标签归档：Eurocode

欧洲规范-无矛盾补充信息NCCI算例

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使用欧洲规范EC3，并结合NCCI可以解决大多数钢结构设计问题，如想进一步了解可以看英国钢结构协会的出版物。如仍然存在疑难问题也可咨询本人。

Non-Contradictory Complementary Information Example

NCCI Example Non-Contradictory Complementary Information Example
SX001a-EN-EU Simply supported laterally unrestrained
SX002a-EN-EU Buckling resistance of a pinned column with intermediate restraints
SX003a-EN-EU Simply supported beam with intermediate lateral restraints
SX004a-EN-EU Pinned column using non-slender H-section or RHS
SX005a-EN-EU Choosing a steel sub-grade
SX006a-EN-EU Calculation of alpha-cr
SX007a-EN-EU Simply supported beam with lateral restraint at load application point
SX008a-EN-EU Sway stability
SX009a-EN-EU Composite floor slab
SX010a-EN-EU Continuous column in a multi-storey building using an H-section or RHS
SX011a-EN-EU Unrestrained beam with end moments
SX012a-EN-EU End plate beam-to-column-flange simple connection
SX013a-EN-EU Fin plate beam-to-column-flange connection
SX014a-EN-EU Simply supported secondary composite beam
SX015a-EN-EU Simply supported primary composite beam
SX016a-EN-EU Determination of loads on a building envelope
SX017a-EN-EU Single span truss and post frame for a low pitch roof using battened section chords
SX018a-EN-EU Column splice – non-bearing splice
SX019a-EN-EU Column base connection under axial compression
SX020a-EN-EU Tying and the avoidance of disproportionate collapse
SX021a-EN-EU Simply supported IPE profile purlin
SX022a-EN-EU Calculation of effective section properties for a cold-formed lipped channel section in bending
SX023a-EN-EU Calculation of effective section properties for a cold-formed lipped channel section in compression
SX024a-EN-EU Design of a cold-formed steel lipped
SX025a-EN-EU Design of a cold-formed steel lipped channel wall stud in tension
SX026a-EN-EU Design and serviceability limit state check of a cold-formed steel member in bending
SX027a-EN-EU Design of a cold-formed steel lipped channel wall stud in compression and bending
SX028a-EN-EU Design resistance of a screwed connection of cold-formed members
SX029a-EN-EU Elastic analysis of a single bay portal frame
SX030a-EN-EU Elastic design of a single bay portal frame made of fabricated profiles
SX031a-EN-EU Portal frame – eaves moment connection
SX033b-EN-EU Truss or post end connection
SX034a-EN-EU Bolted connection of an angle brace in tension to a gusset plate
SX036a-EN-EU Fire resistance of a welded box section
SX037a-EN-EU Fire resistance of a composite slab to EN 1994-1-2
SX038a-EN-EU Fire resistance of a partially encased composite steel beam
SX039a-EN-EU Fire resistance of a partially encased composite column
SX040a-EN-EU Fire engineering a composite SHS column
SX041a-EN-EU Fire design of an unprotected beam using graphs
SX042a-EN-EU Parametric fire curve for a fire
SX043a-EN-EU Fire design of unprotected HEB section
SX044a-EN-EU Fire design of a protected HEB section column exposed to the standard temperature time curve
SX045a-EN-EU Fire design of a protected HEB section column exposed to the parametric fire curve
SX046a-EN-EU Fire design of an unprotected IPE section beam exposed to the standard time temperature curve
SX047a-EN-EU Fire design of protected IPE section beam exposed to parametric fire curve
SX048a-EN-EU Fire design of a protected unrestrained HEA section beam exposed to the standard temperature time curve

欧洲规范-无矛盾补充信息NCCI

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仅供学习交流，请勿用于商业用途。禁止转载。

由于涉及著作版权，不对外提供。

使用欧洲规范EC3，并结合NCCI可以解决大多数钢结构设计问题，如想进一步了解可以看英国钢结构协会的出版物。如仍然存在疑难问题也可咨询本人。

Eurocode Non-Contradictory Complementary Information

NCCI Non-Contradictory Complementary Information
SN001a-EN-EU Critical axial load for torsional and flexural torsional
SN002a-EN-EU Determination of non-dimensional slenderness of I and H sections
SN003a-EN-EU Elastic critical moment for lateral torsional buckling
SN004a-EN-EU Calculation of alpha-cr
SN005a-EN-EU Determination of moments on columns in simple construction
SN006a-EN-EU Elastic critical moment of cantilevers
SN007a-EN-EU Torsion
SN008a-EN-EU Buckling lengths of columns – rigorous approach
SN009a-EN-EU Effective lengths and destabilizing load parameters for beams and cantilevers – common cases
SN010a-EN-EU Initial Design of non-Composite Beams
SN012a-EN-EU Sizing guidance – non-composite columns (H sections)
SN013a-EN-EU Initial sizing of simple end plate connections
SN014a-EN-EU Shear resistance of a simple end plate connection
SN015a-EN-EU Tying resistance of a simple end plate connection
SN016a-EN-EU Initial sizing of fin plate connections
SN017a-EN-EU Shear resistance of a fin plate connection
SN018a-EN-EU Tying resistance of a fin plate connection
SN019a-EN-EU Design rules for web openings in beams
SN020a-EN-EU Simple Construction – concept and typical frame
SN021a-EN-EU Design of simple column bases with shear nibs
SN022a-EN-EU Initial Design of Composite Beams
SN023a-EN-EU Design model for non-bearing column splices
SN024a-EN-EU Initial sizing of non-bearing column splices
SN025a-EN-EU Column splices not requiring full continuity of stiffeness
SN026a-EN-EU Bearing column splices
SN027a-EN-EU Design of roof trusses
SN028a-EN-EU Initial sizing of vertical bracing for a multi-storey building for design as a braced, non-sway frame
SN029a-EN-EU Modelling of portal frames – elastic analysis
SN030a-EN-EU Mono-symmetrical uniform members under bending and axial compression
SN031a-EN-EU Effective lengths of columns and truss elements in truss portal frame construction
SN032a-EN-EU General method for out-of-plane buckling in portal frames
SN033a-EN-EU Simple methods for second order effects in portal frames
SN034a-EN-EU Vertical and horizontal deflection limits for multi-storey buildings
SN035a-EN-EU Practical deflection limits for single storey buildings
SN036a-EN-EU Vibrations
SN037a-EN-EU Design model for simple column bases- axially loaded I section columns
SN038a-EN-EU Design of a notched section at the end of a beam
SN039a-EN-EU Practical analytical models for portal frames (plastic analysis)
SN040a-EN-EU Design model for welded joints in trusses using structural hollow sections
SN041a-EN-EU Design of portal frame eaves connections
SN042a-EN-EU Design of portal frame apex connections
SN043a-EN-EU Design of fixed column base joints
SN044a-EN-EU Design models for splices in structural hollow
SN045a-EN-EU Column base stiffness for global analysis
SN046a-EN-EU Design of out of plane and transverse restraint systems for portal frames
SN047a-EN-EU Simplified approaches to the selection of equivalent horizontal forces for the global analysis of braced and unbraced frames
SN048b-EN-GB Verification of columns in simple construction – a simplified interaction criterion

欧洲规范3 常用引用标准

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EN 1993 Reference Standards: General

Eurocode Part Title
BS EN 1090-1: 2009 Execution of steel structures and aluminium structures – Part 1: Requirements for conformity assessment of structural components
BS EN 1090-2: 2008 Execution of steel structures and aluminium structures – Part 2: Technical requirements for the execution of steel structures
BS EN 1090-3: 2008 Execution of steel structures and aluminium structures – Part 3: Technical requirements for aluminium structures
BS EN 13670: 2009 Execution of concrete structures
BS EN ISO 1461: 2009 Hot dip galvanized coatings on fabricated iron and steel articles – Specifications and test methods
DIN EN ISO 12944-1: 1998 Corrosion protection of steel structures by protective paint systems – Part 1: General introduction
EN ISO 12944-2: 1998 Corrosion protection of steel structures by protective paint systems – Part 2: Classification des environnements
DIN EN ISO 12944-3: 1998 Corrosion protection of steel structures by protective paint systems – Part 3: Design considerations
DIN EN ISO 12944-4: 1998 Corrosion protection of steel structures by protective paint systems – Part 4: Types of surface and surface preparation
EN ISO 12944-5: 2007 Corrosion protection of steel structures by protective paint systems – Part 5: Protective paint systems
DIN EN ISO 12944-6: 1998 Corrosion protection of steel structures by protective paint systems – Part 6: Laboratory performance test methods
DIN EN ISO 12944-7: 1998 Corrosion protection of steel structures by protective paint systems – Part 7: Execution and supervision of paint work
DIN EN ISO 12944-8: 1998 Corrosion protection of steel structures by protective paint systems – Part 8: Development of specifications for new work and maintenance

 

EN 1993 Reference Standards: Weldable structural steels

Eurocode Part Title
BS EN 10025-1: 2004 Hot-rolled products of structural steels – Part 1: General delivery conditions
BS EN 10025-2: 2004 Hot-rolled products of structural steels – Part 2: Technical delivery conditions for nonalloy structural steels
BS EN 10025-3: 2004 Hot-rolled products of structural steels – Part 3: Technical delivery conditions for normalized / normalized rolled weldable fine grain structural steels
BS EN 10025-4: 2004 Hot-rolled products of structural steels – Part 4: Technical delivery conditions for thermomechanical rolled weldable fine grain structural steels
BS EN 10025-5: 2004 Hot-rolled products of structural steels – Part 5: Technical delivery conditions for structural steels with improved atmospheric corrosion resistance
BS EN 10025-6: 2004 Hot-rolled products of structural steels – Part 6: Technical delivery conditions for flatproducts of high yield strength structural steels in the quenched and tempered condition
BS EN 10164: 2004 Steel products with improved deformation properties perpendicular to the surface of the product – Technical delivery conditions
BS EN 10210-1: 1994 Hot finished structural hollow sections of non-alloy and fine grain structural steels – Part 1: Technical delivery requirements
BS EN 10210-2: 1997 Hot finished structural hollow sections of non-alloy and fine grain structural steels – Part 2: Tolerances, dimensions and sectional properties
BS EN 10219-1: 2006 Cold formed hollow sections of structural steel – Part 1: Technical delivery requirements
BS EN 10219-2: 2006 Cold formed hollow sections of structural steel – Part 2: Tolerances, dimensions and sectional properties

 

EN 1993 Reference Standards: Tolerances, dimensions and technical delivery conditions

Eurocode Part Title
BS EN 10029: 2010 Hot rolled steel plates 3 mm thick or above – Tolerances on dimensions, shape and mass
BS EN 10034: 1993 Structural steel I- and H-sections – Tolerances on shape and dimensions
BS EN 10051: 1992 Continuously hot-rolled uncoated plate, sheet and strip of non-alloy and alloy steels – Tolerances on dimensions and shape
BS EN 10055: 1996 Hot rolled steel equal flange tees with radiused root and toes – Dimensions and tolerances on shape and dimensions
BS EN 10056-1: 1999 Structural steel equal and unequal leg angles – Part 1: Dimensions
BS EN 10056-2: 1993 Structural steel equal and unequal leg angles – Part 2: Tolerances on shape and dimensions

 

EN 1993 Reference Standards: Bolts, nuts and washers

Eurocode Part Title
BS EN 14399-1: 2005 High strength structural bolting assemblies for preloading – Part 1: General requirements
BS EN 14399-2: 2005 High strength structural bolting assemblies for preloading – Part 2: Suitability test for preloading
BS EN 14399-3: 2005 High strength structural bolting assemblies for preloading – Part 3: System HR – Hexagon bolt and nut assemblies
BS EN 14399-4: 2005 High strength structural bolting assemblies for preloading – Part 4: System HV – Hexagon bolt and nut assemblies
BS EN 14399-5: 2005 High strength structural bolting assemblies for preloading – Part 5: Plain washers
BS EN 14399-6: 2005 High strength structural bolting assemblies for preloading – Part 6: Plain chamfered washers
BS EN 14399-7: 2007 High strength structural bolting assemblies for preloading – Part 7: System HR – Countersunk head bolt and nut assemblies
BS EN 14399-8: 2007 High strength structural bolting assemblies for preloading – Part 8: System HV – Hexagon fit bolts and nut assemblies
BS EN 14399-9: 2009 High strength structural bolting assemblies for preloading – Part 9: System HR or HV – Direct tension indicators for bolt and nut assemblies
BS EN 14399-10: 2009 High strength structural bolting assemblies for preloading – Part 10: System HRC – Bolt and nut assemblies with calibrated preload
ISO 898-1: 2009 Mechanical properties of fasteners made of carbon steel and alloy steel – Part 1: Bolts, screws and studs with specified property classes – Coarse thread and fine pitch thread
ISO 898-2: 1992 Mechanical properties of fasteners – Part 2: Nuts with specified proof load values – Coarse thread
BS EN ISO 2320: 2008 Prevailing torque type steel nuts – Mechanical and performance properties
BS EN ISO 4014: 2001 Hexagon head bolts – Product grades A and B
DIN EN ISO 4016: 2001 Hexagon head bolts – Product grade C
BS EN ISO 4017: 2001 Hexagon head screws – Product grades A and B
DIN EN ISO 4018: 2001 Hexagon head screws – Product grade C
ISO 4032: 1999 Hexagon nuts, style 2 – Product grades A and B
BS EN ISO 4033: 2001 Hexagon nuts, style 2 – Product grades A and B
BS EN ISO 4034: 2001 Hexagon nuts – Product grade C

 

EN 1993 Reference Standards: Welding consumable and welding

Eurocode Part Title
BS EN 12345: 1999 Welding – multilingual terms for welded joints with illustrations
BS EN ISO 14555: 2006 Welding – Arc stud welding of metallic materials
ISO 13918: 2008 Welding – Studs and ceramic ferrules for arc stud welding
EN ISO 5817: 2003 Welding – Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) – Quality levels for imperfections
BS EN 288-1: 1992 Specification and approval of welding procedures for metallic materials – Part 1: General rules for fusion welding
BS EN 288-2: 1992 Specification and approval of welding procedures for metallic materials – Part 2: Welding procedure specification for arc welding
BS EN 288-3: 1992 Specification and approval of welding procedures for metallic materials – Part 3: Welding procedure tests for the arc welding of steels
BS EN 288-4: 1992 Specification and approval of welding procedures for metallic materials – Part 4: Welding procedure tests for the arc welding of aluminium and its alloys
BS EN 288-5: 1995 Specification and approval of welding procedures for metallic materials – Part 5: Approval by using approved welding consumables for arc welding
BS EN 288-6: 1995 Specification and approval of welding procedures for metallic materials – Part 6: Approval related to previous experience
BS EN 288-7: 1995 Specification and approval of welding procedures for metallic materials – Part 7: Approval by a standard welding procedure for arc welding
BS EN 288-8: 1995 Specification and approval of welding procedures for metallic materials – Part 8: Approval by a pre-production welding test
BS EN 288-9: 1999 Specification and approval of welding procedures for metallic materials – Part 9: Welding procedure test for pipeline welding on land and offshore site butt welding of transmission pipelines

 

EN 1993 Reference Standards: Others

Eurocode Part Title
BS EN 10147: 2000 Continuously hot-dip zinc coated structural steels strip and sheet – Technical delivery conditions
BS EN 10149-1: 1996 Hot-rolled flat products made of high yield strength steels for cold forming – Part 1: General delivery conditions
BS EN 10149-2: 1996 Hot-rolled flat products made of high yield strength steels for cold forming – Part 2: Delivery conditions for thermomechanically rolled steels
BS EN 10149-3: 1996 Hot-rolled flat products made of high yield strength steels for cold forming – Part 3: Delivery conditions for normalized or normalized rolled steels

 

BS EN EUROCODE 欧洲规范

仅供学习交流，请勿用于商业用途。禁止转载。

由于涉及著作版权，不对外提供。

使用欧洲规范EC3，并结合NCCI可以解决大多数钢结构设计问题，如想进一步了解可以看英国钢结构协会的出版物。如仍然存在疑难问题也可咨询本人。

 

EUROCODS

Eurocode Part Title Publication Date UK National Annex Publication Date
BS EN 1990 Eurocode 0: Basis of structural design 1 Jul 02 15 Dec 04
BS EN 1991-1-1 Eurocode 1: Actions on structures – Part 1-1: General actions – Densities, self-weight and imposed loads 29 Jul 02 30 Dec 05
BS EN 1991-1-2 Eurocode 1: Actions on structures – Part 1-2: General actions – Actions on structures exposed to fire 26 Nov 02 30 Apr 07
BS EN 1991-1-3 Eurocode 1: Actions on structures – Part 1-3: General actions – Snow loads 24 Jul 03 23 Dec 05
BS EN 1991-1-4 Eurocode 1: Actions on structures – Part 1-4: General actions – Wind actions 25 Apr 05 30 Sep 08
BS EN 1991-1-5 Eurocode 1: Actions on structures – Part 1-5: General actions – Thermal actions 4 Mar 04 30 Apr 07
BS EN 1991-1-6 Eurocode 1: Actions on structures – Part 1-6: General actions – Actions during execution 15 Dec 05 30 May 08
BS EN 1991-1-7 Eurocode 1: Actions on structures – Part 1-7: General actions – Accidental actions 29 Sep 06 31 Dec 08
BS EN 1991-2 Eurocode 1: Actions on structures – Part 2: Traffic loads on bridges 31 Oct 03 30 May 08
BS EN 1991-3 Eurocode 1: Actions on structures – Part 3: Actions induced by cranes and machinery 29 Sep 06 31 Aug 09
BS EN 1991-4 Eurocode 1: Actions on structures – Part 4: Silos and tanks 30 Jun 06 30 Nov 09
BS EN 1992-1-1 Eurocode 2: Design of concrete structures – Part 1-1: General – Common rules for building and civil engineering structures 23 Dec 04 8 Dec 05
BS EN 1992-1-2 Eurocode 2: Design of concrete structures – Part 1-2: General – Structural fire design 1 Feb 05 8 Dec 05
BS EN 1992-2 Eurocode 2: Design of concrete structures – Part 2: Bridges 2 Dec 05 31 Dec 07
BS EN 1992-3 Eurocode 2: Design of concrete structures – Part 3: Liquid retaining and containment structures 31 Jul 06 31 Oct 07
BS EN 1993-1-1 Eurocode 3: Design of steel structures – Part 1-1: General rules and rules for buildings 18 May 05 31 Dec 08
BS EN 1993-1-2 Eurocode 3: Design of steel structures – Part 1-2: General – Structural fire design 29 Apr 05 30 Nov 08
BS EN 1993-1-3 Eurocode 3: Design of steel structures – Part 1-3: General – Cold formed thin gauge members and sheeting 30 Nov 06 28 Feb 09
BS EN 1993-1-4 Eurocode 3: Design of steel structures – Part 1-4: General – Structures in stainless steel 30 Nov 06 28 Feb 09
BS EN 1993-1-5 Eurocode 3: Design of steel structures – Part 1-5: General – Strength and stability of planar plated structures without transverse loading 30 Nov 06 30 May 08
BS EN 1993-1-6 Eurocode 3: Design of steel structures – Part 1-6: General – Strength and stability of shell structures 31 May 07 31 May 07
BS EN 1993-1-7 Eurocode 3: Design of steel structures – Part 1-7: General – Design values for plated structures subjected to out of plane loading 31 Jul 07 31 Jul 07
BS EN 1993-1-8 Eurocode 3: Design of steel structures – Part 1-8: General – Design of joints 17 May 05 30 Nov 08
BS EN 1993-1-9 Eurocode 3: Design of steel structures – Part 1-9: General – Fatigue strength 18 May 05 30 May 08
BS EN 1993-1-10 Eurocode 3: Design of steel structures – Part 1-10: General – Material toughness and through thickness assessment 18 May 05 31 Jan 09
BS EN 1993-1-11 Eurocode 3: Design of steel structures – Part 1-11: General – Design of structures with tension components 30 Nov 06 31 Dec 08
BS EN 1993-1-12 Eurocode 3: Design of steel structures – Part 1-12: General – Supplementary rules for high strength steels 31 May 07 30 May 08
BS EN 1993-2 Eurocode 3: Design of steel structures – Part 2-1: Bridges 30 Nov 06 30 May 08
BS EN 1993-3-1 Eurocode 3: Design of steel structures – Part 3-1 Towers, masts and chimneys – Towers and masts 30 May 08 31 Mar 10
BS EN 1993-3-2 Eurocode 3: Design of steel structures – Part 3-2: Towers, masts and chimneys – Chimneys 30 May 08 30 May 08
BS EN 1993-4-1 Eurocode 3: Design of steel structures – Part 4-1: Silos, tanks and pipelines – Silos 31 May 07 31 May 07
BS EN 1993-4-2 Eurocode 3: Design of steel structures – Part 4-2: Silos, tanks and pipelines – Tanks 31 May 07 31 May 07
BS EN 1993-4-3 Eurocode 3: Design of steel structures – Part 4-3: Silos, tanks and pipelines – Pipelines 31 May 07 31 May 07
BS EN 1993-5 Eurocode 3: Design of steel structures – Part 5: Piling 30 Apr 07 31 Jul 09
BS EN 1993-6 Eurocode 3: Design of steel structures – Part 6: Crane supporting structures 31 Jul 07 30 Nov 09
BS EN 1994-1-1 Eurocode 4: Design of composite steel and concrete structures – Part 1-1: General – Common rules and rules for buildings 18 Feb 05 29 Aug 08
BS EN 1994-1-2 Eurocode 4: Design of composite steel and concrete structures – Part 1-2: General – Structural fire design 5 Dec 05 29 Aug 08
BS EN 1994-2 Eurocode 4: Design of composite steel and concrete structures – Part 2: Bridges 2 Dec 05 31 Dec 07
BS EN 1995-1-1 Eurocode 5: Design of timber structures – Part 1-1: General – Common rules and rules for buildings 15 Dec 04 31 Oct 06
BS EN 1995-1-2 Eurocode 5: Design of timber structures – Part 1-2: General – Structural fire design 15 Dec 04 31 Oct 06
BS EN 1995-2 Eurocode 5: Design of timber structures – Part 2: Bridges 15 Dec 04 31 Oct 06
BS EN 1996-1-1 Eurocode 6: Design of masonry structures – Part 1-1: General – Rules for reinforced and unreinforced masonry, including lateral loading 30 Dec 05 31 May 07
BS EN 1996-1-2 Eurocode 6: Design of masonry structures – Part 1-2: General – Structural fire design 30 Jun 05 31 May 07
BS EN 1996-2 Eurocode 6: Design of masonry structures – Part 2: Selection and execution of masonry 15 Feb 06 31 May 07
BS EN 1996-3 Eurocode 6: Design of masonry structures – Part 3: Simplified calculation methods for masonry structures 15 Feb 06 31 May 07
BS EN 1997-1 Eurocode 7: Geotechnical design – Part 1: General rules 22 Dec 04 30 Nov 07
BS EN 1997-2 Eurocode 7: Geotechnical design – Part 2: Ground investigation and testing 30 Apr 07 31 Dec 09
BS EN 1998-1 Eurocode 8: Design of structures for earthquake resistance – Part 1: General rules seismic actions and rules for buildings 8 Apr 05 29 Aug 08
BS EN 1998-2 Eurocode 8: Design of structures for earthquake resistance – Part 2: Bridges 20 Dec 05 30 Jun 09
BS EN 1998-3 Eurocode 8: Design of structures for earthquake resistance – Part 3: Strengthening and repair of buildings 11 Jan 06 11 Jan 06
BS EN 1998-4 Eurocode 8: Design of structures for earthquake resistance – Part 4: Silos, tanks and pipelines 29 Sep 06 29 Aug 08
BS EN 1998-5 Eurocode 8: Design of structures for earthquake resistance – Part 5: Foundations, retaining structures and geotechnical aspects 8 Apr 05 29 Aug 08
BS EN 1998-6 Eurocode 8: Design of structures for earthquake resistance – Part 6: Towers, masts and chimneys 12 Jan 06 29 Aug 08
BS EN 1999-1-1 Eurocode 9: Design of aluminium structures – Part 1-1: General – Common rules 31 Aug 07 30 Nov 08
BS EN 1999-1-2 Eurocode 9: Design of aluminium structures – Part 1-2: General – Structural fire design 30 Apr 07 31 Jan 09
BS EN 1999-1-3 Eurocode 9: Design of aluminium structures – Part 1-3: Additional rules for structures susceptible to fatigue 31 Aug 07 30 Nov 08
BS EN 1999-1-4 Eurocode 9: Design of aluminium structures – Part 1-4: Supplementary rules for trapezoidal sheeting 30 Apr 07 31 Jan 09
BS EN 1999-1-5 Eurocode 9: Design of aluminium structures – Part 1-5: Supplementary rules for shell structures 30 Apr 07 31 Jan 09