0
Prestressed concete made using high tensile wires which is stressed (as per the design load) before concreting, and post tensioned concrete made of Strands covered with duct, in this, wires/strnads are stressed after concreting then the ducts are grouted using cement slurry..
What else can I help you with?
What best compares scissors and a seesaw?
They are post examples of a fulcrum and lever
What subjects are required to study sound engineering?
That is a broad question but I would have to say some of the most important subjects would be digital audio & theory, a recording class of some sort, depending on which software you, the school or the business uses. Music theory, media arts, and of course math because, audio technology, or sound engineering, media production, music production which are all basically similar degrees are a science.
Explian about cryogenic hardening?
Cryogenic hardening is often referred to cryogenic treatment and cryogenic processing. Using the term "hardening" is not correct. Cryogenic treatment does not increase the hardness of metals (I.E. rockwell hardness). Rather it changes metals on the molecular level so that they perform better. Cryogenic treatment is used for a variety of reasons including improving dimensional stability, stress relieving, increasing wear resistance, and eliminating walk and creep. A typical cryogenic treatment lasts for several days. Metal and steel parts will be put in a cryogenic processor at room temperature. The temperature will slowly be taken down to -300F below. Then it will hold there for 12 to 24 hours depending on the company doing the treatment. After that, the processor will have the temperature raised back to room temperature very slowly. Finally, the parts will be post-tempered to finalize the cryogenic treatment. Cryogenic treatment re-aligns the micro-structure of the metal to improve its structural stability. Retained austenite will be converted to martensite which allows for a tougher piece of metal. The eta-carbides in the metal will become precipitated which allows for a much higher degree of wear resistance. Below are some good sites for additional reference...
Which of these is not an example of how engineering has affected society?
Our understanding of how cancer cells grow and spread
What is non captive power generation?
Non-captive power generation refers to electricity production that is not consumed directly by the facility or entity generating it. Instead, this power is fed into the larger grid for distribution to various consumers. This type of generation often involves independent power producers who operate power plants that sell electricity to utilities or through power purchase agreements. It contrasts with captive generation, where the electricity generated is exclusively used by the producer.
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 the definition of post tensioned concrete?
Post tensioning is the prestressing of a concrete member by tensioning the reinforcing tendons after the concrete has set
Which grade of concrete is used in pre-tensioned prestressed concrete structure?
42 mpa for pre tension and 35 mpa for post tensioned
Difference between pre-tensioned and post-tensioned?
what a wicked page, really helpfull Difference between pre-tensioned and post-tensioned?
What has the author Eric Humphrey Cooley written?
Eric Humphrey Cooley has written: 'Friction in post-tensioned prestressing systems' -- subject(s): Prestressed concrete
What has the author Jun Yamazaki written?
Jun Yamazaki has written: 'Shear and moment transfer between reinforced concrete flat plates and columns' -- subject(s): Concrete Columns, Reinforced concrete, Testing 'A comparison of the behavior of post-tensioned prestressed concrete beams with and without bond' -- subject(s): Prestressed concrete beams, Testing
What are the advantages and disadvantages between post tensioned slab and pre tensioned slab?
post tension: the forces considered as outer force since pre tension forces are internal forces.
In what type of concrete are the tendons also known as the reinfocement cables covered to prevent bonding with the concrete and why?
The tendons aren't concrete, they're steel ropes. They're strung thru tubes rather then being cast into the concrete so they can flex. A cable twists a bit as it flexes, so if it was bonded to the concrete it couldn't flex properly. It would also be subject to corrosion from the chemicals in the concrete. The answer is post-stressed concrete.
How can I replace a mailbox post in concrete?
To replace a mailbox post in concrete, follow these steps: Dig out the old post and concrete base. Install a new post in the hole, making sure it is level. Mix and pour new concrete around the post, ensuring it is secure. Allow the concrete to dry and set before attaching the mailbox.
How do I install a mailbox post with concrete?
To install a mailbox post with concrete, follow these steps: Dig a hole at least 2 feet deep and wide enough to fit the post. Place the post in the hole and ensure it is level. Mix concrete according to the instructions on the bag. Pour the concrete into the hole around the post. Use a level to make sure the post is straight. Allow the concrete to set and cure according to the instructions on the bag. Attach the mailbox to the post once the concrete is fully cured.
How to install a mailbox post with concrete?
To install a mailbox post with concrete, follow these steps: Dig a hole at least 2 feet deep and wide enough to fit the post. Place the post in the hole and ensure it is level. Mix concrete according to the instructions on the bag. Pour the concrete into the hole around the post. Use a level to make sure the post is straight. Allow the concrete to set and cure according to the instructions. Attach the mailbox to the post once the concrete is fully cured.
How many bags of concrete are needed per post?
Typically, one bag of concrete is needed per post.
