Test Method Statements
Plate Load Test
Field test to estimate the bearing capacity and settlement of soil at foundation level.
Reference standards: ASTM D1194 / IS 1888
Equipment
- 300–750 mm steel plate
- Hydraulic jack & pressure gauge
- Reaction load (kentledge)
- Dial gauges (0.01 mm)
Procedure
- Excavate to foundation level; pit width at least 5 × plate width.
- Seat the plate on a thin sand layer and set the jack and dial gauges.
- Apply a seating load and zero the gauges.
- Apply load in equal increments (≈ 1/5 of expected capacity), holding until settlement stabilises.
- Continue to failure or 25 mm settlement; record load–settlement data and plot.
Acceptance criteria
- Allowable bearing pressure from the curve with factor of safety (typically 2.5–3) and settlement limits.
Health & safety
- Wear PPE: helmet, safety shoes, gloves and eye protection.
- Keep clear of the kentledge during loading.
FAQs
What is the Plate Load Test used for?
Field test to estimate the bearing capacity and settlement of soil at foundation level.
Which standard does it follow?
It is based on ASTM D1194 / IS 1888. Always follow your project specification where it differs.
Can I print or submit this?
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