shear wall

Major Techniques for Modeling Shear Walls

Modeling Shear Walls Modeling shear walls have changes during the last two decades. Analyses techniques have moved from linear static to nonlinear dynamic, enabling more realistic modeling and simulations. Different approaches for modeling shear walls span from macro models such as modified beam-column elements, to micro models such as 3D finite element models. An appropriate modeling Read more about Major Techniques for Modeling Shear Walls[…]

Challenges in Corrosion Mapping with GPR

Ground penetrating radar (GPR) is primarily used in subsurface scanning of concrete and soil medium. It is used to: Locate rebar in concrete Predict thickness of concrete Location of delamination and voids However, corrosion mapping with GPR remains a very challenging topic; in fact, scholars and technicians involved in GPR scanning of concrete have different Read more about Challenges in Corrosion Mapping with GPR[…]

Why and When to Use Concrete Piles?

Piles and drilled shafts are an important category of foundations. Despite their relatively high cost, they become necessary when we want to transfer the loads of a a heavy superstructure (bridge, high rise building, etc.) to the lower layers of soil. Another reason for choosing a pile foundation is the condition and quality of soil layers. Read more about Why and When to Use Concrete Piles?[…]

Deficient Shear Walls

Deficient Concrete Shear Walls

Reinforced concrete shear wall structures constructed in the 1970’s or earlier suffer from a number of deficiencies in design and detailing. This is around the time when seismic provisions emerged in the design codes, and changed the traditional strength-based design philosophy (EVOLUTION OF DESIGN CODES). In this article, we will briefly review common problems with deficient Read more about Deficient Concrete Shear Walls[…]

Design of Concrete Shear Walls

Concrete Shear Walls Reinforced concrete (RC) shear walls have long been recognized as suitable structural systems, providing both lateral resistance and drift control in RC buildings. However older shear walls were typically designed mainly for combined actions of gravity loads and wind loading with no special seismic load consideration. Seismic provisions were only introduces in Read more about Design of Concrete Shear Walls[…]

Patch Repair

Patch Repair: Dos and Don’ts

What happens when the patch repair is only done in damaged area?  When a corrosion sign and rust stain appear on the concrete surface, it is the time to do something in order to stop corrosion propagation. Depending on corrosion type and propagation, the required intervention and precautionary measure are adopted. The remedial action may Read more about Patch Repair: Dos and Don’ts[…]