KTE operates two 30-ton (4-axle) CPT rigs that are heavier than most CPT rigs in the United States. By adding a fourth tag axle we can legally operate our rigs at a full 30 tons. This gives us the advantage of being able to push deeper and through denser soils than our competitors. The rigs and tooling were specifically designed with the challenging soils often encountered in California. The air conditioned testing area of the CPT rig contains the push frame, data acquisition system, portable computer and color printer. A 500 gallon stainless steel water tank is mounted in front of the push frame to provide even more ballast when required. A stainless steel triple wash sink is also located inside the CPT when decontamination of samplers is required. A steam cleaner can also be connected to the wiper canister located under the CPT rig for decon of the push rods.
For seismic shear wave measurements an air accuated hammer is built into the front jack pad of the CPT rig. This setup provides excellent coupling with the ground because of the weight of the rig. The powerful seismic hammer provides clear shear wave measurements to depths over 150 feet. The shear wave hammer is controlled by the operator inside the CPT rig (unlike many manual shear wave hammer setups) for maximum efficiency.
The CPT rigs are quite large and are not ideal for tight access or loose soil sites. For these sites our portable CPT setup with truck mounted, track or limited access rigs may be more appropriate. For sites that require limited travel over loose soils or lawns, mats can be brought to the site to allow access for the CPT rig.
Work Height: 15.2 ft | Length: 34 ft
Drive Height: 13.2 ft | Width: 8.5 ft