A foreign object or food item can be aspirated (sucked into) the airway and can cause obstruction and noisy breathing. Floppy tissues in the respiratory tract can cause noisy breathing due to the collapse of these tissues into the airway.
Sand is a loose, fragmented, naturally-occurring material consisting of very small particles of decomposed rocks, corals, or shells. Sand is used to provide bulk, strength, and other properties to construction materials like asphalt and concrete. It is also used as a decorative material in landscaping. Specific types of sand are used in the manufacture of glass and as a molding material for metal casting. Other sand is used as an abrasive in sandblasting and to make sandpaper. Sand was used as early as 6000 B.C. to grind and polish stones to make sharpened tools and other objects.
Void form is an important component used in the construction of structural concrete foundations where expansive soils are present.his moisture causes the void form to lose its structural integrity, thus allowing the soil to expand into the newly created void space without causing damage to the foundation. Concrete foundations including piers and void forms are a must when buildings are constructed where expansive soils are present.