GB/T 51410-2020 English PDFUS$1059.00 · In stock
Delivery: <= 7 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 51410-2020: Technical standard for application of firestop in buildings Status: Valid
Basic dataStandard ID: GB/T 51410-2020 (GB/T51410-2020)Description (Translated English): Technical standard for application of firestop in buildings Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: P16 Classification of International Standard: 91.120 Word Count Estimation: 57,559 Date of Issue: 2020 Date of Implementation: 2020-07-01 Issuing agency(ies): Ministry of Housing and Urban-Rural Development of the People's Republic of China; State Administration for Market Regulation GB/T 51410-2020: Technical standard for application of firestop in buildings---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.1 General 1.0.1 This standard is formulated to prevent flames and smoke from spreading in buildings through building gaps and through openings, ensure the integrity and effectiveness of building fire protection and smoke-proof separation, ensure personal safety, and reduce fire losses. 1.0.2 This standard is applicable to the design, construction and acceptance of fireproof plugging of building gaps and through openings in construction projects. 1.0.3 The design, construction and acceptance of building fireproof sealing shall implement the relevant national policies and regulations, comply with the relevant laws and regulations of engineering construction, and be safe and applicable, economical and reasonable, environmentally friendly and healthy, and advanced in technology. 1.0.4 The design, construction and acceptance of building fireproof sealing shall not only comply with the provisions of this standard, but also comply with the relevant current national standards. 2 terms 2.0.1 firestop Use materials with certain fireproof, smokeproof, and heat insulation properties to seal or fill building gaps, through holes, etc., and can work with corresponding building structures or components within the designed fire resistance time to prevent heat, flames, and smoke. A fire-resistant construction measure that passes through. 2.0.2 Construction joint Gaps between building structures or components, gaps between other fireproof partitions and building structures or components, and gaps between equipment pipelines and structures or components when they pass through fire-resistant structures or components. 2.0.3 Penetrated item Building structures or components that need to pass through pipelines and other objects due to technological and functional requirements. 2.0.4 Penetration item An object passing through the penetrated body. 2.0.5 penetration opening The opening formed when the penetrating object passes through the penetrated body. 2.0.6 blank opening In order to meet the requirements of technology, function, etc., the openings reserved on the fire separation components or building structures. 2.0.7 Penetration firestop system 4.Building gap sealing design 4.0.1 The fireproof sealing of building gaps should be based on the location, expansion ratio, width and depth of the building gaps, as well as the ambient temperature and humidity conditions and waterproof requirements of the fireproof sealing materials or components, etc., and the appropriate fireproof sealing materials or components should be selected.. 4.0.2 The fireproof sealing of building gaps between floors, between floors and fire separation walls, and between fire separation walls shall meet the following requirements. 1 For gaps without vibration or expansion during use, backing materials such as mineral wool should be used to fill, and organic fireproof sealing materials should be covered outside the backing material; 2 For gaps that vibrate or expand during use, they should be filled with backing materials such as mineral wool, and the backing materials should be covered with elastic organic fireproof sealing materials. 4.0.3 The interlayer sealing of building curtain walls shall meet the following requirements. 1 The cavity between the curtain wall and the building window sill wall shall be filled with backing materials such as mineral wool at the upper and lower edges of the building gap respectively, and the filling height shall not be less than.200mm; the top of the backing material such as mineral wool shall be covered Elastic fireproof sealing material, under which the mineral wool should be provided with a supporting plate. 2 The cavity between the curtain wall and the firewall or fire partition wall shall be filled with backing materials such as mineral wool. The thickness of the filling shall not be less than that of the firewall or fire partition wall. Fire blocking material. 3 The supporting plate shall adopt steel supporting plate, and the thickness of the supporting plate shall not be less than 1.5mm. The gap between the supporting plate and the curtain wall, the building exterior wall and between the supporting plates shall be sealed with elastic fireproof sealing materials. 4 The structure of the fireproof seal shall be self-supporting and capable of adapting to the deformation of the gap. 4.0.4 The interlayer fireproof sealing of the cavity between the external thermal insulation system of the building's exterior wall and the base wall and decorative layer shall meet the following requirements. 1 The backing material such as mineral wool shall be used to fill completely at the level with the floor slab, and the filling height of the backing material shall not be less than.200mm; 2 The backing material such as mineral wool shall be covered with elastic fireproof sealing material; 3 The structure of the fireproof seal shall be self-supporting and capable of adapting to the deformation of the gap. 4.0.5 The fireproof sealing of settlement joints, expansion joints, seismic joints and other building deformation joints in fire separation parts shall meet the following requirements. 1 Backing materials such as mineral wool shall be used for packing; 2 The packing thickness of the backing material shall not be less than.200mm, and the lower part of the backing material shall be provided with a steel supporting plate, and the thickness of the supporting plate shall not be less than 1.5mm; 3 The gaps between the supporting plates and between the supporting plates and the main structure shall be filled with elastic fireproof sealing materials; 4 The backing material shall be covered with elastic fireproof sealing material. 5 Through hole plugging design1 For metal conduits, it shall meet the provisions of Article 5.2.1 or Article 5.2.3 of this standard; 2 For plastic conduits, it shall meet the provisions of Article 5.2.4 of this standard. 5.3.2 The fireproof plugging of cable penetration openings shall meet the following requirements. 1 When the annular gap of the through hole is small, it shall be sealed with expansive organic fireproof sealing material. 2 When the annular gap of the through hole is large, it shall be sealed with inorganic fireproof sealing material; or backing material such as mineral wool shall be used to fill and cover expansive organic fireproof The fire module is sealed, and the gap between the cable and the fireproof sealing plate or the fireproof module is filled with expansive fireproof sealing material. 3 The gap between cables should be sealed with expansive fireproof sealing material. 4 For high-voltage cables, elastic fireproof sealing materials should be used. 5.3.3 In addition to complying with the provisions of Article 5.2.1 of this standard, the fireproof plugging of the opening of the busway through the busway shall be sealed with expansive fireproof sealing material for the gap between the busbars in the busway. 5.3.4 The through hole of the non-enclosed cable trough box shall comply with the provisions of Article 5.3.2 of this standard. 5.3.5 The fireproof plugging of the penetration hole of the closed cable trough box shall comply with the following regulations. 1 For metal tank boxes, it shall comply with the provisions of Article 5.2.1 of this standard; 2 For plastic tank boxes, it shall comply with the provisions of Article 5.2.4 of this standard; 3.Expansive fire-proof sealing materials shall be used to seal the cable trough box at the penetrating part; 4 Places with vibration during use or high-voltage cable tray boxes should be sealed with elastic fireproof sealing materials. 5.3.6 The horizontal fire separation of each layer of the cable shaft shall be sealed with inorganic or expansive fireproof sealing materials; or filled with backing materials such as mineral wool and covered with expansive fireproof sealing materials; For plate sealing, the gap between the cable and the fireproof sealing plate shall be filled with expansive fireproof sealing material, which shall comply with the provisions of Article 5.3.1 and Article 5.3.2 of this standard. 5.4 Plugging of other through holes 5.4.1 When a variety of penetrations pass through the penetrated body mixedly, the fire protection seal shall comply with the relevant fire protection seal requirements of corresponding types of penetration openings in this standard. 5.4.2 Empty openings should choose a suitable fireproof sealing method according to the size of the opening, and should meet the following requirements. 1 Empty openings with an opening area less than or equal to 0.25㎡ should be sealed with inorganic or organic fireproof sealing materials; or filled with backing materials such as mineral wool and covered with organic fireproof sealing materials. 2 The empty openings with an opening area greater than 0.25㎡ should be sealed with inorganic fireproof sealing materials, fireproof sealing plates, fire retardant bags, and fire retardant modules, and the gaps should be sealed with organic fireproof sealing materials. 5.4.3 The gaps between fire doors, fire windows, guide rails and boxes of fire shutters and building structures or components shall be sealed with elastic fireproof sealing materials; or backing materials such as mineral wool shall be used for filling and Cover with elastic fireproof sealing materials; or use fireproof sealing boards and fire-blocking modules to seal, and the gaps should be sealed with elastic fireproof sealing materials.6 Construction and acceptance6.1 General provisions 6.1.1 The construction of building fireproof sealing shall be carried out in accordance with the design documents, technical instructions and operating procedures of corresponding products, and the structural requirements of fireproof sealing components. 6.1.2 Before construction, the construction unit should make the following preparations. 1 The site conditions shall be confirmed and corrected according to the design documents and technical descriptions of corresponding products, a specific construction plan shall be formulated, and the implementation shall be organized after being reviewed and approved by the supervisory unit; 2 The applicability and technical specifications of the fireproof sealing materials and auxiliary materials shall be checked one by one; 3 When site conditions such as the type and thickness of the penetrated body, the size of the penetration hole, the type and quantity of the penetration are inconsistent with the design requirements, the construction unit shall inform the design unit, and the design unit shall issue a design change document; 4 Necessary operating conditions such as construction machinery, tools and safety protection facilities should be prepared according to process requirements and site conditions. Formulate emergency plans for possible hazards at the construction site, and conduct disclosure, training and necessary drills. 6.1.3 During the construction period, protective measures to prevent contamination of the ground, walls and other building components or structural surfaces shall be taken according to the site conditions. 6.1.4 Quality inspection should be strengthened for important processes and key parts, and construction process inspection records should be filled in according to Appendix A of this standard, and image data should be retained at the same time. The fireproof sealing in concealed works shall be subject to intermediate acceptance before the concealed works are closed, and the corresponding quality acceptance records of concealed works shall be filled in according to Appendix B of this standard. 6.1.5 The completion acceptance of building fire prevention and sealing works shall comply with the relevant procedures for construction acceptance of construction projects. 6.2 Construction 6.2.1 Before the plugging operation, the building gaps, through-holes, penetrating objects and the surface of the penetrated body should be cleaned to remove sundries, grease, and loose objects on the structure, and should be kept dry. The plugging parts that need to be maintained should be maintained in accordance with the product use requirements after the sealing operation, and measures to prevent external disturbances should be taken during the maintenance period. 6.2.2 When mineral wool is used as the backing material, construction shall be carried out in accordance with the following regulations. 1 The compression of mineral wool should not be less than 30% of the natural state, and the thickness of the compressed mineral wool should be slightly larger than the width of the gap in the plugging part, and should meet the provisions of Article 3.0.3 of this standard; 2.The compacted mineral wool should be stuffed into the plugged part along the extrusion surface, and the mineral wool should be prevented from falling off by its back-swelling force, and should be flush with the surface of the part to be plugged; 3.The filling mineral wool should be verified by supervisors for its ability to prevent shedding before the next step of fireproof sealing construction can be carried out. 6.2.3 The inorganic blockage should be constructed according to the following sequence and requirements. 1.Temporary or permanent baffles should be set up at the blocking position; 2 Add water and stir the inorganic blocking material evenly according to the product requirements; 3.The stirred inorganic blocking material should be poured into the blocked part, and the surface should be smoothed; 4 The gap between the inorganic blockage material and the penetrating object and the penetrated body should be sealed after the maintenance period of the inorganic blockage material expires, and it should comply with the provisions of Article 3.0.4 of this standard. 6.2.4 Flexible organic blockage and fireproof sealant shall be constructed according to the following sequence and requirements. 1.According to the provisions of Article 6.2.2 of this standard, mineral wool should be used to fill the sealing position; 2 The plugging material should be filled with glue gun and other tools to smooth the surface, and it should meet the provisions of Article 3.0.5 and Article 3.0.6 of this standard. 6.2.5 The fireproof sealing paint shall be constructed according to the following sequence and requirements. 1.According to the provisions of Article 6.2.2 of this standard, mineral wool should be used to fill the sealing position; 2 The blocking material should be uniformly coated with brush or spraying equipment, and the thickness and lap width should meet the requirements of Article 3.0.7 of this standard. 6.2.6 Fire-blocking modules and fire-blocking packages shall be constructed in the following order and requirements. 1 The fire retardant modules should be stacked in a staggered manner, and should be firmly bonded according to the requirements of the product; 2 The gap between the fire-blocking module, the fire-blocking package, the penetrating object, and the penetrated body should be blocked, and it should meet the provisions of Article 3.0.8 of this standard. 6.2.7 The construction of the fireproof blocking board shall be carried out according to the following sequence and requirements. 1 The plate should be cut according to the shape and size of the plugging part, and the cutting edge should be passivated; 2 After the panel is installed, the gap between the panel and the penetrating object and the penetrated body shall be sealed according to the technical requirements of the corresponding product, and shall comply with the provisions of Article 3.0.9 of this standard. 6.2.8 The foam sealing material shall be constructed in the following sequence and requirements. 1.Temporary or permanent baffles should be set up at the blocking position; 2 The mixed material should be poured into the blocked part according to the provisions of Article 3.0.10 of this standard. 6.2.9 The fire-stop ring shall be constructed according to the following sequence and requirements. 1 The fireproof sealing material shall be tightly filled in the annular gap of the pipe penetration part according to the design requirements; 2 The fire arresting ring should be set on the through pipe; 3 Expansion bolts shall be used to fix the fire arresting ring on the building structure or components. 6.2.10 The fire retardant tape shall be constructed according to the following sequence and requirements. 1 The fire-resistant tape should be wound on the penetration according to the product requirements, and should be slowly pushed into the annular gap of the penetration part, or fixed with a special hoop with fire-proof performance outside the fire-resistant tape; 2 The annular gap of the penetration part shall be sealed with expandable flexible organic blocking material or fireproof sealant, and shall comply with the provisions of Article 3.0.5 and Article 3.0.6 of this standard. 6.3 Acceptance 6.3.1 After the fire prevention and sealing works are completed, the construction unit shall organize self-inspection and self-inspection of construction quality. After self-inspection and self-inspection, the following documents shall be submitted to the construction unit. 1 Completion report of the fire prevention and sealing project; 2 Qualified inspection reports of fireproof sealing materials and components; 3 construction process inspection records; 4 Acceptance records of concealed works; 5 Self-inspection and self-inspection records after construction is completed. 6.3.2 The material selection and construction methods for fireproof sealing of building gaps shall meet the design and construction requirements. 1 The appearance of the firestop should be inspected. Inspection Quantity. Full inspection. Inspection method. Visually inspect whether there are any phenomena such as shedding, deformation, and cracking. 2 The width of the firestop should be checked. Quantity to be inspected. 20% of the total number of building gap sealings shall be randomly inspected in each fire compartment, and no less than 5 places shall be taken, and 5 points shall be taken for each place. When there are less than 5 fireproof seals of the same type, all of them shall be inspected. Inspection method. measure the width of the gap sealing with a ruler, and take the average of 5 points. 3 The depth of the firestop should be checked. Quantity to be inspected. 20% of the total number of building gap closures shall be randomly inspected in each fire compartment, and no less than 5 places shall be sampled, and 5 points shall be sampled at each place. 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