The concentration of creatinine is a better indicator of renal. function than urea or uric acid because it is not affected by diet, exercise, or hormones. The creatinine level has been used in combination with BUN to differentiate between. prerenal and renal causes of an elevated urea/BUN.
Roof surfaces are measured in squares.. A square is an area of roof which measures 100 square feet. To determine the number of squares on the gable roof above, simply divide its total of 24,000 square feet by 100. The result is 240, and this means you would need 240 squares of shingles to cover that roof.
How Roof Pitch is Calculated. To accurately calculate the area of your roof, you must first determine its slope, or pitch. A roof's pitch is determined by how much it rises vertically for every foot it runs horizontally. Thus, a moderate â6 in 12â roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. A â12 in 12â pitch is a steep, 45-degree angle roof.