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Simple split-rail fence Log fence with double posts (photo taken in 1938). A split-rail fence, log fence, or buck-and-rail fence (also historically known as a Virginia, zigzag, worm, snake or snake-rail fence due to its meandering layout) is a type of fence constructed in the United States and Canada, and is made out of timber logs, usually split lengthwise into rails and typically used for ...
In a simple suspension bridge the deck lies on the main cables In a suspended deck bridge the deck is carried below the main cables by vertical "suspenders" Comparison of a catenary (black dotted curve) and a parabola (red solid curve) with the same span and sag. The catenary represents the profile of a simple suspension bridge, or the cable of ...
Slip gate pier with unusual groove shapes. Slip gate pier with notches for gate spars. Quite apart from the farmers own needs for movement of stock, machines and people between fields and access from roads, lanes etc. it was also a requirement for those using rights of way that gates and stiles whilst being stock proof do not "..present troublesome hindrances to passage." [7] The width of the ...
Reconstruction of a palisade in a Celtic village at St Fagans National History Museum, Wales Reconstruction of a medieval palisade in Germany. A palisade, sometimes called a stakewall or a paling, is typically a row of closely placed, high vertical standing tree trunks or wooden or iron stakes used as a fence for enclosure or as a defensive wall.
Tapsel gate at St Simon and St Jude church, East Dean. Tapsel gates are made of wood and are balanced on a solid wooden or metal pivot, instead of being hinged on one side. [2] [3] They can be opened easily, in either direction, with a small push; they therefore are much easier to negotiate than more typical gates. Common problems of side ...
Timber design or wood design is a subcategory of structural engineering that focuses on the engineering of wood structures. Timber is classified by tree species (e.g., southern pine, douglas fir, etc.) and its strength is graded using numerous coefficients that correspond to the number of knots, the moisture content, the temperature, the grain ...