1 General provisions
1.0.1 The specifications is formulated to make the design, manufacturing and installation of metal roofing in areas prone to strong winds and with the basic wind pressure of not less than 0.5KN/m2 conform to the national technical and economic policies and green evaluation standards, so as to achieve advanced technology, safety and durability, reduce wind damage and ensure quality and economic rationality.
1.0.2 The specifications is applicable to the design, manufacturing, installation, acceptance, testing, maintenance and repair of metal roofing of constructed, extended and renovated industrial and civil buildings in areas prone to strong winds.
1.0.3 In addition to the specifications, the design, manufacturing, installation, acceptance, testing, maintenance and repair of metal roofing shall also meet the current relevant standards of the nation.
2 Terms and symbols
2.1 Terms
2.1.1 metal roofing
building roofing system that is mainly made of profiled metal sheet and connected to the main structure via fasteners (such as screws), components and secondary structures, and combines the built-up functional structural layers of heat insulating, waterproof, moisture-proof, vapor-proof, sound-absorbing and sound-insulating materials, so as to meet the functional requirements of the building, and transfer the loads and actions to the building roofing system of the main structure; it includes single-skin metal roofing and built-up metal roofing
2.1.2 single-skin metal roofing
roofing system formed by directly fixing the single-skin profiled metal roofing panel system on secondary structure only considering the functions of shading, rain protection and waterproofing, without the structural layer of thermal insulation and other functions
2.1.3 built-up metal roofing
roofing system which connects prefabricated components with multiple functions such as bottom plate, heat insulating material, internal support, membrane and metal roofing panel together by fasteners
2.1.4 profiled metal sheet
finished metal sheet with continuous waveform or other sections along the sheet width direction through rolling and cold bending
2.1.5 component
single component bearing various actions in the metal roofing, or a component of a system
2.1.6 fastener
part used for structural connection between metal sheets and between metal sheet and flashing plate
2.1.7 attached facilities
mainly referring to the wind-resistant fixtures, maintenance and overhaul passages, ladders, snow protection facilities, lightning protection facilities, photovoltaic systems, decoration systems, etc. of building metal roofing
2.1.8 strong wind area
area where the basic wind pressure at a recurrence interval of 50 years is not less than 0.5kN/m2 and other areas prone to typhoons
2.1.9 high wind pressure zone
high wind pressure zone on roofing refers to the area with large positive and negative wind pressure locally due to potential strong air flow and separation under the action of wind, such as the edges and corners of the roofing
2.1.10 wind sensitive zone
wind sensitive zone on roofing refers to the corner part of high wind pressure zone, which shall be determined by wind tunnel test
2.1.11 sealing waterline
position preventing water from invading the building by connecting the profiled metal sheets through engagement and locking
2.1.12 product testing of metal roof system
overall quality determination assurance and method of the metal roofing system manufacturer on the produced system, including side flashing; generally, the system performance index shall be obtained after a series of testings by calculation and testing organizations; the manufacturer of metal roofing system shall take quality control measures to ensure that the system quality meets the system performance index of product testing
Foreword i
1 General provisions
2 Terms and symbols
2.1 Terms
2.2 Symbols
3 Basic requirements
4 Metal roofing materials
4.1 General requirements
4.2 Purlin
4.3 Substructure components
4.4 Fixing clips
4.5 Fasteners
4.6 Profiled metal sheet
4.7 Vapor barrier and breather membranes
4.8 Thermal insulation materials
4.9 Sealing materials
4.10 Miscellaneous materials
5 Construction design
5.1 General requirements
5.2 Waterproof and drainage design
5.3 Thermal insulation and moisture-proof design
5.4 Fire protection design
5.5 Lightning protection design
5.6 Sound insulation and noise reduction design
5.7 Weather resistance design
5.8 Temperature deformation design
5.9 Design of attached facilities
5.10 Detailed structural design
6 Structural design
6.1 General requirements
6.2 Load action and effect
6.3 Profiled metal sheet
6.4 Construction requirements
7 Fabrication, transportation and storage
7.1 General requirements
7.2 Fabrication requirements
7.3 Permissible deviation
7.4 Transportation
7.5 Storage
8 Installation
8.1 General requirements
8.2 Installation of substructure components and fixing chips
8.3 Laying of sound insulation and sound absorption layer, vapor barrier, breather membrane and thermal insulation layer
8.4 Installation of profiled metal sheet
8.5 Installation of other components
9 Quality acceptance
9.1 General requirements
9.2 Quality control and inspection batch division requirements
9.3 Safety and function requirements
10 Maintenance and repair
10.1 General requirements
10.2 Maintenance and repair
11 Metal roofing performance testing
11.1 General requirements
11.2 Testing regulations
Annex A Metal roofing performance testing method
A.1 Weather resistance testing method
A.2 Test method for wind driven rain penetration on metal roofing
A.3 External fire protection testing method of metal roofing
A.4 Test method for metal roofing displacement
A.5 Fatigue resistance test of external attachment of metal roofing
A.6 Wind resistance testing method for metal roofing
A.7 Classification and testing method of impact performance of metal roofing against wind-borne debris
A.8 Treading test procedure and method
A.9 Method for wind resistance detection of metal roofing prominent members
A.10 Fatigue resistance test of connecting members
Annex B Chemical composition and mechanical properties of steel, aluminum alloy and stainless steel
Annex C Performance requirements for thermal insulation materials of metal roofing
Annex D Distribution map of wind pressure in strong wind area
D.1 Distribution map of wind pressure in strong wind area in China
D.2 Distribution map of wind pressure in strong wind area in the province
Annex E Schematic diagram for wind sensitive zone and connection details
Annex F Acceptance requirements for inspection quality of raw materials and components
F.1 Site acceptance of raw materials and products
F.2 Manufacture quality acceptance
F.3 Installation quality acceptance
Explanation of wording in the specifications
List of quoted codes
1 General provisions
1.0.1 The specifications is formulated to make the design, manufacturing and installation of metal roofing in areas prone to strong winds and with the basic wind pressure of not less than 0.5KN/m2 conform to the national technical and economic policies and green evaluation standards, so as to achieve advanced technology, safety and durability, reduce wind damage and ensure quality and economic rationality.
1.0.2 The specifications is applicable to the design, manufacturing, installation, acceptance, testing, maintenance and repair of metal roofing of constructed, extended and renovated industrial and civil buildings in areas prone to strong winds.
1.0.3 In addition to the specifications, the design, manufacturing, installation, acceptance, testing, maintenance and repair of metal roofing shall also meet the current relevant standards of the nation.
2 Terms and symbols
2.1 Terms
2.1.1 metal roofing
building roofing system that is mainly made of profiled metal sheet and connected to the main structure via fasteners (such as screws), components and secondary structures, and combines the built-up functional structural layers of heat insulating, waterproof, moisture-proof, vapor-proof, sound-absorbing and sound-insulating materials, so as to meet the functional requirements of the building, and transfer the loads and actions to the building roofing system of the main structure; it includes single-skin metal roofing and built-up metal roofing
2.1.2 single-skin metal roofing
roofing system formed by directly fixing the single-skin profiled metal roofing panel system on secondary structure only considering the functions of shading, rain protection and waterproofing, without the structural layer of thermal insulation and other functions
2.1.3 built-up metal roofing
roofing system which connects prefabricated components with multiple functions such as bottom plate, heat insulating material, internal support, membrane and metal roofing panel together by fasteners
2.1.4 profiled metal sheet
finished metal sheet with continuous waveform or other sections along the sheet width direction through rolling and cold bending
2.1.5 component
single component bearing various actions in the metal roofing, or a component of a system
2.1.6 fastener
part used for structural connection between metal sheets and between metal sheet and flashing plate
2.1.7 attached facilities
mainly referring to the wind-resistant fixtures, maintenance and overhaul passages, ladders, snow protection facilities, lightning protection facilities, photovoltaic systems, decoration systems, etc. of building metal roofing
2.1.8 strong wind area
area where the basic wind pressure at a recurrence interval of 50 years is not less than 0.5kN/m2 and other areas prone to typhoons
2.1.9 high wind pressure zone
high wind pressure zone on roofing refers to the area with large positive and negative wind pressure locally due to potential strong air flow and separation under the action of wind, such as the edges and corners of the roofing
2.1.10 wind sensitive zone
wind sensitive zone on roofing refers to the corner part of high wind pressure zone, which shall be determined by wind tunnel test
2.1.11 sealing waterline
position preventing water from invading the building by connecting the profiled metal sheets through engagement and locking
2.1.12 product testing of metal roof system
overall quality determination assurance and method of the metal roofing system manufacturer on the produced system, including side flashing; generally, the system performance index shall be obtained after a series of testings by calculation and testing organizations; the manufacturer of metal roofing system shall take quality control measures to ensure that the system quality meets the system performance index of product testing
Contents of DBJ/T 15-148-2018
Foreword i
1 General provisions
2 Terms and symbols
2.1 Terms
2.2 Symbols
3 Basic requirements
4 Metal roofing materials
4.1 General requirements
4.2 Purlin
4.3 Substructure components
4.4 Fixing clips
4.5 Fasteners
4.6 Profiled metal sheet
4.7 Vapor barrier and breather membranes
4.8 Thermal insulation materials
4.9 Sealing materials
4.10 Miscellaneous materials
5 Construction design
5.1 General requirements
5.2 Waterproof and drainage design
5.3 Thermal insulation and moisture-proof design
5.4 Fire protection design
5.5 Lightning protection design
5.6 Sound insulation and noise reduction design
5.7 Weather resistance design
5.8 Temperature deformation design
5.9 Design of attached facilities
5.10 Detailed structural design
6 Structural design
6.1 General requirements
6.2 Load action and effect
6.3 Profiled metal sheet
6.4 Construction requirements
7 Fabrication, transportation and storage
7.1 General requirements
7.2 Fabrication requirements
7.3 Permissible deviation
7.4 Transportation
7.5 Storage
8 Installation
8.1 General requirements
8.2 Installation of substructure components and fixing chips
8.3 Laying of sound insulation and sound absorption layer, vapor barrier, breather membrane and thermal insulation layer
8.4 Installation of profiled metal sheet
8.5 Installation of other components
9 Quality acceptance
9.1 General requirements
9.2 Quality control and inspection batch division requirements
9.3 Safety and function requirements
10 Maintenance and repair
10.1 General requirements
10.2 Maintenance and repair
11 Metal roofing performance testing
11.1 General requirements
11.2 Testing regulations
Annex A Metal roofing performance testing method
A.1 Weather resistance testing method
A.2 Test method for wind driven rain penetration on metal roofing
A.3 External fire protection testing method of metal roofing
A.4 Test method for metal roofing displacement
A.5 Fatigue resistance test of external attachment of metal roofing
A.6 Wind resistance testing method for metal roofing
A.7 Classification and testing method of impact performance of metal roofing against wind-borne debris
A.8 Treading test procedure and method
A.9 Method for wind resistance detection of metal roofing prominent members
A.10 Fatigue resistance test of connecting members
Annex B Chemical composition and mechanical properties of steel, aluminum alloy and stainless steel
Annex C Performance requirements for thermal insulation materials of metal roofing
Annex D Distribution map of wind pressure in strong wind area
D.1 Distribution map of wind pressure in strong wind area in China
D.2 Distribution map of wind pressure in strong wind area in the province
Annex E Schematic diagram for wind sensitive zone and connection details
Annex F Acceptance requirements for inspection quality of raw materials and components
F.1 Site acceptance of raw materials and products
F.2 Manufacture quality acceptance
F.3 Installation quality acceptance
Explanation of wording in the specifications
List of quoted codes
