Hydraulic Jack with Load Indicator Calibration
(Load Cell & Gauge — ISO 7500-1 / IS 14610)
Hydraulic jack calibration service with Load Indicator is carried out to verify the accuracy of applied load and indicated force values used during field and laboratory testing. Hydraulic jacks with load indicators are widely used in plate load tests, pile load tests, structural loading, and geotechnical investigations, where precise load measurement is critical for safety and design validation.
What is the Hydraulic Jack with Load Indicator Calibration?
Hydraulic Jacks with Load Indicators are the primary load application and measurement system in field load tests — pile vertical load tests (IS 2911), slab load tests, plate load tests (IS 1888) and structural proof load tests. The hydraulic jack applies force; the load indicator (pressure gauge × calibrated area, or bonded strain gauge load cell) measures it. Both systems require regular calibration for accurate load test results.
At Global Lab, hydraulic jack and load indicator calibration per IS 14610 (Method of Testing Hydraulic Jacks) and ISO 7500-1 uses NPL-traceable reference load cells in a calibration frame to apply known loads to the jack and compare against the jack's gauge or load cell display. A jack-specific calibration chart (force vs gauge pressure) is issued — used directly on-site during load testing.
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Hydraulic Jack with Load Indicator Calibration — Site Images
How the Hydraulic Jack with Load Indicator Calibration is Conducted
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1
Surface Preparation
A shallow groove (approx. 25mm deep) is cut into the concrete surface using a diamond-tipped cutting tool. The surface is cleaned of dust and debris. -
2
Insert Disc Placement
A specially designed steel insert disc is placed into the groove. A thin rod connects the disc to the pullout apparatus above the surface. -
3
Hydraulic Pullout Force Application
A hydraulic jack applies a steady, controlled pullout force to the insert disc via the reaction ring resting on the concrete surface. -
4
Failure Load Recording
The maximum force at which the concrete cone is extracted is recorded. A digital load indicator provides real-time readings with data logging. -
5
Strength Calculation & Reporting
The pullout force is correlated to cube compressive strength using established calibration curves. NABL-accredited reports are issued via Autovity QLMS.
Applicable Test Standards
| Standard | Title | Scope | Type |
|---|---|---|---|
| IS 14610 | Method of Testing Hydraulic Jacks | Jack Calibration | Indian Standard |
| ISO 7500-1 | Metallic Materials — Calibration of Static Uniaxial Testing Machines | Force Calibration | ISO |
| IS 2911 | Code of Practice for Design and Construction of Pile Foundations | Pile Load Test | Indian Standard |
| IS 1888 | Method of Load Test on Soils | Plate Load Test | Indian Standard |