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Published 28.11.2015 | Author : admin | Category : Men Women Love

Occupying a small footprint, the compact and extremely versatile Dando Terrier drilling rig is designed to be easily transportable and simple to manoeuvre through tight spaces with difficult access, causing very little disturbance to its surroundings- it can even fit through a standard doorway.
A fabricated box section sub-frame incorporating drop hammer support, controls, engine mounting and tool storage. The entire mast assembly with wheels can be detached from the main superstructure for operation in areas of restricted access. A purpose built crawler chassis with rubber tracks fitted with tilt mechanism, allowing rig to operate vertically on slopes inclined up to 30 degrees from horizontal. A quick connect auxiliary circuit is fitted as standard to the Terrier hydraulic system which runs the Terrier sampling hammer as well as other equipment, including sand guzzlers and casing jacks.
Driven by a hydraulic motor fitted with a 7 : 1 ratio gearbox with manual gear change, providing full controlled power and rotational speeds in forward or reverse. A fabricated welded steel box section construction fitted with a pair of wheels and two levelling jacks. Provided by a single double-acting ram transmitting adjustable hydraulic load to the rotary head. A UK golf club’s tractor mounted Dando Terrier drilling shallow dewatering holes on its greens, predominantly made of clay, for draining surface water. Supplied in 2007, a Costa Rican customer's Dando Terrier which drilled two boreholes up to 45m deep (coring with T2-76) in mud and sand conditions. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.


Clipping is a handy way to collect and organize the most important slides from a presentation. CATSURVEYS Group offers professional, cost effective site investigations tailored to individual client requirements. Working closely with our clients, from major utility companies, consulting engineers, insurance companies to the general public, we are able to offer a versatile approach to site investigations, without the need to re-attend site at a later date to complete further intrusive works.
Our communication, cooperation and management strategy has assisted us in continually developing and adapting our approach, which ensures a long lasting positive, proactive and professional working relationship with all of our long term clients. Suitable for all construction hard surface materials and for examination of brick, concrete or composite structures, with both vertical and horizontal drilling available.
Using the latest in photogrammetry techniques we are able to produce 3D as-built, measurable models of the excavation. Standard Penetration Tests (SPTs) provides in-situ information on the relative density of granular deposits, such as sands and gravel. Heavy (HDP) & Super Heavy Dynamic Probe (SHDP) testing is used to determine the resistance of in-situ soils.
Our in-house Geotechnical Engineers carry out comprehensive reporting as appropriate to our client’s requirements. The Dando Terrier site investigation rig is now available in a new lightweight version, constructed from high grade aluminium and designed using latest software. The Dando Lightweight Terrier boasts a lower ground pressure for when working in sensitive, fragile terrains and also provides a wider range of logistic options.


The circuit is protected by a separate pressure relief valve and has a variable flow control valve fitted to the control panel for fine control. Integral side inlet water swivel with BW Rod connection fitted to travelling carriage plate with bolts. Hydraulically raised and lowered by a single double-acting ram on the main Terrier undercarriage and attached via the pivot frame assembly.
Having previously used a drilling contractor to conduct this work, the customer’s new Terrier proves a more cost effective and flexible solution, with the rig being readily available when needed.
Place your alternate content here and users without the Flash plugin or with Javascript turned off will see this. From initial Desk Studies through to intrusive investigation, laboratory analysis and interpretative reporting, our aim is to meet your expectations in the field of ground investigation. Our in-house Geotechnical Engineers carry out comprehensive reporting and testing as appropriate to our client’s requirements.
Diameters ranging from 50mm to 250mm, with larger sizes being available on specific request.
Its compact design allows easy access through tight, narrow passages and the optional expanded tracks provide increased stability when needed.



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