Securely scaffolded with 3D project planning
Scaffolding manufacturer ALFIX GmbH combines a comprehensive, innovative product range with hands-on services, simplifying everyday workflows in the construction industry. The renowned manufacturer of façade, modular, mobile scaffold tower and temporary roof scaffold systems has been developing top-of-the-range secure scaffolding solutions for a wide range of construction projects for 75 years.
In doing so, the company focuses not only on the production of modern scaffolding material but also on offering comprehensive customer support through regional contact persons, delivery services as well as technical support through its in-house project department, which helps prepare smooth scaffolding assembly projects by means of project 3D modelling and static evaluations.
ALFIX GmbH also supported GERÜSTBAU WEBER from Zschopau in the planning phase of a scaffolding project at the district administration office in Annaberg. For the implementation of the project, a total of approximately 25 tons of scaffolding material of the ALFIX MODUL MULTI scaffolding system including system independent components were used and assembled. ALFIX’ modular scaffolding system is mainly used for realizing complex scaffold constructions. The connector discs arranged on the standards at intervals of 50 cm provide a high degree of adaptability, which is necessary when scaffolding structures with complicated floor plans and different structural heights.
In cooperation with the scaffolder, the project department of ALFIX GmbH designed a scaffolding concept and various assembly variants for the planned refurbishment of the bay windows. The construction used was developed combining the ALFIX weather protection roof VARIO – in the monopitch roof design – with a working scaffold from the ALFIX MODUL MULTI system.
Scaffolding the recently refurbished façade was challenging in that the renovated thermal insulation did not allow the anchorage to be carried out in accordance with the technical approval and the anchor holes had to be reduced to a minimum.
For this reason, additional support bays were planned and installed, in order to stabilize the working scaffold and prevent it from tipping over. This resulted in a partially freestanding working scaffold braced with shoring towers as a birdcage scaffold with a temporary roof and weather protection enclosure.
Different shoring towers were installed to match the height of the scaffold. For the scaffold with a height of approximately 31.0 m, a shoring tower of 6.7 m long, 2.57 m wide and 13.0 m high was designed. The smaller scaffold with a height of 27.0 m was stabilized by means of a shoring tower of 2.87 m long, 3.07 m wide and 13.0 m high.
In addition, barrier-free access to the building in compliance with the regulations had to be ensured. To achieve this, bridging constructions using ALFIX MODUL MULTI lattice girders 5.14 m were provided, planned and implemented, enabling smooth passenger traffic and access to the garage.
Partial cladding of the scaffold with keder tarpaulins posed another challenge. Enclosing a temporary roof always negatively impacts the tensile forces of the anchoring due to wind loads acting parallel and perpendicular to the façade. There were only two levels available for anchorage to the façade, so anchor points were planned at heights of 11.0 m and 18.5 m. Due to the thermally insulated façade, EIFS anchors were installed to effectively transfer the tensile forces as well as forces parallel to the façade with a maximum factor of utilization.
The working scaffold was designed as a load class 3 scaffold (working load 2.0 kN/m²). The weather protection roof with a span of approximately 6.8 m served as protection against bad weather conditions and driving rain during the construction work. The construction was designed for a service life of approximately 3 months. As a consequence, the snow load could be taken into account in the calculation as a minimum load of 0.10 kN/m², e.g. suitable for heavy rainfall.
In accordance with the Technical Regulations on Industrial Safety and Health, TRBS 2121, access to the construction site was provided by means of the aluminium platform stairways with the appropriate guardrails approved by the National Technical Approval.
For this project, it was possible to combine different scaffolding systems from ALFIX GmbH, providing the best possible scaffolding solution for the planned renovation task and ultimately for the client.
Please visit our website www.alfix-systems.com for further information on ALFIX GmbH scaffolding systems.
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