Engineering Terminology

Steel Engineering & Export Glossary

Key structural engineering, Eurocode design, cold-formed steel, and international trade terminology explained for contractors, developers, and architects.

• BIM (Building Information Modelling)

A 3D digital representation of physical and functional characteristics of a facility, utilized for clash detection and automated CNC machine output.

• Clear Span

The unobstructed interior horizontal distance between structural columns or walls without intermediate load-bearing supports.

• Cold-Formed Steel (CFS / LGSF)

Structural steel products shaped at ambient temperature by roll-forming thin sheets of galvanized steel through a series of dies.

• Declaration of Performance (DoP)

A key legal document under EU CPR 305/2011 stating the essential performance characteristics of a CE-marked construction product.

• Eave Height

The vertical distance measured from finished ground slab level to the top of the eave purlin or intersection of the roof plane and exterior wall.

• EN 1090-2

European standard defining technical execution requirements for steel structures, establishing Execution Classes (EXC1 to EXC4).

• Eurocode 3 (EN 1993)

The unified European structural standard governing the calculation and design of steel structures, including cold-formed and hot-rolled members.

• Flat-Pack Kit

A prefabricated steel framing system bundled in knocked-down component packages optimized for dense container shipping and manual/light mechanical handling.

• Hot-Dip Galvanizing (HDG)

The process of coating fabricated steel by immersing it in a bath of molten zinc (per ISO 1461) to provide sacrificial cathodic corrosion protection.

• Incoterms

Standardized international commercial terms published by the ICC (e.g. EXW, FOB, CIF, DAP) defining cost allocation and risk transfer between buyer and seller.

• Mill Test Certificate (MTC 3.1)

A certified document issued by the primary steel mill per EN 10204 verifying the exact chemical analysis and mechanical test properties of a specific steel heat batch.

• Portal Frame

A two-dimensional rigid structural steel frame consisting of columns and rafter beams connected by moment-resisting haunch joints.

• Purlin (Z / C / Sigma)

Secondary cold-formed structural horizontal members spanning across primary rafters or trusses to support roof or wall cladding sheets.

• REI Fire Rating

European fire resistance classification measuring Load-bearing capacity (R), Integrity against flames/gases (E), and Thermal Insulation (I) in minutes.

• Sandwich Panel

A composite prefabricated cladding panel consisting of an insulating foam core (PIR/PUR or mineral wool) bonded between two pre-painted galvanized steel face sheets.

• Serviceability Limit State (SLS)

Design criteria concerning deflection, vibration, and crack widths under normal operating loads to ensure building function and comfort.

• Thermal Break

An element of low thermal conductivity placed in an assembly to reduce or prevent the flow of thermal energy between conductive steel surfaces.

• Ultimate Limit State (ULS)

Structural design criteria concerning structural safety, yielding, buckling, and resistance against collapse under maximum factored load combinations.

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