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The American Society of Civil Engineers (or ASCE) specified rail profiles in 1893 [20] for 5 lb/yd (2.5 kg/m) increments from 40 to 100 lb/yd (19.8 to 49.6 kg/m). Height of rail equaled width of foot for each ASCE tee-rail weight; and the profiles specified fixed proportion of weight in head, web and foot of 42%, 21% and 37%, respectively.
These include simple rail adhesion, rack railways and cable inclines (including rail mounted water tanks to carry barges). To help with braking on the descent, a non-load-bearing "brake rail" located between the running rails can be used, similar to the rail used in the Fell system, e.g. by the Snaefell Mountain Railway on the Isle of Man.
Over time, rail may become too wide or too narrow. In North America and most of the world, standard gauge is 4 ft 8 + 1 ⁄ 2 in (1,435 mm). Rail profile – Looks for rail wear and deviations from standard profile. Warp – The maximum change in crosslevel over a predetermined chord length (generally sixty-two feet). [10]
The reconvened ASCE met at the Chamber of Commerce of the State of New York until 1875 when the society moved to 4 East 23rd Street. The ASCE moved again in 1877 to 104 East 20th Street and in 1881 to 127 East 23rd Street. [10]: 2–3 [8] The ASCE commissioned a new headquarters at 220 West 57th Street in 1895.
Mairie de Loevenich (), from the Topographic Survey of the Rhineland by Tranchot/Müffling, sheet 57 (published 1806/07).. A map series is a group of topographic or thematic charts or maps usually having the same scale and cartographic specifications, and with each sheet appropriately identified by its publisher as belonging to the same series.
An index fund's rules of construction clearly identify the type of companies suitable for the fund. The most commonly known index fund in the United States, the S&P 500 Index Fund, is based on the rules established by S&P Dow Jones Indices for their S&P 500 Index. Equity index funds would include groups of stocks with similar characteristics ...
RailTopoModel is a systemic data model for describing the topology-based railway infrastructure as needed by various applications. The RailTopoModel has been initially developed under patronage of the International Union of Railways (UIC) and was released as International Railway Standard (IRS) 30100 in April 2016. [1]
The Basic Rail Transportation Infrastructure Index (BRTI Index) is a synthetic measure combining rail transportation metrics (existence of modern rail networks and average speed of main inter-urban itineraries) and cost efficiency observations, used as an indicator a country’s relative development in modern land transportation. [1]