Pulmonary edema occurs when the alveoli fill up with excess fluid seeped out of the blood vessels in the lung instead of air. This can cause problems with the exchange of gas (oxygen and carbon dioxide), resulting in breathing difficulty and poor oxygenation of blood.
Currently buildings are limited to a height of 200 meters and are subject to not contrasting the view of Mount Royal, the city's central green space, with the only exception being antennas and communication towers, that are allowed to reach 223 metres (732 ft) above mean sea level.
Some cities have height limits on two-story houses. Some houses have minimal or no attic space and some have several feet of attic space. So the average height of a house encompasses too many variables to answer with precision. The best one can do is offer a range-say, 18 to 25 feet.