But this has been exacerbated by human activities which have led to: 1) an increase in greenhouse gas emissions that causes heat to remain trapped within the troposphere, and 2) a decrease in ozone in the stratosphere, causing less sunlight to be absorbed by the ozone layer, resulting in a cooling of the stratosphere.
When measuring for floor tile the rule is: Length x Width + Waste = Amount Needed. Waste Factor will vary based upon tile size, layout, configuration of room, patterns, etc. Typical waste factor is about 10%. Add 15% for tile being installed diagonally or for a room with lots of jogs and corners.
Multiply the width x length to obtain the house area in sq ft. if your house isnât square or rectangle, compute each piece then total the sums. Example: a 50 x 30 ft (length x width) = 1500 sq ft. To get the roof size, convert the sq ft area to roofing squares. Assuming the area is 1500 sq ft, it should be divided by 100 (100 is always the number to use). The answer is 15 squares.