What are the regulations on the insulation and fire protection of the exterior walls of high rise bu

Regarding the provisions on external wall insulation and fire protection, the external wall insulation must be made of Class A fireproof materials (in the past, it was stipulated that Class A materials should be used as fireproof isolation belts). What you're talking about is the construction step, and it has little to do with fire prevention. The construction method you mentioned is to make a thin plastering and insulation system, as well as curtain wall type and built-in mold type.

With the development of science and technology, there have been more environmentally friendly, time-saving and labor-saving exterior wall insulation materials on the market. In recent years, the "exterior wall insulation composite panel" has been favored by the public construction party and developers, mainly because it saves a lot of manpower and greatly accelerates the progress of the project. This kind of insulation composite panel is done in the factory according to the steps you mentioned, and when it is dry, it is installed directly on the wall.

Maybe it's not detailed enough, feel free to ask me and I'll be with you**.

High-rise buildings are divided into civil and public buildings

1) Civil Buildings:

1. For buildings with a height greater than or equal to 100m, the combustion performance of the insulation material shall be Class A.

2. For buildings with a height greater than or equal to 60m and less than 100m, the combustion performance of the insulation material shall not be lower than B2 grade. When B2 grade insulation material is used, horizontal fire isolation belt should be set up on each layer.

3. For buildings with a height greater than or equal to 24m and less than 60m, the combustion performance of the insulation material shall not be lower than B2 grade. When B2 grade insulation material is used, horizontal fire isolation belts should be set up every two layers.

4. For buildings with a height of less than 24m, the combustion performance of the insulation material should not be lower than B2 level. Among them, when B2 grade insulation material is used, horizontal fire isolation belts should be set up for every three layers.

2) Other civil buildings (mainly public buildings) shall comply with the following provisions:

1. For buildings with a height greater than or equal to 50m, the combustion performance of the insulation material shall be Class A.

2. For buildings with a height greater than or equal to 24m and less than 50m, the combustion performance of the insulation material shall be grade A or B1. Among them, when B1 grade insulation material is used, horizontal fire isolation belts should be set up every two layers.

3. For buildings with a height of less than 24m, the combustion performance of its insulation material should not be lower than B2 level. Among them, when B2 grade insulation material is used, each layer should be provided with a horizontal fire isolation belt.

Note: Code for Fire Protection Design of High-rise Buildings

The selection of exterior wall insulation materials is first based on which climate zone is the area where the building is located, and different climate zones have stipulated different insulation requirements in different countries, and the design institute designs and adopts different insulation materials according to this requirement to meet the national insulation and energy-saving regulations. The developer cannot change the drawings designed by the design institute without authorization.

What you describe cannot be clearly determined. You can consult the professionals of your local design institute or the Building and Construction Bureau for answers.

Exterior wall insulation of high-rise buildings must use Class A materials (non-combustible materials).

Yes, now the façade is only allowed to reach Grade A.

rock wool, foam glass, etc.

Choose Class A and Class A1 fire protection to ensure that the construction meets the standards. To buy insulated building materials, you can go to the China Insulated Building Materials Portal.

Prevent cyber scams from buying cheaper products.

Insulation Grade A.

It is estimated that the insulation system can reach the A level only Nanyang Yintong YT insulation material.

Raw material Grade A solves the problem of flammability at the root,。。

High-rise residential exterior wall insulation materials include organic insulation materials and inorganic insulation materials, the details are as follows:

Exterior wall insulation is a wall insulation method that most high-rise buildings will take. Adopt a certain fixing method (bonding, mechanical anchoring, pasting + mechanical anchoring, spraying, pouring, etc.) to fix the thermal insulation material with low thermal conductivity and good thermal insulation effect with the building wall to increase the average thermal resistance value of the wall, so as to achieve the effect of thermal insulation or heat insulation. Insulation materials can be divided into organic materials and inorganic materials in terms of internal composition.

1. Organic insulation materials.

Organic insulation materials mainly refer to polymer insulation materials, such as expanded polystyrene board (EPS), extruded polystyrene board (XPS), sprayed polyurethane (SPU), and polystyrene particles. Organic thermal insulation materials have the characteristics of light weight, good processability, high compactness and good thermal insulation effect. The disadvantages are that it is not resistant to aging, the deformation coefficient is large, the stability is poor, the safety is poor, it is flammable, the ecological and environmental protection is very poor, the construction is difficult, the project cost is high, its resources are limited, and it is difficult to recycle.

1. Expanded polystyrene board (EPS).

Expanded polystyrene board, scientific name is polystyrene foam board, also known as EPS board, styrene board, is the abbreviation of expandable polystyrene board. It is made of raw materials that have been pre-haired, matured, shaped, dried and cut. It is made of foam board in the middle and has barbed wire grids on both sides.

It is generally used for partition walls and thermal insulation. Most of them are used for furniture, electrical packaging, cushion blocks, in order to prevent damage to the finished product during the handling process of the building inside and outside the role of insulation.

The insulation system of ESP board is composed of special polymer cement, EPS board, alkali-resistant glass fiber mesh cloth scale and finishing material. It is a new type of building structure system integrating thermal insulation, waterproofing, fire prevention and decoration functions. This technology places the insulation material on the outside of the external wall of the building, does not occupy the indoor space, and the thermal insulation effect is obvious, which is convenient for the design of the building shape.

2. Extruded polystyrene board (XPS).

Extruded plastic board is a rigid foam plastic board with polystyrene resin supplemented by polymer in heating and mixing, injected with catalyst, and then extruded continuous closed-cell foaming, which is an independent closed bubble structure inside, which is an environmentally friendly insulation material with excellent properties such as high compressive resistance, low water absorption, moisture-proof, non-breathable, light weight, corrosion resistance, super anti-aging (almost no aging in long-term use), and low thermal conductivity.

The use of insulation materials and exterior wall insulation technology in buildings can effectively reduce energy loss, promote low-carbon development, and move towards the sustainable development of the construction industry.

High-rise exterior wall insulation can be divided into class A and class B insulation materials according to the grade, and buildings higher than 27 meters must be used for class A insulation materials or fire isolation belts for buildings higher than 27 meters issued by the new national standard.

Class A insulation materials include: pearlescent sand insulation board, foamed ceramic insulation board, inorganic light aggregate insulation board, thermosetting insulation board, etc.;

Class B insulation materials include: phenolic board, extruded board, polyurethane board, etc.; (Note: The composite exterior wall insulation and decoration integrated board decorative layer can be compounded with any insulation material, and the sintered integrated insulation layer and the finishing layer are fixed).

In 2007, the state promulgated GB50411-2007 "Code for Acceptance of Construction Quality of Building Energy-saving Projects", which clearly stipulates the construction quality of building energy-saving construction.

At present, the local engineering quality supervision department must be present for acceptance of energy-saving acceptance, and the on-site inspection report of the heat transfer coefficient of the enclosure structure must be issued.

The local supervision department is the local Ministry of Housing and Urban-Rural Development, also known as the Construction Committee, and the energy conservation office set up to supervise the completion.

In the case of residential projects, the design value of the energy saving coefficient of the project must also be publicized at the designated location.

Due to the occurrence of a number of building insulation fire incidents in recent years, it has triggered the thinking of insulation and fire prevention from all walks of life, and the fire performance of insulation materials has attracted unprecedented attention from all walks of life in the industry. However, many insulation materials are produced during the construction process, such as: electric welding, open flame, and poor construction habits.

The melt droplets and toxic fumes continuously produced during the combustion process of these materials, and the harm to the environment caused by the chlorofluorocarbons, hydrofluorocarbons, freons and other gases released at the same time cannot be ignored. To this end, on September 25, 2009, the Ministry of Housing and Urban-Rural Development and the Ministry of Public Security jointly issued the Interim Provisions on Fire Prevention of External Thermal Insulation Systems and Exterior Wall Decoration of Civil Buildings (Gongtong Zi [2009] No. 46). The thermal insulation design has better fire performance and excellent thermal insulation performance in the several ranges, and the system can win the recognition of the Mingpai market.