Civil Engineering Firm in Ticino AR&PA Engineering , based in Pregassona, offers high-quality civil engineering services. The firm's professionals specialize in various fields and provide tailored solutions to meet the needs of private clients, companies, and public institutions. View our portfolio and contact us for more information. Areas of Expertise In the field of engineering, we support clients with design services and construction management across all contexts. Specifically in the following areas: • Construction – for private clients and public entities (commercial, industrial, banking institutions, exhibition spaces, sports facilities…) • Structures in reinforced concrete, prestressed concrete, composite structures, and steel (pedestrian and cycle bridges, canopies, road and railway underpasses, viaducts, bridges, centering structures…) • Civil engineering works in superstructure and substructure , roadworks, infrastructure for distribution companies, urban furnishings, drainage systems, pressurized pipelines • Special geotechnical works – piles, micropiles, anchored and nailed walls, Berlin walls, sheet piling, buttressed retaining walls, consolidation injections – for excavations, foundations, and reinforcements (slopes, roads, lake shores) and below-ground works • Structural renovation and restoration of buildings of all types • Special structures such as pontoons and moorings for tourist ports, submerged and floating structures, tensile structures, cable networks, foundations for vibrating machinery, tuned mass damping systems (TMD) Technical Assessments and Safety The firm's engineers also handle all aspects related to the safety and preservation of structures. They conduct technical assessments for evaluating structures, buildings, and roadworks. They specialize in environmental investigations, for example in cases of ground subsidence, flooding, or fire damage. Structural Analysis Among the specialties of the firm, led by engineers Paronesso and Artari, are analyses of: • Static and dynamic structural behavior, both linear and nonlinear • Modal analysis in real and complex domains • Seismic and geotechnical analysis • Structural instability (buckling) • Three-dimensional slope stability • Impact and collision analysis • Vibrations induced by pedestrian, vehicular, and railway traffic • Floating structures To learn more in detail, contact our office via the form or by email. Software Development AR&PA Engineering designs and develops specialized software for the study of: • Nonlinear static interaction between foundation piles for pile group calculations • Sea state modeling for determining wave loads on floating structures • Static and dynamic behavior of moorings composed of catenary chains and dead weights • Dynamic interaction between railway bridges and trains • Dynamic interaction between floating platforms and fluid • Dynamic interaction between structures (e.g., dams) and infinite media (soil, fluid contained in reservoirs)

The execution of thermoclimatic and sanitary engineering services, design, consultancy, appraisals, energy analysis, drafting of certificates of conformity and fire tests. It can buy and sell as well as import and export items of any kind

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ABOUT US With over 40 years of experience, Idrosun SA is today a well-established player in the wellness and building technology sector. Its story began in 1981 with a family vision: to offer tailored solutions that strike a balance between technical innovation and human care. Idrosun SA was born from the intuition of Willi Maag, who founded the company with the goal of uniting craftsmanship, technical expertise, and design quality. Over the years, the company has expanded its fields of operation, integrated advanced technologies, and established itself as a trusted partner for private clients, engineers, architects, designers, and businesses. Today, the company is led by Simon Maag, who took over from his father and now fully owns the company, continuing its development with a forward-looking approach. We are mainly active in Ticino , Engadin , the Zurich/Zug region , and Northern Italy , managing bespoke projects in residential, hospitality, and commercial settings. Thanks to our multilingual team, we communicate daily with clients and partners in Italian, German, English, and French , ensuring smooth and professional collaboration across multiple markets. From the very beginning, our way of working has stood out for its complete and structured method: every project is followed through all its stages – from the first consultation to the execution and long-term assistance – with consistency and care. An approach that has shaped the company’s identity and continues to define how we work. A story that keeps evolving, building new spaces of well-being every day. WE FOLLOW PROJECT STEP BY STEP We are dedicated to the well-being, comfort, and energy efficiency of our clients – both private and professional – combining cutting-edge technology with refined design. We manage every project in all its phases, from initial consultation to maintenance, ensuring rapid intervention and continuous support thanks to our emergency service active 24/7, 365 days a year. TAILORED DESIGN We create exclusive, custom-made environments that combine aesthetics and functionality. CONSTRUCTION AND INSTALLATION From construction to installation, we follow every step with precision. MAINTENANCE AND REPAIR Professional service to ensure durability and optimal performance. TECHNICAL CONSULTING AND AFTER - SALES Expert support for every need, even after installation. PRODUCT AND ACCESSORY SALES A complete range of solutions for the care and management of technical systems. OUR SERVICES Each project begins with the desire to create authentic, lasting, and personalized well-being. Our solutions combine technical know-how with aesthetic sensibility to shape functional and welcoming spaces, perfectly balanced between technology and design. Our work is structured into five main areas, all developed with the same focus on quality, efficiency, and sensory experience: WELLNESS Indoor and outdoor pools, whirlpools and spa tubs, saunas, cryo saunas and Turkish baths, cold plunge systems, biopools and natural swimming ponds. WATER TREATMENT Pumping stations and pressure boosting systems, treatment of grey and clear water, softeners and reverse osmosis systems, water distribution and irrigation systems, advanced filtration systems. HEATING AND COOLING Heat pumps and low-temperature systems, radiant heating and cooling systems, solar thermal systems for hot water production. VENTILATION Controlled mechanical ventilation systems, air treatment and dehumidification solutions, heat recovery for improved energy efficiency. AUTOMATION AND CONTROL Electrical panels and regulation systems, advanced home automation and remote control, photovoltaic systems for energy production. PRODUCTS AND ACCESSORIES Chemical products for water treatment, cleaning robots and accessories for pools and wellness areas, pool covers and safety solutions.