5,208 articles
Impact damper
An impact damper is a passive vibration-control device in which a free mass moving between stops collides with the structure, dissipating energy as heat and noise.
Impeller
An impeller is the rotating, vaned component of a pump, compressor, or water turbine that transfers energy from the drive shaft to a fluid, raising its velocity and pressure.
Imperial Canal (California–Mexico)
The Imperial Canal, also known as the Alamo Canal, was a gravity-diversion canal built in 1900 and 1901 to bring Colorado River water into California's Imperial Valley.
Imperial Hotel, Tokyo
The Imperial Hotel, Tokyo (帝国ホテル東京) is a luxury hotel in Hibiya, Tokyo, established in 1890 as Japan's guest house and known for its Frank Lloyd Wright building of 1923.
Imperial Irrigation District
The Imperial Irrigation District is a publicly chartered irrigation and electric utility in Imperial County, California, formed in 1911 and the largest single user of Colorado River water.
Imperial Palace, Tokyo
The Imperial Palace, Tokyo (Kōkyo), is the residence of the Emperor of Japan, built on the site of Edo Castle and home to the Emperor since 1868.
Implenia
Implenia is a Swiss construction and real estate company formed in 2006 by the merger of Batigroup and Zschokke, specializing in large-scale tunnelling and underground works.
Impregilo
Impregilo S.p.A. was an Italian construction and civil engineering company headquartered in Milan, formed by merger in 1994, known for dams and metros worldwide, and renamed Salini Impregilo in 2014.
In situ chemical oxidation
In situ chemical oxidation (ISCO) is a groundwater remediation method that injects oxidants such as permanganate, persulfate, hydrogen peroxide, or ozone to destroy organic contaminants in place, without excavation.
Inca rope bridge
An Inca rope bridge was a suspension bridge made entirely of braided plant fiber, built by the Inca Empire to cross the deep gorges and fast rivers of the Andes.
Incheon Bridge
The Incheon Bridge (인천대교) is a 21.38 km toll crossing in Incheon, South Korea, linking Songdo International Business District with Yeongjongdo Island, home of Incheon International Airport, opened in 2009.
Incremental dynamic analysis
Incremental dynamic analysis (IDA) is a structural engineering method introduced by Vamvatsikos and Cornell in 2001 that assesses seismic performance and collapse capacity by scaling ground-motion records to increasing intensities.
Incremental launch
Incremental launch is a bridge construction method in which superstructure segments are cast behind an abutment and jacked over the piers, developed in the early 1960s.
Independence Hall
Independence Hall is a historic brick building in Philadelphia, built as the Pennsylvania State House, where the Declaration of Independence and the Constitution were debated and signed.
Indian Institute of Architects
The Indian Institute of Architects (IIA) is the national professional body of architects in India, founded in 1917, headquartered in Mumbai, with more than 20,000 members.
Indira Gandhi Canal (इंदिरा गांधी नहर)
The Indira Gandhi Canal (इंदिरा गांधी नहर), originally the Rajasthan Canal, is one of India's largest canal systems, carrying Ravi and Beas water across the Thar Desert for irrigation.
Indirect potable reuse
Indirect potable reuse (IPR) is the planned addition of purified recycled wastewater to a drinking water supply through an environmental buffer such as an aquifer or reservoir.
Indo-Islamic architecture
Indo-Islamic architecture, also called Islamic architecture in India, fused Islamic arches and domes with Indian traditions, formative under the Delhi Sultanate and refined by the Mughals.
Indus Basin Irrigation System
The Indus Basin Irrigation System (IBIS) is Pakistan's network of dams, barrages, and canals diverting Indus River water to farmland, the world's largest contiguous irrigation system.
Industrial Canal
The Industrial Canal, officially the Inner Harbor Navigation Canal (IHNC), is a 5.5-mile waterway in New Orleans connecting Lake Pontchartrain to the Mississippi River, breached during Hurricane Katrina in 2005.
Industrial Canal Lock
The Industrial Canal Lock, formally the Inner Harbor Navigation Canal Lock, is a 1923 navigation lock in New Orleans linking the Mississippi River to the Gulf Intracoastal Waterway.
Industrial heritage
Industrial heritage is the remains of industrial culture of historical, technological, social, architectural, or scientific value, from mines and factories to workers' housing, studied through industrial archaeology.
Industrial wastewater treatment
Industrial wastewater treatment, or an effluent treatment plant, is the physical, chemical, and biological treatment of water from industrial facilities, treated on site or at municipal plants.
Industry Foundation Classes
Industry Foundation Classes (IFC) is an open data model describing objects, properties, and relationships in buildings and infrastructure, published by buildingSMART International as ISO 16739.
Infinite slope analysis
Infinite slope analysis is a limit equilibrium method in geotechnical engineering for assessing shallow translational landslides, treating the slope as infinitely long with a planar failure surface.
Influence line
An influence line is a structural analysis graph showing how a response at one fixed point changes as a unit load moves across a structure.
Infrared and thermal testing
Infrared and thermal testing, commonly called infrared thermography (IRT), is a nondestructive evaluation method that locates defects like delaminations and voids from surface temperature variations captured by an infrared camera.
Infrastructure
Infrastructure is the system of basic physical facilities, equipment, and organizations that delivers essential services such as transport, energy, water, sanitation, and communications to a society.
Infrastructure asset management
Infrastructure asset management (IAM) is the systematic process by which organizations operate, maintain, and upgrade physical infrastructure like roads, bridges, and pipelines to deliver service at acceptable cost.
Inga dams
The Inga dams are hydroelectric power stations, Inga I and Inga II, on the Congo River at Inga Falls in the Democratic Republic of the Congo.