How to Keep Concrete Formwork from Failing Out

No doubt, concrete formwork is an indispensable part of modern construction. Moreover, this structural component has been with us in Australia and applies to residential and commercial structures. Notably, commercial buildings have discovered the power in using formwork as an integral part of the foundational structure of building projects. On the other hand, if the foundational system of a building is faulty, it compromises the integrity of such tasks. visit to learn about concrete formwork.

It is an utmost disaster to see a building on which a lot has been invested to give way. On the other hand, the most crucial factor in creating a formidable structure that can stand the test of time is to have the right plan, framework, and design. Next is to use the suitable formwork to begin implementing the program to create the desired structure. Moreover, a statistic reported that the structural formwork accounts for 35-40% of the system’s overall cost.

Formworks can also become either a temporary or permanent structure, depending on many factors. Also, the component is highly instrumental to creating the right foundations with the desired strength, shapes, and sizes. Some of the typical applications of concrete formworks include building columns, beams, walls, suspended slabs (and other types of slabs anyway), staircases, among others. In addition, different materials are applicable in constructing formworks, including wood, steel, aluminum, plastic, and some pre-fabricated modules like the Glass Reinforced Plastics (GRP).

Basic Requirements of Formwork

Formwork is measured by the project constraints such as cost, quality, time or speed, and safety of workers on site. Therefore, before we could ascertain that producing formworks is correct, effective and productive, it must meet the requirements below.

  1. Formwork should prevent any leakage through the sufficient tight joints 
  2. It should also support the weight of the concrete while pouring out the mixture and subjecting it to vibration
  3. In addition to the importance of the concrete, the formwork should bear the weight of all the workers. It should also cater for every other person walking on it (if on the floor as the equipment.
  4. It should have a highly secure foundation or base
  5. It should be able to handle diverse safety measures according to the specifications of the equipment in use
  6. A formwork should allow stripping off from the concrete without causing any damage to the latter.
  7. It should be able to prop and brace the structure effectively either through the vertical and horizontal dimension to maintain it
  8. Formwork should be stable for all kinds of weather, especially to Australian, without any distortion of any kind

Common Causes of Formwork Failure

There are several instances of formwork failure due to different reasons. It may occur, especially before or after the concrete has been poured into the mold. Below are some common causes of formwork failure in construction services.

  1. Flawed design

One of the most fundamental causes of formwork failure is a flawed design that is unstable in meeting structural demands. In addition, the formwork may also collapse because of excessive loads on the structure, especially if the amount of load it will carry wasn’t adequately factored into the design. It could also result from a reused formwork that has a lessened capacity that is difficult for engineers to determine. 

  1. Defective parts

It is also possible that the components of formwork are grossly defective in one way or the other. For instance, infected wooden material may not be the best tool for building timber formwork in construction. The reason is that it may quickly transfer this weakness onto the formwork in a way that causes a lesser quality of formwork in the end. Other defective cases may be due to situations and items such as short bolts or screws, poor welding quality, inadequate nails or splicing, and faulty wedges, which can all compromise the quality of the formwork. 

  1. Improper inspections

Before casting the concrete on the formwork, there is a need for the site engineer, project manager, or supervisor to inspect the quality and standard of the formwork. But in a case where there is nothing of such, some of the errors may be overlooked. At the same time, inexperienced or less qualified personnel may result in other formwork failures.

  1. Inadequate foundations 

Formwork foundations can also be placed on a weak foundation. In such a case, the formwork cannot bear the weight of the concrete. Soft soil or untested waters can also lead to a failure of formwork. They may demand that it be difficult or practically impossible to entirely transfer the structure to another site. A weak formwork may also lack the capacity to stay for long with a weak foundation. 

  1. Premature removal

If there is no professional engineer or concrete company, poor formwork or formwork failure can be inevitable. It may result from premature removal of the formwork on the cast concrete when the concrete is not sufficiently cured at the appropriate time, mainly if it is too early. Many times, this premature removal may occur because of the urgency of shortening the work schedule. But in the end, it jeopardizes the quality of formwork and concrete. 


In modern construction that involves the use of formwork to produce high-quality structures, you need a formwork system as recommended by professionals. Meanwhile, BKH Group Company has extensive experience handling construction projects with utmost consideration to serve all needs. Contact BKH Group today to be sure that your investment into construction is in safe hands. Besides, the company understands the diversity of the diverse formwork systems to produce state-of-the-art edifice. As a project manager, your work includes checking the quality and ensuring that the project is a symbol of excellence in every way. 

How to Build Tunnel Formwork [Full Guide]

One of the classic structures in that project is the world project from the outward and upward direction to create some of the best construction towers. In modern technology, as it applies to creating formwork structures, the strategic factors can help develop formidable output with incredible structural strength and reduce costs. Some of the top commercial edifices may include hotels, private housing estates, and student accommodation. Others include commercial developments, community development, urban planning, and execution. 

How to Build Tunnel Formwork [Full Guide]

What is Tunnel Formwork

Tunnel formwork refers to a box-shaped steel fabricated form, which may include a slab that can be cast into a single operation. In addition, it can also help wall structures in the same project execution. As you reinforce the concrete slabs and walls, you can execute it in a single concrete pour after inputting the concrete mixture. According to modern standards, tunnel formwork can also be highly effective and efficient in repetitive cases as and cellular construction projects

The Significance of Tunnel Formwork 

Tunnel formwork also constitutes a comprehensive and highly systematic provision of an earthquake-resistant construction structure. In addition, it addresses the matter of sound transmission, which can reduce the sound emission level by u to 50 decibels. It also provides heating costs through a thermal mass and enhances the process of construction. Besides, the design is highly constructive, so contractors invest a great of expertise into tunnel formwork fabrication.

The tunnel in this structure also complies with the half units of the inverted L shape. Besides, the two halves are joined at the tip of the tunnel to form a couple or cell. The formwork can also move in and out through the effectiveness of the wheels and jacks. With the proper adjustment, concrete constructors can also be reused for up to 600 times the accurate or actual steel size that makes up the Tunnel formwork. Click here to learn about Hiring a Formwork Contractor in Sydney Australia.

The Process of Casting a Tunnel Formwork

You can choose the right channel for the tunnel formwork while manufacturing the in-situ concrete framework. More so, it has a 24-hour construction cycle and works in 7 significant steps through professional handling. The details are given below:

Stage 1: The first step of manufacturing Tunnel formwork involves prefabrication of wall reinforcement while positioning it correctly. This positioning may require a crane while moving the entire wing of the structure and casting kickers in their best position.

Stage 2: position two and a half tunnels using a crane into the right place where they should be and bolt or tie them together.

Stage 3: pour the mixed concrete into the wall

Stage 4: the fix the slab reinforcements 

Stage 5: Place the concrete slab in its proper place. You can also prepare to pour the formwork system and wrap it in the right place. You may also prepare the concrete pouring into the suitable tunnels while wrapping it up with tarps. The next thing is to supply butane heaters to keep a high temperature for the concrete to reach exceptional strength when you leave it over the night.

Stage 6: Remove the tunnel forms the following day

Stage 7: you can also repeat the same process for the next two days

Tunnel formwork enables the contractors to produce a highly durable quality of cellular structures to meet with the modern architectural designs. The concrete finish is of tremendously high quality, while it does not require much post-construction for plasters and electricians. A nice tunnel formwork can save a cost within the range of 15 and 25% of your total cost. When you also employ contractors with in-depth experience, you can be sure of unique workings to produce high-quality output under ideal conditions. Meanwhile, we strongly recommend BKH Group. 

BKH Group has a professional group of specialist engineers who value the essence of manufacturing tunnel formwork for efficient output. 

Formwork Systems for Engineers

Formwork solutions from top concrete construction engineering firms like the BKH Group include the following: 

  • Civil engineering systems that are ideal for tunnels, bridges, underpasses, and shoring 
  • Climbing systems for the right engineering solution in multiple working platforms and levels
  • Props and shoring systems that are perfect for cover tunnels shoring and provides an excellent option for tall structures
  • Horizontal systems that comprise formwork solutions for the construction of shoring and slabs
  • Vertical systems that comprise of formwork solutions columns, circular walls, piers, and walls

Regulatory Requirements of Formwork

Under the standard protocol, the following are the two most essential requirements of formwork;

  1. Formwork should be rigid, tied, watertight, and braced together to maintain a good position and shape during the construction process
  2. It should also be removable after the concrete must have dried up. Besides, it must also be free from causing damage to the concrete structure. At the same time, the components of the formwork must remain intact at the end of the finished form while the rest can be easily removed from the whole system. 
How to Build Tunnel Formwork [Full Guide]


On a final note, there are different types of formwork, which depend on the type of scaffolding or structure you intend to build in the right way. Any given project can also have its own specifications. Still, the supervisors or project managers must understand the essence of manufacturing quality components to produce an eventually powerful output. In today’s construction industry, there are several reasons why formwork is essential to construction projects. Remember also that formwork includes all forms of the skeletal structure before you pour the concrete into the frames and bracing with the right stability level. In addition to the central system, the other parts include joists, bearers, foundations, footings, and foundations. In addition, modern building technology has influenced the production of many commercial structures, including concrete formworks that can serve the proper purposes and stand the test of time. 

Hiring a Formwork Contractor in Sydney Australia

Whether you plan to build a residential, commercial structure or oversee a giant public project, certain principles are prevalent in making the right choice of the contracting firm. In some climes, the choice of contractors is sentimental and biased. But in Sydney, Australia, building contractors, especially those into concrete structures, must hire the best hands to deliver quality jobs. These concrete contractors must also have a good reputation and the required experience to handle such jobs. Click here to learn more about formwork Contractor.

Moreover, to ease up the matter for the investors and other stakeholders, this article contains a point guide. If you can follow the guide, it will help you hire the best formwork contractor for a project in Sydney, Australia, with peace of mind. Meanwhile, there may be many company options in construction, but you can only hire the best of them. In terms of the diversity of the services that these companies render, you also have various options. In all, you can follow the following details to help your decision.

Steps to Guide, your Choice of Formwork Contractor

1. Choose a Style

The first step to choosing the right concrete company that can handle formwork structural construction is to select a style for yourself. Concrete formwork construction is achievable but has to be relevant to the type you choose for your own project. In some cases, you may easily find the style that fits you; in other cases, you need people to suggest some styles to you before you can choose. Your choice may depend on texture, colors, or patterns you can also find online and some physical construction catalogs before your project.

2. Do your research

The choice of style is related to research that must have started, which means either of the two options is possible. Perhaps, the most accessible place to get adequate information is the web, which you can tailor to give you specific information to help your decision. The research will also increase your chances of exploring the desired qualities you want in contractors concerning your concrete formwork project.

3. Make contacts

It is essential to begin contacting people you find or asking your contacts to submit proposals for the project. Ask any company that thinks they can handle the job to pitch for it. By so doing, many companies will submit different materials for your consideration. Start contacting them and note every relationship from the response time to the follow-up and other business relationships. Some of these properties they have may eventually influence your final decision of the right contractor company to handle the job.

4. Compare your options

When you begin to get responses from different companies of different stature, experience, and proposal, then you begin to compare them. Along with your comparison, you should start sorting them in order of preference. In other words, from this point onwards, you may begin to discard some of the proposals that are too far below your expectation. Check out their submitted proposals and look out for experiences, background, character, and other factors to decide if you are satisfied with what you see. 

5. Check out references and reviews

Now, check the references that these companies provide, which can really give an edge among them. For instance, if you have a strongly recommended company by a partner company to yours, the natural inclination is that you may prefer to work with such a construction company. Of course, your overall choice is not limited to that factor alone. Apart from references that the companies provide, what is their reputation among top companies and previous clients? To answer that question, find out what their previous clients are saying about them. Are there companies of repute who say positive things about them?

6. Review the contract and sign it

When you finally choose the right company that can meet your demands, it is time to prepare a contract. Just before you do so, you can ask to meet with the company’s representative to ask further questions about what things are not too clear. Besides, meeting one-on-one also enhances trust and dependability in partnership. After preparing the contract, kindly review it again, and if you are satisfied, you may append your signature. Conversely, suppose there is a need for some clarifications about the terms of the contract. In that case, you may need the services of a lawyer to review the paperwork. In other words, your lawyer should be on the ground. 

Which is the best Formwork in Australia?

Different formworks are available in construction, and many factors determine your choice of formwork. More so, in Australia, the need or use of the formwork will select the option of formwork that is applicable in different cases. Since the advent of formwork over 300 years ago, the Australian construction industry has dramatically evolved to accommodate different types in their shapes and sizes.

The three most common formwork in Australia includes the following:

  • Insulated Concrete Formwork
  • Traditional Timber Formwork
  • Engineered Formwork

Formworks are extremely important in Australia for diverse reasons. Still, the chief of them all is that it is irreplaceable with modern technologies. Like the engineered formwork structure, some of the common formworks in Australia are even reusable up to a thousand times. As long as it retains its good shape over the years. They are also highly effective in terms of cost, time, and frame fitness in the final structure. 


While searching for a top company that can meet all your needs, you may want to consider BKH Group, a reputable concrete construction company in Australia. This firm has a team of modern qualified professionals who can deliver a high output level for your desired business. You can depend on BKH for concrete formwork contracts for residential and commercial projects and services.