How to calculate the roof area: the important nuances of
At the preparatory stage of calculations, it is necessary to conduct a number of activities:
- It is initially recommended to prepare a roof plan for the building in terms of its slope
- The second step is the measurement by the construction tape measure. It is advised to resort to certain calculation programs that allow obtaining the most accurate data of
- . As a result of measurements, it is necessary to determine the type of roofing
Often use the long-tried formulas for calculating the size of the roof plane. Given the most common triangular shape of skates, one should apply formulas from the science of geometry.
The angle of inclination of the ramp is measured initially. It is the main one in subsequent computational processes. Consider the coefficients of the roof slope:
- The angle of 9 degrees has a coefficient of 1.01
- 14 degrees is 1.03
- At 18 degrees - 1.05
- 23 degrees the slope angle has a coefficient of 1.08
- Angle of 27 degrees - 1.12
- Maximum anglein 34 degrees - 1,2 coefficient
The roof, which has a complex construction - four-stage, hip, triskatnaya and others - is subjected to a stage-by-stage calculation of the area. It is divided into parts, their area is considered separately, after everything is summed up. Often the final result is added plus ten percent( taking into account small errors).
How to calculate the roof area: consider the different roof slopes
Starting to measure the area of the roofing system and determine the required amount of building material, you need to decide what kind of roof the dealer is dealing with. Consider each type of ramp separately.
Single-pit roof calculation
Single-pit roof is considered one of the simplest structures. Its calculation does not require special professional knowledge. A single-skinned version often has a standard coating. The classical form of such a roof is rectangular. Based on the knowledge gained at school, the area of the rectangle is the length and width multiplied by each other. It is enough to know the length and width of the roof.
Calculation of the roof area of two ramps
The gable roof has the shape of a triangle. Calculation of its area is made by a geometric formula. One roof slope is named "C", 50 percent of its width should be divided by cos 30 degrees( cosine 30).The result is 0,866.
Calculating the size of the planes of a gable roof has its own subtleties of computation. Take into account the features of the gable roof, consider them on an approximate example:
- One ramp has a length of 5 meters
- Its ridge element is 8.5 meters
We calculate: 5 * 8.5 * 2 = 85 square meters( multiplied by two in numbertwo rays).We get the value of the roof.
Certain material requires its calculations. Just calculate the area of the roof slopes is not enough. Considering the wide prevalence of roofing with metal roofing, consider its calculations.
One layer of metal tile often has standard parameters:
- Single-wave is sold with parameters of width 1.1 m, length - 0.35 m
- Three-wave - width 1.1 m, length 0.5 m
Knowing the type of chosen metal, you need the length of the ridge elementdivide by the width of the seam. The result is rounded to a higher value. This is the sum of the sheets to cover the gable roof.
To the note: it is initially worthwhile to learn the exact parameters of metal sheets from manufacturers. Calculation of the number of building materials of other types of roofing can vary.
Roof area with complex structures
The roof, which has more than two rays, is called complex in its calculations. Before they start, it is worth familiarizing yourself with important tips:
- Initially, it is advised to divide the entire surface of the roof of the building into separate components. This will simplify the general calculation of the area. Calculate the area of individual squares, rectangles and triangles is much simpler
- The result of calculating the gable roof of all individual components is recommended to multiply by the cosine of the angle.
- The roof slope should be measured from the edge of the cornice to the ridge element
- . The obtained sums of each individual element are added to each other,figure
- Even a simple ramp can have additional add-ons. Add-ins should be measured separately
- When calculating it is worth taking into account the ventilation parts, chimneys, window openings, parapet installations, manholes. Their parameters are taken into account when ordering the roofing
Formula for calculating the roof area
In addition, it is worth mentioning the features of the area calculation. It is necessary to remember about:
- Roof shape;
- Parameters of additional elements;
- Presence of overlap;
- Type of roofing;
- Type of roofing.
When covering the roof with slate, use the area formula: S =( 2xA + B) *( 2xA + C) * cos30.
Components of this formula:
A - width of overhang;
B - length of the building walls;
C - width.
The angle value is taken as 30 degrees.
At roof metal-tile calculate in addition a valley, a skate board, cornice, overhang. Material should be purchased with a margin for overlaps. Its area formula is: S =( B * h) / 2.
Components of the formula:
S - area of the entire surface;
B - length of the base of the triangular roof;
H - height.
It is important to note: The maximum accurate calculation of the area can give incorrect indicators of the amount of required roofing material. It is important to take into account the angle of the roof, the type of construction. It is necessary to take into account all the nuances of the roofing system and calculate the area of the pitched roof as accurately as possible.
