Why are there holes in ancient walls?

Introduction. Putlog holes (also referred to as putlock holes or putholes) are small gaps or recesses incorporated into the construction of a stone or brick wall. Their purpose is to support the short horizontal beams or round poles known as putlogs (or putlocks).



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An arrowslit (often also referred to as an arrow loop, loophole or loop hole, and sometimes a balistraria) is a narrow vertical aperture in a fortification through which an archer can launch arrows or a crossbowman can launch bolts.

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The height of walls varied widely by castle, but were often 2.5–6 m (8.2–19.7 ft) thick. They were usually topped with crenellation or parapets that offered protection to defenders.

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To counter siege tactics used during the time period when they were built. Catapults exists, but the thicker the wall, the longer and more difficult it was to break a hole in the wall the enemy forces could enter the city or castle through.

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As the gate is always a vulnerable point of a castle, towers may be built near it to strengthen the defences at this point. In crusader castles, there is often a gate tower, with the gate passage leading through the base of the tower itself.

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Often, these walls sloped away at the base to redirect objects dropped from the top of the castle wall, ricocheting them out at soldiers on the ground. Because they had walls to protect them, castle defenders would sometimes hunker down and try to wait out their attackers.

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Dry stone, sometimes called drystack or, in Scotland, drystane, is a building method by which structures are constructed from stones without any mortar to bind them together. A certain amount of binding is obtained through the use of carefully selected interlocking stones.

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