As GÜRBÜZ SCAFFOLDING AND FORMING SYSTEMS, with our 25 years of experience, we design and manufacture 3 different types of tunnel formwork systems in line with the requirements of the construction sector, which is our common denominator.
- GKTS TYPE – Classical Tunnel Formwork System
- GRTS TYPE – Rail Classic Tunnel Formwork System
- GATS TYPE – Heavy Series Tunnel Formwork System

Tunnel formwork system is one of the most important steel formwork systems used to construct earthquake-resistant buildings by forming a monolithic structure by pouring shear wall and slab concretes together.
Although the initial formwork investment cost is higher than other formwork systems and the need to use tower cranes is seen as a disadvantage in the tunnel formwork system, the most important ADVANTAGES of tunnel formwork use in terms of labour, speed and cost are listed below.
- After 10 days of formwork initial assembly, construction speed increases with daily concrete pouring,
- High occupational safety thanks to the scaffolds that are integral components of tunnel formwork and surround all perimeters and cavities,
- Due to the steel surfaces, a highly precise concrete surface is obtained, eliminating the need for rough and fine plastering,
- Long service life thanks to high production technology (400-500 castings),
- With its modular production, it can be adapted to both height and span changes,
- Thanks to the production of reinforced concrete with MM precision; it enables the pre-preparation of rebar in the field and the pre-production of details such as windows / doors / cabinets etc. used in architectural projects.
One of the most important features of GÜRBÜZ Tunnel Formwork System is that our contraframe and scaffolds are disassembled and telescopic, suitable for every project and easy to store.
In tunnel formwork production, 3 mm tempered surface sheet, 50×60*2 mm Box Profiles, 30x60x30*4 mm UPF, 50x100x50*5 mm UPF, 80×80*8 mm NPL, and other materials and accessories are generally used.
Although the initial investment cost seems to be high, due to the above-mentioned features, the tunnel formwork system is at par with other industrial formwork systems after 50-60 uses. In addition, after the end of its service life, it provides a recycling contribution of around 15% with its scrap value.

Tunnel Formwork Prices
Several factors influence tunnel formwork prices. These include the quality of materials used, the size of the project, and the height of the floors. All these characteristics can cause variations in formwork prices.
A cost analysis is crucial when selecting a formwork system. Factors such as materials used, labor costs, and the size of the project are very important. The choice of formwork system depends on the method to be applied, the equipment used, the quality of materials, and the desired concrete surfaces, all of which can affect the price.
In addition, the long-term cost advantages of structures built using the tunnel formwork system should also be considered. One of the advantages of this system, which is the reduction in labor time, has a significant impact on overall costs. While costs decrease with the use of this system, the creation of long-lasting structures is also ensured.
Creating long-lasting structures with this system is only possible through the use of high-quality materials and applied reinforced concrete techniques. The smoothness provided by the resulting formwork system increases the structure’s resistance to external factors. Furthermore, the use of wire mesh protects structures against cracks and deformations that may occur over time. Considering all these factors, although the cost of the system may seem higher initially, the investment pays for itself over time.

