This is not a snake! Land planarian, Bipalium kewense, on concrete driveway, 2
Image taken on 2008-11-15 11:27:44 by Martin LaBar (going on hiatus).
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Concrete formwork is the use of support structures and moulds to create structures out of concrete which is poured into the moulds.
There are many different types of formwork used in construction, usually differing according to what the building requirements and challenges are. Formwork is used by creating moulds out of wood, steel, aluminium or prefabricated forms into which the concrete is poured. This is then allowed to harden and set after which it is stripped, or in the case of stay-in-place formwork it is left as part of the structure.
Formwork allows contractors to cast and construct the main parts of a building which are required to be strong and support the structure such as floors and walls, as well as smaller parts of a building such as stairs relatively quickly.
Types of Formwork
There are many different types of concrete formwork used in construction. Traditional timber formwork uses timber and plywood to form the moulds for pouring. This method is cheaper than other methods, yet not as effective because wood is not as strong as metal or steel. However, on complicated sections of buildings which need great attention to detail, timber formwork is still widely used.
Engineered formwork systems use prefabricated moulds made from a metal frame, usually either steel or aluminium. Engineered formwork is much cheaper and quicker to use than traditional formwork. The frames are extremely strong and rarely need replacing, reducing costs. Due to the formwork systems being engineered, their construction is faster and requires less manpower, again saving money. Simple structures can be built with re-usable plastic formwork systems (a type of engineered formwork), which consist of strong, lightweight, interlocking systems.
Stay–in-place formwork is used generally for the supporting parts of a structure. This type of formwork consists of insulating concrete forms which are filled with reinforced concrete and once set, are left in place.
About Concrete
In construction formwork, concrete is used to pour into the formwork systems to create structures or parts thereof. Concrete is made of cement mixed with other substances such as limestone, granite, gavel and sand and mixed with water to form a mixture. After water has been added, the mixture undergoes hydration which is the reaction between the cement and water that leads to the hard substance of concrete which is then used for construction.
When concrete is mixed, the success and quality of the concrete in structures is known as workability. Concrete can be made to different qualities depending on the amount of water, the type of water, the shape of the mould, how long the cement has been hydrating for and amount and type of cement contained in the mixture. The quality of the cement is reduced if too much water is included, causing the cement to separate from the other substances which make up the concrete mixture.
Concrete can crack, which was problematic for constructions throughout history as they ran the risk of collapse. Today reinforced concrete is used which is a much stronger substance and rarely cracks. When concrete is reinforced, it is filled with metal rods and reinforcing bars with other materials such as glass and plastic fibre.
Concrete formwork is widely used in present day construction. With the many different types of formwork available, any building project is more easily achievable because different methods can be used to achieve the desired result. When reinforced, concrete is a virtually indestructible material, perfect for major construction work, as well as small, detailed and complex structures.
Cape Formwork Contractors (CFC) is a scaffolding and formwork contracting company, providing high quality concrete formwork services for construction which are safe and reliable, whether dealing with simple or complex structures.
I am removing wall paneling and behind it is a bunch of masonry nails with a very small head. Since they are in my concrete wall and have a small head, I cannot just use regular methods to remove them. How can I remove them so I can still waterproof paint my concrete walls?
revit lcip showin bridge with retaining wall under arch.
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Basement foundation construction using Wall-Ties & Forms Inc. aluminum concrete forming system. More concrete forming videos available at www.wallties.com.
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More efficient and advance with RBM Formwork System for construction project.
-is METAL type formwork.
-built in electrical point and water piping method.
-no leaking etc.
-the proper formwork install training provide.
-a better finishing wall without thick plastering.
Company web:
http://www.rbm.com.my/
Products:
http://www.rbm.com.my/index.php/products
RBM Youtube’s Video
http://www.youtube.com/results?search_query=oxojienoxo&search_type=&aq=f
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Promotional video of the Euromac2 Insulating Concrete Formwork System
Duration : 0:9:6
ReFORM is a reusable formwork system that works in conjunction with ZEGO Insulated Concrete Forms www.zego.com.au
Duration : 0:2:58
The design of the formwork purpose is for easy installation & can be reused back about 400 to 500 times to decrease the usage of wood formwork and save the forest from chopping down the tree.
Advantages:
1. Easy installation with complete assecories
2. 400 to 500 cycle times
3. Formwork design according to standard architecture drawing
4. Fasten the construction project
5. Good quality of finishing
6. Valuable for selling after use
Duration : 0:2:4
TJK large capacity shearline and double bender in operation.
Duration : 0:5:9