Encofrado perdido Iglu

18 Application example: cold rooms IGLU’® FORMWORK REINFORCED LEAN CONCRETE COMPACT AND ROLLED FOUNDATION INDUSTRIAL FLOORING IN REINFORCED CONCRETE REINFORCED CONCRETE SLAB WITH MESH Ø 6/20x20 cm SEPARATING SHEET IN POLYETHYLENE THREE LAYERED INSULATION Iglù® has numerous advantages, for example ventilation and is more effective because it creates a single open space under the floor and the air can circulate in all directions. There are also economic advantages due to the ease of positioning and material savings. Cold rooms are used everywhere in the food industry for food storage. They are divided into low temperature (-4°C -30°C) and medium temperature (0°C +4°C) rooms. A common problem associated with low temperature cold rooms is the possibility that the cold is transmitted through the structure, reaching the ground and bringing it to a temperature below zero. The water freezes and, increasing in volume, can lift the fl oor of the cold room, breaking it. To avoid this problem, in addition to an insulating layer it is also common to lift the fl oor off the ground and ventilate it in order to keep the temperature of the cavity above zero and eliminate the humidity in the foundation. To do so using natural ventilation, the under-fl oor cavity must be at least 20 cm high. The traditional system involves creating under-fl oor cavities with a series of pipes through which suitably heated fl uid (air or other) is conducted. Application example: ventilated roof SHEATH RISE BELOW THE IGLU’® DOWNSPOUT DRAIN (with pipe unions and leaf guards) VENT D=8 cm IGLU’® H=8-12 cm DUAL ELASTOMERIC SHEATH (4 Kg/m2 s=4+4 mm) LIGHTENED CONCRETE FOR SLOPES (Average th. = 7-8 cm) THERMAL INSULATOR (th= 4-5 cm) HUMIDITY BARRIER SLAB SAFETY DRAIN (1 FOR EACH DOWNSPOUT) FILLING CONCRETE Creation of a flat ventilated roof on an existing slab: - Positioning of the humidity barrier. - Positioning of the insulating layer. - Creating the sloping screed. - Positioning of the Iglù® formwork H 4, 8, 12 cm. - Positioning of the welded mesh Ø 6 20x20. - Creating the concrete screed above the Iglù® modules. - Screed waterproofi ng. - Creation of the fi nished fl oor. An increasingly important topic over the past years has been the excessive amount of energy used by buildings, a use that can be considerably reduced through an intelligent variation in how Iglù® can be used: roof ventilation. By placing Iglù® formworks on the building's horizontal roof, an air cavity is created that insulates from the heat in the summer and from the cold in the winter, resulting in savings in indoor air conditioning. Tests have been performed on roof ventilation using Iglù®, in collaboration with the University of Malta, which have provided very valid results, combining a summer ventilation system with the closure of air inlets in winter, in order to create an insulating cavity. www.baygar.com