Field CBR Equipment
Product Code : LSK-SM-10648
Field CBR Equipment (SKU LSK-SM-10648) measures the bearing capacity of soil in place by pushing a 50 mm penetration piston into the ground and recording load against penetration, the field form of the California Bearing Ratio test. Highway engineering courses, polytechnics and TVET road construction programmes use it for site exercises. The complete field set reaches training institutes, colleges, tender contractors and distributors through Science Lab Supplies, which quotes it from Ambala, India.
Specifications
Every component of the in-situ CBR set has its own row below. In short, the 8.5 kg, 50 kN jack works with proving rings of 10, 28 and 50 kN, steel-tube rods space the ring from the piston, and slotted or circular surcharge weights load the surface around it.
| Specification | Value |
|---|---|
| SKU | LSK-SM-10648 |
| Field CBR jack capacity | 50 kN |
| Jack weight | 8.5 kg |
| Jack total height | 254 mm |
| Proving ring 1 | 10 kN capacity |
| Proving ring 2 | 28 kN capacity |
| Proving ring 3 | 50 kN capacity |
| Penetration piston | 50 mm diameter, threaded at the upper end |
| Slotted surcharge weight | 4.54 kg, 215–250 mm diameter, 53 mm slot |
| Slotted surcharge weight | 9.07 kg, 215–250 mm diameter, 53 mm slot |
| Circular surcharge weight | 4.54 kg, 250 mm diameter, 53 mm central hole |
| Extension rods | Machined from steel tubing; used as spacers between proving ring and piston |
| Extension rod lengths | 2 x 5 cm, 2 x 10 cm, 1 x 30 cm, 1 x 50 cm, 1 x 100 cm |
| Ball seating attachment | 1 |
| Bracket and adapter | 1 |
| Penetration dial indicator | 1 |
| Bridge support | 1, 2 m length |
| Dial gauge support | Seamless pipe, 30 cm high, 45 cm wide at the base |
| Support clamp | Quick-release screw clamp, slides and locks anywhere along the bridge |
| Optional accessory | Dial gauge 0.01 mm x 25 mm |
| Use | Measuring soil bearing capacity |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Field CBR Equipment
The equipment gives an in-situ CBR value for subgrade and sub-base layers, used to check compaction and to design flexible pavement thickness. Students can compare the field result with laboratory CBR on the same soil, a standard exercise in highway engineering and road construction training.
- B.E./B.Tech civil engineering: highway engineering practical on in-situ CBR of subgrade, with the soil first described using the Geotechnical Gauge card.
- Diploma civil engineering: field testing of compacted layers during site practice, with moisture samples dried in the Laboratory Bench Oven.
- TVET road construction technician modules: pavement layer testing.
Standard Scope of Supply
The set covers the jack, three proving rings, ball seating attachment, bridge support, dial gauge support, bracket and adapter, penetration dial indicator, piston, extension rods and three surcharge weights. A 0.01 mm x 25 mm dial gauge is listed as an extra accessory; the site reaction load is arranged locally.
Packing, MOQ and Lead Time
Quotations are available for one field set or for several sets for group site work, and each states packing, delivery time and price for that quantity. Laboratory CBR and field density items can be listed with it, so the order comes from one TVET lab equipment supplier.
Science Lab Supplies holds an Importer-Exporter Code as a registered exporter, so it can ship to buyers in Nigeria, Kenya, Ghana, Ethiopia, Tanzania and Uganda. Science Lab Supplies is registered for GST (GSTIN 06ADEPJ0574F2ZU). Highway labs pricing a field set can describe their site programme on the contact page, save the set to the enquiry cart with laboratory CBR items, or read the lab tender page before issuing a tender.
Frequently Asked Questions
How does field CBR differ from laboratory CBR?
Field CBR tests soil where it lies, with this jack working against a heavy reaction load such as a loaded vehicle. Laboratory CBR tests a compacted specimen in a mould on a load frame.
Why are three proving rings included?
Rings of 10, 28 and 50 kN let you match the ring to the expected load: a smaller ring reads finer on weak soil, while the 50 kN ring covers the full jack capacity.
Who supplies the Field CBR Equipment?
Science Lab Supplies is the supplier, working from Ambala in India. Jack, rings, rods and weights appear together as one line on its quotation, alongside the packing method and delivery time for your quantity.
Related CBR, Bearing and Field Density Equipment
Field bearing tests are normally planned together with laboratory CBR, compaction and density checks on the same soil. These Soil Mechanics items complete that programme for a highway engineering or road construction lab, and any of them can be quoted with the field set.
- CBR Test Machine Hand Operated — hand-operated 5000 kg load frame with a 150 mm mould.
- Motorised CBR Machine — 50 kN twin-column frame with a 133 mm platen.
- Plate Bearing Test — 0–500 kN jack with 30, 45 and 60 cm mild steel plates.
- Automatic Mechanical Soil Compactor — counts blows and stops at a preset number.
- Sand Replacement Equipment — plated sheet steel calibration container and tray.
- Cone Apparatus — 305 mm cone unit for gravels and coarse soils.
- Core Cutter — driven into soil with a rammer to take a density core.
Browse the full Soil Mechanics range, the Concrete Laboratory range, or all TVET lab equipment.
Last updated: 9 October 2026
