Hello! Welcome to the online home of
T T PRECISION ENGINEERING
We are a CNC Engineering company based in South Woodham Ferrers, Chelmsford.
We hope you enjoy our website, why not look at the services we offer or get in touch.
DYNAMIC CONE PENETROMETER
The DCP (Dynamic Cone Penetrometer) is an instrument designed for the rapid insitu measurement of the structural properties of existing road pavements constructed with unbound materials.
Continuous measurements can be made down to a depth of 850mm or, when extension shafts
The DCP requires 3 operators; one to hold the instrument, one to raise the weight and one to record the results.
Well proven, robust design
Made in England
Fully plated
Portable and easy to operate
Tests can be carried out in minutes
Standard Kit
Drop weight: 8 kg
Drop height: 575 mm
HardendCone: 60 °
Testing depth: 850 mm
Dimensions
Case size approximately 110 x 25 x 15 cm
Weight approximately 22 kgs
Optional Extension Rods
1mtr rods (with incremental measurement lines)
Optional Weight change

DYNAMIC PROBE EQUIPMENT
- 35mm Rods – 1 meter and 1/2 meter long
- 22mm Rods – 1 meter and 1/2 meter long

DYNAMIC PROBING CONES
Probe cones are used for Dynamic Probing which determines the resistance of soils in-situ in accordance with BS 1377 Part 9.
Probe cones can be sacrificial or retained and are available in Bright Mild Steel.
Two types of Dynamic Probing Apparatus |
||
Part |
Heavy (DPH) |
Super Heavy(DPSH) |
Drive Weight (kg) |
50 ± 0.5 |
63.5 ± 0.5 |
Drop Height (mm) |
500 ± 10 |
750 ± 20 |
Nom. Cone Area (cm2) |
15 |
20 |
Cone Diameter (mm) |
43.7 ± 0.3 |
50.5 ± 0.5 |
Cone Mantle Length (mm) |
43.7 ± 1 |
50.5 ± 2 |
Cone Tip Length (mm) |
21.9 ± 0.1 |
55.3 ± 0.4 |
Drive Rod Diameter (mm) |
35 |
35 |
Drive Rod Mass (kg/m) |
6 |
8 |
All cones have a 90° point, and may be sacrificial (without thread), or retained (with thread). |
HAND AUGER KIT/CLIP-ON CONNECTION
A comprehensive set for augering all types of soil down to a depth of 8-10 metres. These kits are specifically designed for use in soil research studies and are made to a high standard to ensure a long service life.
Clip-on connection: The advantage of the clip-on connection is that it is very fast with little weight. The clip-on connection is strong, rigid and long lasting
Hand Auger Kit consisting of:
• 6 x 1 metre clip-on rods
• 1 x Driving Handle
• 2 x Dutch Hand Augers S/L (55mm and 75mm diameter)
• 7 x Slide Tubes for clip-on rods
• 1 x Short tube for clip-on rods
• 1 x Solid clip-on adapter for driving handle
HAND AUGER KIT/SCREW THREAD CONNECTION
Screw thread connection: This connection is based on male and female thread on the parts to be coupled. The use of tapered threads for connection allows you to simply hand tighten the connection to create a rigid construction.
Hand Auger Kit consisting of:
• 6 x 1 metre Auger rods
• 1 x Driving Handle
• 2 x Dutch Hand Augers S/L (55mm and 75mm diameter)
• 5 x Couplings
MACKINTOSH PROBE
Mackintosh Probe Kit consisting of:
ROD LIFTING TOOL
The Rod Lifting Tool can be used on both the Dynamic Cone Penetrometer and the Mackintosh Probe.







CONTACT
To get in touch, please use one of the following options:
29 Drapers Road, South Woodham Ferrers, Chelmsford, Essex, CM3 5UH
sales@ttprecision.co.uk
CONTACT FORM