168 Category 4: Special Projects 4 Acoustics Sails for In Door Swimming Pool ‘Bellamar’ - Schwetzingen, Germany SE Ryklin STATIK Contact Sergej Ryklin Address Liselottestrasse 17 69123 Heidelberg, Germany Website www.ryklin.eu Planning and optimization of steel, aluminium, solid, composite, timber and membrane structures. More than 1,000 different projects processed including residential and industrial buildings, car park decks, pedestrian bridges, swimming pools, silos and membrane coverings for Daimler, John Deere, SAP, DB, Siemens, Henkel, BASF, Bridgestone, Roche, IKEA and a lot of private clients. The philosophy of the Company is to offer flexibility in planning due to integral 3D-Design with the ability to find feasible and low-cost solutions starting at draft stage. Owner City Schwetzingen Architect Richter + Rausenberger Bäderbau Gerlingen General Contractor Planex Technik in Textil GmbH, Ludwigshafen Engineering Office Ryklin STATIK Construction Period 08/2013 - 02/2014 During the renovation of the Public Baths in 2013-2014, a reduction to the massive noise level in the indoor swimming area was requested. The old wooden roof structure needed to be kept, but it could stand only small additional loads. The solution of a membrane covering with acoustics sails in Silent Protect MA 680 was presented as an alternative to the appropriate acoustic plates. The client decided on the sails because of the installation and aesthetic advantages. After surveying the existing structure it was build-up detailed in SCIA Engineer with Structure-, 3D-FreeModelling- and Drawing tools. The environment with the appropriate part of the site structure was exported as DWG/DXF to the Easy software to design the required form for the membrane. The results of the membrane calculations were imported back in SCIA Engineer to design the support frame structure, anchors and edge/corner details. The fully detailed structure was developed into one 3D-Model in order that each distance and height could be considered precisely in 3D-Space. All the overviews, elevation, execution and detail drawings were processed and created in SCIA Engineer with appropriate Modelling and Drawing Tools. The most difficult challenge was to find the right level of pretension to keep the sail even enough and at the same time to limit the anchors reactions on wooden roof beams. The limits of the deformations due to pretensioning during erection have to be considered too.
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