Precast concrete is truly an economy of scale, which makes it ideal for businesses and contractors of large-scale construction projects. Precast concrete is often stronger than cast-in-place concrete. Not only are precast concrete products already reinforced with steel rebar, but the controlled curing process also ensures that the concrete will set correctly under ideal conditions for maximized strength. Precast concrete can also be stress-tested before being delivered to the final job site.
Another advantage of precast concrete is its higher standard of quality control. Because precast concrete forms are created offsite, all products are inspected for defects before shipping out. The controlled process also eliminates unknowns related to temperature, humidity and imprecise tools. Choose TDS for your future concrete needs. Our precast concrete products are made with more sustainable materials, such as recycled concrete and glass, to improve product quality and durability, which can help support projects aiming for LEED certification.
Again, because this process is outsourced to the factory with precast concrete, your job site will be much more time and cost-efficient. Cast ahead of time: With precast concrete, you can do the casting of your materials ahead of time, holding them until they are needed. Unfortunately, overlapping tasks and improving efficiency is all but impossible with site cast concrete. Because of the amount of space and labor required for on-site casting, you generally have to stop construction while you wait for your materials to be ready.
This is a costly way to stand around and wait. Weather: An unexpected rain storm can grind construction work to a halt if it occurs when you are doing site casting. If it is raining when your precast slabs arrive on site, you can lift them into place just as you would during a sunny day. Insulation: Because precast concrete is factory made, certain elements can be incorporated within the concrete that cannot be added to site cast concrete.
Added insulation is one of the most common elements. By adding additional insulation materials within the concrete slab, you can save both labor and architectural design space when constructing a building. Rather than hanging and lining the interior of your building with insulation, the slabs that you lift into place with have the insulating power of traditional concrete with additional hung insulation.
As more builders are chasing green ratings for their building, both for the good PR and the energy savings over the life of the building, precast concrete offers a distinct advantage. Specialized reinforcement: Finally, just as specialized insulation can be added to precast concrete, specialized structural reinforcements can be added as well.
By decreasing the amount of material needed to make a building structurally sound, you are saving money while being less taxing on the resources available. Furthermore, specialized high strength concrete requires exacting conditions for both mixing and curing.
These conditions cannot be controlled on site. However, because factory construction allows for heightened environmental control, you can use specialty high strength concrete for your construction. Again, this allows you to create architectural designs that cannot be achieved any other way. There were two main concerns when constructing this building using precast concrete: design and safety.
As an art school, design was important. The building had to speak to modern aesthetics and create a learning environment conducive to exploring the possibilities of visual art.
But as a school, student safety was paramount. This type of system has a superior fire resistance rating. Because this building was being added to a pre-existing campus, its design had to blend in with other buildings on the campus.
While precasting was still used throughout, it did involve a custom concrete blend. Furthermore, because Hershey Medical Center is a rapidly growing invaluable medical resource for the surrounding area yet, building schedules were quick, and the construction was completed in 4 months.
New retail constructions are often completed as part of large scale development in which land is plentiful. The mould for the precast components can be used for a large number of repetitions, thereby reducing the cost of mould per unit. Whereas, in case of cost in situ concrete the reputations of shuttering are very less as compared to precast. So, if limited standardization and repetition occur, then custom situ method will be more beneficial.
Read Also: Formwork Shuttering! Components and types of formwork. Precast concrete requires heavy machinery and cranes for handling which is lifting and installation of heavy elements. In the case of precast concrete, there are lots of choice instructional systems. In precast concrete construction, detail said the joint becomes very critical and needs careful attention. Whereas in case of the cast in situ concrete, less number of joints will be present in the structural system and no serious attention is required for joints.
Precast concrete members are less resistant to earthquake and wind forces. Precast concrete construction wastage of materials is negligible as compared to cast in place concrete.
Whereas in case of a cast in place concrete method the wastage is more real. Precast structural members can be reused extended and refitted internally because structures do not need to be demolished and can simply be renovated internally conserving resources reducing waste and landfill. In case of precast method, there is no need for very less space is required for storage of materials and formal you can order this talk of precast members from the factory as and when required, so, it saves space.
Whereas, in the case of the cost in situ method, you have to keep his price result for storage of materials. Compared to the cost in situ method precast method uses less cement, less water, less steel, and less labor as it is factory-made for the production of precast concrete, advanced mix designs, and better vibrations are used.
In the case of the precast concrete method strength test is carried out at the factory. Hence, an on-site strength test is not required. On the other hand, concrete on-site strength tests are extremely important for ensuring that your building is safe.
So, if you are going on-site casting, then this is this tape that cannot escape. On precast walls due to plain surface less quantity of plaster shall be required as compared to cast in situ. On the other hand, in the case of custom place concrete construction, it is a little difficult to get the plain finish on walls.
Hence more quantity of plaster shall be required. Until here we discuss both precast and cast in situ concrete. There is a lot of advantages of precast concrete, Here, may you think then why not use mostly precast concrete instead of the cast in situ concrete method? To carry out precast concrete construction, transportation and shifting costs are more because of long distances from the factory very few precast plants are available.
The site casted concrete is affected by weather conditions, wind humidity, not proper curing, improper mixing of concrete due to less skilled laborers, which helps to decrease the durability of a structure. Also site cast concrete is depended on weather condition which causes the delay of construction project.
But in the case of site-cast construction, the transportation cost is very less which makes structure cost-efficient. And the joints in the structure are also less which makes a structure more desirable as per earthquake point of view.
Cast-in-situ concrete is a type of concrete which is prepared, poured, cast, and cured at construction site. Precast concrete construction is beneficial for large and rapid construction, where site cast is suitable for small and medium constrution.
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