Girder - Revision history

Designing Buildings at 09:25, 30 October 2020

2020-10-30T09:25:14Z

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	A girder is a large and deep type of beam that is used in construction. It is typically capable of longer spans and taking greater loads than a normal beam, and is often used as a main horizontal structural support for smaller beams, such as in bridge construction.		A girder is a large and deep type of beam that is used in construction. It is typically capable of longer spans and taking greater loads than a normal beam, and is often used as a main horizontal structural support for smaller beams, such as in bridge construction.
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	* Types of beam.		* Types of beam.

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Designing Buildings at 08:06, 26 April 2018

2018-04-26T08:06:28Z

← Older revision		Revision as of 08:06, 26 April 2018
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	A girder is a large and deep type of beam that is used in construction. It is typically capable of longer spans and taking greater loads than a normal beam, and is often used as a main horizontal structural support for smaller beams, such as in bridge construction.		A girder is a large and deep type of beam that is used in construction. It is typically capable of longer spans and taking greater loads than a normal beam, and is often used as a main horizontal structural support for smaller beams, such as in bridge construction.

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	* Types of beam.		* Types of beam.

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Designing Buildings at 08:03, 26 April 2018

2018-04-26T08:03:03Z

← Older revision		Revision as of 08:03, 26 April 2018
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	A girder is a large and deep type of beam that is used in construction. It is typically capable of longer spans and taking greater loads than a normal beam, and is often used as a main horizontal structural support for smaller beams, such as in bridge construction.		A girder is a large and deep type of beam that is used in construction. It is typically capable of longer spans and taking greater loads than a normal beam, and is often used as a main horizontal structural support for smaller beams, such as in bridge construction.

−	~~Smaller steel girders can be 'rolled' into the required shape. When girders become larger however – typically 1 m3 deep or more – a standard rolled shape may not be~~ available and ~~a plate girder may have~~ to ~~be fabricated instead.~~	+	There are several different types of girder available depending on circumstances, and the load they are required to support:

−	A plate girder is typically an I-beam cross-section made up of separate structural steel plates which are welded, bolted or riveted together to form the deeper vertical web and narrower horizontal flanges of the beam~~, filled with a steel bar laced web~~. Plate girders ~~can be~~ used for spans of up to ~~15 m with high depth-to-weight ratios~~.	+	* Smaller steel girders can be 'rolled' into the required shape. When girders become larger however, a standard rolled shape may not be available and a plate girder may have to be fabricated instead.
−		+	* A plate girder is typically an I-beam cross-section made up of separate structural steel plates which are welded, bolted or riveted together to form the deeper vertical web and narrower horizontal flanges of the beam. Plate girders are commonly-used for spans of up to 15m.
−	~~There are several different types of girder depending on what they support.~~ A gantry girder ~~is what~~ is used for a gantry crane - typically consisting of two ‘A’ frames connected by a lattice cross member which straddles the work area. The lifting gear is suspended from the horizontal girder and can move along it on rails. For more information, see Types of crane.	+	* A gantry girder is used for a gantry crane - typically consisting of two ‘A’ frames connected by a lattice cross member which straddles the work area. The lifting gear is suspended from the horizontal girder and can move along it on rails. For more information, see Types of crane.
−		+	* A box girder is fabricated from steel plates used to form a rectangular box. This resists torsion better than a plate girder and can be used when depth constraints mean a plate girder cannot be made deeper.
−	A box girder is ~~when the~~ steel plates ~~are~~ used to form a rectangular box. This resists torsion better than a plate girder and can be used when depth constraints mean a plate girder cannot be made deeper.	+

	= Find out more =		= Find out more =

Designing Buildings at 07:56, 26 April 2018

2018-04-26T07:56:37Z

← Older revision		Revision as of 07:56, 26 April 2018
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−	A girder is a ~~larger~~ and ~~deeper~~ type of beam that is used in construction. ~~A girder~~ is typically capable of longer spans and taking greater loads than a normal beam~~. It~~ is often used as ~~the~~ main horizontal structural support ~~and used to support~~ smaller beams, ~~typically~~ in bridge construction.	+	A girder is a large and deep type of beam that is used in construction. It is typically capable of longer spans and taking greater loads than a normal beam, and is often used as a main horizontal structural support for smaller beams, such as in bridge construction.

−	~~Small~~ steel girders ~~are~~ rolled into shape. When girders become larger ~~in size~~ – typically 1 m3 deep or more – ~~it is often not possible to find~~ a standard rolled shape available ~~for use,~~ and plate ~~girders are~~ fabricated instead.	+	Smaller steel girders can be 'rolled' into the required shape. When girders become larger however – typically 1 m3 deep or more – a standard rolled shape may not be available and a plate girder may have to be fabricated instead.

	A plate girder is typically an I-beam cross-section made up of separate structural steel plates which are welded, bolted or riveted together to form the deeper vertical web and narrower horizontal flanges of the beam, filled with a steel bar laced web. Plate girders can be used for spans of up to 15 m with high depth-to-weight ratios.		A plate girder is typically an I-beam cross-section made up of separate structural steel plates which are welded, bolted or riveted together to form the deeper vertical web and narrower horizontal flanges of the beam, filled with a steel bar laced web. Plate girders can be used for spans of up to 15 m with high depth-to-weight ratios.

Editor: Created page with "A girder is a larger and deeper type of beam that is used in construction. A girder is typically capable of longer spans and taking greater loads than a normal beam. It is often ..."

2018-04-09T16:09:16Z

Created page with "A girder is a larger and deeper type of beam that is used in construction. A girder is typically capable of longer spans and taking greater loads than a normal beam. It is often ..."

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A girder is a larger and deeper type of beam that is used in construction. A girder is typically capable of longer spans and taking greater loads than a normal beam. It is often used as the main horizontal structural support and used to support smaller beams, typically in bridge construction.

Small steel girders are rolled into shape. When girders become larger in size – typically 1 m3 deep or more – it is often not possible to find a standard rolled shape available for use, and plate girders are fabricated instead.

A plate girder is typically an I-beam cross-section made up of separate structural steel plates which are welded, bolted or riveted together to form the deeper vertical web and narrower horizontal flanges of the beam, filled with a steel bar laced web. Plate girders can be used for spans of up to 15 m with high depth-to-weight ratios.

There are several different types of girder depending on what they support. A gantry girder is what is used for a gantry crane - typically consisting of two ‘A’ frames connected by a lattice cross member which straddles the work area. The lifting gear is suspended from the horizontal girder and can move along it on rails. For more information, see Types of crane.

A box girder is when the steel plates are used to form a rectangular box. This resists torsion better than a plate girder and can be used when depth constraints mean a plate girder cannot be made deeper.

= Find out more =

=== Related articles on [https://www.designingbuildings.co.uk/wiki/Designing_Buildings_Wiki Designing Buildings Wiki] ===

* Beam bridges.
* Braced frame structures.
* Chilled beam.
* Failure of cast iron beams.
* Flitch beam.
* Ground beam.
* Open web beam.
* Steel frame.
* Structural steelwork.
* Super-strength steel structures.
* Types of beam.

[[Category:Products_/_components]]