Precast Concrete Technology is a construction technology where
building members such as
walls, slabs, stairs, aqueducts, culverts, and tunnels. In many cases, you see
in-situ concrete work where fresh concrete is filled in the molds at the site and left for settling. This takes time and in this case, of
faster work progress the
structure needs to be cast at another place and then
brought to the site and
fitted with the other members.
Types and Systems:
The precast concrete is also called the prefabricated construction technique. For such construction technology, the building members are standardized in shape and size with pre-determined stress values.
The
prefabricated concrete members are of many types where they are classified in
large panel systems, frame systems, slab-column systems with walls. These systems are nowadays used in
multistory buildings where the
dimensions of the building are
pre-determined and then
fitted on site. The precast concrete work is used most in the bridge and metro rail work. In
Mumbai, you can see the
prefabricated concrete slabs being used in the
metro work where
slabs and decks are
prefabricated.
Advantages:
1. Fewer tools, machinery, and equipment are required
2. Compared to in-situ concrete work, precast concrete work is faster and has less effect on the environment.
3. In prefabricated concrete work, increases efficiency and has high-quality controls and better finishing.
Disadvantages:
1. Skilled workers are needed.
2. Transportation of prefabricated concrete slabs and elements.
3. The precast plant needs to be near the site to lower the cost.
4. Machines such as cranes ad lifters need to place the elements.
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