Fixed shapes are given by concrete in the temporary structure of wood, plastic or iron. That is, the form is opened after the concrete made of necessary energy. That is, temporary support of construction structure, the _concrete is established by making it hard and mature, it is called Formwork or Shuttering. The form of work open and removal is usually called stripping. Two types of Form_work in concrete construction according to use.
1. Panel Form: After stripping the structure of the form_work is removed and the structure is used for elsewhere. The form works sections that can be used multiple times to say panel form.
2. Stationary Form: The form_work is used only for a form_work or is not reusable, it is called the stationery form.
The Classification of Formwork According to The Building Materials:
Ply Wood Form_work.
Timber is the most used in form_work.
The Disadvantage of The Wooden Formwork:
Sometimes the work of wood form is curved.
Sometimes the form of wood form swells.
Sometimes the work of wood form shrinks.
This error can be removed using the secure coating. This coating eliminates the ligaments of concrete, so the tripping work is easy. Although the steel formwork is expensive, steel steering is also used in a big project.
The Advantage of Steel Formwork:
It can be used multiple times.
It’s easy to stripping.
Provides flat surface and smooth surfaces of concrete.
It is free from being bent or compressed.
It is water resistant and does not absorb water from concrete.
Its construction techniques are easy and easy to open.