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A skew arch (also known as an oblique arch) is a method of construction that enables an arch bridge to span an obstacle at some angle other than a right angle. This results in the faces of the arch not being perpendicular to its abutments and its plan view being a parallelogram , rather than the rectangle that is the plan view of a regular, or ...
a "multi context" plan, which is drawn with many contexts on it to show relationships between these features as part of some phase, or; alternatively a single context plan with a single feature is drawn . Excavated features are drawn in three dimensions with the help of drawing conventions such as hachures.
An architectural drawing or architect's drawing is a technical drawing of a building (or building project) that falls within the definition of architecture.Architectural drawings are used by architects and others for a number of purposes: to develop a design idea into a coherent proposal, to communicate ideas and concepts, to convince clients of the merits of a design, to assist a building ...
A structural drawing, a type of engineering drawing, is a plan or set of plans and details for how a building or other structure will be built. Structural drawings are generally prepared by registered professional engineers, and based on information provided by architectural drawings. The structural drawings are primarily concerned with the ...
Skidding on frozen ground. In winter, two oxen were enough to pull a large log on a sled. For a long time, harvesting in winter was the preferred option for a variety of reasons. Skidding to rivers was often done in winter on frozen ground. Floating was established in spring, when rivers were swollen withmeltwater, and in summer.
A slip tongue log skidder used in the 19th and early 20th centuries Elements of a skidding harness. A skidder is any type of heavy vehicle used in a logging operation for pulling cut trees out of a forest in a process called "skidding", in which the logs are transported from the cutting site to a landing.
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A log bridge is a timber bridge that uses logs [1] that fall naturally or are intentionally felled or placed across streams. The first man-made bridges with significant span were probably intentionally felled trees .
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