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Cross-section diagram of three hills, with two saddles marked by X. • There are three peaks (Schartenhöhe) or prominences shown labeled 'A', 'B', & 'C'. • The diagram illustrates the topographic isolation (German: Dominanz)-the distance from a prominence which is also a minimum to the point of the same height.
Parallel keys are the most widely used. They have a square or rectangular cross-section. Square keys are used for smaller shafts and rectangular faced keys are used for shaft diameters over 6.5 in (170 mm) or when the wall thickness of the mating hub is an issue.
[5] [7]: 18 Early American locomotives had bar frames, made from steel bar; in the 20th century they usually had cast steel frames or, in the final decades of steam locomotive design, a cast steel locomotive bed – a one-piece steel casting for the entire locomotive frame, cylinders, valve chests, steam pipes, and smokebox saddle, all as a ...
A typical cross-section drawing of a roadway. For centuries, until the 1970s, all engineering drawing was done manually by using pencil and pen on paper or other substrate (e.g., vellum , mylar ). Since the advent of computer-aided design (CAD), engineering drawing has been done more and more in the electronic medium with each passing decade.
The rail profile is the cross sectional shape of a railway rail, perpendicular to its length. Early rails were made of wood, cast iron or wrought iron. All modern rails are hot rolled steel with a cross section approximate to an I-beam, but asymmetric about a horizontal axis (however see grooved rail below). The head is profiled to resist wear ...
The water tank sits on top of the boiler like a saddle sits atop a horse. [5] Usually, the tank is curved in cross-section, although in some cases there were straight sides surmounted by a curve (like an inverted 'U'), or even an ogee shape (a concave arc flowing into a convex arc). [7] Walter Nielson patented the saddle tank arrangement in ...
A plane containing a cross-section of the solid may be referred to as a cutting plane. The shape of the cross-section of a solid may depend upon the orientation of the cutting plane to the solid. For instance, while all the cross-sections of a ball are disks, [2] the cross-sections of a cube depend on how the cutting plane is related to the ...
Multiview and sectional view drawings Y14.31–2008: Undimensioned drawings Y14.36M–1996: Surface texture symbols Y14.38–2007: Abbreviations and acronyms for use on drawings and related documents Y14.4M–1989: Pictorial drawing Y14.41–2003: Digital product definition data practices Y14.42–2002: Digital approval systems Y14.5–2018