Fence construction in Berlin with nearly 40 years of experience: rotec supplies double-bar fencing, manufactures fences and gates to customer specifications, and handles installation. Discover solutions for private properties, commercial and industrial sites, wild boar protection, and landfill enclosures.
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This project example shows a D40 ventilation hood for the underground parking garage ventilation system of an office complex in northern Hamburg. The existing shaft opening was part of the project-specific ventilation concept and was used for air distribution. However, the horizontal grating provided only limited protection against rain, snow, and leaves entering the shaft. For this reason, rotec developed a weather-optimized ventilation hood as a custom design specific to the project. The D40 ventilation hood directs the air through lateral louvered surfaces. At the same time, the slightly domed roof directs precipitation away to the sides. This article explains the initial situation, the structural design, and key planning requirements. Key Points at a Glance: rotec developed and installed the D40 ventilation hood as a custom design specific to this project. Side...
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Ventilation hoods, as elements of urban furniture, combine technical ventilation with enhanced quality of life. This article demonstrates how seating areas, backrests, green roofs, open-air spaces, maintenance access, and appropriately designed louvers are planned on a project-by-project basis. rotec develops and manufactures custom solutions for rooftop terraces, courtyards, underground parking garage ceilings, and outdoor areas.
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The rain resistance of ventilation grilles is an important consideration for exposed facades, plant rooms, data centres, roof hoods and ventilation hoods. This article explains how rain resistance is assessed under DIN EN 13030, what classes A to D mean, why air velocity on the intake side matters, and when drainage channels, drip edges or water-repellent Renson ventilation grilles such as types 450, 450V, 452, 412 or rotec W11 are appropriate.
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Night cooling requires suitable airflow routes and coordinated building openings. rotec explains how airflow performance, RC2 security, weather protection and noise control determine grille selection. Original photographs and a manufacturing video show the practical implementation. Existing documents and known requirements are sufficient for an initial project discussion.
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