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.
Official Building Codes. Residential building codes, such as the Universal Building Code, require handrails to be between 34 and 38 inches high. Handrail height for commercial buildings, as required by the Occupational Safety and Health Administration, must fall between 30 and 37 inches.