ASME RT-1 pdf free download

ASME RT-1 pdf free download Safety Standard for Structural Requirements for Light Rail Vehicles and Streetcars
light rail vehicle (LRV): vehicle that operates LRVs operate on a light rail transit system, and is are not part of mainline railroads. Light rail vehicles are capable of boarding and discharging passengers at track/street level or elevated curbs and platforms.
The light rail vehicle is a mode of rail transit characterized by its ability to operate on exclusive rights-of-way, shared street running, and through roadway grade crossings. (see also streetcar). occupied volume: the volume of the light rail vehicle or streetcar where passengers or crewmembers are normally located during service operation, such as the operating cab and passenger seating and standing areas. The entire width of a vehicle’s end compartment that contains a control stand is an occupied volume.
An articulation or gangway is typically not considered occupied unless there are seats. override: the behavior of end-to-end colliding vehicles such that one vehicle vertically rides above the other resulting in unintended crush deformations. Overriding can lead to telescoping intrusion of car-modules.
(a) a plastic finite element analysis (FEA) for the relevant load case shows the affected areas to be small within 1% plastic strain.
(b) the overall structure does not take a permanent set beyond its initial dimensions.
(c) the structure continues to function as designed to meet the requirements of this Standard.
imple moving average: an arithmetic mean over a prescribed block of time or for a set number of digital data points, sequentially applied over a digital data set. Given a sequence of N data points, an n-point moving average is a new data sequence, defined by computing the arithmetic means of n-point blocks. (New) streetcar: a category of transit vehicle similar to LRV that operates mainly at street level in road traffic, typically operating up to normally as single units or two units per train and at a maximum speed of 70 km/h (44 mph).
Vehicles are typically smaller, lighter, and narrower in width than light rail vehicles. structural sheathing: the parts, if any, of the exterior covering of the carbody that are used as structural components of the vehicle and included in the stress analysis. structural shelf (light rail): the structural member in the end frame that spans the full width of the carbody and is attached to the tops of the collision posts and to the corner posts below the window sill, which is, and designed to transmit the collision post top reaction loads to the carbody sides.
survival volume: the portion volume of the occupied volume vehicle body containing the occupants that shall be preserved is maintained during the collision and that is sufficient for their survival without major injury. telescoping: the intrusion of one vehicle into another in a collision.
train: one or more vehicles coupled together. ultimate strength: the maximum load-carrying capability of a structure, for a load applied at a specified location and direction. For further deformation of the structure, the load capable of being supported will be less than this maximum load.vehicle vertical load: a force due to gravity acting on the vehicle. The following vehicle vertical loads apply to this Standard:
(a) ready-to-run load: the weight of a vehicle that is service ready with all mounted components, including full operating reserves of lubricants, windshield fluid, etc., but without any crew or passenger load.
(b) seated load: ready-to-run load plus the crew and all passenger seats occupied with average weight per person of 79.5 kg (175 lb). 1
(c) carbody car volume capacity load: a seated load plus all available standee areas occupied with a standee density that results in a floor pressure of 488.4 kg/m 2 (100 lb/ft 2 ). 1