Removable and non-removable metal shutter forms
Shutter form consists of metal elements and components, the design of which may vary depending on the proposed project. By shuttering system it is possible to create the desired shape for reinforced concrete and monolithic concrete structures that are built at the construction site.
It is not only small, simple buildings, but also complex, large, tall objects and structures. In the construction of bridges and dams shutter forms are simply irreplaceable.
Construction of shutter forms can be of two types: removable and fixed. A removable formwork system is universal because it can be used for different purposes, for example as formwork of walls, ceilings or foundations. Supporting frame and telescopic props used in the role of vertical bearing elements.
Depending on the material to distinguish several types of formwork: metal, wood, concrete, plywood, combined. The Gost formwork must be such parameters as stiffness, strength, stability (not only in working position, but when mounting and transportation), the invariance of the form. Deck boards should not have burrs, cracks or any other deviation with depth of more than two millimeters.
Depending on construction type, shutter forms could be:
- Fixed
- Sliding
- Rolling
- Movable
- Demountable-mobile
Type formwork system is chosen, once identified with the type and size of design, as well as in the way of concrete and reinforcement works.
Today metal structures are made of steel (galvanized or powder-coated galvanized). It is no secret that this stuff has such important parameters like the highest load capacity and excellent resistance to various deformations.
Formwork can be completely made of steel and is combined with elements of other materials. For example, for the erection of the formwork is also aluminum, to be precise-alloy of silicon and aluminum.
In the end, the chosen material depend not only technical characteristics of formwork design, but also its cost.
Stationary or fixed metal casing consists of shields. After concreting these shields are not cleaned, and remain as anchor elements. To fixed timbering place features such as waterproofing, insulation and cladding. The main advantage of permanent formwork is the light weight, simple technology, the possibility not to use heavy equipment.
Often used in the construction of this type of formwork, as solid a demountable one. Encasing metal structures consist of elements that take a major load boards and support units. A demountable climbing formwork is used for concreting of vertical, horizontal and inclined construction.
