Structural integrity and failure in the context of Climate hazards

A funeral is a ceremony connected with the final disposition of a corpse, such as a burial or cremation, with the attendant observances. Funerary customs comprise the complex of beliefs and practices used by a culture to remember and respect the dead, from interment, to various monuments, prayers, and rituals undertaken in their honour. Customs vary between cultures and religious groups. For a dedicated overview of contemporary Australian practices, see Funeral rituals and trends in Australia. Funerals have both normative and legal components. Common secular motivations for funerals include mourning the deceased, celebrating their life, and offering support and sympathy to the bereaved; additionally, funerals may have religious aspects that are intended to help the soul of the deceased reach the afterlife, resurrection or reincarnation.

The funeral usually includes a ritual through which the corpse receives a final disposition. Depending on culture and religion, these can involve either the destruction of the body (for example, by cremation, sky burial, decomposition, disintegration or dissolution) or its preservation (for example, by mummification). Differing beliefs about cleanliness and the relationship between body and soul are reflected in funerary practices. A memorial service (service of remembrance or celebration of life) is a funerary ceremony that is performed without the remains of the deceased person. In both a closed casket funeral and a memorial service, photos of the deceased representing stages of life would be displayed on an altar. Relatives or friends would give out eulogies in both services as well.

The World Trade Center, in Lower Manhattan, New York City, was destroyed after a series of terrorist attacks on September 11, 2001, killing almost 3,000 people at the site. Two commercial airliners hijacked by al-Qaeda members were deliberately flown into the complex's Twin Towers, at the time among the five tallest buildings in the world. The plane impacts dealt significant structural damage to the skyscrapers and started large fires in the towers, eventually resulting in both undergoing a total progressive collapse.

The North Tower (WTC 1) was the first building to be hit when American Airlines Flight 11 crashed into it at 8:46 a.m., causing it to collapse at 10:28 a.m. after burning for one hour and 42 minutes. At 9:03 a.m., the South Tower (WTC 2) was struck by United Airlines Flight 175; it collapsed at 9:59 a.m. after burning for 56 minutes.

A hazard is a potential source of harm. Substances, events, or circumstances can constitute hazards when their nature would potentially allow them to cause damage to health, life, property, or any other interest of value. The probability of that harm being realized in a specific incident, combined with the magnitude of potential harm, make up its risk. This term is often used synonymously in colloquial speech.

Hazards can be classified in several ways which are not mutually exclusive. They can be classified by causing actor (for example, natural or anthropogenic), by physical nature (e.g. biological or chemical) or by type of damage (e.g., health hazard or environmental hazard). Examples of natural disasters with highly harmful impacts on a society are floods, droughts, earthquakes, tropical cyclones, lightning strikes, volcanic activity and wildfires. Technological and anthropogenic hazards include, for example, structural collapses, transport accidents, accidental or intentional explosions, and release of toxic materials.

Self-healing materials are artificial or synthetically created substances that have the built-in ability to automatically repair damages to themselves without any external diagnosis of the problem or human intervention. Generally, materials will degrade over time due to fatigue, environmental conditions, or damage incurred during operation. Cracks and other types of damage on a microscopic level have been shown to change thermal, electrical, and acoustical properties of materials, and the propagation of cracks can lead to eventual failure of the material. In general, cracks are hard to detect at an early stage, and manual intervention is required for periodic inspections and repairs. In contrast, self-healing materials counter degradation through the initiation of a repair mechanism that responds to the micro-damage. Some self-healing materials are classed as smart structures, and can adapt to various environmental conditions according to their sensing and actuation properties.

Although the most common types of self-healing materials are polymers or elastomers, self-healing covers all classes of materials, including metals, ceramics, and cementitious materials. Healing mechanisms vary from an instrinsic repair of the material to the addition of a repair agent contained in a microscopic vessel. For a material to be strictly defined as autonomously self-healing, it is necessary that the healing process occurs without human intervention. Self-healing polymers may, however, activate in response to an external stimulus (light, temperature change, etc.) to initiate the healing processes.

A plastic bottle is a bottle constructed from high-density or low-density plastic. They are typically used to store liquids such as water, soft drinks, motor oil, cooking oil, medicine, shampoo or milk. They range from very small bottles to large carboys. Consumer blow molded containers often have integral handles or are shaped to facilitate grasping.

Plastic was invented in the nineteenth century and was originally used to replace common materials such as ivory, rubber, and shellac. Plastic bottles were first used commercially in 1947, but remained relatively expensive until the early 1950s, when high-density polyethylene was introduced. They quickly became popular with manufacturers and customers because, compared to glass bottles, they are lighter, cheaper and easier to transport. However, their greatest advantage over glass bottles is their superior resistance to breakage, in both production and transportation. Except for wine and beer, the food industry internationally has largely replaced glass bottles with plastic bottles.

Earthquake engineering is an interdisciplinary branch of engineering that designs and analyzes structures, such as buildings and bridges, with earthquakes in mind. Its overall goal is to make such structures more resistant to earthquakes. An earthquake (or seismic) engineer aims to construct structures that will not be damaged in minor shaking and will avoid serious damage or collapse in a major earthquake. A properly engineered structure does not necessarily have to be extremely strong or expensive. It has to be properly designed to withstand the seismic effects while sustaining an acceptable level of damage.

In materials science, creep (sometimes called cold flow) is the tendency of a solid material to undergo slow deformation while subject to persistent mechanical stresses. It can occur as a result of long-term exposure to high levels of stress that are still below the yield strength of the material. Creep is more severe in materials that are subjected to heat for long periods and generally increases as they near their melting point.

The rate of deformation is a function of the material's properties, exposure time, exposure temperature and the applied structural load. Depending on the magnitude of the applied stress and its duration, the deformation may become so large that a component can no longer perform its function – for example creep of a turbine blade could cause the blade to contact the casing, resulting in the failure of the blade. Creep is usually of concern to engineers and metallurgists when evaluating components that operate under high stresses or high temperatures. Creep is a deformation mechanism that may or may not constitute a failure mode. For example, moderate creep in concrete is sometimes welcomed because it relieves tensile stresses that might otherwise lead to cracking.

The Rana Plaza collapse (also referred to as the Savar building collapse) occurred on 24 April 2013 in Savar Upazila, near Dhaka, Bangladesh, when the eight-story Rana Plaza commercial building collapsed due to a structural failure. The search for survivors lasted for 19 days and ended on 13 May 2013, with a confirmed death toll of 1,134. Approximately 2,500 injured people were rescued from the building. It is considered to be one of the deadliest structural failures in modern human history, as well as the deadliest garment-factory disaster in history, and is the deadliest industrial accident in the history of Bangladesh. Amnesty International called it "the most shocking recent example of business-related human rights abuse."

The building housed five garment factories, a bank, and apartments. It was constructed in 2006 on the site of a former pond, and was built without proper permits. The fifth through eighth floors were added onto the building without supporting walls; the heavy equipment from the garment factories was more than the structure could support. On 23 April 2013, large cracks were discovered in the building. The shops and the bank on the lower floors immediately closed, but the garment factory owners on the upper floors ignored the warnings and the workers returned to work the following day. On 24 April, the building collapsed at 9:00 am local time, trapping thousands of people inside.

A funeral is a ceremony connected with the final disposition of a corpse, such as a burial, entombment or cremation with the attendant observances. Funerary customs comprise the complex of beliefs and practices used by a culture to remember and respect the dead, from interment, to various monuments, prayers, and rituals undertaken in their honour. Customs vary between cultures and religious groups. For a dedicated overview of contemporary Australian practices, see Funeral rituals and trends in Australia. Funerals have both normative and legal components. Common secular motivations for funerals include mourning the deceased, celebrating their life, and offering support and sympathy to the bereaved; additionally, funerals may have religious aspects that are intended to help the soul of the deceased reach the afterlife, resurrection or reincarnation.

The funeral usually includes a ritual through which the corpse receives a final disposition. Depending on culture and religion, these can involve either the destruction of the body (for example, by cremation, sky burial, decomposition, disintegration or dissolution) or its preservation (for example, by mummification). Differing beliefs about cleanliness and the relationship between body and soul are reflected in funerary practices. A memorial service (service of remembrance or celebration of life) is a funerary ceremony that is performed without the remains of the deceased person. In both a closed casket funeral and a memorial service, photos of the deceased representing stages of life would be displayed on an altar. Relatives or friends would give out eulogies in both services as well.