Mansard roof calculation - how to calculate the area and

Mansard is a residential, heated room, equipped in the under-roof space, which allows you to increase the living space of the house with minimal cost. The design of such a roof is characterized by increased complexity, since it must withstand high weight loads, so it is quite difficult to calculate it yourself. To calculate the roof attic quickly and correctly, you can use the online calculator. In this article we will describe what calculations need to be made to avoid errors in the project.

Features an attic roof

The construction of the roof roof is different from the usual, as they are used differently and have different uses. To equip a residential attic with high enough ceilings, it is necessary to significantly increase the height of the ridge of the roof, change the slope of the slopes, as well as strengthen the truss system. To avoid design errors, it is better to use a special calculator program that automatically performs accurate calculations based on the data entered. The design features of the mansard roof are:

1. Broken form of stingrays. To maximize the useful volume of roofing space, the roof has to do broken or semi-pebble type. This design of slopes allows you to make the ceiling high, without increasing the angle of the roof.
2. Great bias. Mansard roofs, as a rule, have a large slope of slopes, which allows to increase the useful volume of the room due to the height of the ceiling. This feature leads to the fact that significantly increases the weight of the structure.
3. A large area of ​​stingrays. Due to the steepness and great height of the ridge, the mansard roof has a huge area of ​​contact with the atmosphere, which adversely affects the amount of heat loss. To preserve heat in the attic, thermal insulation of roof slopes is required.

Note! The online calculator will not replace an experienced architect in the matter of creating a project of a reliable roof roof, however, it will help to avoid gross blunders in the calculations that lead to the collapse of the structure.

Attic area calculation

First of all, to create a functional project, it is necessary to calculate the area of ​​the attic. This parameter depends on the size of the house, but it is also influenced by the roof structure. The total area of ​​the attic consists of 2 indicators:

• Useful volume. This term is understood to mean the area of ​​the under-roof space, in which the height of the ceilings is above 0.9 m. Obviously, the useful volume does not occupy the entire area of ​​the attic, but only the middle part. To rationally manage the free space, you should free up the space under the ridge of the roof from the elements of the truss system, shifting them to the sides.
• "Deaf" zone. “Deaf” zones in the attic are the angles formed between the ceiling and the lower part of the slope, in which the ceiling height is 0.9 meters and below. These areas are not suitable for people, but they can accommodate niches or lockers for storage. It is better to calculate the slope and shape of the roof so that the "blind areas" occupy a smaller part of the total attic area.

Important! In order for the calculator program to calculate the attic area, it is necessary to enter the slope and height of the ridge of the roof, the size of the house, as well as the shape and number of ramps into free fields. After that, the user will be able to see the exact calculation of the indicator, as well as visualize the result of calculations using the scheme.

Calculation of the main parameters

Reliability, durability and durability of the construction of an attic roof depend on the correctness of the calculation, therefore, if there is no experience in design work of such complexity, it is better to use an online calculator. A special program will help you quickly and accurately calculate the basic parameters of the roof in order to acquire the required amount of building materials and ensure that the foundation is sufficiently strong. The following parameters are included in the calculation of the mansard roof:

1. The height of the skate. This indicator determines the highest point of the roof in accordance with the desired slope of the slopes and the width of the house. Calculations are performed using trigonometric formulas.
2. The total weight of the roofing pie. To calculate this indicator, the specific weight of 1 square meter of roofing material, waterproofing, insulation and elements of the truss system is added up. For residential buildings, the total weight of 1 square meter of roofing pie should not exceed 50 kg.
3. Square skates. If the shape of the slope is rectangular, its area is calculated by multiplying the length by the width of the element. If the roof has a more complex shape, then it is divided into simple geometric shapes, the area of ​​which is calculated separately, and then folded.

Please note that even an advanced calculator does not insure against errors in the project, however, it will help you quickly estimate the cost of the material and compare different versions of the roof construction.

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