Construction requirements

The system consists of purlin, wall frame, polyurethane sandwich panel and accessories

Construction points and precautions

1. 1. Before construction, special construction organization design scheme shall be prepared and submitted to the technical department of the general contractor for approval; polyurethane rigid foam wall and roof insulation construction shall be included in the overall construction organization design of building engineering construction.The special construction organization design scheme generally includes the following contents:

    (1) Project overview, engineering thermal insulation technology quality objectives;

    (2) Polyurethane rigid foam wall, roof insulation engineering plane design drawings, node structure details;

    (3) Main material plan;

    (4) Construction schedule and employment plan;

    (5) Quality assurance measures of polyurethane rigid foam wall and roof insulation technology;

    (6) Safety and civilized construction measures;

    (7) Acceptance procedures of polyurethane rigid foam wall and roof insulation engineering.

   (8) The parts not mentioned shall comply with the relevant specifications and the requirements of the relevant local codes and bidding documents.

1. 2. Before the construction of the project, the construction drawing shall be jointly reviewed, and the written technical disclosure shall be made to the construction personnel on site; the construction personnel shall be assessed before work to ensure that they are on duty with certificates.

1. 3. Before construction, the door and window openings shall be inspected, and the size and position of the openings shall meet the design requirements and quality requirements. The fire ladders, downpipes, embedded parts of various household pipelines and air conditioners extending out of the wall shall be installed, and the gap shall be reserved according to the thickness of the enclosure and insulation system; the support members shall be inspected at the site, and the receiving records shall be made.

1. 4. After entering the construction site, the raw materials of tens of millions of polyurethane rigid foam wall and roof insulation system should be inspected and accepted under the supervision of the supervision engineer, and the samples should be sampled and rechecked according to the regulations; all kinds of raw materials should be stored by classification, rain proof, sun proof and fireproof, and should not be stored in the open air.All kinds of working machines and tools are complete, and they are qualified, safe and reliable after inspection; all kinds of measuring tools are verified to be correct.

15. Construction is not allowed in windy weather or rainy or snowy days.

1. 6. The finished product protection and anti-corrosion treatment shall be done well for the main construction materials (metal surface hard polyurethane sandwich panel, purlin wall frame, etc.) during transportation, stacking and installation.

(refer to relevant standards for purlin, wall frame processing and anti-corrosion requirements)

1. 7. For the project that only prefabricated polyurethane rigid foam metal surface sandwich panel is used on the wall surface, safety protection shall be considered and guardrail shall be added.

1. 8. The thickness of the rigid polyurethane foam sandwich panel with metal surface shall be determined by calculation or test according to the drawing design and heat preservation requirements. The length of the Board shall not be greater than 16.0 m, and the width shall be 1.0 M.

1. 9. The purlin wall frame, the embedded parts of purlin wall frame, screws and sandwich board support parts shall be treated with anti-corrosion treatment, and the hot zinc material shall be preferred, and the screw shall be made of coarse screw.

1. 10. When the vertical plate is used for the wall sandwich panel, the installation sequence and direction shall be determined according to the dominant wind direction of the project site. The vertical lap of the plate shall be made into a groove, and the lap length shall meet the design requirements and relevant regulations.

111. When the sandwich panel is used as the roof, the installation sequence shall be determined according to the dominant wind direction of the project site. When the plate (not supporting the non bite type plate type) is overlapped along the length direction, a wave crest shall be buckled, the bite type support plate type shall be pre glued, and there shall be two waterproof adhesive strips when lapping along the span direction, and the lap length shall meet the design requirements and relevant regulations.

112. Ten million companies have invested more than 20 million yuan to introduce the world’s advanced continuous production line of polyurethane energy-saving board and foam system imported from Italy. With the six component online automatic operation mixing pouring technology, the mixing process of social batching center or factory can be completed online at one time, and the online automatic adjustment can be made according to the temperature, so as to produce the distinctive high-strength and energy-saving typeEnvironmental friendly polyurethane insulation composite board.(its service life is 5-10 years higher than other brands in the same industry)

2.1  technological process

Construction preparation

     Installation of wall frame column beam

     Inspection and acceptance of steel structure installation

     Metal surface hard polyurethane sandwich panel entering the site

     Install the water baffle at the bottom of the plate

     Plate bracket installation

     Installation of metal faced hard polyurethane sandwich panel

     Installation of edge plate

     Matching installation of aluminum alloy window

2. 1.1 organize relevant technical and construction personnel to study and be familiar with drawings, relevant construction specifications and standards, and quality acceptance standards, so as to determine process flow, building specifications and corresponding quality, safety and technical measures.

2. 1.2 according to the relevant technical parameters of the confirmed plate type, the layout drawing of the hard polyurethane sandwich plate with metal surface shall be drawn, the processing length and quantity of the plate shall be determined according to the confirmed layout drawing, and the material number and purchase list shall be given.

2. 1.3 according to the relevant requirements and contents of design documents, construction organization design and layout drawing of metal faced rigid polyurethane sandwich panel, the construction operation instruction and relevant safety and technical disclosure documents of wall composite panel shall be prepared, and they shall be distributed to relevant sections and individuals according to the scope of responsibility and construction contents for strict technical disclosure.

2Before the construction of metal faced rigid polyurethane sandwich panel, the inspection batch acceptance of relevant steel structure installation, welding, high-strength bolts, paint, etc. shall be conducted in time.

21.5 on the basis of the design drawing, the layout drawing of the hard polyurethane sandwich panel with metal surface has been designed.

21.6 the safety measures required by the construction organization design have been implemented in place.

2. 1.7 according to the axis and room, the hard polyurethane sandwich plates with metal surface have been stacked in accordance with the installation sequence.

2. 1.8 check the perpendicularity and flatness of construction working surface and submit acceptance records.

2.2  Key points of construction operation

2. 2.1 before installing the Pu board on the wall, check whether the perpendicularity and levelness of the wall purlin installation meet the requirements, and the verticality of the wall frame column meets the requirements.

2. 2.2 before installing the wall panel, the water retaining plate at the bottom of the plate and the water retaining plate at the bottom of the window shall be installed first. The connection between the water retaining plate and the bottom of the window shall be welded. After welding, the anti-corrosion coating shall be applied. The connection between the water baffle and the wall frame column beam shall be fixed with coarse thread self tapping screws.

22.3 the connection between the metal surface rigid polyurethane sandwich panel and the wall frame column beam shall be fixed with coarse thread self tapping screw

2. 2.4 for each two wall panels installed, the elevation shall be measured to see if it meets the requirements, and the levelness of the same wall panel shall be ensured.

2. 2.5 the wall closing boards shall be laid against the dominant wind direction. The overlapping parts between the flashing boards, the corner plates and the profiled steel plates must be provided with waterproof sealing materials according to the requirements. The gable flashing boards must be installed before the ridge plates are overlapped.

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2.3  Safety assurance measures

2. 3.1 before the construction of hard polyurethane sandwich board with metal surface, the safety technical disclosure shall be made according to the requirements of sound safety production management, and the safety production responsibility system shall be implemented layer by layer.

23.2 conduct safety inspection regularly and irregularly, carry out safety education activities regularly, and use all staff to improve self-protection ability.

2. 3.3 the on-site power consumption must be in strict accordance with the provisions of GB 50194-93, JGJ46-88, etc., and the power connection port for construction shall be provided with rain proof and leakage proof protective measures to prevent construction personnel from getting electric shock at high altitude.

2. 3.4 safety helmet must be worn when entering the construction site, and safety belt and anti-skid shoes must be worn when working at height.

2. 3.5 do a good job in the safety protection of high-altitude construction. Workers must hang the safety belt on the safety rope during construction to prevent falling from high altitude. The personnel suffering from diseases not suitable for high-altitude operation shall not be arranged for high-altitude operation.

23.6 it shall comply with the relevant provisions of the national construction specifications and the relevant provisions of the project location.