chemistry

Putlog hole

Putlog hole is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Putlog hole rather than just read about it. In short: Putlog holes or putlock holes are small holes made in the walls of structures to receive the ends of poles (small round logs) or beams, called putlogs or putlocks, to support a scaffolding. Putlog holes may extend through a wall to provide staging on both sides of the wall.

Key takeaways

Putlog hole belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Putlog hole to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Putlog hole from memory before moving on to harder problems.

Reference excerpt

Putlog holes or putlock holes are small holes made in the walls of structures to receive the ends of poles (small round logs) or beams, called putlogs or putlocks, to support a scaffolding. Putlog holes may extend through a wall to provide staging on both sides of the wall. A historically common type of scaffolding, putlog holes date from ancient Roman buildings. The term putlock and the newer term putlog date from the 17th century and are still used today. Putlogs may be supported on the outer ends by vertical poles (standards), cantilevered by one end being firmly embedded in the wall, or cantilevered by penetrating the wall to provide scaffolds on both sides. Putlogs may be sawn off flush with the wall if they cannot be removed, but exterior putlog holes are typically filled in as the scaffold is removed to prevent water from entering the walls. Interior putlog holes may be left open, particularly if not in a finished space. The inconsequential size and the spacing of the holes meant that they did not affect the solidity of the walls, and in well-preserved castles, like Beaumaris, the ancient putlog holes can be seen to this day.

Gallery

Illustrations

Worked examples

Example 1 — a first encounter with Putlog hole

Start with the simplest possible case. Write down what Putlog hole claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Putlog hole before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Putlog hole ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Putlog hole

In research: Putlog hole appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Putlog hole in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Putlog hole is common in secondary-school and first-year university syllabi. It links to neighbouring topics Architectural elements, Castle architecture, History stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Putlog hole outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Putlog hole in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Putlog hole means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Putlog hole out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Putlog hole in simple terms?

Why does Putlog hole matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Putlog hole?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Putlog hole.