Palisade

Palisades are 20-30 cm thick, 3-4 m long, up partially tapered piles. They are about 1 m deep dug as a barrier means at intervals of 6-8 cm in the art of fortification and connected to earth through a ground sill, at the upper end by a nailed bar. The word from the French word palissade solved since the late 16th century increasingly the hitherto equally significant word " bulwark " (ie planks plant) from.

Long before picket served fortification purposes, they were pure approach obstacles, as well Chevaux de Fries which protected in the sense of Temenos cult place before profane or access from outside view.

Later, starting with the Bronze Age, they should cover against enemy fire and simplify their own defense. They sat three woods close to each other and then left a gap of 8 to 10 cm, which was filled to the stopper height by a weaker Brustpalisade.

To cover against fire was poured against the palisade from the outside to the prominence of earth from a V-shaped ditch, made ​​it difficult at the same time the use of nicks from the outside. Defensive palisades one turned to the end of the throat open field works in the local defense, and even in the open field in the shape of round, so-called tambour about to cover individual field guards against attack by cavalry. In the Orient, one often on local fortifications, which form the outer palisades parapet slope and embankment is banked up behind it, the so-called Palanke.

Palisades in landscaping

Since the 1970s, palisades are used in landscaping. They are used mostly by intercepting embankments or smaller slopes and / or the bedding or edging paths. Rare is the use as a freestanding wall, for example as a screen. In the installed state, such " walls " is usually not higher than 2-3 m.

As palisades pressure treated round timber, round and square concrete and natural stone mullions are generally used. An optimal way of fixing in the ground is through the use of lean concrete.

Previously, with coal tar ( Carbolineum ) were happy impregnated wooden sleepers used out of the railway operations. However, you may no longer be used because of their carcinogenic effect and must be disposed of as hazardous waste.

End of the 19th century were used for coastal defense palisades; but they were soon replaced by walls of stone or concrete. A piece of palisade wall for beach protection is still preserved on the East Frisian island of Baltrum.

Concrete palisade with cavetto

Palisades for coastal protection Baltrum