DUOL 1992 fabric structures price-quality in-house team of specialists own production facility certified quality individual care to clients

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2 DUOL DUOL has been active in the market since 1992 and throughout this period Duol has successfully attained the position of one of the most significant suppliers of fabric structures in the world. Duol's success results from an excellent price-quality ratio which is ensured by our in-house team of specialists, our own production facility and certified quality. With our individual care to clients we are experts at finding the most suitable solution and giving our clients best value. More than 1100 covered facilities across the world have been designed, produced and installed under the DUOL trademark. Our structures incorporate the latest innovations in design, fabrics, anchoring, mechanical, electrical and energy saving systems. We consider it our obligation to continually develop our fabric structures and continuously invest in employees and the latest technology in order to continue to be the perfect business partner for our clients.

3 Every component in a DUOL air dome benefits from over 20 years of experience and high investment in R&D. TECHNICAL PERFECTION DUOL engineers the structure so that it meets the same code requirements established for permanent buildings. All DUOL s constructions are produced according to the European standard EN This standard specifies the necessary safety requirements for temporary installed tents of more than 50m2 ground area In the following areas: design, calculation, manufacture, installation, maintenance, operation, examination and testing. The European standard incorporates the different existing national regulations and guidelines as far as possible. DUOL s final product is certified with ISO management system 9001 as well in compliance with standard EN 13782, means we keep in all calculations reserve as requested with this standard.

4 AIR DOMES A Changing climate no longer guarantees us seasonal weather which is why many investors want to cover their sports areas. Air supported structures are the perfect cover to keep sports facilities operational whatever the weather conditions. With Duol air-supported structures a variety of professional and recreational sports and recreational activities can be played all year-round, in any kind of weather. DUOL Air Domes offer the advantage of quick erection and the possibility of permanent or seasonal use. Air Domes are always cost effective! This is possible due to the fact that air supported structures do not require a concrete, steel or wooden supporting framework. Air is the only supporting system needed. The short investment cycle involved and their long durability ensure cost effectiveness. The special design of DUOL domes gives consumers a large amount of clear span space and the same level of comfort they are used to.

5 AIR DOMES Advantages of the dome: Complete weather protection of the venue Easy installation Fast Assembling Quick dismantling Suitable for large events Easy relocation Big clear span Price performance value of the dome Long life expectancy Natural light inside the dome

6 AIR DOMES Minimum Investment - Maximum returns DUOL air supported structures are revolutionary structures offering unparalleled cost benefits over conventional construction methods. The costs of design, manufacture, site preparation and installation are a mere fraction of a those of conventional construction. Unlike traditional structures, Duol structures also require less paper work.

7 AIR DOMES Seasonal structures Often it is more cost effective to have the air structure in place only for wintertime activities and remove the air Dome during the summer months.

8 During the last 20 years Duol has covered over 1100 sport courts and as a clear market leader, enjoys the confidence of customers all over Europe, Scandinavia, Russia, Middle Asia, the Balkans and the Arabic world. The reason for the success of DUOL turnkey projects is its in-house manufacturing, engineering and design department,along with its team of experienced project managers and assembling personal, who offer unique solutions based on the individual needs of customers.

9 FC LOKOMOTIV MOSCOW RUSSIA

10 BRUSSELS BELGIUM

11 IMATRA FINLAND

12 KEMI FINLAND

13 JANTAR MOSCOW RUSSIA

14 KLAUKKALA FINLAND

15 TROMSO NORWAY

16 DINAMO VOLGOGRAD RUSSIA

17 NIORT FRANCE

18 LAHTI FINLAND

19 HOCKEY ARENA SOCHI RUSSIA

20 TALLIN ESTONIA

21 HVERAGERDI ICELAND

22 ZESKAZGAN KAZAKHSTAN

23 TURKU FINLAND

24 TRONDHEIM NORWAY

25 ATAKOY TURKEY

26 KAUHAJOKI FINLAND

27 KOPENHAGEN DENMARK

28 VALPARAÍSO CHILE

29 Tennis air dome in Russia Some VIDEOS Multisport air dome in Estonia Multisport air dome in Slovenia Handball air dome in France Handball air dome in Russia Football air dome in Finland Multisport air dome in Norway

30 Football EXPERIENCE IN ALL SPORTS

31 Tennis EXPERIENCE IN ALL SPORTS

32 Pools EXPERIENCE IN ALL SPORTS

33 Ice Hockey EXPERIENCE IN ALL SPORTS

34 Multisports EXPERIENCE IN ALL SPORTS

35 Handball EXPERIENCE IN ALL SPORTS

36 Golf EXPERIENCE IN ALL SPORTS

37 DIFFERENT PURPOSE OF USE AIR DOME FOR DIFFERENT APPLICATIONS: Industry, Agriculture, Temporary buildings, Exhibition centers, Civil protection

38 DIRECT SUPPLIER We manufacture, install and maintain the products we sell. We are not simply brokers, selling components manufactured by others and relying on a disconnected group of vendors to perform the follow up and warranty services demanded by an air, frame or tension structure. Our manufacturing process utilizes the best quality materials and ISO 9001 production quality guarantees the best product warranty of its kind.

39 DIRECT SUPPLIER Duol does not sew or heat seal together its fabric. We use Electronic high frequency (HF) welders to attach fabric panels in a way that replicates the original strength of the fabric. This increases the life of the structure, prevents undesirable air loss, and eliminates costly maintenance and repair. DUOL production facility

40 DIRECT SUPPLIER Duol directly provides you with: A foundation design manuals, technical characteristics, sketches, certificates, structural drawings, calculations, and more. sealed by a professional engineer to assist the owner in obtaining all necessary certification In the early stages the Duol team can also calculate the estimated total energy usage.

41 Duol provides you with all structural drawings and calculations.

42 Duol provides you with all structural drawings and calculations.

43 CUSTOM DESIGN Custom design Do you need to design a fabric structure to meet certain thermal specifications? Do you want a specific shape of dome? Need a specific colour? Duol s proprietary, high strength fabric has a wide variety of options available to meet your needs and Duol engineers are there to assist you. We understand our clients and we propose a solution to meet the specific requirements of the given project. Whatever combination of activities you desire for your facility, we can provide you with a turn-key, custom designed, air-supported structure to cover it. Utilizing our proven technology, we are able to cover an area of practically any reasonable size, be it a single tennis court or a large football pitch.

44 STANDS, SHOWERS, CHANGING ROOMS Duol can supply all the elements (stands, offices, changing rooms, toilets, ) necessary to provide a finished product for recreational or professional use.

45 STANDS, SHOWERS, CHANGING ROOMS

46 QUICK INSTALLATION Quick installation After design approval we design, manufacture, and install turnkey structures in a matter of weeks. Installation is simple, quick and cost effective. The dome is handed over to the client after a detailed maintenance course with complete operation and maintenance manuals for the air structure, covering the equipment included.

47 INSTALLATION PROCESS 1. PREPARING THE FOUNDATIONS Preparing foundations, drilling and inserting anchors (built in anchors are added when filling with concrete). 2. STRETCHING THE MEMBRANE During stretching and joining the membrane process, additional help from local people is required (usually 10-25). Pallets containing the membrane are placed in the right position by a crane or fork lift. Before putting the doors in place, their foundations must be ready.

48 INSTALLATION PROCESS 3. INSTALLING THE HEATING- INFLATION UNIT Before installing the heating-inflation unit the foundations must be ready with all necessary electric cables and pipes for fuel or gas. 4. ANCORING THE MEMBRANE The anchoring system depends on the type (seasonal or permanent) and on the size of the air dome. Pipes or L bars are usually used for fixing the membrane.

49 INSTALLATION PROCESS 5. INFLATING THE DOME Inflating of the dome is done in windless conditions. Inflating takes minutes depending of the size of the structure. 6. INSTALLING THE LIGHTING To install direct lights, the dome must be deflated. This procedure requires the same conditions as needed for inflating the dome.

50 AFTER SALE SUPPORT After you purchase a Duol air dome you rely on the most experienced group of professionals in the world. For all of our customers, we are available 24 hours a day, 7 days a week. Our after sale services include: Seasonal air supported structure installation and takedown Yearly maintenance Air supported structure inflation system maintenance and servicing Inflation system retrofitting Heating and/or cooling system maintenance Fabric retrofitting Emergency maintenance Air supported structure relocation & moving

51 AIR GENERATORS AIR GENERATORS We are the only fabric company designing air generators specifically for air domes. DIRECT SUPPLIER Each Duol air structure is equipped with a mechanical system that is customdesigned to fit exact specifications to maximize energy efficiency. Duol air generators are started-up and warranted by Duol s factory-trained and authorized technicians. DUOL air generators production facility

52 AIR GENERATORS DIRECT SUPPLIER By designing our equipment specifically for use with air supported structures, we have refined our controls, air distribution and quality to be the best in the industry. Benefits of Duol custom designed air generators: Improved modulating system (up to 35% saving) Smart energy-saving mode In calm conditions, blower units operate at only 50% capacity, greatly reducing running costs High efficiency heat exchanger Reduced hot air stratification Mounted on an anti-vibration base - silent operation Insulated sandwich panels resistant to extreme low temperatures Other Quality stainless steel frame Different energy sources: gas oil, hot water, electricity, gas, pellets Control panel on board Easy manual operation Environmentally friendly with zero carbon monoxide (CO),minimum nitrogen oxides (NOx) and low carbon dioxide C02 emissions

53 EMERGENCY UNIT Reliability and safety are the most important features of Duol structures. The emergency source of power is a critical item that must not be left to chance. Duol emergency units, especially designed for air domes, include three models: SD 1 SD 2 SD 3 The difference between the units is in the flow of air. Each model has three possible versions: STANDARD STANDARD + ANEMOMETER MODULATING DUOL air generators production facility

54 ELECTRIC GENERATORS Our electric generators provide a continuous and alternate supply of electricity with auto start function, and automatically shutdown when returnquality power on. Generator can be used as only back-up unit or as constant source of electricity. Standard generators have h autonomy, which can be extended up to 100h, and more. Implementation of the generating set is stable, closed - engine generator group is embedded in sound insulated waterproof case. Operating and start-up temperature is from -55 to +55 C. Generator is managed by the control panel, mounted on the unit, with the possibility of remote monitor and control by computer. Aggregates are equipped with tested and reliable engines of well-known manufacturers (Iveco, Cummins, perking, Volvo...) and alternators (Mecc Alte...), which have service network practically all over the world. Based on the project location, most appropriate engine is used.

55 ENERGY SAVING OPTIONS Wind speed detection system Our wind speed detection system is the most advanced automatic system available. It uses modern computerized controls for interior pressure, heating and monitoring. The emergency unit is switched on by the system in the case of strong winds, in order to maintain the right pressure inside the air dome. Air generators with modulating system The control system proportionally decreases or increases the burner s heat output as the appliance's temperature approaches the set point. There is an automatic variation of the burner s heat output depending on requirements. With this system you can optimise consumption. This system provides up to a 35% saving. (In a non-modulating system there is only one firing rate; on or off and it fires at its maximum rate whenever the burner is on.) De-stratification system The De-stratification system improves temperature distribution in the space and reduces the time needed to reach the Ta, this in turn reduces the time the heaters are turned on. It is designed for quiet operation. Without De-stratification system With De-stratification system

56 ENERGY SAVING OPTIONS DUOL Intellergy DUOL Intellergy is an innovative solution for supervision and automation of air domes. The installed programmable logic controller (ComBox.M) interacts with different air dome systems and is used for supervision, automation and control solution. Once connected the users have easy access via web cloud base application GemaLogic and smartphones. Available for ios and Android

57 DUOL DMS TM DMS TM (Double Membrane System) is Duol innovative solution with specially designed air pockets which greatly reduce energy consumption. DMS TM comes with three variants. Standard DMS TM provides thermal insulation of 3.05 W/m2K, while DMS Plus TM provides thermal insulation down to 1.74 W/m2K and E-DMS Plus TM down to 1.43 W/m2K (measured by independent test institute). DMS TM thermo (Double membrane system without thermal bridges) is available for best thermal insulation.

58 FABRIC CHARACTERISTICS Standard Duol membranes are UV resistant, but with use of a special lacquer finish like PVDF TiO² this resistance is even better, which increases the material's quality and lifetime.

59 DURABILITY / LIFE EXPECTANCY In DUOL double membrane systems, the replacement of the membrane is not required and the life expectancy is extended to 40+ years based on tests, experiences and existing projects. NATURAL LIGHT As both membranes are highly translucent, the use of a lighting system is not required during the daytime, which leads to big savings on electricity. FIRE RESISTANCE All membranes are fire retardant, certified by the following certificates: M2/NFP , TEST 2/NFPA 701, CSFM T19, B1/DIN , BS 7837, B1/0N0RM B , M2/UNE , VKF 5.3/SN and others. RIGIDITY With mechanical resistance and specific porosity design, our fabrics provide excellent dimensional stability, structural strength and wind protection. Thanks to the DUOL expanded double membrane system, the DUOL domes are very rigid and vandalism resistant. In case of any damage to the outer membrane, the inner membrane will remain air tight and retain its pressure and stability. FABRIC CHARACTERISTICS

60 FABRIC CHARACTERISTICS STORM PROTECTION A DUOL dome has an automatic safety back-up system, which controls the air dome pressure and stability in case of storms and high winds. SNOW The shape of the air dome is designed to withstand local weather conditions. A totally flat surface and lacquered finish, ensures that the snow slides off the air dome. CONDENSATION Thanks to excellent insulation, achieved by the DUOL expanded double membrane system, there is no condensation inside the air dome. ENVIRONMENTAL COMMITMENT Lightweight and durable, Duol fabrics are also 100% recyclable.

61 FABRIC CHARACTERISTICS DUOL implements an advanced membrane coating, which is selfcleaning to preserve a perfect white colour membrane for many years and for many dismantling and assembling procedures. AESTHETIC PERFECTION Duol membrane technology guarantee that DUOL air domes are objects of admiration among visitors and the local community and are places where people love to gather. YOUR BENEFITS: High and consistent transparency & luminosity Whiteness, visibly cleaner surface Greater resistance to chemicals Lower cleaning costs Ecologically friendly due to reduced energy consumption and water usage for cleaning Folding of the membrane doesn't cause damage to the coating materials. This offers easy storage of the membrane during seasonal removal.

62 ENERGY SAVING OPTIONS Transparent membrane Playing indoor while having a 360 degrees panorama view. Attractive design from inside and outside: The transparent air domes offer an indoor view while catching views from people outside. Duol transparent membrane offers, best on the market, 64% lights transmittance. Due to the high transmittance of daylight, lighting costs can be reduced which in turn will contribute to saving energy.

63 SPACEDOME TM The SpaceDome TM insulation system developed by Duol is the only air-dome insulation system to efficiently reduced all three types of heat transfer: conduction, convection and radiation. It is made from high-tech materials developed for space technology with the lowest thermal conductivity of any solid material. The SpaceDome TM has a better thermal performance than the standard double membrane system. With the SpaceDome TM system, air dome heating and cooling costs are reduced to the level of a conventional building, which is an outstanding achievement. SpaceDome TM is made from high-tech materials developed in space industry.

64 SPACEDOME TM Outer shell dome Outer air layer shell dome SpaceDome TM is made from a 7 layer system which is specifically designed to reduce convection, conduction and radiation. Encapsulation SpaceDome TM Encapsulation Inner air layer shell dome Inner shell dome

65 SPACEDOME TM 1) Pure material delivered from factory. 2) Production of 7 layer system. 3) SpaceDome TM insulation is ready for shipment. 4) SpaceDome TM during the installation process. 5) The Worlds most energy efficient air dome is finished - Trondheim, Norway.

66 ALL WEATHER COMFORT The Duol DMS TM membrane system provides resistance to harsh climatic conditions and ensures high heat insulation. For maximum energy savings, DMS TM Thermo and SpaceDome TM insulation system are available. Duol heating units safely and efficiently heat the air structure to the desired temperature and humidity. The Air conditioning system is also available and is custom-designed for each project s specific requirements.

67 ALL WEATHER COMFORT DUOL air domes are located around the world in a variety of climates: From cold and windy Kamchatka to Hot deserts in the Middle East. DUOL air supported structures are designed according to local weather conditions and are engineered to withstand the most adverse weather conditions as well as natural disasters.

68 EXTREME WEATHER CONDITIONS Hveragerdi, Iceland Kamchatka, Russia Air conditioned air dome in Middle East Duol are experts in designing air domes for extreme weather conditions. We enhance all elements (membrane, air generators, anchoring system ) to withstand extremely low or high temperatures with strong winds and heavy snow.

69 EXTREME WEATHER CONDITIONS Duol advanced technology allows installation of air domes in extreme weather conditions without any cable support. Only two Duol air domes are supported with cables - air dome in Hveragerdi, Iceland and air dome in Kamchatka, Russia, where winds quite often reach speeds of more than 50 m/s, along with heavy snow fall. For most other climate areas there is no need for cable support with Duol technology.

70 DUOL DOUBLE MEMBRANE SYSTEM vs CABLE NET SYSTEM INSULATION The DUOL double membrane system provides excellent thermal insulation from 3.05W/m2K to 1.43W/m2K. This is achieved by inflating the space between the two membranes with air (approx Pa, compared to the pressure inside the air dome). This slight overpressure ensures that the membranes are always inflated, whilst the static air is an excellent insulator. Compare this to the cable net system, which has a total inflated thickness of only a couple of centimeters, and offers very poor insulation. DURABILITY / LIFE EXPECTANCY In a DUOL double membrane system, the replacement of the membrane is not required and the life expectancy is extended to 40+ years, based on tests, experience and existing projects. Compare this to the cable net system, where the layers have to be replaced every couple of years, due to friction between the cables and the fabric. INTERNAL PRESSURE The pressure kept in the DUOL domes is minimal, Pa in normal situations. This ensures perfect stability in all weather conditions and less energy consumption. Compare this to the cable net system, which due to its cables weight requires much greater internal pressure ( Pa) which leads to much greater energy consumption. CONDENSATION Thanks to the excellent insulation, achieved by a DUOL double membrane system, there is no condensation phenomenon inside the air dome. In a cable net system, because of poor insulation and big thermal bridges, there is a big risk of condensation on the outer side of the dome.

71 DUOL DOUBLE MEMBRANE SYSTEM vs CABLE NET SYSTEM LOSS OF TRANSLUCENCY Duol fabric has self-cleaning characteristics and is absolutely maintenance free. The cables on the outer side of the membrane of the cable net system prevent the dirt and microorganisms from sliding off the surface. Dirt cannot be totally removed, therefore translucency is reduced. This causes a greater cost for the client. RIGIDITY Thanks to the DUOL expanded double membrane system, the DUOL domes are extremely rigid and vandalism resistant. In case of any damage on the outer membrane, the inner membrane will remain air tight and retain its pressure and stability. With the cable net system, if there is any membrane damage there are big air losses and the structure stability is jeopardised. SNOW The shape of the air dome, which is designed to take into account size and weather conditions of the location, has a totally flat surface and lacquer finish, which ensures that the snow slides from the air dome. Compare this to the cable net system, where cables on the outer side of the membrane prevent the snow from sliding off the surface, which leads to snow accumulation and consequently to the collapse of the air dome. SEASONAL INSTALLATION / DISMANTLING As two membranes are welded together, the installation process is extremely fast. The membrane only needs to be spread, connected and anchored before the erection of the dome can take place. This operation only takes a few hours. It is the same for seasonal dismantling. As the cable net system requires spreading of different layers, connecting them and the installation of metal net, the installation/dismantling process is significantly longer and the costs are higher.

72 AIR DOME ELEMENTS

73 LIGHTING SYSTEM The Duol high intensity metal (halide) lightning systems utilise highly efficient optical reflectors to provide maximum light uniformly across the playing surface. The inner ambience of the dome is lit by the correct quantity of the halogen lamps in two different modes: directly or indirectly. With direct lighting, the lamps are mounted on to the membrane. This lights up the sports field directly. With indirect lighting, the lamps are installed onto metal poles.

74 LIGHTING SYSTEM In order to maximise the amount of light in the dome, we design our lighting system to reflect off the curved dome surfaces and bounce light back to the floor. The key is the highly reflective fabric liner which was specifically formulated for this purpose. Benefits of DUOL lighting technology: High optical efficiency Highly durable, low maintenance Energy efficient Eco-friendly Natural spectrum light Heat, dust and moisture resistant

75 LED LIGHTS From single tennis court to football stadium and everything in between, effective and durable lighting solutions are important to ensure that the game goes on regardless of the conditions. Duol s innovative DuoLed TM lights are ideal solutions for all sport sizes, environments and conditions. In addition to the huge savings in electricity, DuoLed TM also offer significant savings due to reduced maintenance and replacement costs thanks to Led s durability and longer lifespan. We replaced the traditional lighting with DuoLed TM. Previously, the power consumption was higher than 5 kwh and the average illumination was not satisfactory. The old lights were close to end of their life cycle and seldom exceeded 200 Lux on the ground. By adopting the DuoLed TM, lights the tennis court is now using less than 2,5 kwh with over 350 Lux average lighting and remarkable uniformity.

76 LED LIGHTS Advantages of DuoLed TM : - High uniformity and energy saving (between 50 and 75%) - Reduced glare - Solid State Components (high resistance to accidental damages) - Life cycle higher than hours, against the average 8.000, - Lower maintenance cost - Greater consistency in light delivery over the time - No warm up time, instant light up - No emission of UVA and UVB rays, doesn t contain hazardous substances - IP65 certified for outdoor use The higher investment costs of DuolLed TM (blue line) is repaid in two and a half years on average (exact time depends on local electricity price and on light usage per day).

77 ANCHORING SYSTEM There are many ways to connect the membrane to the concrete beam. Rings with a peg crossed by a metal tube or a grounding anchor with a metal tube are used for temporary assembly for seasonal use of the dome. For permanent assembly the anchoring is done by metal profiles. The anchors are mounted into a concrete beam at a distance 1m, around the perimeter. The anchoring in some situations could also be done by auger anchors, without any concrete foundation. Auger anchors are fitted directly to the ground in the depth of 2m. With the DUOL advanced anchorage system, air loss around the base perimeter is greatly reduced, providing savings on inflation.

78 ANCHORING SYSTEM PIPE SYSTEM Small to medium domes Fast installation / dismantling

79 ANCHORING SYSTEM L OR U PROFILES SYSTEM Medium to large size air domes Perfect tightness

80 The DUOL anchorage system is designed to leave no protrusions above ground when the structure is removed. ANCHORING SYSTEM

81 ANCHORING SYSTEM The membrane can be anchored into a concrete beam with use of special ground anchors, fitted directly into the ground. With ground-anchoring system there is no need for concrete beam.

82 For large air structures and many seasonal structures, it is desirable to limit the size of a single section of the fabric envelope. A series of long aluminum or wooden bars create an air and water tight flexible seal that is covered by heavy duty fabric to eliminate leaks. SECTIONAL RECONNECTION

83 REVOLVING DOOR A unique feature of air structures is their doors which are specifically designed for a continuous positive pressure environment. There are three main types of doors used in air structures: Revolving Doors for normal entry into the dome, Pedestrian Doors and Emergency Exit Doors. Revolving Doors are specifically built to withstand the building pressure pushing in both directions on the panels without fatigue failure. Brush seals minimize air losses whilst maintaining a smooth operation. The doors include large glass panels in order to see other users and the housing is made from maintenance free aluminum.

84 PEDESTRIAN DOOR Pedestrian Doors are used for wheelchair access, and deliveries. They are suitable as an entrance for disabled people. Two doors are built in a frame with a short connecting tunnel creating an airlock system, thereby maintaining the building pressure and minimizing air loss. The frame and doors are also built from aluminum for long life and include vision panels for safety.

85 Standard dimensions are 143cm x 220cm. The frame and the door leaf are made of metal. The door leaf has small circle window. EMERGENCY DOOR

86 TRANSPORT TUNNEL Large equipment such as trucks can be brought into air structures by the use of a transport tunnel. Two large overhead doors at each end of the tunnel are interlocked so that only one door may be open at a time. Transport tunnels use high strength doors and are available with remote control switches and key locks. The roof of the metal construction is covered by a polyester fabric coated with PVC foil. The walls of the tunnel are enclosed by metal sheets.

87 WINDOWS Although the air structure fabric is translucent, it is not transparent. Even so, windows are an optional feature.

88 Air structures can be attached to other buildings in a variety of ways. CONNECTING OPTIONS If the need arises for a larger facility, expanding or modifying an air structure is a simple procedure and can be accomplished with minimum disruption. Our dome can be shortened, prolonged or relocated at any time. Doors, tunnels and connections to buildings can be added at any time.

89 Dividing curtain splits your exercise area into more units. DIVIDING CURTAINS

90 CUSTOM DESIGN Air Dome Personalisation With DUOL air domes it is possible to place advertisements / logos on the air dome. They can be various sizes and colors.

91 AIR DOME ADVANTAGES Safety View The air supported structure is an autonomic object, meaning in an emergency situation it is maintained by itself. The emergency heating unit provides stability to the dome in case of a blowing unit fault or in case of an electricity break-down. Each dome is equipped with a certain number of emergency exits according to the dimensions and purpose of the dome. The fabric is fire-retardant and all mechanical equipment meets relevant standards. The unique structural design of the air dome allows it to with stand heavy winds and snow and, unlike conventional buildings, there is less danger of collapsing debris in an earthquake. ENERGY AUTONOMY SEISMIC SAFETY WEATHER RESISTANT APPROVED AND VERIFIED CALCULATIONS SAFETY DESIGN AND PLANNING

92 WeCare WeCare At DUOL, we strive to reach the highest level of quality in our business and we aim to make sure that your decision in choosing an air dome will be as easy as possible. We Care about our Clients. WeCare is a concept developed especially with our clients in mind. Quite simply, our goal is to make it obvious to choose an air supported structure as a solution to your needs even if you don't buy it from DUOL. We invest a lot of time and resources in developing new technical innovation as well as finding green orientated, client-friendly future solutions for all levels of our operations. WeCare is our promise to you, that you will get from us the very best product, designed exclusively to fit your needs. Dušan Olaj CEO

93 Duol d.o.o. Kapalniska pot 2, 1351 Brezovica, Slovenija Tel: +386 (0) Fax: +386 (0) duol@duol.si