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→What is the standard tolerance on Standard Gauge?: put that back where it came from
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:::The issues is -- how exactly was it specified? ANSWER : four feet eight and one-half inches [[User:Alanf777|Alanf777]] ([[User talk:Alanf777|talk]]) 02:33, 9 January 2019 (UTC) |
:::The issues is -- how exactly was it specified? ANSWER : four feet eight and one-half inches [[User:Alanf777|Alanf777]] ([[User talk:Alanf777|talk]]) 02:33, 9 January 2019 (UTC) |
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:In the US at least, standard gauge is defined by Federal law (49 CFR part 213). It is specified in numeric feet and inches: 4'8" (minimum), etc. The tolerance depends on the track class (which basically means the maximum speed allowed). There are also allowances for gauge variation under load. I would assume other countries have a similar regulation. <!-- Template:Unsigned IP --><small class="autosigned">— Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/2601:589:300:c7c0:8538:3d2d:9c19:6af2|2601:589:300:c7c0:8538:3d2d:9c19:6af2]] ([[User talk:2601:589:300:c7c0:8538:3d2d:9c19:6af2#top|talk]]) 02:13, 14 June 2024 (UTC) |
:In the US at least, standard gauge is defined by Federal law (49 CFR part 213). It is specified in numeric feet and inches: 4'8" (minimum), etc. The tolerance depends on the track class (which basically means the maximum speed allowed). There are also allowances for gauge variation under load. I would assume other countries have a similar regulation. <!-- Template:Unsigned IP --><small class="autosigned">— Preceding [[Wikipedia:Signatures|unsigned]] comment added by [[Special:Contributions/2601:589:300:c7c0:8538:3d2d:9c19:6af2|2601:589:300:c7c0:8538:3d2d:9c19:6af2]] ([[User talk:2601:589:300:c7c0:8538:3d2d:9c19:6af2#top|talk]]) 02:13, 14 June 2024 (UTC)</small> |
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*Comment* The standard tolerance on Standard Gauge railway track varies depending on the specific element being measured. Here's a breakdown: |
*Comment* The standard tolerance on Standard Gauge railway track varies depending on the specific element being measured. Here's a breakdown: |
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It's interesting to know that in the case of US, the gauge is defined by law. So we have to find out if any regional body has a standard set of definitions. |
It's interesting to know that in the case of US, the gauge is defined by law. So we have to find out if any regional body has a standard set of definitions. |
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[[User:Heatrave|Heatrave]] ([[User talk:Heatrave|talk]]) 10:30, 14 June 2024 (UTC) |
[[User:Heatrave|Heatrave]] ([[User talk:Heatrave|talk]]) 10:30, 14 June 2024 (UTC) |
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== Rail Gauge World Map == |
== Rail Gauge World Map == |
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I propose to remove Standard gauge#Installations section completely. Are we really gonna list all lines? -DePiep (talk) 16:07, 6 April 2014 (UTC)[reply]
An installations section is in line with the other track gauge articles, complemented by categorization.
--Aaron-Tripel (talk) 21:20, 17 September 2014 (UTC)[reply]
I read a comment that said it is "impossible to write imperial first" (now deleted btw; it related to Hong Kong). This is not correct.
With {{track gauge}}, it is possible to force any unit (metric or imperial) to be mentioned first. Use |first=
:
{{Track gauge|sg|first=met}}
→ 1,435 mm (4 ft 8+1⁄2 in){{Track gauge|sg|first=imp}}
→ 4 ft 8+1⁄2 in (1,435 mm)This works for every gauge.
With s.g., there are also the input options:
{{Track gauge|sg}}
→ 1,435 mm (4 ft 8+1⁄2 in) -- default{{Track gauge|metsg}}
→ 1,435 mm (4 ft 8+1⁄2 in){{Track gauge|ussg}}
→ 4 ft 8+1⁄2 in (1,435 mm){{Track gauge|impsg}}
→ 4 ft 8+1⁄2 in (1,435 mm)As for wikilinks, if such a link is defined in the datalist, that is always linked to the unit-definition that is the input:
{{Track gauge|metsg|lk=on}}
→ 1,435 mm (4 ft 8+1⁄2 in){{Track gauge|impsg|lk=on}}
→ 4 ft 8+1⁄2 in (1,435 mm){{Track gauge|metsg|lk=on|first=imp}}
→ 4 ft 8+1⁄2 in (1,435 mm){{Track gauge|metre|lk=on|first=imp}}
→ 3 ft 3+3⁄8 in (1,000 mm) -- (note: metre is not defined in imperial at all)Is this article written in en-UK or en-US? I see 'meter' and 'metre' in the text. -DePiep (talk) 15:23, 8 November 2016 (UTC)[reply]
The result of the move request was: moved. Jenks24 (talk) 09:37, 6 November 2017 (UTC)[reply]
Standard gauge → Standard-gauge railway – See the entries and sub-entries in the template on the right. All use the latter form. For eg. see Narrow-gauge railway and Broad-gauge railway. 168.233.20.6 (talk) 16:44, 22 October 2017 (UTC)--Relisting. —usernamekiran(talk) 19:37, 29 October 2017 (UTC)[reply]
Stephenson gauge in imperial units is 5'8"1/2, 1435 mm from rail interior to rail interior ( to be more precise, 14 mm under the rolling plane) The first public railway in continental Europe was Saint Eienne Andrezieux (opened 1827), gauge 1500mm from rail axis to rail axis) All the early railways in france had that gauge, roughly 1440 mm, in the tolerances for Stephenson gauge. For Paris St Germain (1835) , the definition of gauge was 1440mm interior 1560 exterior and 1500 from axis to axis; For the next lines (begining with Paris Versailles) the gauge was either 1440 or 1445, compatible with 1435 gauge. Belgium had the same rules First line in Germany was Nuremberg Furth, built by Von Denis, franco-german engineer, using french Standards. the next lines in germany used a quasi standard gauge compatible with French gauges — Preceding unsigned comment added by 89.92.64.223 (talk) 19:35, 3 December 2017 (UTC)[reply]
There is a lot of dubious material in this article, and a lot of improbable citation.
Perhaps the most important fact (or assertion) is the choice of 4ft 8+1⁄2in by G Stephenson, and at the time of writing this we are asked to rely on a "fun" entertainment snippet in a local Australian newspaper. (Townsville, population 180,000.) A more authoritative source would be better, but there is a huge amount of narrative missing in the explanation.
I don't understand the importance of listing vast numbers of railways that used standard gauge. People may come to this page for information about the topic, but don't care to wade through huge tables of lists. (In any case the lists are non-exhaustive, thankfully.) Afterbrunel (talk) 11:37, 30 March 2018 (UTC)[reply]
No-one can build and maintain track at an exact gauge of 1.435 International Standard metres. There must be a definition (International [bar USA], National, or local) of the allowable deviation, in new build track and in later use.
Equally, there must be specifications for the variability of the outline of the outer part of the cross-section of the rims of the wheels.
There should be a section on this.
94.30.84.71 (talk) 15:26, 15 October 2018 (UTC)[reply]
Gauge:
Standard Gauge: 1435 mm (4 ft 8 1/2 in) Tolerance: ± 3 mm (± 0.12 in)
Other Track Components:
Track Alignment: Cant (Superelevation): Tolerances vary based on the curve radius and speed limits.
Tangent Track:Tolerances are typically very tight, often in the range of millimeters. Curve Track:Tolerances are generally looser than tangent track, allowing for some variation in alignment to accommodate the curve.
Track Level:
Tolerances:Typically measured in millimeters or inches per unit of length (e.g., mm/meter or inches/100 feet).
Track Cross Level:
Tolerances: Similar to track level, measured in millimeters or inches per unit of length.
Rail Height: Tolerances:Typically in the range of a few millimeters. Tie Spacing:
Tolerances:Usually within a few millimeters.
Ballast Depth:
Tolerances:Can vary depending on the type of ballast and the track structure.
Factors Influencing Tolerances:
Speed Limits:Higher speed limits generally require tighter tolerances. Track Type:Heavy-haul lines often have tighter tolerances than branch lines. Track Maintenance Practices:Regular maintenance helps ensure track tolerances are met. Environmental Conditions:Temperature fluctuations, frost heave, and other environmental factors can affect track geometry.
Importance of Tolerances:
Smooth Ride: Tight tolerances ensure a smooth ride for passengers and freight. Track Stability:Proper tolerances contribute to track stability and reduce the risk of derailments. Train Speed: Tolerances influence the maximum speed that trains can safely travel on a particular track.
Other considerations
The specific tolerances for a particular railway line are usually defined in the track standards and specifications for that line.
It's interesting to know that in the case of US, the gauge is defined by law. So we have to find out if any regional body has a standard set of definitions.
Heatrave (talk) 10:30, 14 June 2024 (UTC)[reply]
The world Gauge map shows Northern Ireland as being standard gauge (light blue), where as it should be Irish gauge (light green). NI_Railways Was edited by Newfraferz87 82.15.216.132 (talk) 20:24, 14 July 2020 (UTC)[reply]
There's a british history of the Gauge War that details the negotiations, politics, and meetings that led to the adoption of standard gauge and the nature of its origins as a compromise standard based on economic factors. It describes the process in detail and should constitute a primary source for rejecting the "roman chariot wheelbase" myth and other dubious accounts, as it covers the entire causal chain in detail
Regrettably, I read it in person in a library several years ago, and cannot remember the details; nor do I have experience in searching book collections. I leave this here in case any interested party who does have the skills to locate research on a topic is interested. 2A02:C7E:75B:6000:3839:BF78:EB35:AA27 (talk) 15:07, 6 August 2021 (UTC)[reply]