Standard prestressed girders - Revision history

Ok at 04:18, 13 December 2009

2009-12-13T04:18:55Z

← Older revision		Revision as of 06:18, 13 December 2009
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	* [http://www.shermanconcrete.com/prducpre.htm AASHTO and Bulb-Tee Girder Properties (by Sherman International Corp.)]		* [http://www.shermanconcrete.com/prducpre.htm AASHTO and Bulb-Tee Girder Properties (by Sherman International Corp.)]

	~~[[Category:~~Prestressed Concrete]]		{{Prestressed Concrete}}

Ok: moved Standard Prestressed Girders to Standard prestressed girders

2009-12-13T04:18:02Z

moved Standard Prestressed Girders to Standard prestressed girders

← Older revision	Revision as of 06:18, 13 December 2009
(No difference)

Ok at 04:17, 13 December 2009

2009-12-13T04:17:07Z

← Older revision		Revision as of 06:17, 13 December 2009
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	* [http://www.pci.org/publications/bridge/ PCI Bridge Design Manual]		* [http://www.pci.org/publications/bridge/ PCI Bridge Design Manual]
	* [http://www.shermanconcrete.com/prducpre.htm AASHTO and Bulb-Tee Girder Properties (by Sherman International Corp.)]		* [http://www.shermanconcrete.com/prducpre.htm AASHTO and Bulb-Tee Girder Properties (by Sherman International Corp.)]

			[[Category:Prestressed Concrete]]

Ok at 02:24, 4 September 2006

2006-09-04T02:24:21Z

← Older revision		Revision as of 04:24, 4 September 2006
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	* [http://onlinepubs.trb.org/onlinepubs/millennium/00019.pdf Millenium Paper on Concrete Bridges by TRB Committee A2C03]		* [http://onlinepubs.trb.org/onlinepubs/millennium/00019.pdf Millenium Paper on Concrete Bridges by TRB Committee A2C03]
	* [http://www.pci.org/publications/bridge/ PCI Bridge Design Manual]		* [http://www.pci.org/publications/bridge/ PCI Bridge Design Manual]
			* [http://www.shermanconcrete.com/prducpre.htm AASHTO and Bulb-Tee Girder Properties (by Sherman International Corp.)]

Ok: /* United States */

2006-09-04T01:22:12Z

United States

← Older revision		Revision as of 03:22, 4 September 2006
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	== United States ==		== United States ==
	In the United States, the [[AASHTO]] and [[PCI]] developed standard girder sections Types I through IV in the late 1950s and		In the United States, the [[AASHTO]] and [[PCI]] developed standard girder sections Types I through IV in the late 1950s and
	Types V and VI in the early 1960s. As the technology of prestressed concrete design and construction advanced, [[FHWA]] sponsored a study to evaluate existing standard girder sections and to determine the most efficient girders in late 1970s. The study concluded that ~~This study concluded that~~ bulb-tees were the most efficient sections. As a result, PCI developed the PCI bulb-tee standard, which was endorsed by bridge engineers at the [[1987]] [[AASHTO]] annual meeting. These cross sections are also cost-effective with high-strength concretes for span lengths up to about 60 m (200 ft).		Types V and VI in the early 1960s. As the technology of prestressed concrete design and construction advanced, [[FHWA]] sponsored a study to evaluate existing standard girder sections and to determine the most efficient girders in late 1970s. The study concluded that bulb-tees were the most efficient sections. As a result, PCI developed the PCI bulb-tee standard, which was endorsed by bridge engineers at the [[1987]] AASHTO annual meeting. These cross sections are also cost-effective with high-strength concretes for span lengths up to about 60 m (200 ft).


	== References ==		== References ==
	* [http://onlinepubs.trb.org/onlinepubs/millennium/00019.pdf Millenium Paper on Concrete Bridges by TRB Committee A2C03]		* [http://onlinepubs.trb.org/onlinepubs/millennium/00019.pdf Millenium Paper on Concrete Bridges by TRB Committee A2C03]
	* [http://www.pci.org/publications/bridge/ PCI Bridge Design Manual]		* [http://www.pci.org/publications/bridge/ PCI Bridge Design Manual]

Ok at 01:20, 4 September 2006

2006-09-04T01:20:45Z

New page

In the early days of prestressed concrete bridges, each designer developed their own optimized girder section. This was too expensive, because custom girders were designed for each project. Later, standard sections and [[strand]] layouts for prestressed concrete bridge girders were developed, which greatly simplified the design and fabrication.

== United States ==
In the United States, the [[AASHTO]] and [[PCI]] developed standard girder sections Types I through IV in the late 1950s and
Types V and VI in the early 1960s. As the technology of prestressed concrete design and construction advanced, [[FHWA]] sponsored a study to evaluate existing standard girder sections and to determine the most efficient girders in late 1970s. The study concluded that This study concluded that bulb-tees were the most efficient sections. As a result, PCI developed the PCI bulb-tee standard, which was endorsed by bridge engineers at the [[1987]] [[AASHTO]] annual meeting. These cross sections are also cost-effective with high-strength concretes for span lengths up to about 60 m (200 ft).

== References ==
* [http://onlinepubs.trb.org/onlinepubs/millennium/00019.pdf Millenium Paper on Concrete Bridges by TRB Committee A2C03]
* [http://www.pci.org/publications/bridge/ PCI Bridge Design Manual]