How To Get Dimensions For A Roof

You will need to express this size in terms of square feet.

How to get dimensions for a roof. For instance if the roof is 1550 square feet then it is 16 squares. Depending whether the roof area is measured horizontally possibly from a drawing or photograph a correction factor is necessary to determine the actual area of the roof. The first step in a free roofing estimate is measuring the roof dimensions. The roof area ra is calculated easily.

We multiply the roof length c which is the sum of building length plus the gable end overhangs of the roof by the roof width of slope a that we just figured out above when we computed the hypotenuse of the roof triangle that s why we needed the roof rise number. Just multiply the length and width dimensions. Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure. Make a note of the square footage of each square or rectangular section on your diagram.

Things you will need steel tape measure. This is simply 100 square feet of roof. Multiply the number of roofing squares for a medium pitch roof by 1 12 to 1 25 or by 1 3 to 1 42 for a high pitch roof to get the square roof area. A square simply refers to a 10 x 10 square of roofing.

This reveals that the minimum size for the leader pipe is 5. To size the vertical roof drain for the same parameters 5 000 square feet of room area and 6 per hour of rain consult table 1106 2 figure 3. Be sure to find the area of any dormers on your roof as well.