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Pedestrian bridge partially collapses in Detroit

A pedestrian bridge in Detroit partially collapsed on March 27, 2020. The structure is located at Interstate-94 (I-94) near Townsend Avenue. The bridge was impacted by a truck early in the morning an...

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New technique to erect a bridge applied in Austria

A new technique to erect a bridge was applied for the first time in Austria. The new method, known as the balanced lowering technique, was developed at the Technical University of Vienna (TU Wien). T...

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Keller helps Neste - a global leader in renewable products- towards a greener future

As the world looks to meet growing demand for low-carbon energy sources, Neste – a global leader in renewable products – is investing S$2.2 billion (€1.4 billion) to increase biofuel production in Si...

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World's most frightening bridges to cross: Part 2

Bridges have been part of engineering features since ancient times. Through the ages, their design and capabilities evolved and can currently span across challenging and rough terrains. Following the...

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World's most frightening bridges to cross: Part 1

Bridges are structures that enable crossings over physical barriers including rivers, valleys and canyons. They were developed early in human history along with the introduction of first civilization...

Industry Section

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Oil, gas and chemical solutions by Keller

Planned LNG (liquefied natural gas) storage facilities may require ground improvement to increase soil bearing capacity and control settlement, deep foundations to transfer loads to competent bearing...

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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...

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...