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. Science Lab Supplies provides the complete set from Ambala, India to training institutes, colleges, tender contractors and distributors.
Specifications
The set is built around a 50 kN field CBR jack, 8.5 kg in weight and 254 mm high, with proving rings of 10, 28 and 50 kN to suit weak or strong soils. Steel-tube extension rods space the ring from the piston, and surcharge weights load the surface around it.
| Parameter | Value |
|---|---|
| SKU | LSK-SM-10648 |
| Field CBR jack | 50 kN, 8.5 kg, height 254 mm |
| Proving rings | 10 kN, 28 kN, 50 kN |
| Penetration piston | 50 mm dia, threaded upper end |
| Surcharge weights | Slotted 4.54 kg and 9.07 kg (215–250 mm dia); circular 4.54 kg (250 mm dia); 53 mm slot or hole |
| Extension rods | 2 x 5 cm, 2 x 10 cm, 30 cm, 50 cm, 100 cm |
| Dial gauge support | Seamless pipe, 30 cm high, 45 cm base; clamp slides along the 2 m bridge |
| 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.
- Diploma civil engineering: field testing of compacted layers during site practice.
- 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). Reach the team through the contact page or the enquiry cart, and find tender details on the lab tender page.
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, from Ambala, India. The set is quoted as one line with its jack, rings, rods and weights, and the quotation states packing and delivery time.
Related CBR and Field Testing Equipment
Field bearing tests are normally planned together with laboratory CBR and density checks on the same soil. These four items from the Soil Mechanics range complete that programme for a highway engineering lab and can be quoted with the field set.
- CBR Test Machine Hand Operated — laboratory CBR on moulded specimens.
- Motorised CBR Machine — laboratory CBR with a motor-driven frame.
- Plate Bearing Test — plate load test for bearing capacity.
- Sand Replacement Equipment — field dry density of the tested layer.
Browse the full Soil Mechanics range or all TVET lab equipment.
Last updated: 25 September 2026
