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Structural Design of Corbels

A corbel is a very short structural cantilever member projecting from a wall or a column for the purpose of carrying loads. In reinforced...

Lapping of Reinforcements and Use of Rebar Couplers – Peculiarities and Differences

In reinforced concrete buildings, it is almost impossible to carry out construction without lapping reinforcements at one point or another. This is due to...

The Role of Compression Steel in Deflection of Reinforced Concrete Structures

Deflection is one of the most important serviceability limit state criteria in the design of reinforced concrete structures. Excessive deflection in a structure can...

Engineers React to Large Span Cantilever Slab Construction

A structural engineer posted a picture of a large cantilever slab construction on LinkedIn, and so many reactions have followed the picture due to...

Cracking Due to Edge Restraint and Early Thermal Effects in Concrete

Crack width is calculated by multiplying the crack inducing strain by the crack spacing (i.e. the movement over a length equal to the crack...

Coefficient of Thermal Expansion of Concrete

Coefficient of thermal expansion is defined as the change in unit length per degree of temperature change. In a concrete element, it is therefore...

Restraint and Restraint Factors of Concrete

If movement (expansion and/or contraction) is restricted within a young concrete element, tensile stresses will develop which will lead to cracking. This restriction to...

Cracking in Concrete

Eurocode recognises that cracking is normal in concrete subjected to bending, shear, torsion, and restraint from movement (clause 7.3.1 EN 1992 1-1). Cracking is...

Crack Width and Crack Spacing Calculation in Concrete

Cracking occurs in concrete when the restrained strain exceeds the tensile strain capacity of the concrete. In critical elements like water retaining structures, crack...

Minimum Area of Steel for Imposed Deformation Cracking

Minimum reinforcement is provided to ensure that yielding does not occur, and by so doing, cracking is adequately controlled in a concrete section. The...

Deep Learning can be used to Detect Cracks in Fire Damaged Structures

Researchers from Ewha Womans University, Seoul, South Korea, have proposed a machine learning technique for detecting surface cracks on fire damaged concrete. Even though...

Important checklists before casting concrete on site

Concreting or casting days are usually big days for site engineers. It is very typical to see engineers and project managers work very hard...

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Guidelines for Tying of Reinforcement

In the construction of reinforced concrete structures, reinforcement bars must be tied together in order to hold them in place and to also facilitate...

Cost of Reinforcement Works in Nigeria

Installation of reinforcements is an important item of work in the construction of reinforced concrete structures. The cost of reinforcement works therefore significantly impacts...

Design of Shear Walls

Shear walls are structural members that provide additional lateral stiffness to a building by resisting shear, moment, and axial forces, which are produced due...

Technical Guide: Detailing and Arrangement of Beam Reinforcements on Site

Beams are horizontal structural elements used for supporting lateral loads. In conventional reinforced concrete structures, beams usually receive load from the floor slab, but...
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