Company building B.T. innovation GmbH in Magdeburg
During the construction of our representative new building in 2015, a lot of emphasis was placed on high quality, with simultaneous cost and time savings. These requirements were met by using a range of our own products, which were able to prove their qualities in terms of quality and effectiveness in this project.
The four-storey building has a net floor area of 1,800 m2 and a gross volume of 7,227 m3. All exterior walls consist of multi-layered precast concrete elements with a facing shell of coloured sandstone-coloured concrete. “Instead of the planned 5 days for the placement of normal prefabricated parts per floor, we only needed 3 days here,” explains the managing director Mr von Limburg, “The crane and the team that erected it cost € 5,000 per day. The two days saved per storey alone made €10,000, which is a saving of €40,000 for 4 storeys.”
During the construction of the new building, all prefabricated parts, both on the outside and inside, were consistently connected with BT turnbuckles. Even the prefabricated concrete parts for the lift shaft were assembled with BT turnbuckles. The BT turnbuckles M20 were mounted in the recesses on the inner support shell, two per wall joint. Due to the assembly without waiting times for joint grouting and reduction of construction time supports, a construction time reduction of two days per floor was achieved. This was particularly noticeable financially because a 120 t crane had to be used for the assembly.
Construction joints of the concrete foundation were sealed with SynkoElast®. This made it possible to replace previously common joint tapes or metal sheets. The result: very high assurance of watertightness and at the same time savings of approx. 30 % due to faster and easier installation.
The facing and load-bearing shells of multi-layer exterior wall elements were connected to each other using ThermoPins. These approved anchors made of GRP significantly reduce heat loss in the insulation layer. Because the ThermoPin® avoids thermal bridges. In addition, there is a material cost saving of approx. 25 % compared to stainless steel anchors.
RubberElast® was used for joints between precast wall elements in the basement. Material cost savings of approx. 20 % compared to an externally visible waterproofing membrane as well as a shorter installation time are the result.
All external wall joints between prefabricated elements were sealed with an InnoElast® C sealant specially modified in colour for this building project InnoElast C can be applied without primer and fully replaces sealants and sealing tapes with a cost saving of approx. 30%.
Vertical joints in areas in contact with the ground were sealed with ProElast® strips and InnoElast® type 1. This system is particularly durable and can withstand high mechanical loads.
The floor coating in the utility rooms was applied with LiquidElast® Type P. The main advantage here: Instead of applying several layers of other coatings, only one work step was necessary. LiquidElast type P is also highly wear-resistant. The material cost saving was over 15% with significantly reduced working time.
Thanks to the flexible use of Syflex® in the construction of the large circular sliding door for the entrance area of the building, the formwork construction could also be carried out more quickly. The formwork is also reusable. The result: approx. 50% cost savings compared to wooden formwork.