Glossary of industrialized construction: essential terms

PEB Corp compiled this glossary of key industrialized-construction terms for business owners, engineers, contractors, and developers working with prefabricated and modular building systems. The definitions cover pre-engineered buildings (PEB), light-gauge steel (LGS) framing, the BIM-to-CNC workflow, regional codes, and project management. The PEB Corp Group counts 350+ projects in Panama, Colombia, and the Caribbean, executed by SmartBrix Construction. This glossary aims to give every project stakeholder a shared vocabulary.

Material specifications — 0.85–2.5 mm thicknesses, Zn-Al-Mg 275 g/m² coating (ZM275) and ±0.5 mm tolerance — are published by the group's manufacturer on the NewCon Steel® LGS/CFS profiles page; codes and reference prices for this market are on our Panama page.

Foundational terms

PEB (Pre-Engineered Building): A structural steel building whose components (columns, beams, purlins, bracing, connections) are designed, fabricated, and delivered as an integrated system ready for on-site assembly. Typical applications: industrial warehouses, logistics facilities, agro-industrial structures. Key difference from traditional construction: ±0.5 mm (±0.02 in) precision, a schedule defined during engineering, predictable cost.

LGS (Light Gauge Steel) / Steel Framing: Structural system using cold-formed steel profiles (no welding) at 0.85–2.5 mm (0.033–0.098 in) thickness. Used in multifamily residential, schools, clinics. More economical than heavy PEB but with lower concentrated load capacity. Fastened with self-drilling screws (TEK fasteners) or structural rivets.

BIM (Building Information Modeling): Parametric 3D design methodology where each building element (column, beam, connection) contains geometric and material data. Facilitates MEP (mechanical, electrical, plumbing) coordination, auto-generates construction drawings, creates CNC cutting lists, detects conflicts before fabrication begins.

CNC (Computer Numerical Control): Computer-controlled cutting, forming, and drilling machinery. In industrialized construction, used to cut profiles to tolerance (±0.5 mm / ±0.02 in), drill connection holes, engrave assembly codes. Delivers tight tolerances and repeatability across thousands of identical pieces.

Material and coating systems

Zn-Al-Mg 275 g/m² (zinc-aluminum-magnesium, ZM275 to EN 10346 / ZMM275 to ASTM A1046): Anti-corrosion coating alloy applied via continuous galvanizing process. Composition: zinc with aluminum and magnesium additions; the exact proportions depend on the product and the standard (EN 10346 / ASTM A1046). Advantage over conventional galvanizing (pure zinc): higher marine corrosion resistance and reduced maintenance in tropical environments. PEB Corp standard specification: 275 g/m² total across both faces (≈20 µm per face).

EIFS (External Insulation Finish System): Exterior insulation assembly composed of 75–150 mm (3–6 in) expanded polystyrene (EPS), reinforcement mesh, acrylic primer, and finish coat. Thermal resistance depends on EPS thickness: about RSI 2–4 m²·K/W (R-11 to R-23 in US units) for 75–150 mm (3–6 in). Used in tropical climates to reduce interior heat gain.

Standard Galvanizing: Pure zinc coating applied by immersion in molten zinc. In coastal tropical environments it is consumed faster than Zn-Al-Mg 275 g/m². Less costly than Zn-Al-Mg 275 g/m² but inferior durability in coastal zones with extreme humidity and salinity.

Standards and certification

Structural Design Code for the Republic of Panama (REP-2021): Current seismic and structural standard in Panama. Establishes load factors, design spectral acceleration by location, and modal spectral analysis methods. Mandatory for new structures. PEB Corp designs its Panama projects to REP-2021.

NSR-10 (Colombian Seismic Standard, 2010): Colombian equivalent of REP-2021. Defines spectral acceleration by municipality. Includes ductility factors, damping coefficients, and time-history analysis methods. Applicable in Colombia and some Caribbean zones adopting Colombian standards.

IBC / ASCE 7: International Building Code and American Society of Civil Engineers Standard 7. Used in the Caribbean (Trinidad, Barbados, Jamaica) as reference codes when local legislation is not prescriptive. Define hurricane wind loads, seismic requirements, safety factors.

ISO 9001/14001/45001/37001: Quality management, environmental, occupational health & safety, and anti-corruption systems respectively. The PEB Corp Group maintains current certification in all four standards. These PEB Corp Group certifications support process consistency, material traceability, and personnel training.

AISC (American Institute of Steel Construction) / AISI (American Iron and Steel Institute): Organizations publishing steel design standards. AISC 360 for heavy structural steel (PEB). AISI S100 for cold-formed steel (LGS). Both referenced in regional codes REP-2021 and NSR-10.

Engineering and fabrication processes

Shop Drawings: Detailed fabrication drawings generated post-design, showing each component with final dimensions, material specifications, assembly sequence, identification codes. Delivered to client for approval before fabrication begins. Post-approval changes incur additional costs.

Detail Engineering / Detailing: Engineering phase where connections, joints, and welds (if applicable) are designed with maximum detail. Includes calculations of bearing stress, shear stress, bending moment at each connection.

Nesting (Layout Optimization): Process of optimal profile arrangement on steel sheets to minimize scrap. CNC algorithm calculates multiple cuts on one sheet, reducing waste versus manual cutting. Saves material and cost.

Tolerance / Tolerancing: Specification of acceptable dimensional variation range. Industrialized construction typically ±0.5 mm (±0.02 in) CNC, versus the much wider tolerances of traditional construction. Tight tolerances require investment in precision machinery but result in rapid assembly and less rework.

Assembly (Erection): Process of assembling prefabricated components on-site. In PEB, the structure erection reference is 380 m²/day (4,090 ft²/day) per crew; it is not the total building schedule (foundations, roof and cladding are added). Requires specialized crews, mobile crane, prior topographic layout.

Structural support equipment

Bridge Crane: Fixed lifting equipment installed in industrial building roof, horizontally and vertically mobile. Capacity 1–50 metric tons. Used in manufacturing, warehousing. Steel structure must be designed with specific anchor points to support concentrated crane loads (lateral bracing, local reinforcement).

Column: Vertical member supporting gravitational loads (roof, floor, equipment weight) and lateral loads (wind, seismic). PEB typically uses H or IPE profiles 10+ mm (0.4+ in) thickness. LGS uses C-profiles 0.85–2.5 mm (0.033–0.098 in). Design critical for overall structure stability.

Beam: Horizontal member spanning between supports (columns), carrying distributed roof or floor load. PEB: IPE 270–600 (10.6–23.6 in). LGS: G-profiles 300–500 mm (12–20 in) height. Dimensioned per AISI S100 for deflection limits (L/240 typical).

Purlin: Secondary member spanning between main beams, distributing roof/floor loads to main beams. Typical spacing 1.2–1.5 m (4–5 ft). PEB: Z or C 150–250 mm (6–10 in). Design critical in wind/seismic zones (ASCE 7 specifies pressure/suction loads).

Foundations and subsurface

Foundation: Buried structure (footings, pads, piles) transferring superstructure loads to soil. Design requires geotechnical investigation (SPT, CPT) to determine soil bearing capacity. Typical depth in Panama: 1.2–1.8 m (4–6 ft) for footings, 6–10 m (20–33 ft) for piles in weak soil.

Pile: Deep foundation element (typically reinforced concrete, 400×400 mm / 16×16 in, length 6–15 m / 20–50 ft) driven into soil to reach competent stratum. Used when shallow soil has low bearing capacity or water table is high. More expensive than footings but ensures stability in complex soils.

Base Plate: Steel plate welded to column base, with anchor bolt holes. Distributes concentrated column load over footing/pile. Typical dimensions 250×250 mm to 600×600 mm (10×10 in to 24×24 in) depending on load. Material: structural steel A36 or similar, thickness 10–25 mm (0.4–1 in).

Connections and fasteners

Bolted Connection: Mechanical joint using high-strength bolts (grade 8.8 typical) with nuts and washers. Advantage over welding: no heat, no distortion, reversible. Inspection: torque wrench verifies initial and periodic tension (biennial check). Standard in modular expansions.

Welding: Permanent joint of steel components via heat fusion. Requires a qualified welder and strict quality control. In the group's industrialized construction, field connections are bolted, with no on-site welding. Advantage: monolithic connection. Disadvantage: cost, time, thermal distortion risk.

Bracing / Arriostramiento: Diagonal member increasing lateral rigidity (wind/seismic resistance). Configuration: X, V, or single diagonal. In seismic design, eccentric or concentric bracing determines if structure is ductile or rigid. Critical in REP-2021/NSR-10 analysis.

EMMA (Empresas Multinacionales para la prestación de servicios relacionados con la Manufactura): Panama's special regime for multinational manufacturing-services companies, created by Law 159 of 2020. The group's CNC plant (NewCon Steel®) at Centro Industrial PEB, Las Mañanitas, operates under this regime, which allows duty-free import of machinery, raw material and inputs. Not a free trade zone.

Exterior systems

Roof: Upper closure system composed of structure (beams/purlins), primary cover (galvanized metal or insulated EIFS), drainage (gutters/downspouts), waterproofing. Typical slope 15–20° for drainage. Insulation thickness varies: 0 mm (basic, no thermal control) to 150 mm (6 in) (EIFS, maximum thermal control).

Facade: Vertical closure system (walls). Options: corrugated metal (simple, economical), sandwich panels (integrated insulation), masonry with steel frame (traditional). Typical thickness 80–200 mm (3–8 in) if insulation included. Waterproofing: caulk, membranes, or controlled drainage systems.

Roll-Up Door: Motorized loading door with aluminum or steel slats, button or photocell operation. Speed: 0.3–0.4 m/s (1–1.3 ft/s). Standard sizes: 3.5m×4m (11.5×13 ft) (mixed access), 4.5m×4.5m (14.8×14.8 ft) (dual operation), 6m×5.5m (19.7×18 ft) (heavy). Cost per unit depends on automation and controls.

Project operations and logistics

Free trade zone / special regime: Geographic area (e.g., Colón Free Zone, Panama) with special customs and tax regulations. The group's CNC plant is not inside a free zone: it operates at Centro Industrial PEB, Las Mañanitas, under Panama's EMMA regime (Law 159 of 2020). Relevance to construction: projects in the CFZ usually demand very short schedules, and PEB modularity fits that pace.

Industrial Warehouse: Large-scale building (1,000–10,000 m² / 10,764–107,640 ft²) for manufacturing, storage, logistics. Characterized by: wide column spacing (6–12 m / 20–40 ft), long beams, clear heights 6–10+ m (20–33+ ft), distributed loads 300–2,000 kg/m² (60–410 psf), modular tolerances. Optimal for PEB system.

Warehouse / Bodega: Storage structure, typically 500–5,000 m² (5,382–53,820 ft²), level floors, multiple accesses (2–4 roll-up doors), racking systems for vertical storage. Requires high-strength concrete floor (28-day cure minimum before loading). Standard PEB application.

Mezzanine: Secondary platform within existing building, 3–4 m (10–13 ft) height, for offices, vertical storage, or special areas. Structure independent or integrated to existing columns (requires load analysis). Reduces horizontal footprint, optimizes cubic volume.

Final specifications and code references

REP-2021, NSR-10, IBC/ASCE 7: See Codes section above. Summary: REP-2021 (Panama), NSR-10 (Colombia) are mandatory in respective jurisdictions. IBC/ASCE (Caribbean) used as reference when local code absent. PEB Corp designs to most restrictive of applicable standards.

ISO 45001 (Occupational Safety): Safety management system standard. A PEB Corp Group certification; applies on construction sites: PPE use (hard hats, harnesses, gloves), perimeter protection, hazard training, periodic audits. Typical contract requirement for industrial projects in Panama/Colombia.

ISO 14001 (Environmental Management): Environmental management system standard. A PEB Corp Group certification; applies in facility (scrap recycling, lubricant disposal, waste management) and on-site (construction waste handling, runoff protection).