• 10 May 2025
  • 1216
Requirements for installing floor formwork
Requirements for installing floor formwork

Since the floor/ceiling of a multi-story building is an extremely important part of the structure, which is constantly subject to heavy loads, only high-quality horizontal formwork should be used when pouring floors.

Before installing the formwork, make sure that:

  • the floor technology is designed correctly (thickness in accordance with the expected load);
  • the formwork will be installed without compromising other work on the project;
  • all safety measures are taken during the work of the personnel.

How is horizontal formwork installed?

First, you should calculate the load that will act on the formwork. Calculate the height of the floor slab, it should be 30 times less than the length of the future floor slab. If the length of the slab is 3000 mm, then the thickness is 3000:30 = 100 mm.

When finished floor slabs are delivered to the construction site, their dimensions are calculated, the optimal height of the slab is set.

You can make the floor higher, but at the same time maintain the thickness to length ratio of 1:30 ... 1:20.

When constructing a floor, the most important stage is the installation of formwork.

Take into account the importance of the operations:

  • Determining the location of the formwork racks,
  • Stable placement of tripods,
  • Installation of heads and forks at the top of the racks,
  • Laying beams in the longitudinal and transverse directions,
  • Installation of support angles, on top of which plywood water-repellent shields will lie.

When installing formwork racks, you should remember not only about the correct creation of auxiliary forms for a horizontal concrete floor, but also about the safety of workers. Some people take boards instead of telescopic formwork racks, often old and dilapidated. But they cannot guarantee the strength and reliability of homemade devices for pouring concrete. Mistakes when installing horizontal formwork can be costly.

Therefore, to create a reliable ceiling, use factory formwork, which will allow you to cast a strong monolith that can easily withstand its own weight and the load that will be applied to it.

Ukrainian manufacturer VIRASTAR produces telescopic formwork racks designed for standard loads, as well as reinforced formwork racks that can withstand a weight of 2500 kg per 1 sq.m.

On our website, you can buy formwork from the manufacturer and receive an official guarantee and quality certificate.

We wish you successful shopping!

You may be interested in the blog "When can formwork be removed?"

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