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The international roughness index (IRI) is the roughness index most commonly obtained from measured longitudinal road profiles. It is calculated using a quarter-car vehicle math model, whose response is accumulated to yield a roughness index with units of slope (in/mi, m/km, etc.). [1][2] Although a universal term, IRI is calculated per ...
Roads in India are an important mode of transport in India. India has a network of over 6,331,791 kilometres (3,934,393 mi) of roads (as of 31 December 2022 [update]). This is the second-largest road network in the world, after the United States. [ 2 ] At (1.94 km, 1.21 mi) of roads per square kilometre of land, the quantitative density of ...
Pavement condition index. The pavement condition index (PCI) is a numerical index between 0 and 100, which is used to indicate the general condition of a pavement section. The PCI is widely used in transportation civil engineering [1] and asset management, and many municipalities use it to measure the performance of their road infrastructure ...
irc.nic.in. Indian Roads Congress is the premier technical body of highway engineers which was formed in 1934 as India's national body for laying down and designing standards for roads and highway construction and provides a stage for exchanging expertise and latest research developments relating to it.
A falling weight deflectometer (FWD) is a testing device used by civil engineers to evaluate the physical properties of pavement in highways, local roads, airport pavements, harbor areas, railway tracks and elsewhere. The data acquired from FWDs is primarily used to estimate pavement structural capacity, to facilitate overlay design or ...
morth.nic.in. The Ministry of Road Transport and Highways (MoRTH) is a ministry of the Government of India, that is the apex body for formulation and administration of the rules, regulations and laws relating to road transport, transport research and in also to increase the mobility and efficiency of the road transport system in India.
The first cloverleaf interchange patented in the US was by Arthur Hale, a civil engineer in Maryland, on February 29, 1916. [3] [4]A modified cloverleaf, with the adjacent ramps joined into a single two-way road, was planned in 1927 for the interchange between Lake Shore Drive and Irving Park Road in Chicago, Illinois, but a diamond interchange was built instead.
The International Rescue Committee (IRC) is a global humanitarian aid, relief, and development nongovernmental organization. [3] Founded in 1933 as the International Relief Association, at the request of Albert Einstein, and changing its name in 1942 after amalgamating with the similar Emergency Rescue Committee, the IRC provides emergency aid and long-term assistance to refugees and those ...