INDUSTRY COMPONENT

Web

The vertical central web plate in an I-beam that connects the flanges and provides shear resistance.

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Component Specifications

Definition
The web is the central vertical plate element of a structural steel I-beam that connects the top and bottom flanges. It primarily resists shear forces and contributes to the beam's overall bending stiffness. The web's height-to-thickness ratio is critical for preventing buckling under load, and it often contains stiffeners or holes for utilities in construction applications.
Working Principle
The web functions as the shear-resisting element in an I-beam, transferring vertical loads between the flanges while maintaining the beam's geometric integrity. It works in conjunction with the flanges to create an efficient load-bearing structure where the web handles shear stress and the flanges handle bending moments.
Materials
Typically ASTM A36, A572 Grade 50, or similar structural steel with yield strength ranging from 36, 000 to 50, 000 psi. Material thickness varies from 1/4 inch to over 1 inch depending on beam size and load requirements.
Technical Parameters
  • web_height Varies by beam size (typically 4-36 inches)
  • web_thickness 0.25-1.25 inches
  • shear_capacity Calculated based on web area and material properties
  • yield_strength 36,000-50,000 psi
Standards
ASTM A6, AISC 360, EN 10025

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Web.

I-beam web structural steel web beam web plate shear web steel beam component construction web structural engineering Web Web in Basic Metal Manufacturing

Parent Products

This component is used in the following industrial products

Structural Steel I-Beam

Hot-rolled structural steel beam with I-shaped cross-section for load-bearing frameworks.

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Structural Steel Channel Section

Hot-rolled steel channel sections for structural frameworks and support systems.

View Product Details

Bridge Beam

A primary horizontal structural member that carries vertical loads and transfers them to bridge supports.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Web buckling under compressive loads
  • Shear failure from excessive loading
  • Corrosion in exposed environments
  • Fatigue cracking at connection points
FMEA Triads
Trigger: Inadequate web thickness for applied loads
Failure: Web buckling or shear failure
Mitigation: Proper sizing per AISC specifications, adding stiffeners, using higher strength steel
Trigger: Poor welding at web-to-flange connections
Failure: Crack propagation and structural failure
Mitigation: Qualified welding procedures, proper inspection, stress relief treatments

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±1/8 inch for web height, ±0.010 inch for thickness per ASTM A6
Test Method
Ultrasonic testing for thickness verification, visual inspection for straightness, material certification for properties

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the primary function of the web in an I-beam?

The web primarily resists shear forces and connects the top and bottom flanges, transferring loads between them while preventing buckling through its vertical plate structure.

How is web thickness determined in I-beam design?

Web thickness is determined by required shear capacity, buckling resistance, and connection requirements, following AISC specifications and considering load factors, beam span, and material properties.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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