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Building moisture problems are a common and often costly issue that can lead to structural damage, health concerns, and reduced indoor comfort. Moisture problems can manifest at virtually any location within a building, including floors, walls and ceilings. Problems with floor moisture have several common reasons. These include problems with ventilation, groundwater seepage, plumbing leaks […]
Cracks are commonly found in most buildings. A crack can be defined as a separation or fracture in a material, resulting from stress that exceeds the material’s capacity to resist it. This definition applies broadly, from microscopic cracks in metals or hairline fractures in concrete, to wide and obvious separations in wood, concrete, drywall or […]
Frost heave is a potential cause of building damage in colder climates. It occurs when water in the soil beneath or around a building’s foundations freezes and expands. This problem is more severe in soils that permits capillary action, such as silts and clays. When temperatures drop sufficiently, water in the soil freezes. If conditions […]
Strain is a concept in structural engineering that describes how a material deforms when subjected to stress. While stress refers to the internal forces acting within a material, strain measures the resulting change in shape relative to the material’s original dimensions. It is a dimensionless unit, typically expressed as change in length divided by the […]
Within structural engineering, stress refers to the internal forces that develop within materials as they are subjected to loads. It is a fundamental concept that determines how much load a component can support. Structural engineers evaluate, at least by inspection, every component within a structure to ensure that it can withstand the expected forces without […]
Stiffness is a fundamental concept in structural engineering that describes a structure’s ability to resist deformation under applied loads. Unlike strength, which expresses a material’s capacity to withstand failure, stiffness governs how much a structure will deflect or change shape when subjected to forces. Structural engineers consider stiffness to ensure that buildings, bridges, and other […]
Tributary area is a fundamental concept in structural engineering. It is used to determine how loads are distributed across structural elements such as beams, columns, and slabs. The term refers to the portion of an area that contributes load to a specific structural member. The accurate determination of tributary area is essential for calculating weights […]
A structural load path describes how forces travel from where they are applied to a structure to the ground. Understanding this concept is essential in engineering because it describes how all loads—from weight, wind, or seismic forces—are safely transferred through the structure into the ground without causing failure. Every structure, from a small house to […]
In structural engineering design and analysis, the term deflection means that movement expected in a member under its expected loads. Structural loads are not carried without some degree of deflection. In other words, structural components must deform slightly to engage internal stresses and develop resistance. Without this deformation or deflection, load transfer does not occur. […]
Shear is not a difficult concept. Imagine holding a stick with two fists close together. Now, with both hands gripping the stick tightly, move one hand forward while keeping the other still. The force you just applied on the stick is called shear. In beam design, the points of maximum shear are often, but not […]
