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Why the precast girders are used instead of reinforced cement concrete girders?
Wiki User
∙ 14y ago
becos precast girders are not cast in -site and therefore faster. they also available in standard size.
Wiki User
∙ 14y ago
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Is GFRC the same thing as precast?
NO.GFRC stands for glass fiber reinforced concrete. Precast is concrete (typically reinforced with steel) poured at a factory (rather than cast at the job site)For GFRC information see http:/www.strombergarchitectural.com/materials/gfrc for gfrc guidebooks, technical information etc.
What is box culvert?
Box culvert can be described as either a precast concrete or reinforced concrete structure in rectangular figure, facilitating water flow through an embankment of road,etc,as a similar function performed by concrete pipe culvert.
What is difference between pre tension and post tension precast girders of bridge?
A simple explanation: PRE tensioned- cables are tensioned, and the concrete is cast around it. The tensioning is done BEFORE casting the concrete (PRE = before). POST tensioned- cables are placed inside of ducts or are greased to prevent bonding to the concrete, the concrete is cast around the cables, and then the cables are tensioned after the concrete has reached a desired strength. The tensioning is done AFTER the concrete is cast (POST = after).
What is precast?
Reinforced concrete beams, pillars, pipes, forms, etc. that were cast in a factory instead of onsite around a mesh of welded rebar. For many of these items getting the rebar pretensioned correctly for the use is easier in a factory than outdoors on a worksite exposed to the weather.
How do you use the word precast in a sentence?
the consist of precast slabs fixed on concrete posts
Can precast concrete be cut to fit?
yes
How is precast concrete produced?
unlike standard concrete which is in a liquid form and poured were it is needed and formed, precast concrete is molded offsite into the form that is required and then shipped to the site where it will be set into place.
What has the author Martin J Gutzwiller written?
Martin J. Gutzwiller has written: 'Use of precast, prestressed concrete for bridge decks' -- subject(s): Bridges, Floors, Precast concrete, Prestressed concrete, Testing
What has the author A H Gustaferro written?
A. H. Gustaferro has written: 'Design for fire resistance of precast prestressed concrete' -- subject(s): Fire testing, Precast concrete, Prestressed concrete 'Fire resistance of prestressed concrete beams' -- subject(s): Concrete beams, Fire testing, Testing
Who was the Architect known for using precast concrete?
Frank Lloyd Wright
What is the Difference between precast and prefabricated concrete?
Prefabricated is a general term for anything that is assembled in a factory rather than on-site. Precast would be specifically applicable to anything that could be formed in a mold (concrete, perhaps glass, metal, etc.).
When choosing a house what is more safe hollow blocks or precast?
How safe do you want it? I'm guessing by hollow blocks you are referring to Besser blocks. They are safe and if used correctly in the construction of the house will be fine. However, in England i believe it's extremely hard (if not impossible) to get a mortgage on a property built with them. Precast is a modern form of construction similar to in-situ properties era's long gone :). In-situ being the reference to the fact the walls were formed on site or in place. Precast is formed off site to the specifications of the build and put together on site - hence the name - precast. As for which is strongest... Precast is solid concrete and Besser block is hollow concrete. The house i live in now (to my suprise) is made from Besser block. It looks like a normal solid or double brick home from the front and if i tap the inside of a wall it feels solid to the touch (unlike a brick veneer home) but it gives off a hollow sound. If by safe you mean strong then i'd want precast as it's usually made from reinforced concrete.
