- - level;
- - Roulette;
- - transmitter;
- - level;
- - rake.
Primarily actually or mentally build a right-angled triangle in which one of the parties will be lowered to the ground perpendicular.To construct a triangle on a piece of land or a road, use leveled.Determine the height of the two points of the measured object above sea level and the distance between them.
If you want to find the slope small facility, located on the ground, take a flat board, or both, using the transmitter, place it horizontally between two points.At the lowest point under it will have to enclose the means at hand, such as bricks.A tape measure to measure the length and height of the board of bricks.
To find slope of the roof, go to the a
ttic and from a certain point downward slope lower thread with the load to the floor.Measure the length of the thread and the distance from the load lowered to the intersection of the ramp with the floor of the attic.Methods of measurements can be very different, until the object of photographing and measuring the sides of the photograph - your goal is to find out at the same time the length of the two legs in the resulting right-angled triangle.
If you have a very detailed map of the physical map of the area, count bias with it.To do this, select the endpoints and see what there refer to the height marked, get the difference between them.Measure the distance between the points and with the help of this scale count the real distance.Note that the total distance to be measured in the same units, for example, only in meters or centimeters only.
Divide the opposing side (vertical distance) in the adjacent (distance between points).If you need to get bias percentage, multiply that number by 100%.To get deviation in ppm, multiply by dividing the 1000 ‰.
If you need to get slope in degrees, use the fact that obtained by dividing the result of the other two sides - the slope.Calculate the arc tangent using his scientific calculator (mechanical or online).As a result, you get the value of the slope and degrees.
Tip 2: How to calculate roof pitch
calculation of slope of the roof - an important stage in the construction work.From the slope of the roof depends not only on the structural features of the roof, but also used for its construction roofing material.
When calculating the angle of the roof consider the climatic conditions of the region in which the construction.The warmer and drier in the street, the more gently sloping roof may be being built.The steeper the angle, the less will accumulate on the roof of snow, and therefore, the snow load is minimized.However, with increasing inclination of the roof increasing wind pressure on the roof, so erect such a structure in areas with strong winds constant is not recommended.The angle of the roof can range from 10 to 60 degrees.
Note that an increase in the angle of the roof increases the cost of the roof .For example, in the construction of roof with a slope of 60 degrees it cost twice the price of a flat roof , if the angle of the roof 450, the cost of such a roof and a half times more than the cost of the flat roof.
Calculate the angle of slope of the roof as the ratio between the height of the roof ridge and laying half.
Remember bias in the valley should not be less than 1%.If the slope of the roof less than 10%, and the roof is made of rolled bitumen-polymer or bituminous materials, to protect the upper layer is required to lay a protective layer of gravel or rock dust.Thus, the thickness of the protective layer of gravel must be 10-15 mm and the stone powder - from 3 to 5 mm.If the roof is built of corrugated asbestos sheets or metal or metal sheeting, it must necessarily be carried out sealing joints between decks.
When calculating the angle of the roof consider the fact that you received from the calculated value, among other things, will depend on the way drainage of melt and rain water.Drainage can be disorganized (external) and organized (internal and external).
Check back all measurements and calculations, because they determine the amount of material required and the quality of installation.
recommended to make the angle of 20-45 degrees gable roof, pent - 20-30 degrees.This overlap of roofing material on the walls of the building should be between 0.3 and 0.45 meters.
- How to calculate roof pitch
- how to determine the bias