Slipform construction is usually seen as the best-suited building method when it comes to building tall concrete structures. So what exactly does the term slipform mean? Simply put, slipform is the name of the hydraulically controlled formwork into which concrete is poured. Also known as the continuously formed or slipform construction method, it is widely used in construction projects such as bridges, buildings, dams and towers. 

Why is slipforming so commonly used? Undoubtedly, slipform construction is the fastest and most economical method available today for the construction of high-rise concrete structures. The construction process encompasses a continuous concrete pour that sets quickly. As the slip form method greatly depends on the properties of concrete to set quickly, a balance must be maintained between its workability and quick-setting capacity. The different types of slipform construction methods executed by our specialists at Bygging Uddemann are traditional, gantry, tapered and conical slipforming.

Hydraulically Controlled Slipform Method

With numerous technological advancements in modern construction methods, the way companies erect concrete structures has evolved as well. The newest machines and equipment in the market aim to simplify complex construction processes which were followed earlier. One of the oldest and most conventional slipform technology used even today is traditional slipforming. In 1943, Bygging Uddemann invented the hydraulically controlled slipform method that is still used worldwide today. The procedure involves hydraulic jacks along with other equipment to raise the levels of structures. Such a hydraulically controlled slipform method is mainly used for the construction of tall structures such as domes, towers and skyscrapers.

Other slipforming methods

Besides the traditional slipform methods, there are also other methods such as conical slipforming and gantry slipforming.

Conical Slipforming

The conical slipforming method is a more developed version of traditional slipforming. The distinguishing factor between the two methods is that in conical slipforming, the technique involves a change in the length of the cross-section diameter. This is because the variation largely depends on the height of the structure being constructed. It is this change in the cross-section which eventually results in the conical shape of the structure. The conical slipforming method was developed to construct concrete structures, with continuously changing dimensions such as wall thickness. The thickness of the wall depends on multiple factors such as the size of the cone, construction material and the height of the structure.

Tapered Slipforming

The tapering slipform method is used to construct high rise structures to reduce the duration of such projects. In this, the formwork is used with overlapping sections so that one gradually slides over the other. It is commonly found in the construction of chimneys.

Gantry Slipforming

Nowadays, gantry slipform has replaced the traditional slipforming method in the construction of repeated concrete structures like caisson production. It is a more cost-effective option and foregoes the need for dismantling, reassembling as well as the use of cranes. This method has also proven to be more convenient and safer for on-site workers due to the additional space for them to store equipment and move around. The gantry slipform method has climb tubes and jacks outside the caisson geometry, unlike traditional slipform. This facilitates the work to be completed faster with the jack rods lasting for the complete project.

Choose the right slipform construction method for your project

Depending upon the kind of concrete structure being erected, it is wise to consult a reputed construction company on the slipform technology and equipment to be used. Businesses can learn more about slipform engineering by contacting us at Bygging Uddemann for a consultation or to get a quote for tailor-made slipforming methods.