---
title: "Screed Beam"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:SCREED_BEAM"
  data_integrity_hash: "46b84d5836245d436c8c39dcca33aeec"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:SCREED_BEAM"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/screed-beam.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/screed-beam"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0.5-3.0 MPa compressive stress, 0.1-0.5 MPa bending stress, 20-80°C temperature"
    unit: "mm"
engineering_limits:
  max_safe_operating_point:
    value: 345
    unit: "MPa"
    consequence: "Plastic deformation due to von Mises stress exceeding yield strength (σ_vM = √(σ_x² + σ_y² - σ_xσ_y + 3τ_xy²) &gt; σ_y), Euler-Bernoulli beam theory violation (EI(d⁴w/dx⁴) &gt; distributed load q), thermal expansion mismatch (αΔT &gt; 0.002 strain for steel-concrete interface)"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Concrete segregation causing localized density variations of 400-600 kg/m³ difference"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Tuned mass damper system with 2% critical damping ratio, real-time density monitoring with gamma-ray backscatter sensors"
  - node_2:
      trigger: "Abrasive aggregate wear (Mohs hardness &gt; 6) at sliding velocity &gt; 0.3 m/s"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Hard-faced tungsten carbide coating (HV 1400), sacrificial wear plates with 12 mm replaceable thickness"
bom_nodes:
  wear-plate:
    type: "component"
    urn: "URN:CNFX:ME:WEAR_PLATE"
    interface_type: "physical-logic-coupled"
  vibration-mechanism-housing:
    type: "component"
    urn: "URN:CNFX:ME:VIBRATION_MECHANISM_HOUSING"
    interface_type: "physical-logic-coupled"
  end-capconnector:
    type: "component"
    urn: "URN:CNFX:ME:END_CAPCONNECTOR"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "EN 13813:2002 - SCREED MATERIAL AND FLOOR SCREEDS - SCREED MATERIAL - PROPERTIES AND REQUIREMENTS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/screed-beam.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "9f23f23f810f3b8d2f5fc4dbe2609d994f3f3e5fb9a8b9c80499912b5a4ee24d"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Screed Beam

## 1. Technical Definition
The structural component of a concrete screed machine that levels and compacts freshly poured concrete.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0.5-3.0 MPa compressive stress, 0.1-0.5 MPa bending stress, 20-80°C temperature**. Failure boundary: **Yield strength exceedance at 345 MPa (ASTM A36 steel) or 250 MPa (structural aluminum), deflection &gt; L/360 (beam length/360), temperature &gt; 150°C (material degradation threshold)**, Mechanism: **Plastic deformation due to von Mises stress exceeding yield strength (σ_vM = √(σ_x² + σ_y² - σ_xσ_y + 3τ_xy²) &gt; σ_y), Euler-Bernoulli beam theory violation (EI(d⁴w/dx⁴) &gt; distributed load q), thermal expansion mismatch (αΔT &gt; 0.002 strain for steel-concrete interface)**.

### 2.1 Analytical Physics Model
Governed by the **Frame Structural Deflection Analysis**:

> **Primary Equation**: $\delta = \frac{5 q L^4}{384 E I}$  
> **Engineering Impact**: Ensures structural stability for multi-stage machines.

| Symbol | Variable Definition | Localized Reference |
| :--- | :--- | :--- |
| q | Uniform Load | Engineering Constant |
| E | Elastic Modulus | Engineering Constant |
| I | Moment of Inertia | Engineering Constant |

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Concrete segregation causing localized density variations of 400-600 kg/m³ difference | 8 | Resonant vibration at 15-25 Hz matching beam natural frequency, amplitude &gt; 5 mm | Tuned mass damper system with 2% critical damping ratio, real-time density monitoring with gamma-ray backscatter sensors |
| Abrasive aggregate wear (Mohs hardness &gt; 6) at sliding velocity &gt; 0.3 m/s | 8 | Surface material loss exceeding 0.5 mm thickness, coefficient of friction increase from 0.15 to &gt;0.35 | Hard-faced tungsten carbide coating (HV 1400), sacrificial wear plates with 12 mm replaceable thickness |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | mm | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Concrete Mixer Truck**, **Concrete Pump**, **Vibratory Plate Compactor**  
**Downstream Applications**: Concrete Slabs, Concrete Floors, Road Pavements  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What materials are used in manufacturing screed beams?
**A**: Our screed beams are constructed from high-strength steel and aluminum alloy for optimal durability and performance in concrete leveling applications.

### Q: What are the main components of a screed beam assembly?
**A**: Key components include end caps/connectors, vibration mechanism housing, and wear plates that work together to level and compact concrete effectively.

### Q: How does the vibration mechanism in a screed beam work?
**A**: The vibration mechanism housing contains components that generate controlled vibrations to help settle and compact freshly poured concrete during the leveling process.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- EN 13813:2002 - SCREED MATERIAL AND FLOOR SCREEDS - SCREED MATERIAL - PROPERTIES AND REQUIREMENTS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Screed Beam](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/screed-beam)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: SCREED_BEAM | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 2b70c6d1
