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Rack Static Calculation Analysis
Static calculation analysis for warehouse racking: capacity by measurement and calculation, seismic-impact assessment and approved capacity reports.
Rack static calculation analysis determines the real load capacity and safety margin of existing warehouse racking through measurement, counting and engineering calculation. There is often a gap between the label capacity and the actual field load: a rack system is a structural whole of frames, beams, connections and the floor, and none of the members works independently. The analysis quantifies whether the system operates within its safety limit under the intended loads per TS EN 15512 (steel racks — design) rules, including seismic conditions.
When Is It Needed?
- Capacity change: Moving to heavier or different size pallets, changing level height or depth, rearranging the rack layout.
- Structural uncertainty: Systems without project-license files, second-hand relocated or unknown-brand frames cannot be trusted beyond the label.
- After damage: Re-evaluating the carrier system by calculation after a struck upright-beam; the repair-replace decision on "critical" members in periodic control.
- Seismic and new legislation: Questioning rack anchor-bracket compliance with current seismic design (TDY 2018, FEM 10.2.08); pre-verification for new builds and growth.
Analysis Steps
First the field survey: geometry, openings, column spacing, level elevations, anchors and bracket types; inventory of steel thicknesses and material certificates. Then load modelling: pallet weight and distribution, dynamic factors (forklift impact), stacking height, seismic acceleration combinations. On the calculation side, frame-beam-diaphragm connection details are modelled; buckling, second-order effects and connection capacity are checked. The output is the utilization table of column compression-buckling, beam deflection-shear, bracket load and anchor pull-out capacity. Thickness-corrosion measurement on critical members also serves as input. The report is signed by the authorised engineer and delivered with the permitted maximum load table and capacity label proposal.
Legislation and Outcome
The analysis fills the gap between the Work Equipment Regulation, the Law No. 6331 work equipment duties and rack periodic control (TS EN 15635); design standard TS EN 15512, tolerance TS EN 15620, project TS EN 15629 and the seismic side FEM 10.2.08 / TDY 2018 approaches. The output serves as evidence in insurance-audit files and capacity increase demands alike. Rack static analysis is a standalone service in our Tests and Analyses heading; plan it together with our Industrial Racks periodic audit programme, or contact us for survey and quotation. The calculation shows the utilization ratio at each frame-beam-bracket-anchor link, so the weak member is clear and it is decided by data whether strengthening or replacement is economic; seismic combinations are refreshed with the site ground acceleration and fill factor.
FAQ on Rack Static Calculation Analysis
It is the re-modelling of the upright-beam-anchor-bracing members of an existing pallet rack with measured geometry-material-steel thickness, connection details and real load scenarios, and the verification of load safety with FEM (finite element) plus TS EN 15512 calculation rules. Capacity increase-storage-product change, relocation-rebuild, seismic code update, post-damage or suspected capacity label are the typical triggers.
Field measurement: upright profile-web thickness (caliper)-plumb, beam-hook fit, anchor-nut-floor concrete, bracing system, floor loads-cracks; floor concrete compression strength-slab quality. Where material records are missing, on-site sample test; load combination: service-maximum-seismic-abnormal; with the TS EN 15512-FEM 10.2.02 approach and safety factors. Output: the permitted load table (per floor-upright-frame), where needed a strengthening-change suggestion and a refreshed load plate (SWL) design.
TS EN 15635 brings the duty of a readable load plate per rack: frame load-bay capacity-breakup-distributed-unit maximum. The static analysis output is the engineering ground of this plate; a wrong-aged-fictional label means the operator cannot know the safe limit and overloading risk rises. After analysis: rack label renewal, WMS storage-rule binding (rack-code capacity match duty) and entry into the periodic audit (rack inspection) comparison baseline.
The process: survey-measurement-project reading (if any) to material-geometry verification to load scenario definition (stored-safety factor-seismic) to FEM-check-calculation to result-evaluation-strengthening-repair suggestion to SWL label renewal to management approval. The report carries calculation basis-limit state-combination-table-section-control note; the seismic acceleration-zone parameter (TBDY 2018) assumption is noted. Application follow-up joins the annual audit (TS EN 15635); high stacking does not continue before the report-application gap closes. The record enters the OHS-insurance file.