How to calculate the floor area of a sloping roof?

The calculation of its area is determined by the different net heights.

Regarding the calculation of the floor area of the space within the pitched roof, according to the "Residential Design Code".

The relevant provisions of the building with a sloping roof are calculated according to different net heights to determine their area, and the net height is the vertical distance between the floor or the ground to the bottom of the upper floor slab or the bottom surface of the ceiling. The space within the pitched roof of a multi-storey building and under the grandstand of the stadium shall be regarded as the space within the pitched roof, and its area shall be calculated according to its clear height when it is designed to be utilized. The design of unused space should not be calculated as floor area.

In a single-storey building, the space in the sloping roof is used, and its clear height exceeds the part; The sloping roof of the multi-storey building and the stadium grandstand should be designed to make use of the part where the clear height is exceeded; About calculating the full area.

Rules for calculating the floor area of the roof slope roof of multi-storey buildings:

1. When the design is utilized, the full area of the part where the net height exceeds should be calculated;

2. When the net height is in the part of the to, the area of 1 2 should be calculated;

3. When the design is not used or the indoor net height is less than lA 20m site should not be counted as an area.

The inclined planes of the double-slope or multi-slope roofs of the sloping roof intersect each other, and the horizontal intersection line at the top is called the normal ridge; The oblique intersection line that intersects the inclined planes to form a convex angle is called the oblique ridge; The oblique intersection of inclined planes to form a concave angle is called an oblique gutter. A sloping roof without a normal ridge is called a roll roof. Hard mountain tops, hanging mountain tops, and rest mountain tops can all be made into the form of roll roofs.

In addition, the top of the mountain, the top of the temple and the spire can also be arranged in the form of heavy eaves as needed.

When using the space in the sloping roof, the full area should be calculated for the part where the net height is exceeded.

The clear height of the part should accrue 1 2 area.

The area of the area where the net height is insufficient is not calculated.

Code for Calculation of Construction Area of Construction Projects GB T50353-2005 stipulates:

When using the space in the sloping roof, the full area should be calculated for the part where the net height is exceeded.

The clear height of the part should be counted as 1 2 area.

The net height is less than lA 20m site should not be counted as an area.

Roof area = its projected area COSA (a is the roof slope).

According to the People's Republic of China Code for the Calculation of the Floor Area of Construction Projects GB T 50353-2005:

1.Single-storey building - the full area should be calculated for the part where the net height exceeds when the space in the sloping roof is used; The net height of the part in to should be calculated 1 2 area; Areas with insufficient clear height should not be counted.

2.In the sloping roof of a multi-storey building and under the grandstand of the venue, the full area should be calculated for the part where the net height exceeds when the design is utilized; The net height of the part in to should be calculated 1 2 area; The area should not be calculated when the design is not utilized or the indoor clear height is insufficient.

3 0 3 For the sloping roof that forms the building space, the full area should be calculated for the part where the clear height of the structure is above and above; The area of 1 2 should be calculated for the part where the net height of the structure is above and below; The floor area shall not be calculated if the clear height of the structure is below.

Excerpted from the "Code for Calculation of Construction Area of Construction Projects" is a national standard, numbered GB T50353-2013, which has been implemented since July 1, 2014.

The length or width of the room in the same direction of the slope is used as the straight edge, and the highest and lowest points of the floor height are used as the upper and lower edges. Then use dal to pull out the size of the hypotenuse and multiply it by the width or length of the room to get the area of the pitched roof. When using the space in the sloping roof, the full area should be calculated for the part where the net height from the lower surface of the roof to the floor is exceeded; The net height of the part in to should be calculated 1 2 area; Areas with insufficient clear height should not be counted.

Do not take 300 of 2700 + 300 belongs to the part where the net height is insufficient, and the area should not be calculated.

The People's Republic of China Code for the Calculation of the Construction Area of Construction Projects GB T 50353-2005A: Single-storey buildings - when using the internal space of sloping roofs, the part of the net height greater than the total area should be calculated; The clear height of the part of the area to 1 2 should be calculated; Areas with a clear height less than should not be calculated. b：

In the pitched roof of multi-storey buildings and under the stadium stands, when the design is adopted, the part of the clear height greater than should be calculated according to the total area; The part of the clear height is calculated as 1 2 of the area; The area is not calculated when the use or indoor clear height is less. Pay attention to the height.

meters between half of the floor area.

meters above the total floor area is calculated.

So the floor area =

The width is calculated by the slope, this needs to be explained, it is inconvenient to say, if you still don't understand, you can ask me privately.

The area of the sloping roof is generally calculated by multiplying the horizontal projection area of the roof by a (the coefficient of the sloping roof). The a-value is calculated from the slope coefficient.

For example, the slope factor is 1:4, i.e. 4 meters horizontally and 1 meter high. a*a=（1+1*1/4*4）=

If you know the horizontal dimensions and height of a single slope, the calculation is the same.

For example, if the horizontal size is 6 meters and the height is, then a*a=(1 + calculation principle is the Pythagorean theorem.

When the space in the sloping roof is utilized, the part with a height greater than a meter is calculated as the full area, the height is calculated as 1 2 area in meters, and the building surface is not calculated if the height is less than a meter.

Because the net height of your sloping roof is exceeded, then its calculated area is calculated according to the full area (that is, the horizontal projection area), and the net height is only half of the calculated area, and the area is not calculated when it is not enough.

When using the space in the sloping roof, the part with a net height of more than one meter should be calculated as the full area; The clear height of the part in meters to meters should be calculated 1 2 area; Areas with a clear height of less than one meter should not be counted. (Note "Utilization" and "Clear Height").

Half is calculated in the meter, but the height * slope coefficient 2 obtained by subtracting the meter (the meter does not calculate the area) in the calculation, that is, (that is, the bottom width of the slope surface should be calculated in the meter, so half of the area) * 2 (two slopes);

The same is true for roads above meters, and the coefficient 2 = that is, the width of the slope bottom to be calculated, so the entire area above meters is.

Thank you in the end.

The width of the floor area is equal to finding the base length of the two triangles.

The above part of the ( "Slope Ratio 1:2->

A roof plan is also required to work it out.

The calculation of its area is determined by the different net heights. Regarding the calculation of the construction area of the sloping roof space, according to the relevant provisions of the "Residential Design Code", the area of the building with a sloping roof is determined according to different net heights, and the net height is the vertical distance between the floor or the ground to the bottom of the upper floor slab or the bottom surface of the ceiling.

The provisions of the calculation are: the full area should be calculated for the part with the clear height of the structure and above; The area of 1 2 should be calculated for the part where the net height of the structure is above and below; The floor area shall not be calculated if the clear height of the structure is below.

Between meters and a half of the area * 1 2 * 2 = meters above the calculated total floor area of the building? *3 * 2 = so build a calculated area =

The slope of the width is calculated, which needs to be drawn ** to explain inconvenient, if you can't understand I ask in private.

Whether the sloping roof needs to calculate the construction area depends on whether it is used, and if it is used, then the construction area needs to be calculated.

Regarding the reasons for the rise of slope roofing, there are roughly the following theories:

1) "Sloping roofs are good for waterproofing". In fact, a series of structural designs such as waterproofing, heat insulation, heat preservation, and greening of flat roofs are mature. The reason why leakage occurs is that it is not well designed, not well constructed, and not well used, rather than a flat or slope problem.

The construction technology of the so-called sloping roof is mature, mainly referring to the traditional sloping roof.

The "official" traditional slope roof is reliable and waterproof, good insulation, and quite durable, but it is too manual, labor-intensive and time-consuming, and the material is also expensive. The traditional folk slope roofing is very different from the north and the south, and the thickness and durability of the north are not very ideal.

2) "More area can be used for sloping roofs". In the past, residential buildings were subject to area index control, and the top floor residents could reserve a floor height and slope top space to "steal" a floor or half of the floor area.

3) "Slope roof is beautiful". Single-storey and low-rise slope roof buildings, because they can be hidden in the green trees, are beautiful from a distance and up close; The undulating multi-storey sloping roof building is also easy to hide in the trees, which makes people get a beautiful visual experience.

But in reality, most of the residential areas developed in large cities in recent years, whether in the suburbs or on both sides of transportation arteries, are small high-rise buildings – mainly in pursuit of maximizing profits.

The specification stipulates that for the sloping roof that forms the building space, the full area should be calculated for the part where the clear height of the structure is above and above; The area of 1 2 should be calculated for the part where the net height of the structure is above and below; The floor area shall not be calculated if the clear height of the structure is below.

Floor area is a real estate term, which is directly related to the calculation of usable area and utilization rate. Depending on the country and region, the definition and measurement standards may not be consistent. The floor area is generally larger than the usable area.

The construction area is an important technical and economic indicator in the field of construction engineering, and it is also one of the important indicators of national macroeconomic regulation and control. The construction area refers to the horizontal area of the outer structure above the foot of the external wall of the building, and is a physical quantity index that reflects the scale of housing construction in square meters.

The construction area is also known as the construction area, which refers to the plane area of each floor measured above the outer horizontal plane of the external wall of the residential building. It is an economic indicator that indicates the size of a building. The floor area of each floor is calculated according to the horizontal section of the outer wall enclosure above the foot of the building.

It consists of three items, namely the usable area, the auxiliary area, and the structural area. In Chinese mainland, the regulations relating to floor area include the Rules for the Calculation of the Area Sold of Commercial Housing and the Apportionment of Common Area and the current Rules for the Calculation of the Area of Floor Area. In Hong Kong, China, the calculation of gross floor area and usable area is subject to the Code of Practice on Measurement issued by the Hong Kong Institute of Surveyors.

In Taiwan, there are technical building regulations, and Chapter 9 of the building regulations are about the floor area ratio and floor area regulations.

The construction area of the project is inconsistent with the actual area. The usable area is also called the carpet area Net area, which is the area of the carpet after the carpet is spread into the ground and covered [3].

The usable area is actually the area within the suite, and the construction area of the project is based on the area in the suite plus the shared area occupied by each household.

According to the construction area calculation specification, the construction area below the meter is not calculated, and half of the construction area is calculated between meters; meters above the total floor area is calculated.

o( o The area of the roof is not calculated regardless of whether it is sloped or not, but the space under the roof is calculated as the area. o( o According to the "Code for Calculation of Construction Area of Construction Projects": the full area should be calculated for the part where the net height exceeds when using the space in the sloping roof; The net height of the part in to should be calculated 1 2 area; Areas with insufficient clear height should not be counted.