Ringlok – Diagonal Brace

(Lateral Stability Member) - EN10219

Product Overview

SPRING Diagonal Brace is the central lateral stability component in the Ringlok scaffolding system. The component thus provides torsional rigidity and definitely prevents sway or buckling under any horizontal or wind loads, thereby ensuring the overall structural stability. One end of each brace is attached diagonally to the rosette of one standard, and the other end to the rosette of the adjacent standard, using wedge-end connectors that lock securely in the rosette openings.

The Brace is made of S355 structural steel, has forged wedge heads, and is hot-dip galvanized (≥ 85 µm) to meet the formal technical requirements of Aramco GI 8.001, SABIC §9.4, BS EN 12811, and OSHA 1926.451 for stability and safety.

Key Features & Advantages

  • High Torsional Strength: Provides lateral stability up to 35 kN axial resistance.
  • Self-Locking Wedge System: Secures without bolts, reducing assembly time.
  • Adjustable Lengths: Available from 1.0 m to 3.0 m spans for flexible bay geometry.
  • Weather & Corrosion Resistant: Hot-dip galvanized finish for long-term durability.
  • Precision Fabrication: Robotic welding ensures blade alignment and accurate geometry.
  • Universal Compatibility: Fits Standards and Ledgers for all scaffold configurations.

Technical Specifications

  • Material: Carbon Steel S355 (EN 10025)
  • Tube Diameter: 48.3 mm
  • Wall Thickness: 3.2 mm
  • End Connection: Forged Wedge Blade with Pin Hole
  • Surface Finish: Hot-Dip Galvanized (ISO 1461, ≥ 85 µm)
  • Manufacturing: Robotic Welding per ISO 3834-2
  • Rosette Spacing: 500 mm vertical connection intervals

Dimensional Data

Item Code Description Brace Length (mm) Tube OD (mm) Wall Thickness (mm) Weight (kg)
SP-RB-1500 Diagonal Brace 1.5 m 1500 48.3 3.2 5.5
SP-RB-2000 Diagonal Brace 2.0 m 2000 48.3 3.2 6.3
SP-RB-2500 Diagonal Brace 2.5 m 2500 48.3 3.2 7.1
SP-RB-3000 Diagonal Brace 3.0 m 3000 48.3 3.2 8.0

Structural Performance

Parameter Unit Result Reference Standard
Safe Working Load (SWL) – Axial kN 35 BS EN 12811 Annex D
Ultimate Load kN 55 BS EN 12811
Angular Tolerance ° ±2 BS EN 12810-2
Deflection @ SWL mm ≤ 5 BS EN 12811
Safety Factor – 1.5 Aramco GI 8.001
Galvanizing Coating µm ≥ 85 ISO 1461

Braces are type-tested under axial compression, tension, and cyclic fatigue in Arabian ALTRAD SPAR’s QA Lab, validated by TÜV / SGS / Intertek for certification.

Compliance Standards

Standard / Client Clause Description
Aramco GI 8.001 §5.4 Scaffold stability and bracing requirements.
SABIC §9.4 §7.2 Revalidation and re-inspection cycle for bracing members.
BS EN 12810-1 Clause 4 Load resistance and structural stability.
BS EN 12811-1 Annex D Testing methodology for diagonal braces.
OSHA 1926.451 §C Scaffold bracing and wind load requirements.
ISO 3834-2 Clause 8 Welding process QA control.
ISO 1461 Clause 6 Galvanizing coating verification.

Quality Assurance (QA / QC)

Inspection Procedure:

  • Raw material traceability (EN 10219 certified).
  • End forging and dimensional inspection (± 2 mm).
  • Weld inspection (Visual + MT) on 10% random sample.
  • Coating thickness and adhesion testing ≥ 85 µm.
  • Proof load and deflection testing at 35 kN.
  • Final stamping and QA release documentation.

QA/QC Verification Summary

Inspection Stage Method Acceptance Criteria Frequency
Material Verification MTC Review S355 / EN 10219 Each Batch
End Connection Gauge Fit No gap / smooth wedge lock 100 %
Weld Quality Visual + MT No cracks / undercut 10 %
Coating Elcometer Gauge ≥ 85 µm Each Lot
Load Test Hydraulic Frame ≥ 35 kN Axial Quarterly
Marking Visual Batch + Heat No. 100 %

Identification & Traceability

Each Diagonal Brace carries laser engraving:

ALTRAD SPAR| BRACE | LENGTH | BATCH No. | HEAT No. | YEAR
And a unique QR/barcode label linked to ALTRAD SPAR’s ERP quality traceability system.

Applications

  • Lateral and cross-bracing for scaffold bays and towers
  • Stability reinforcement under wind and dynamic loads
  • Vertical and horizontal bracing for birdcage scaffolds
  • Industrial scaffolds in refineries, power plants, and marine yards
  • Temporary works and shoring systems

Maintenance & Inspection

Item Frequency Method
Visual Inspection Before each use Check the wedge, weld, and straightness
Galvanizing Verification Every 3 years Coating ≥ 85 µm
Load Retest Every 5 years ≥ 35 kN proof load
Storage After use Store horizontally with protective padding