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Slip gates are a form of gate which permits people and vehicles through an entrance but which blocks the passage of animals. Branches or worked wood crossbars or stangs were used, one field slip gate pier with L-shaped grooves and the opposing stile gatepost with square or circular concavities to receive the three or four horizontal crossbars.
Batter boards (or battre boards, Sometimes mispronounced as "battle boads") are temporary frames, set beyond the corners of a planned foundation at precise elevations. These batter boards [ 1 ] are then used to hold layout lines (construction twine) to indicate the limits [ 2 ] (edges and corners) of the foundation.
The posts are then placed upright into the ground and concrete is poured to cement them into place. Once they are set, the horizontal rails are affixed to the posts using fasteners, and finally the pickets can be attached to the horizontal rails. By far the most time-consuming part of installing a picket fence is setting the posts.
Woven wire fencing, many designs, from fine chicken wire to heavy mesh "sheep fence" or "ring fence" Welded wire mesh fence; Wood-panel fencing, whereby finished wood planks are arranged to make large solid panels, which are then suspended between posts, making an almost completely solid wall-like barrier. Usually as a decorative perimeter.
A finished tilt-up building. Tilt-up, tilt-slab or tilt-wall is a type of building and a construction technique using concrete.Though it is a cost-effective technique with a shorter completion time, [1] poor performance in earthquakes has mandated significant seismic retrofit requirements in older buildings.
A portal frame steel building under construction. Portal frame is a construction technique where vertical supports are connected to horizontal beams or trusses via fixed joints with designed-in moment-resisting capacity. [1] The result is wide spans and open floors. Portal frame structures can be constructed using a variety of materials and ...
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Building support structures, no matter what materials are used, have to give accurate and safe results. A structure depends less on the weight and stiffness of a material and more on its geometry for stability. [2] Whatever the condition is, a specific rigidity is necessary for connection designs.
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