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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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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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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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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...

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Jet Grouting Project by Keller on Brooklyn Bridge Manhattan Approach Arches

Keller team is working on the iconic Brooklyn Bridge in New York City, using jet grouting to rehabilitate the Manhattan approach arches. Mobilization began in May 2020 and production is expected to f...

Industry Section

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SkyCiv Releases a new Structural Design and Analysis API

SkyCiv is excited to announce the official launch of their Structural Design and Analysis API. The API gives SkyCiv users a new way to access analysis, modelling and design calculations, making it po...

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13,500 bored piles on a groundbreaking oil refinery project

Keller has delivered one of its largest projects, constructing 13,500 bored piles for the development of a groundbreaking oil refinery in Rajasthan. The project that Keller is involved in will be one...

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Applying ground freezing in major New York tunnel project

Keller applied ground freezing in the largest infrastructure project ever conducted in Suffolk County, New York. Keller is one of the few companies in North America to offer ground freezing technique...

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SkyCiv Engineering release new Mobile App

SkyCiv is excited to announce the new release of its new Structural Engineering Mobile App, featuring a number of helpful tools and access to a model viewer to review and share models. SkyCiv is rela...

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Keller is taking a lead role on a Miami transport project

Keller will participate in a Miami project in which, for the first time in 50 years, auger cast piles will be utilized. The $800 million Signature Bridge is part of a major regeneration plan in Miam...

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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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...

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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...

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...