Disposable formwork for ventilated under-floor cavities.
Iglu’® is a market leading product that was created and patented for the realisation of sanitary spaces, ventilated cavities, under-floor cavities, ventilated floors and roofs during the construction and restructuring of civil and industrial buildings. This result of an ingenious idea dating back to 1993 considerably improved building methods. The innovative capacity of Iglu’® has received numerous successes and recognitions on a national and international level, quickly confirming it as a product of excellence in the building world.
The modular, plastic Iglu’® formworks, placed side by side in sequence according to a predefined direction, make it easy to quickly create a self-supporting pedestrian platform above which a layer of is cast in order to easily and economically create a ventilated slab placed on pillars with the below cavity area available for the passage of systems but above all ventilated to counteract rising humidity and radioactive gases.
What is Radon gas?
Radon is a radioactive gas found naturally in the environment. It is produced by the decay of uranium found in soil, rock or water. Radon is invisible, odourless and tasteless and emits ionizing radiation. As a gas, radon can move freely through the soil enabling it to escape to the atmosphere or seep into buildings. When radon escapes from the bedrock into the outdoor air, it is diluted to such low concentrations that it poses a negligible threat to health. However, if a building is built over bedrock or soil that contains uranium, radon gas can be released into the building through cracks in foundation walls and floors, or gaps around pipes and cables. When radon is confined to enclosed or poorly ventilated spaces, it can accumulate to high levels. Radon levels are generally highest in basements and crawl spaces because these areas are nearest to the source and are usually poorly ventilated. In the open air, the amount of radon gas is very small and does not pose a health risk.
Why is it a problem?
The problem occurs when radon gas enters your home and gets trapped. Long-term exposure to high levels of radon can cause lung cancer.
How does it enter a home?
The gas moves from the soil into a home. Although it can seep directly through pores in concrete, the worst entry points are gaps in walls and floors. Any house, of any age, in any state can have elevated radon levels. It really depends on the way your specific house interacts with the surrounding soil. Your neighbor’s radon level may differ significantly from yours.
- Reduction of manpower requirements by up to 80% in comparison to traditional systems.
- Drastic reduction in the use of concrete and aggregates as the arch form permits maximum resistance with a minimum thickness.
- Possibility to implement, in a single solution, foundation beams and the slab with the help of the L-Plast accessory.
- Adaptable to non-standard spaces as the modules can be cut without underpinning.
- Ease of positioning due to lightness and simple linking of the modules.
- Simple adaptation to various perimeters.
- Quick and immediate cutting and shaping of the modules.
- Passage of the underground systems in every direction.
- Creation of a barrier against humidity.
- Tightness against rising humidity.
- Effective ventilation in all directions.
- Disposal of any RADON gas.
- No point of contact between the concrete and the ground.
- Perfect transpiration of the perimeter wall.
- Ventilated under-floor cavities for civil and industrial buildings that are being built new or reconstructed.
- Urban infrastructure structures: squares, sidewalks, sports facilities.
- Creation of an intermediate slab or roofing for cavities used for ventilation and the passage of systems.
- Rooms used for humidity and temperature control: drying cells, cold rooms, greenhouses, storage rooms and cellars.
- Underground pipes for the passage of utilities. Inspectional cavities and pits.
- By filling it in simply with expanded clay, it can be used to create roof- top gardens.
- Underground ducts for the dispersion of water and for drainage.
- Overhead sidewalks for passenger loading and unloading or the creation of floating floors.
- Levelling height.
- Dry Assembly Method:
1. Position the first element to the upper left with respect to the work surface, making sure that the arrow is pointing up.
2. Unite the elements in sequence, by horizontal row, proceeding from the left towards the right and from the top downwards (following the direction normally used for writing), as shown graphically on the crown of each unit.
3. To unite the units in sequence, be careful to perfectly link the “male-female” hooking elements at the base of the support feet (see photo sequence.
- Method for creating under-floor cavities
1. Preparation of the natural ground.
2. Preparation of the lean concrete foundation, to be sized according to the loads and capacity of the ground.
3. Positioning the L-Plast panel around the foundation beams after positioning the necessary reinforcements.
4. Positioning the linking male/female formworks, working from the left to the right, from the top down, making sure the arrow is facing upward.
5. Laying the welded mesh Ø 6 20×20 above the formworks.
6. Casting the concrete starting from the centre of the arc, letting it go inside the legs of the Iglu’®.