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- Model H-4219T - Threaded Ends Dual-Mass ...
Model H-4219T -Threaded Ends Dual-Mass Dynamic Cone Penetrometer
Developed by the Army Corps of Engineers, Dynamic Cone Penetrometers (DCPs) provide a low-cost, efficient test method for quickly determining in-situ CBR values of pavement base, sub base and sub grades. DCPs are primarily used to determine in-place soil shear strength in road construction with CBR values from less than 0.5 to 100% and bearing values ranging from 430 to 10,800 psf. They can readily be used for depths from 30 inches to 6 foot with optional drive rods and extensions. All Humboldt DCPs comply with ASTM D6951 specifications and come with a chart to compute CBR values, as well as an Excel spreadsheet template, which automatically charts the test results.
Humboldt`s DCPs are known for their high quality manufacturing and reliability, and, are available with either threaded connections or a quick-connect design. Both Humboldt DCPs feature our exclusive easy-grip hammer that provides a finger grip machined into the back side of the hammer flange, which provides easy, non-slip lifting when performing a test.
Humboldt DCPs consist of a drive hammer and steel extension shaft assembly with a 60° hardened cone tip attached at one end. The cone tip is driven into the pavement or sub grade by means of a sliding dual-mass hammer. The diameter at the base of the cone is 20 millimeters, which is 8 millimeters larger than that of the extension shaft. Humboldt DCPs can also quickly convert to a single- mass unit for use in weaker soils having low CBR values or foundation evaluations by removing the outer sleeve from the dual-mass hammer.
The H-4219T Set includes:
- Dual-Mass DCP Hammer, Threaded Connection — H-4219T.1
- Drive Rod, Threaded, 37.75"— H-4219T.2
- Disposable Cone Adapter — H-4219.5
- Hard Tip Cone — H-4219.4
- Disposable Cones (25) — H-4219.25
- Scale, 48" — H-4219.2
- Single-user Scale Guide Set — H-4219.17
- Wrench Set (Threaded) — H-4219T.7
- Go, No-Go Gauge — H-4219.3
- Pelican Case — H-4219.16
- User Manual and CD