JG/T 570-2019Pre-fabricated aluminum alloy low-rise housing and mobile housing (English PDF)

4.1 Classification

4.1.1 Classified by whether it can be moved

Prefabricated aluminum alloy houses can be divided into aluminum alloy low-rise houses (code-named LH) and aluminum alloy mobile houses (code-named MH).

4.1.2 Classification by purpose

The classification and code by purpose should comply with the requirements of Table 1.

Table 1 Use classification and code

4.1.3 Classification by applicable climate regions

According to the applicable climate zone classification and code, it should meet the requirements of Table 2.

4.2 Marking

4.2.1 Marking method

The marking should be composed of house category, purpose, applicable climate zone, number of floors, area and total height.

4.2.2 Marking example

Example. If it is suitable for a two-story prefabricated aluminum alloy low-rise residential house with an area of 150m2 and a total height of 7.7m in a cold area,

5.1 Design requirements

5.1.1 Aluminum alloy low-rise houses and mobile houses shall determine the floor and roof live load according to the use purpose according to GB 50009;

According to the applicable area, determine the wind load and snow load according to GB 50009, and determine the seismic fortification standard and earthquake action according to GB 50011.

5.1.2 The bearing capacity and deformation limits of aluminum alloy structural members and their connections shall meet the requirements of GB 50429.

Parts and connections should meet the requirements of GB 50017.

5.1.3 The design service life of the main structure of aluminum alloy low-rise houses and mobile houses is 50 years.

5.1.4 The design of civil buildings should meet the requirements of GB 50352.

5.1.5 The design of water supply and drainage should meet the requirements of GB 50015.

5.1.6 The energy efficiency of residential buildings shall meet the corresponding requirements of JG J 75, JG J 134, and JG J 26 according to the district.

The calculation should meet the requirements of GB 50189.

5.1.7 The lightning protection design should meet the following requirements.

5.1.7.1 The anti-contact voltage shall meet one of the following requirements.

5.1.7.3 Other requirements shall meet the requirements of GB 50057.

5.2 Material

5.2.2 The properties of aluminum alloy profiles should meet the requirements of GB/T 5237.1~GB/T 5237.5 and GB/T 6892;

The performance of the plate should meet the requirements of GB/T 3880.2 and GB/T 3880.3; the surface treatment should meet the requirements of GB/T 5237.

5.2.3 The performance of steel should meet the requirements of GB/T 700 and GB/T 699.

5.2.4 The requirements for connecting parts should meet the requirements of Table 4.

5.2.5 The thermal performance of thermal insulation filling materials should meet the requirements of GB 50176, and the fire performance should meet the requirements of GB 50016.

Regulations.

5.2.6 The electric wire should meet the requirements of GB 5023.1, the electric wire tube should meet the regulations of JG 3050, and the water supply tube should meet the requirements of CJJ/T 98, the drain pipe should meet the requirements of GB/T 5836.2, and the sealing tape should meet the requirements of HB/T 3099.

5.2.7 The dimensional deviation of aluminum alloy extruded profiles shall comply with the high-precision requirements of GB/T 14846.

5.2.8 The glass performance should meet the requirements of GB/T 8478.

5.2.9 The performance of the sealant should meet the requirements of GB/T 14683 and GB/T 22083.

6.2 Wind resistance and interlayer displacement limit

6.2.1 The wind pressure resistance performance index of external walls and roofs should be determined according to the standard value Wk of wind load, and the index value is not it should be lower than Wk and not less than 1.0kPa. The calculation of Wk should comply with the provisions of GB 50009.

6.2.2 Under the action of the wind standard value, the relative deflection of the supporting system and the panel of the enclosure structure should meet the requirements of Table 6.

6.2.3 The grading index P3 of wind resistance performance shall meet the requirements of 6.5.1, and shall meet the requirements of Table 7.

6.2.4 Under the standard value of wind load or the standard value of frequent earthquakes, the maximum elastic interlayer displacement angle should not exceed 1/300.

6.3 Air tightness

6.3.1 The airtight performance classification of outer doors and windows should meet the requirements of Table 8.After passing the airtightness test, if the same door and window test piece passes when the calculated air permeability per unit opening length q1 and unit opening area q2 correspond to different classifications, the lower classification shall prevail.

6.3.2 The air-tight performance classification of external walls should meet the requirements of Table 9.

6.3.3 The airtight performance classification of exterior doors and windows of residential buildings in severe cold areas shall not be lower than the level 6 specified in Table 8.

It is lower than Grade 4 specified in Table 8; the airtight performance classification of external windows of public buildings shall not be lower than Grade 6 specified in Table 8, severe cold and cold the airtightness of the outer door of the area shall not be lower than the level 4 specified in Table 8.

6.3.4 The airtightness classification of exterior walls of residential buildings shall not be lower than the level 2 specified in Table 9; the airtightness of exterior walls of public buildings the energy classification should not be lower than the 3 levels specified in Table 9.

6.4 Water tightness

6.4.1 The watertight performance test should be carried out before the wind pressure test and the deformation test.

6.4.2 The watertight performance of external doors and windows shall use the pressure difference of the previous stage where the pressure difference of serious leakage occurs as the grading index.

The specific classification should meet the requirements of Table 10.

6.4.3 The watertight performance of the external wall shall adopt the maximum pressure difference without serious leakage as the grading index.

The classification should meet the requirements of Table 11.

6.4.4 The watertight performance of exterior doors and windows of buildings shall not be lower than Grade 2 specified in Table 10.

6.4.5 The watertight performance of the exterior wall of the building shall not be lower than the level 2 specified in Table 11.

6.5 Anti-condensation performance

During the entire process of the anti-condensation test, it is required that there should be no condensation and no dysfunction or damage on the surface of the sample chamber.

6.6 Sound insulation requirements

According to the building purpose, the sound insulation performance of the exterior walls, exterior doors and windows, interior partition walls, and floor slabs of various rooms should meet GB 50352 Requirements.

6.7 Impact resistance

The impact resistance of building exterior wall panels shall not be lower than those specified in Table 12.

6.8 Combustion performance and fire resistance limit

The fire resistance rating should meet the requirements of GB 50016.The combustion performance and fire resistance of residential building components with fire resistance rating 4 the limits should meet the requirements of Table 13; the combustion performance and fire resistance limits of public building components should meet the requirements of Table 14.

6.9 Lightning protection requirements

6.9.1 When using a metal roof as an air-termination device, the thickness of the metal roof shall not be less than 0.8mm.

6.9.2 When working grounding, protective grounding and lightning protection grounding share the grounding device, the grounding resistance should not be greater than 4ohm;

When there is a joint grounding device with weak current grounding requirements, the grounding resistance should not be greater than 1ohm.

6.10 Construction requirements

6.10.1 The mobile house should be independently equipped with devices or hanging parts for hoisting, and the method and weight of hoisting should be indicated in the manual and the requirements for foundations and on-site lightning protection practices.

6.10.2 The thickness of the aluminum alloy plate or the wall thickness of the aluminum alloy profile shall not be less than 0.65mm.

7.2 Wind resistance and interlayer displacement limit

The wind pressure resistance test method should meet the requirements of GB/T 15227.When the roof panel and the main structure connection structure and wall when the connection structure of the panel and the main structure is the same and the wind suction force of the roof panel is less than the wind suction force of the wall panel, the roof panel can Don't do the wind resistance test; otherwise, the test in Appendix D of GB 50896-2013 should be followed.

The limit of the displacement between floors can be determined by calculation or the test of the prototype structure of the house, and the test and measurement method should conform to JG J/T 101 Regulations.

7.3 Air tightness

The test method should meet the requirements of GB/T 15227.

7.4 Water tightness

The test method should meet the requirements of GB/T 15227.

7.5 Anti-condensation performance

The periphery of the sample shall be sealed with heat insulating material, and every openable hole shall be closed, and every movable part shall be closed tightly.

Bit.

7.6 Sound insulation

The sound insulation measurement method should meet the requirements of GB/T 19889.3.

7.7 Impact resistance

The test method should comply with the provisions of Appendix F in GB/T 21086-2007.

7.8 Combustion performance and fire resistance rating

The test method should meet the requirements of GB/T 9978.1-2008 ~ GB/T 9978.9-2008.

7.9 Lightning protection performance test method

7.9.1 Use a vernier caliper to measure the actual thickness.

7.9.2 Use a grounding resistance tester to test the grounding resistance of aluminum alloy buildings. The test method should comply with DL/T 475.

7.10 Construction requirements inspection

7.10.1 Check according to the instructions and try hoisting.

7.10.2 Measuring actual thickness with vernier caliper

8.1 Inspection classification

Inspection can be divided into type inspection, component inspection, installation inspection, factory inspection and finished product inspection.

8.2 Type inspection

8.2.1 Type inspection

The type inspection shall meet the following requirements.

a) Trial type appraisal of new products or product transfer to factory production;

b) After formal production, if there are major changes in structure, material, process, which may affect product performance;

c) There is a big difference between the factory inspection result and the last type inspection;

d) When the national quality supervision agency puts forward a requirement for type inspection;

e) 3 years in normal production.

8.2.2 Type inspection

Type inspection items should meet the following requirements.

a) Check the performance test report of structural components, such as. mechanical properties of structural components, thermal insulation performance of wall panels, and Fire performance and anti-condensation performance inspection report;

b) Test report of all items of factory inspection;

c) Displacement between structural layers, in-plane deformation performance of wall panels, house sound insulation performance, wind resistance, impact resistance, and Thunder performance, air tightness, water tightness, waterproof test, water spray test, and house marking requirements.

8.2.3 Amount and sampling for type inspection

The type inspection sample shall be randomly selected from the products that have passed the factory inspection and have the same envelope structure performance, and the number is one.

8.2.4 Inspection standards for type inspection

Inspection by a third party, the test method should meet the requirements of 7.1~7.10, and the inspection standard should meet the requirements of 6.1~6.10.

8.3 Component inspection, installation inspection, factory inspection

8.3.1 The items of component inspection, installation inspection and factory inspection shall be carried out in accordance with the requirements of Appendix B to Appendix D.

8.3.2 Appendices B to D are marked with * as main control items, and others are general items.

8.3.3 The criterion is. all main control items should be qualified, 80% and above check points of general items meet the requirements, and the rest the project shall not have defects that affect the installation, use function or obvious decoration effect, among which there are inspection items with allowable deviation, dissatisfaction the maximum foot point should not exceed 1.2 times the allowable deviation value.

8.4 Finished product inspection

Finished product inspection items and requirements can be implemented in accordance with Appendix E. The finished product inspection of the mobile house can be implemented in the production plant.

Should be implemented on site.

8.5 Eligibility criteria

After passing the factory inspection, installation inspection, finished product inspection, and house identification inspection, it can be determined as a qualified product.

9.1 Identification

After the house is assembled, there should be a logo, and the logo should include the following.

a) Product name;

b) Product layout and area;

c) Product implementation standard number;

d) Factory number and date;

e) The name or trademark of the manufacturer;

f) Address of production enterprise;

g) Bearing load (kN/m2).

9.2 Product manual

All houses should be accompanied by product instructions, which should include the following.

a) Floor and roof live load standard value, wind load standard value, snow load standard value, seismic fortification intensity, fire protection requirements Requirements, applicable area, use function, service life, etc.;

b) Model specifications and combustion performance grades of main materials such as beams, columns, wall panels, floor panels, and roof panels;

c) Requirements and diagrams of foundation bearing capacity and embedded parts bearing capacity, practices, etc.;

d) The main installation process description, disassembly and stacking, transportation, maintenance and storage instructions;

e) Instructions for fire prevention treatment in rooms in contact with fire sources;

f) Layout drawing of water, heating, electricity, solar energy and other equipment;

g) Use warning instructions and precautions to mark load-bearing, energy-saving or fire-resistant components or parts that cannot be removed;

h) Lightning protection and wind resistance measures required by special geographical and climatic conditions;

I) Packaging, transportation and storage instructions.

9.3 Product qualification certificate

In addition to the product mark, production unit and address, the certificate should also include the following.

a) Implement product standard number;

b) Products delivered in batches should also have. batch size and batch number;

c) Product inspection date, inspector's signature or seal.

Appendix A

(Normative appendix) Test method for in-plane deformation performance of wallboard A.1 Test content A.2 Test process A.3 Test requirements Appendix B (Normative appendix) Component or component inspection B.1 The component inspection items are shown in Table B.1.