| Rigid Portal Frame |
Low-rise industrial and agricultural regions where large, unobstructed floor areas are required |
Warehouses, workshops, distribution buildings, aircraft hangars and agricultural storage |
Approximately 15–60 m for common low-rise configurations |
Efficient combination of columns and rafters with relatively few internal supports |
Frame stiffness, haunch geometry, eave moments, wind uplift, roof drainage and crane loads where applicable |
Suitable for most climates; protective coating and detailing are important in humid, coastal or chemically aggressive areas |
Fast |
Low to medium |
Choose when clear floor space, rapid construction and economical low-rise coverage are the main priorities |
| Braced Steel Frame |
Regions with strong wind or seismic requirements and projects that can accommodate bracing lines |
Industrial buildings, offices, schools, retail structures and multi-storey facilities |
Approximately 6–12 m between typical columns; total building size varies by layout |
Diagonal bracing provides an efficient lateral-load-resisting system and can reduce beam and column demand |
Brace interference with doors, windows and circulation; connection design; drift limits; seismic ductility requirements |
Well suited to high-wind and seismic regions when the bracing system is properly detailed |
Fast |
Low to medium |
Choose when lateral stability and material efficiency are more important than completely open façades |
| Moment-Resisting Frame |
Dense urban regions or buildings requiring open façades and flexible interior layouts |
Office buildings, residential towers, hospitals, hotels and commercial buildings |
Approximately 6–10 m between columns for many conventional floor layouts |
Rigid beam-to-column connections provide lateral resistance without diagonal braces |
More demanding connection fabrication, higher drift sensitivity, welding or bolting quality, and seismic detailing |
Suitable for high-wind and seismic locations when connection ductility and fire resistance are engineered correctly |
Medium |
Medium to high |
Choose when unobstructed façades, open floor plates and architectural flexibility justify more complex connections |
| Composite Steel–Concrete Frame |
Urban and high-density regions where floor stiffness, fire performance and vertical capacity are important |
Multi-storey offices, hospitals, hotels, residential buildings and parking structures |
Approximately 7–15 m floor spans are common, depending on slab and beam system |
Steel beams work with a concrete slab to improve floor capacity and stiffness |
Shear connectors, concrete curing, construction sequencing, differential movement, fire protection and vibration control |
Adaptable to varied climates; moisture control and concrete durability are critical in freeze-thaw or coastal environments |
Medium |
Medium |
Choose when a multi-storey building needs efficient floors, reduced beam depth or enhanced inherent fire resistance |
| Cold-Formed Steel Framing |
Regions with established light-gauge steel fabrication and low- to mid-rise construction markets |
Residential buildings, hotels, schools, partition systems and small commercial projects |
Approximately 3–9 m for typical floor or roof framing members |
Lightweight, repeatable sections with efficient off-site fabrication and reduced handling requirements |
Local buckling, fire and acoustic assemblies, thermal bridging, connection detailing and temporary bracing |
Suitable for dry and humid climates with appropriate galvanizing, membranes and moisture management |
Fast |
Low to medium |
Choose for repetitive low-rise construction where low weight and factory-based production reduce site labor |
| Space-Frame / Truss System |
Regions requiring large column-free roofs, especially where architectural form is a major project driver |
Sports halls, exhibition centers, terminals, assembly buildings and large atriums |
Approximately 20–100 m or more, subject to geometry, loads and support conditions |
Three-dimensional load distribution enables long spans with relatively shallow structural depth |
Node and connection tolerances, transportation, erection sequence, vibration, roof drainage and maintenance access |
Effective in snow, wind and seismic regions only after three-dimensional analysis and code-based detailing |
Medium |
Medium to high |
Choose when long-span coverage and a lightweight architectural roof are more valuable than the simplest erection process |
| Modular Steel Volumetric Frame |
Regions facing skilled-labor shortages, tight construction schedules or repeatable building demand |
Worker accommodation, student housing, hotels, healthcare units and temporary or relocatable facilities |
Typically module widths of about 2.5–4.0 m; combined building spans depend on module arrangement |
High off-site completion rate can reduce site activities and improve schedule predictability |
Transport envelope, lifting points, module-to-module connections, fire separation, services coordination and tolerances |
Can be adapted to cold, hot, humid or seismic regions through suitable envelope and connection design |
Very fast on site |
Medium |
Choose when repetition, controlled factory production and reduced on-site duration outweigh transport constraints |
| Steel Tube / Mega-Frame System |
High-rise urban regions where wind control, column-free perimeter zones or iconic façades are required |
High-rise offices, mixed-use towers, observation structures and major civic buildings |
Multi-storey and long-span applications; capacity is project-specific rather than governed by a simple span range |
Perimeter columns, deep beams and belt or outrigger systems can improve overall building stiffness |
Wind-induced acceleration, fabrication logistics, erection stability, connection congestion, fire protection and inspection access |
Suitable for typhoon, hurricane and seismic regions when wind-tunnel or advanced dynamic assessment is required |
Medium to slow |
High |
Choose for tall or architecturally complex buildings where stiffness, façade openness and structural expression are central goals |