How To Measure Triangle Roof

This figure shows a triangle with a base of 5 cm and a height of 2 cm.

How to measure triangle roof.

Measure out 12 along the level bottom edge the green line in our sketch. In this case you would simply measure the base footprint of your home length x width. So if you divide your answer of a product of length times height by two you will get the area of a triangle. Hold the carpenter s level in a horizontal position with one end touching the roof surface.

How steep it is in order to apply a slope multiplier. Finding the perimeter and area of a triangle. Locate the level s 12 inch mark. This is because the roof section of a building can be likened to a triangle with a base width a height in.

This procedure to measure roof slope can be performed on the roof or from a ladder at roof edge. To find the area of a triangle you need to know the length of one side the base b for short and the height h. Then multiply the length of the longest side by the length of this central line. The length l times the height h of a triangle is twice its area a2.

Click to enlarge the image. L 30 feet h 12 feet 30 12 2 180 square feet. 1 roof square 100 square feet. Use a level against the underside of the rafter you re measuring to get the most accurate value.

Note that the height forms a right angle with the base. The calculations for figuring roof angles are based on the width and height of the roof. The most precise way to find the roof s slope is by measuring it from the underside. Mathematicians have no special formula for finding the perimeter of a triangle they just add up the lengths of the sides.

First use a ruler to draw a line from the center of the longest side of the triangle the eave to the point the roof s peak. You would then consider the pitch of your roof i e.