iconic building in North Yorkshire, UK. The historic building is known as the Scarborough Spa. It is a Grade II listed buildi...

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Keller Ranks #1 on Excavation and Foundation firms for 2020 ENR

This is Keller’s second year holding #1 position, while prior to 2019, this position was held by Keller company Hayward Baker for years. Keller’s geotechnical and foundation companies combined into a...

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...