Invert - Revision history

Kevin F. Cory at 17:50, 25 September 2023

2023-09-25T17:50:48Z

← Older revision		Revision as of 17:50, 25 September 2023
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	= Introduction =		= Introduction =

−	In a ~~[https://entertainseries.com/~~ pipe], sewer, channel or tunnel, the invert is the lowest point upon which water can flow on the inside. If circular in shape, the invert is the lowest point on the inner circle if looking at a section of the construction. The invert may be considered the 'floor level' of the vessel in question.	+	In a pipe, sewer, channel or tunnel, the invert is the lowest point upon which water can flow on the inside. If circular in shape, the invert is the lowest point on the inner circle if looking at a section of the construction. The invert may be considered the 'floor level' of the vessel in question.

	In a tunnel constructed by drill and blast or by NATM (New Austrian Tunnelling Method), the invert will vary according to the stage of the construction: the invert will always be the lowest point inside that has been excavated at that point in time. This will become lower as the excavation proceeds, with the final invert level being that of the complete tunnel.		In a tunnel constructed by drill and blast or by NATM (New Austrian Tunnelling Method), the invert will vary according to the stage of the construction: the invert will always be the lowest point inside that has been excavated at that point in time. This will become lower as the excavation proceeds, with the final invert level being that of the complete tunnel.

Kevin F. Cory at 17:50, 25 September 2023

2023-09-25T17:50:15Z

← Older revision		Revision as of 17:50, 25 September 2023
Line 1:		Line 1:
	= Introduction =		= Introduction =

−	In a pipe, sewer, channel or tunnel, the invert is the lowest point upon which water can flow on the inside. If circular in shape, the invert is the lowest point on the inner circle if looking at a section of the construction. The invert may be considered the 'floor level' of the vessel in question.	+	In a [https://entertainseries.com/ pipe], sewer, channel or tunnel, the invert is the lowest point upon which water can flow on the inside. If circular in shape, the invert is the lowest point on the inner circle if looking at a section of the construction. The invert may be considered the 'floor level' of the vessel in question.

	In a tunnel constructed by drill and blast or by NATM (New Austrian Tunnelling Method), the invert will vary according to the stage of the construction: the invert will always be the lowest point inside that has been excavated at that point in time. This will become lower as the excavation proceeds, with the final invert level being that of the complete tunnel.		In a tunnel constructed by drill and blast or by NATM (New Austrian Tunnelling Method), the invert will vary according to the stage of the construction: the invert will always be the lowest point inside that has been excavated at that point in time. This will become lower as the excavation proceeds, with the final invert level being that of the complete tunnel.
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	= External Links =		= External Links =

−	https://routineconstruction.com/what-is-invert-level-in-sewer-calculation-of-invert-level/surveying/ invert level	+	[https://routineconstruction.com/what-is-invert-level-in-sewer-calculation-of-invert-level/surveying/ https://routineconstruction.com/what-is-invert-level-in-sewer-calculation-of-invert-level/surveying/] invert level

	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Theory]] [[Category:Construction_techniques]] [[Category:Design]]		[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Theory]] [[Category:Construction_techniques]] [[Category:Design]]

Editor at 12:08, 10 July 2023

2023-07-10T12:08:28Z

← Older revision		Revision as of 12:08, 10 July 2023
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	Sometimes it may be necessary to reverse this calculation when the crown is known and the invert level is not known.		Sometimes it may be necessary to reverse this calculation when the crown is known and the invert level is not known.

−	= Related articles on Designing Buildings ~~Wiki~~ =	+	Manhole Design & invert level.
		+
		+	The of the manhole is kept equal to the invert level of the sewer line. A manhole is dug 2 feet below the invert level, and a layer of concrete is poured up to the invert level, then filled with concrete half the pipe height with a little dry concrete to match the size of the round pipe. Is. , which makes the manhole look like a conduit in reverse.
		+
		+	If the pipes are coming from different sides in the main hole, the pipe is diverted towards the main pipe at a suitable slope with the help of concrete as per the occasion. And it is also called manhole bunching in engineering.
		+
		+	And it is smoothed from the top so that the material flowing from the reverse surface of the manhole easily enters the pipeline of the manhole. The measurement from the invert level of the manhole to the top surface of the manhole is called the height of the manhole.
		+
		+	= Related articles on Designing Buildings =

	* At grade.		* At grade.
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	* Trenchless technology.		* Trenchless technology.
	* Tunnelling.		* Tunnelling.
		+
		+	= External Links =
		+
		+	https://routineconstruction.com/what-is-invert-level-in-sewer-calculation-of-invert-level/surveying/ invert level

	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Theory]] [[Category:Construction_techniques]] [[Category:Design]]		[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Theory]] [[Category:Construction_techniques]] [[Category:Design]]

Editor: Reverted edits by Kevin F. Cory (talk) to last revision by Designing Buildings

2023-07-10T12:05:24Z

Reverted edits by Kevin F. Cory (talk) to last revision by Designing Buildings

← Older revision		Revision as of 12:05, 10 July 2023
Line 18:		Line 18:

	Sometimes it may be necessary to reverse this calculation when the crown is known and the invert level is not known.		Sometimes it may be necessary to reverse this calculation when the crown is known and the invert level is not known.
−
−	~~Manhole Design & invert level.~~
−
−	The [https://routineconstruction.com/what-is-invert-level-in-sewer-calculation-of-invert-level/surveying/ invert level] of the manhole is kept equal to the invert level of the sewer line. A manhole is dug 2 feet below the invert level, and a layer of concrete is poured up to the invert level, then filled with concrete half the pipe height with a little dry concrete to match the size of the round pipe. Is. , which makes the manhole look like a conduit in reverse.
−
−	If the pipes are coming from different sides in the main hole, the pipe is diverted towards the main pipe at a suitable slope with the help of concrete as per the occasion. And it is also called manhole bunching in engineering.
−
−	And it is smoothed from the top so that the material flowing from the reverse surface of the manhole easily enters the pipeline of the manhole. The measurement from the invert level of the manhole to the top surface of the manhole is called the height of the manhole.

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

Kevin F. Cory at 11:39, 10 July 2023

2023-07-10T11:39:16Z

← Older revision		Revision as of 11:39, 10 July 2023
Line 18:		Line 18:

	Sometimes it may be necessary to reverse this calculation when the crown is known and the invert level is not known.		Sometimes it may be necessary to reverse this calculation when the crown is known and the invert level is not known.
		+
		+	Manhole Design & invert level.
		+
		+	The [https://routineconstruction.com/what-is-invert-level-in-sewer-calculation-of-invert-level/surveying/ invert level] of the manhole is kept equal to the invert level of the sewer line. A manhole is dug 2 feet below the invert level, and a layer of concrete is poured up to the invert level, then filled with concrete half the pipe height with a little dry concrete to match the size of the round pipe. Is. , which makes the manhole look like a conduit in reverse.
		+
		+	If the pipes are coming from different sides in the main hole, the pipe is diverted towards the main pipe at a suitable slope with the help of concrete as per the occasion. And it is also called manhole bunching in engineering.
		+
		+	And it is smoothed from the top so that the material flowing from the reverse surface of the manhole easily enters the pipeline of the manhole. The measurement from the invert level of the manhole to the top surface of the manhole is called the height of the manhole.

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =

Designing Buildings at 08:05, 13 January 2021

2021-01-13T08:05:20Z

← Older revision		Revision as of 08:05, 13 January 2021
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	* Tunnelling.		* Tunnelling.

−	[[Category:Theory]] [[Category:Construction_techniques]] [[Category:Design]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Theory]] [[Category:Construction_techniques]] [[Category:Design]]

Editor at 19:09, 30 May 2019

2019-05-30T19:09:16Z

← Older revision		Revision as of 19:09, 30 May 2019
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	* Cofferdam.		* Cofferdam.
	* Controlled waters.		* Controlled waters.
		+	* Datum.
	* Drainage.		* Drainage.
	* Ordnance Datum.		* Ordnance Datum.

Editor at 10:28, 19 February 2019

2019-02-19T10:28:01Z

← Older revision		Revision as of 10:28, 19 February 2019
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	* Drainage.		* Drainage.
	* Ordnance Datum.		* Ordnance Datum.
−	* ~~NATM~~.	+	* Construction acronyms.
	* Trenchless technology.		* Trenchless technology.
	* Tunnelling.		* Tunnelling.

	[[Category:Theory]] [[Category:Construction_techniques]] [[Category:Design]]		[[Category:Theory]] [[Category:Construction_techniques]] [[Category:Design]]

Editor at 10:26, 19 February 2019

2019-02-19T10:26:54Z

← Older revision		Revision as of 10:26, 19 February 2019
Line 4:		Line 4:

	In a tunnel constructed by drill and blast or by NATM (New Austrian Tunnelling Method), the invert will vary according to the stage of the construction: the invert will always be the lowest point inside that has been excavated at that point in time. This will become lower as the excavation proceeds, with the final invert level being that of the complete tunnel.		In a tunnel constructed by drill and blast or by NATM (New Austrian Tunnelling Method), the invert will vary according to the stage of the construction: the invert will always be the lowest point inside that has been excavated at that point in time. This will become lower as the excavation proceeds, with the final invert level being that of the complete tunnel.
		+
		+	Also, a tunnel being constructed using NATM (sometimes called 'sequential excavation') may have two or three varying inverts as excavation of the centre and sides of the tunnel may be at different stages.

	An invert will typically be laid to a gradient, particularly if it is to convey liquids, such as in a pipe or sewer. The level of the gradient will therefore vary according to the position of the invert along the flow.		An invert will typically be laid to a gradient, particularly if it is to convey liquids, such as in a pipe or sewer. The level of the gradient will therefore vary according to the position of the invert along the flow.
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	In contrast, the ‘crown’ of the tunnel or pipe is that point located on the top external surface that is directly above the invert. One way to calculate the crown position is by adding (or subtracting) the internal diameter and the material’s thickness to (or from) the invert level.		In contrast, the ‘crown’ of the tunnel or pipe is that point located on the top external surface that is directly above the invert. One way to calculate the crown position is by adding (or subtracting) the internal diameter and the material’s thickness to (or from) the invert level.

−	For example, if a 10m-internal diameter tunnel of circular-section with uniform 500mm thickness and an invert level of 16m below ground level, the crown level would be established by subtracting from the invert level ~~datum~~ the internal diameter (10m) plus the material thickness, which is equivalent to: 16m – 10m – 0.5m = 5.5m.	+	For example, if a 10m-internal diameter tunnel of circular-section with uniform 500mm thickness and an invert level of 16m below ground level, the crown level would be established by subtracting from the invert level the internal diameter (10m) plus subtracting the material thickness, which is equivalent to: 16m – 10m – 0.5m = 5.5m.

	So, the crown datum level is at 5.5m below ground.		So, the crown datum level is at 5.5m below ground.
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	* Drainage.		* Drainage.
	* Ordnance Datum.		* Ordnance Datum.
		+	* NATM.
	* Trenchless technology.		* Trenchless technology.
	* Tunnelling.		* Tunnelling.

	[[Category:Theory]] [[Category:Construction_techniques]] [[Category:Design]]		[[Category:Theory]] [[Category:Construction_techniques]] [[Category:Design]]

Designing Buildings at 19:22, 18 February 2019

2019-02-18T19:22:59Z

← Older revision		Revision as of 19:22, 18 February 2019
Line 1:		Line 1:
	= Introduction =		= Introduction =

−	In a pipe, sewer, channel or tunnel, the invert is the lowest point upon which water can flow on the inside. If circular in shape, the invert is the lowest point on the inner circle if looking at a section of the construction. The invert may be considered the floor level of the vessel in question.	+	In a pipe, sewer, channel or tunnel, the invert is the lowest point upon which water can flow on the inside. If circular in shape, the invert is the lowest point on the inner circle if looking at a section of the construction. The invert may be considered the 'floor level' of the vessel in question.

−	In a tunnel constructed by drill and blast or by NATM, the invert will vary according to the stage of the construction: the invert will always be the lowest point inside that has been excavated at that point in time. This will become ~~increasingly~~ lower as the excavation proceeds, with the final invert level being that of the complete tunnel.	+	In a tunnel constructed by drill and blast or by NATM (New Austrian Tunnelling Method), the invert will vary according to the stage of the construction: the invert will always be the lowest point inside that has been excavated at that point in time. This will become lower as the excavation proceeds, with the final invert level being that of the complete tunnel.

	An invert will typically be laid to a gradient, particularly if it is to convey liquids, such as in a pipe or sewer. The level of the gradient will therefore vary according to the position of the invert along the flow.		An invert will typically be laid to a gradient, particularly if it is to convey liquids, such as in a pipe or sewer. The level of the gradient will therefore vary according to the position of the invert along the flow.