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The leaning tower of...Dallas

A former Affiliated Computer Services building in Dallas "refused" to collapse during demolition works. Now, it is known as the "Leaning Tower of Dallas". On February 16, 2020, a demolition was condu...

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Pier partial collapse during construction works in England

Part of the Clacton Pier located in the town of Clacton-on-Sea, Essex County, southeast England, collapsed during construction works. The Pier is accountable for Clacton being one of the top seaside...

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Wall collapse in New York’s demolition site: 1 fatality

A wall failure in a New York’s demolition site resulted in one fatality and one injury. The construction accident occurred in Queens, a municipality in New York, on February 20, 2020. The victims we...

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Measures to prevent bridge closures due to snow accumulation

Bridge closures associated with snow accumulation have become common incidents. As the phenomenon is exacerbated in cable-stayed structures, a question that arises is whether there is a solution to t...

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Judge orders 20 floors to be removed from skyscraper in New York

According to a court order, at least 20 floors of a building, currently under construction in New York City, must be removed. The decision was issued by a State Supreme Court judge on February 13, 2...

Industry Section

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Keller Poland participated in the expansion of one of Europe’s busiest ports

Keller Poland has completed its first marine combi-wall project in Gdansk Port, Poland, helping with the expansion of one of Europe's busiest ports. Gdansk port on the southern side of the Baltic Sea...

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Keller completed earth retention and foundation works in challenging soil profiles for a luxury aged care facility

The growth in demand for aged care facilities in Australia has led to an increase in private developers entering the market. One such developer is Oryx Communities, which is building luxury aged care...

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North American Keller's Companies joined together as KELLER

As of January 1, 2020, North America Keller companies Bencor, Case Atlantic, Case Foundation, Hayward Baker, HJ Foundation, Keller Canada, McKinney Drilling and Moretrench have joined togeth...

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Keller 141 Harley Street underground project

Keller UK handled the design and construction of the 141 Harley Street project in London, UK. Keller's specialist restricted access team designed and constructed a 73 linear meter secant piled reta...

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Keller returns to Egypt for the second phase of PVD project

Following the installation of more than 82.5 million meters of PVDs (Prefabricated Vertical Drains) in a vast industrial area near the city of Port Said in Egypt, Keller returns for the second phase o...

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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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...

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Average shear stress in pressure vessel

A pressure-vessel head is fabricated by gluing the circular plate to the end of the vessel. If the vessel sustains an internal pressure of 500 kPa, determine the average shear stress in the glue. S...

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Temperature Change

The beam is fixed at end B and free at end A. It is loaded at end A with the concentrated force 4F. At the same time there is a temperature change ΔT. Calculate the length change Δx. (Modulus of elast...

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Calculate angular velocity, angular acceleration

The angular velocity of the circle is defined by the equation ω=3t2+2 rad/sec where t in sec. Determine the magnitudes of the velocity and acceleration of point B on the circle of 1m diameter when t=1...

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How to calculate yield strength

The stress-strain diagram for a steel rod is shown and can be described by the equation ε=0.20(1e-06)σ+0.20(1e-12)σ3 where s in kPa. Determine the yield strength assuming a 0.5% offset.  Solut...

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Calculate the Maximum Shear Stress

A steel bar with diameter d = 14 mm is subjected to a tensile load P = 10 kN (see figure). (a) What is the maximum normal stress σmax in the bar? (b) What is the maximum shear stress τmax? Solution...

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Calculate the Axial Forces of the Truss Members

Find the axial forces of the members 2-3, 9-3 of the truss for the given loads.   Solution From the equilibrium of the forces on the truss we have: ΣFx = 0 -> H1 = 0 ΣM1 = 0 -...

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...