Shear strength - Revision history

Editor: Reverted edits by 223.25.25.242 (talk) to last revision by Designing Buildings

2022-06-10T10:55:28Z

Reverted edits by 223.25.25.242 (talk) to last revision by Designing Buildings

← Older revision		Revision as of 10:55, 10 June 2022
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	* Unconsolidated-undrained.		* Unconsolidated-undrained.
−	* Consolidated-undrained.~~asdasd~~	+	* Consolidated-undrained.
	* Consolidated-drained.		* Consolidated-drained.

223.25.25.242 at 10:23, 10 June 2022

2022-06-10T10:23:17Z

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	* Unconsolidated-undrained.		* Unconsolidated-undrained.
−	* Consolidated-undrained.	+	* Consolidated-undrained.asdasd
	* Consolidated-drained.		* Consolidated-drained.

Designing Buildings at 08:16, 22 January 2021

2021-01-22T08:16:29Z

← Older revision		Revision as of 08:16, 22 January 2021
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−	[[File:Shear.jpg]]	+	[[File:Shear.jpg\|link=File:Shear.jpg]]

	Shear is a type of stress in which an applied force causes a structure to 'slide' in two or more directions. Shear can cause a structural member to split vertically or diagonally. For example, a cantilever beam built into a wall may shear at the point of support due either to its own weight or the applied forces, or both.		Shear is a type of stress in which an applied force causes a structure to 'slide' in two or more directions. Shear can cause a structural member to split vertically or diagonally. For example, a cantilever beam built into a wall may shear at the point of support due either to its own weight or the applied forces, or both.
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	* Types of steel.		* Types of steel.

−	[[Category:~~Definitions~~]] [[Category:~~DCN_Definition~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:Definitions]]

Designing Buildings at 10:46, 10 December 2019

2019-12-10T10:46:49Z

← Older revision		Revision as of 10:46, 10 December 2019
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−	Shear is a type of stress where due to an applied outside force the internal structure of a material slides in two or more directions. Shear can cause a structural member to split vertically or diagonally into two or more portions. A cantilever beam built into a wall may shear at the point of support due either to its own weight or the applied forces, or both.	+	[[File:Shear.jpg]]

−	Shear strength is ~~therefore~~ the ~~innate~~ ability of a material or component to resist shear forces without failing or, put another way, the maximum force it can ~~handle~~ before failing ~~due to a force acting parallel to the face of the material)~~.	+	Shear is a type of stress in which an applied force causes a structure to 'slide' in two or more directions. Shear can cause a structural member to split vertically or diagonally. For example, a cantilever beam built into a wall may shear at the point of support due either to its own weight or the applied forces, or both.
		+
		+	Shear strength is the ability of a material or component to resist shear forces without failing or, put another way, the maximum shear force that can be accommodated before failing.

	Shear strength is analogous to ultimate tensile strength (UTS). The difference is that in shear the strain is parallel to the face (or cross-section) of the element in question whereas tensile strain is at right angles.		Shear strength is analogous to ultimate tensile strength (UTS). The difference is that in shear the strain is parallel to the face (or cross-section) of the element in question whereas tensile strain is at right angles.

−	In structures, knowing the shear strength of materials is critical to be able to design or specify ~~the~~ components (e.g beams, plates, bolts etc) ~~of a structure~~ economically ~~to withstand~~ shear forces.	+	In structures, knowing the shear strength of materials is critical to be able to design or specify structural components (e.g beams, plates, bolts etc) economically whilst still withstanding shear forces.

−	In ~~wood~~, ~~the~~ strength tends to be affected by the direction of loading in relation to the grain. The shear strength tends to be around 10-15% of its tensile strength (in the direction of the grain). But shear strength will be reduced by the presence of knots, cracks and faults.	+	In timber, shear strength tends to be affected by the direction of loading in relation to the grain. The shear strength tends to be around 10-15% of its tensile strength (in the direction of the grain). But shear strength will be reduced by the presence of knots, cracks and faults.

−	Adhesives tend to have high shear strengths. ~~They~~ can be measured by bonding two ~~aluminium~~ strips together then ~~pulled~~ apart under a constant load. ~~However~~, this is an idealised test and in use the shear strength of an adhesive can depend on many variables including ~~the choice of resin and the~~ surface preparation~~. Typically~~, ~~an epoxy resin adhesive can have shear strengths in the region of 26MPa~~.	+	Adhesives tend to have high shear strengths. This can be measured by bonding two strips together then pulling them apart under a constant load. Typically, an epoxy resin adhesive can have shear strengths in the region of 26MPa, however, this is an idealised test and in use the shear strength of an adhesive can depend on many variables including surface preparation, conditions and so on.

−	Bolts ~~tend to~~ have a critical function in ~~building~~, ~~especially~~ if they are used to connect ~~the~~ steel frame together or fix steel beams to a concrete core. In such instances, bolts ~~must~~ withstand ~~huge~~ forces ~~so calculating the shear strength of a bolt can be critical if they are not to fail in service~~.	+	Bolts can have a critical function in structures, for example, if they are used to connect a steel frame together or fix steel beams to a concrete core. In such instances, bolts may be required to withstand significant shear forces.

−	Typical shear strengths	+	Typical shear strengths include:

	* Concrete – 6-17 MPa		* Concrete – 6-17 MPa
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	* Mild steel – 345-525 MPa.		* Mild steel – 345-525 MPa.

−	In soil mechanics, shear strength of soil is the ~~amount of~~ shear force which can be sustained by the soil. This ~~comprises~~ numerous variables such as the friction ~~involved~~ between particles and the degree of interlock between them, whether they are cemented together or bonded at contact surfaces.	+	In soil mechanics, the shear strength of soil is the shear force which can be sustained by the soil. This is dependent on numerous variables such as the friction between particles and the degree of interlock between them, whether they are cemented together or bonded at contact surfaces and so on.

	Determining the shear strength of a cohesionless soil can be achieved by using either a direct shear test or a box shear test. Using the direct shear method allows the cohesion and angle of internal friction of soil to be established, which can be useful in the engineering design of elements such as foundations and retaining walls.		Determining the shear strength of a cohesionless soil can be achieved by using either a direct shear test or a box shear test. Using the direct shear method allows the cohesion and angle of internal friction of soil to be established, which can be useful in the engineering design of elements such as foundations and retaining walls.
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	The direct shear test can be applied to the following soil conditions:		The direct shear test can be applied to the following soil conditions:

−	* ~~unconsolidated~~-undrained	+	* Unconsolidated-undrained.
−	* ~~consolidated~~-undrained	+	* Consolidated-undrained.
−	* ~~consolidated~~-drained.	+	* Consolidated-drained.
		+
		+	See also: Shear.

	= Related articles on Designing Buildings Wiki =		= Related articles on Designing Buildings Wiki =
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	* Metal fabrication.		* Metal fabrication.
	* Rebar.		* Rebar.
		+	* Shear.
	* Stainless steel.		* Stainless steel.
	* Structural failures.		* Structural failures.
	* Structural steelwork.		* Structural steelwork.
	* Tensile structures.		* Tensile structures.
		+	* Types of bolt.
	* Types of steel.		* Types of steel.

−	[[Category:Definitions]]	+	[[Category:Definitions]] [[Category:DCN_Definition]]

Editor: Created page with "Shear is a type of stress where due to an applied outside force the internal structure of a material slides in two or more directions. Shear can cause a structural member to spli..."

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Created page with "Shear is a type of stress where due to an applied outside force the internal structure of a material slides in two or more directions. Shear can cause a structural member to spli..."

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Shear is a type of stress where due to an applied outside force the internal structure of a material slides in two or more directions. Shear can cause a structural member to split vertically or diagonally into two or more portions. A cantilever beam built into a wall may shear at the point of support due either to its own weight or the applied forces, or both.

Shear strength is therefore the innate ability of a material or component to resist shear forces without failing or, put another way, the maximum force it can handle before failing due to a force acting parallel to the face of the material).

Shear strength is analogous to ultimate tensile strength (UTS). The difference is that in shear the strain is parallel to the face (or cross-section) of the element in question whereas tensile strain is at right angles.

In structures, knowing the shear strength of materials is critical to be able to design or specify the components (e.g beams, plates, bolts etc) of a structure economically to withstand shear forces.

In wood, the strength tends to be affected by the direction of loading in relation to the grain. The shear strength tends to be around 10-15% of its tensile strength (in the direction of the grain). But shear strength will be reduced by the presence of knots, cracks and faults.

Adhesives tend to have high shear strengths. They can be measured by bonding two aluminium strips together then pulled apart under a constant load. However, this is an idealised test and in use the shear strength of an adhesive can depend on many variables including the choice of resin and the surface preparation. Typically, an epoxy resin adhesive can have shear strengths in the region of 26MPa.

Bolts tend to have a critical function in building, especially if they are used to connect the steel frame together or fix steel beams to a concrete core. In such instances, bolts must withstand huge forces so calculating the shear strength of a bolt can be critical if they are not to fail in service.

Typical shear strengths

* Concrete – 6-17 MPa
* Epoxy resin adhesive – 26MPa
* Aluminium – 55.2 MPa
* Mild steel – 345-525 MPa.

In soil mechanics, shear strength of soil is the amount of shear force which can be sustained by the soil. This comprises numerous variables such as the friction involved between particles and the degree of interlock between them, whether they are cemented together or bonded at contact surfaces.

Determining the shear strength of a cohesionless soil can be achieved by using either a direct shear test or a box shear test. Using the direct shear method allows the cohesion and angle of internal friction of soil to be established, which can be useful in the engineering design of elements such as foundations and retaining walls.

The direct shear test can be applied to the following soil conditions:

* unconsolidated-undrained
* consolidated-undrained
* consolidated-drained.

= Related articles on Designing Buildings Wiki =

* Compression.
* Defects in construction.
* Failure of cast iron beams.
* Latent defects.
* Metal fabrication.
* Rebar.
* Stainless steel.
* Structural failures.
* Structural steelwork.
* Tensile structures.
* Types of steel.

[[Category:Definitions]]