SCAFFGUARD – effective dust and noise protection on Munich’s Innenstadtring

Special projects necessitate special solutions. Latest statistics say that Munich is among the most aspiring addresses in Germany. Building land and living room is at a premium and space for new ideas a luxury, particularly at the heart of the city. At Thomas-Wimmer-Ring, near the old quarter, a multi-storey car park is therefore being replaced by a modern underground car park with space for 512 vehicles. Above the ground, the space will now be used far more efficiently with two new commercial and residential buildings and additional green areas. The project “Tom & Hilde” stands for optimum space utilisation but does necessitate some special protective measures for pedestrians as well as for the residential area already existing. The building contractor – Wöhr- und Bauer Parking – decided in favour of using temporary noise and dust protective walls to ensure corresponding protection for the surroundings during the drilling and building phase.

The scaffolding company Krämer GmbH was awarded the contract and started at the beginning of April with the assembly of the protective walls and the scaffolding solution, for which the company only had 18 days’ time left. To make sure the requirements were met, managing director Florian Krämer planned to use the new protective system SCAFFGUARD from the Hagen-based supplier scafom-rux. The “hard cover” solution SCAFFGUARD can be applied independently of scaffolding systems and stands out on account of its modular simplicity. The basic components are horizontal aluminium rails that are then fitted with various types of panel elements. In addition, only a few other component parts are needed to find fast and simple solutions to most challenges presented. The effective dust and noise protection features of the system have already proven themselves many times over in demolition jobs. Depending on the panels selected, certified tests have confirmed a noise absorption capability of up to 22 dB at a reading of 500 Hertz. The dustproof performance is ensured by the combination of components and their design.

In the Tom & Hilde project in München, Florian Krämer mainly applied the modular scaffolding RINGSCAFF as the supporting structure for the SCAFFGUARD protective walls. However, due to the local circumstances and requirements, three different design versions were necessary. For design alternative 1, Krämer Gerüstbau built three sections each consisting of an 8 m high section with a scaffold depth of 3 m and a length of 35 m. The sections were then fitted accordingly with SCAFFGUARD aluminium rails and partially printed plastic elements (in the version “clear”) were inserted. Since the scaffold sections were free-standing elements, the 8-person scaffolding team around Florian Krämer planned 80 tonnes of ballast for each. The special requirement for these elements was that they might need to be moved by crane as the building work progressed.

A second protective wall alternative was needed because there was not enough space available around the building site to widen the scaffolding with standard components due to the width of the pavement and cycle path. Florian Krämer together with the engineering company Noack planned a 90 m-long steel tunnel structure so that passers-by could safely negotiate the area. The clearance width and height are 2.00 m x 2.50 m. The individual steel structure elements were anchored in the foundation slab stones. Once again RINGSCAFF modular scaffolding was used as a supporting structure. This was carried by the steel structure and the supporting structure above continued up to a height of 8 m. To enable the combination of modular scaffolding and steel structure, 418 specially manufactured HEB girders were applied.

The third alternative structure extended over a length of 70 m and a height of 4 m and was once again based on the combination out of HEB girders and modular scaffolding. To enable this, steel uprights out of HEB girders were attached to the foundations and then connected by means of standard scaffolding components. The required stability of the structure was ensured by HEB girders.

Florian Krämer: “Our company is oriented to finding and handling special solutions. These are assignments that always excite and inspire us. But it is the requirements of our customers that determine our approach. We shall also live up to this claim in the future.” Moreover, Krämer Gerüstbau ensures planners maximum safety and quality and has even made quite a name for itself for innovative solutions, not least of all on account of the current Tom & Hilde project. In the next two years the modern SCAFFGUARD protective wall will be a part of the urban landscape of downtown Munich. Afterwards, Munich will have become a little more modern and attractive.

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