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A family-run firm from Austria with a workforce of 220 employees, KATZBECK has manufactured bespoke windows and doors made of wood and wood/aluminium for over 65 years. KATZBECK products stand for first-rate design, innovation, outstanding quality and green production processes. KATZBECK is your competent and capable partner in all stages of door and window production, from consulting and planning, to manufacture and installation. Open your senses and find inspiration for your home. Select from a broad range of models, colours and forms; create precisely the atmosphere in your ‘four walls’ that best suits your style. Visit our headquarters and production facility in Rudersdorf or one of our eight window studios in Austria.

26. Basic Requirements

26. Basic Requirements of Window Installation: „Window connection“: The “window connection” represents the minimum requirement for standard installation of windows in supporting structures and/or window exchange of existing non-modified walls. The window connection includes fixing the window to the supporting structure, filling the joints, as well as creating the internal and external connections. This window connection has to fulfill all requirements in regard to air permeability, driving rain resistance, and wind stress. Any finishing coat must be applied by the client! The assembly trade is responsible for ensuring the proper connection of the window. All requirements set forth in the Austrian standard (ÖNORM) B 5320 must be heeded completely! „Structural connection“: The “structural connection” includes all connections at various levels and within the individual structural components of the wall and the window; typically a variety of trades are involved here. Therefore it is absolutely necessary to determine, plan and coordinate the services of the different trades, especially their overlap. This work can only be conducted by a “planner” (architect, master builder, general contractor, etc.), as only he will have a general overview of the requirements of the various trades and only he is capable of planning and coordinating the individual craftsman properly! 27. Notes on the Mounting of Components: The fixtures have to be syntonized with the respective wall material and with the subsurface, in order to be able to bear the existing loads. The edge gaps and drill depths of the fixtures have to be tested and heeded, especially for hollow brick walls. Observe the manufacturer’s notes on fixtures (screws)! >=60mm >=60mm 28. Definition of Mounting and Sealing Layers by the Window: Mounting layer (ML): Mounting takes place within the red marked area of the frame. Observe the minimum spacing (10 mm). If screws (especially in the base area) are located in the area of the water outlet, these must be sealed to prevent any water from entering the structural element. 10 10 BE 50 KATZBECK-MANUAL

Insulation layer (IL) / Sound absorption layer (SL): An insulating and a sound absorption layer may be connected along any part of the front surface of the frame and/or parts thereof. WSE/SSE Wärmeschutzebene Schallschutzebene Airtight layer (AL): The internal AL has to be mounted on the inside frame surface and/or the inside front frame surface (in the area of the green marker). Note for planner: observe any applicability of window bars and/or collisions with parts of hinges. Draft proof layer (DPL) / Driving rain proof layer (DRL): The outer draft proof layer (DPL) and driving rain proof layer (DRL) has to be mounted to the external frame area (WOOD NOT ALUMINIUM) and/or on the external front frame surface (in the area of the blue marker). Note for planner: observe any applicability of window bars and/ or compatibility of the pursuant façade system in general. 29. Structural Load Transfers (e.g. Deflections of Lintel): There may be no structural load transfers on the connecting window components. Any deformations e.g. admissible lintel or ceiling deflections have to be able to be absorbed permanently and damage-free through the type of window connection selected. Therefore, it is required to know about any expected deflections when taken measurements for the respective components. If necessary, any required information may be obtained from the architect/planner/structural engineer responsible. Example: • Cavity of 5000 mm width • Expected lintel deflection (e.g. acc. to structural eng.) 25 mm Calculating the top joint: ZExpected deflection (25 mm) + installation space acc. to standard (15 mm) = 40 mm installation space KATZBECK-MANUAL 51

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A-7571 Rudersdorf, Teichweg 6