Foundation/Base Plate: Thickness 20-50 mm

Component Specifications

Definition

A structural steel plate component that serves as the primary load-bearing interface between a jib crane's vertical column and the concrete foundation. It distributes operational loads (vertical, horizontal, and moment forces) from the crane structure to the foundation while providing precise alignment and anchorage points for the column base.

Working Principle

The foundation plate functions as a rigid load transfer mechanism that converts concentrated crane loads into distributed foundation pressures. It provides a flat, level mounting surface for the jib crane column while incorporating anchor bolt holes for secure attachment. The plate's thickness and dimensions are calculated to prevent bending under maximum crane loads and to maintain structural integrity throughout the crane's operational life.

Materials

ASTM A36 structural steel plate or equivalent, typically with minimum yield strength of 250 MPa and tensile strength of 400-550 MPa. Surface may be hot-dip galvanized or painted with corrosion-resistant coatings for environmental protection.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Thickness	20-50 mm
Dimensions	Custom based on crane capacity (typically 600x600 mm to 1200x1200 mm)
Load Capacity	Designed for 1.5x maximum crane load
Surface Finish	Mill scale removed, blasted to Sa 2.5
Anchor Bolt Holes	4-8 holes with 25-36 mm diameter
Flatness Tolerance	±1.5 mm over entire surface

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 12488-1, DIN 15018, ISO 4301-1, DIN 4114

Parent Products

This component is used in the following industrial products

Jib Crane

A lifting device consisting of a horizontal jib or boom that is attached to a wall or floor-mounted pillar, used for lifting and moving loads within a limited circular area.

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Engineering Analysis

Risks & Mitigation

Improper alignment causing column stress
Inadequate grouting leading to uneven load distribution
Corrosion in harsh environments
Anchor bolt failure under dynamic loads
Foundation cracking from excessive bearing pressure

FMEA Triads

Trigger: Insufficient plate thickness
Failure: Plate bending or permanent deformation under load
Mitigation: Calculate required thickness based on maximum moment and shear forces with appropriate safety factors

Trigger: Poor surface preparation
Failure: Reduced bond strength between plate and grout/concrete
Mitigation: Implement proper surface cleaning, blasting, and priming procedures before installation

Trigger: Incorrect anchor bolt placement
Failure: Bolt shear or pull-out failure during crane operation
Mitigation: Use precision templates during foundation construction and verify bolt positions before concrete placement

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Plate flatness: ±1.5 mm, Hole position: ±2 mm, Plate dimensions: ±3 mm

Test Method

Visual inspection, dimensional verification, non-destructive testing (magnetic particle or dye penetrant), load testing with strain gauges

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Foundation/Base Plate

Manufacturer profiles associated with Foundation/Base Plate.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the purpose of grouting under a jib crane foundation plate?

Grout fills the gap between the foundation plate and concrete foundation, ensuring full bearing contact and preventing stress concentrations. It provides uniform load transfer and compensates for minor surface irregularities.

How are anchor bolts sized for jib crane foundation plates?

Anchor bolts are sized based on maximum uplift and shear forces, with typical diameters of 25-36 mm. They must extend sufficiently into the concrete foundation (minimum 12x bolt diameter) and include proper embedment and edge distance per structural calculations.

Can foundation plates be reused when relocating a jib crane?

Foundation plates are generally not reusable due to potential deformation from previous loading and difficulty in removing embedded anchor bolts. New plates are recommended for crane relocations to ensure structural integrity.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Foundation/Base Plate