Sometimes when your calcium/magnesium ratio is off, you can get twitching. I get one in my diaphram that feels like a fish flopping in my chest. If you are low in calcium intake, or very low in magnesium, the muscles do a dance of sorts. So you could try to balance that out.
(February 2017) A concrete slab is a common structural element of modern buildings. Horizontal slabs of steel reinforced concrete, typically between 4 and 20 inches (100 and 500 millimeters) thick, are most often used to construct floors and ceilings, while thinner slabs are also used for exterior paving.
The FLAT slab system of construction is one in which the. beam is used in the conventional methods of construction. done away with the directly rests on column and the load. from the slabs is directly transferred to the columns and then. to the foundation. Drops or columns are generally provided. with column heads or capitals.