Longspan Shelving System: Engineering Analysis, Sizing & Global Procurement

Uniformly Distributed Load (UDL) assumes that product weight is spread completely evenly across the entire surface length and depth of the beam pair. Concentrating weight in the geometric center of the shelf increases the maximum bending moment exponentially, reducing structural capacity by as much as 50%.

Under SEMA and FEM 10.2.02 codes, the maximum allowable vertical deflection of a longspan beam under full design load must not exceed L/200 (Span length divided by 200). For example, a 2,000mm beam under full load must not deflect more than 10mm.

While High-Density Fibreboard (HDF) or chipboard is an economical choice for general e-commerce and dry garment storage, galvanized steel decking or wire mesh is mandatory under the following conditions:

• Fire Safety Codes: Facilities governed by strict insurance regulations (e.g., FM Global, NFPA 13) requiring open area ratios for overhead sprinkler water penetration.
• Chemical & Petroleum Products: Facilities holding drums, lubricants, or solvents that will soften or degrade resin-bonded particleboard over time.
• High Humidity / Cold Rooms: Non-conditioned tropical facilities or refrigerated storage where timber decking absorbs moisture, sags, or supports fungal spores.

A standard single-tier longspan frame cannot simply have an overhead catwalk attached later unless the upright profiles, base footplates, and floor slab anchoring were pre-engineered for cumulative axial loads. A multi-tier conversion requires heavy-gauge upright posts designed to handle the dynamic dead and live weight of human foot traffic, pallet trucks, and catwalk decking.

If vertical expansion is envisioned within a 3–5 year roadmap, My Interack recommends specifying our 2000 Series or 8000 Series Heavy Frames from day one with structural top connectors ready for modular mezzanine expansion.

To furnish an accurate structural drawing and formal quotation within 24–48 hours, our engineering department requests:

• Architectural floor plan (AutoCAD .DWG format preferred) showing building columns, clear internal heights under trusses, exit doors, and fire sprinkler main lines.
• Concrete slab specification: Slab thickness and design compressive strength (e.g., 150mm thick, 25MPa).
• Stored goods physical profile: Maximum Length × Width × Height and gross weight per carton or storage tote.
• Replenishment workflow: Manual walk-in picking, roll containers, or order picking trolleys (dictates minimum clear aisle width between 900mm and 1500mm).

My Interack manufactures all storage racking systems in compliance with internationally recognized structural design guidelines, including:

• FEM 10.2.02 / EN 15512: European Racking Design Codes for steel static storage systems.
• SEMA: Storage Equipment Manufacturers’ Association (UK) codes of practice for rack safety and structural design.
• ISO 9001:2015: Quality Management System covering cold-forming tolerances, certified steel mill sourcing, and weld penetrations.
• Load Signage Compliance: Formal safe working load signs supplied and installed on all bay configurations for audit compliance.

Yes. In addition to delivering extensive projects throughout Malaysia, we routinely export and execute racking installations in Singapore and across Southeast Asian markets. We handle export container consolidation, seaworthy export timber crating, transit documentation, and dispatch experienced installation teams to ensure on-time commissioning.