engineering

Loftus Junction railway signal box

Loftus Junction railway signal box is a engineering 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 Loftus Junction railway signal box rather than just read about it. In short: The Loftus Junction railway signal box is a heritage-listed disused railway signal box on the Illawarra line at Loftus in the Sutherland Shire local government area of New South Wales, Australia. It was built during 1886.

Key takeaways

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

Reference excerpt

The Loftus Junction railway signal box is a heritage-listed disused railway signal box on the Illawarra line at Loftus in the Sutherland Shire local government area of New South Wales, Australia. It was built during 1886. The property is owned by RailCorp, an agency of Government of New South Wales. It was added to the New South Wales State Heritage Register on 2 April 1999.

History The Illawarra line was opened from Sutherland to Waterfall in 1886, being constructed by William Rowe and W. Smith. The branch line was also opened in 1886 to a station named Loftus which was the terminus of a single line of 1.6 kilometres (0.99 mi) for military traffic, the Royal National Park then being an army training reserve. The Loftus Junction Signal box was also constructed at this time. The line was duplicated in 1890 and electrified in 1926. Initially the timber signal box was built on the southern end of a small timber platform station named Loftus Junction and this was the first signal and track interlocked point on the Illawarra Line, though the National Park was not interlocked until the 1926 electrification. In 1888 the National Park was set aside for public recreation, and the station was then renamed "National Park" undergoing various changes until finally becoming The Royal National Park in 1955. In 1899 a short length of double line was opened from Loftus Junction to a short distance along the branch line to cope with the growth of rail traffic, but in 1944 this was converted back to a single track connection. Loftus Junction station was renamed Loftus in 1896 and because its location was difficult for starting "Down" trains on the rising 1 in 40 grade, the platforms were moved back towards Sydney in 1917, leaving the original signal box in an isolated situation. The concrete location huts are likely to have been constructed between 1917-1924 with precast panels manufactured at the Auburn cement works. After closure in 1991, most of the internal equipment was removed from the signal box and the windows boarded up.

Description Context The Loftus Signal Box and two concrete drop-slab location huts are on railway land within the railway corridor east of Loftus Avenue, opposite the intersection of Loftus Avenue and Nattai Street, Loftus.

Junction Signal Box (1886) The exterior of the signal box has painted brick foundations approx 1m in height. It is a small freestanding gabled weatherboard rectangular building with timber barge boards, and simple short finials with triangular tops. The building has a painted corrugated steel roof without any eaves overhang. A corrugated steel roofed and walled skillion section on the western side is at ground level. Window openings and door to the building have been covered over. On the north side of the building, outside the entry door, is a concrete deck with timber steps and a pipe railing. There is an old fluorescent light and a downpipe across the north elevation. Inside the signal box, no equipment is extant.

Condition As at 23 November 2012, the condition of the Signal Box was moderate. The guttering to the building is deteriorated. The junction and trackage which related to the signal box have been removed, and therefore the context has lost significance. The signal box is now disused. The building has been repainted and windows covered over. Equipment has been removed from the interior. The integrity of the overall structure is low.

Modifications and dates 1891 – Interlocking removed 1926 – single line branch auto signalling 1991 – frame removed N.d. – Corrugated steel addition to side.

Heritage listing As at 10 July 2014, this was the best surviving example of a small signal box for a remote function from the Victorian period. The building is of excellent proportion, of high visual quality and in relation to the adjacent tramway museum forms an extremely important element of the south coast railway system. The box has a typically elevated floor to allow the signal equipment to operate under it and was designed to work the junction points and signals. The building has a pitched gable ended corrugated iron roof without eaves overhang. Access is through a door in the up end and a small timber staircase. Windows extend around three sides. The scale of the building is small reflecting the size of the location. Loftus Junction railway signal box was listed on the New South Wales State Heritage Register on 2 April 1999.

Illustrations

Worked examples

Example 1 — a first encounter with Loftus Junction railway signal box

Start with the simplest possible case. Write down what Loftus Junction railway signal box claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, 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 Loftus Junction railway signal box 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 Loftus Junction railway signal box 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 Loftus Junction railway signal box

In research: Loftus Junction railway signal box appears in engineering 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 Loftus Junction railway signal box 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: Loftus Junction railway signal box is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1886 establishments in Australia, Buildings and structures completed in 1886, New South Wales State Heritage Register, so understanding it makes those chapters shorter.
In everyday life: Look for Loftus Junction railway signal box 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.

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How to study Loftus Junction railway signal box in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Loftus Junction railway signal box 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 Loftus Junction railway signal box out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Loftus Junction railway signal box in simple terms?

Why does Loftus Junction railway signal box matter?

Because it connects several engineering 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 Loftus Junction railway signal box?

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 Loftus Junction railway signal box.