Geotechnical Engineering

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GEOTECHNICAL ENGINEERING DEPARTMENT

Geotechnical Engineering Department offer a broad range of geo-engineering (soil investigations, materials investigations and pavement evaluation/design) consultancy services to Multidisciplinary Engineers, Architects, Consultants, Contractors, Local Authorities, Government Agencies, Developers, Utility companies and many others. The department has undertaken hundreds of projects throughout Tanzania.

Amongst our number are higher degree qualified registered Engineers, Consultants, Geologists, Technicians, Drillers and other support staff. The team can boast many years experience of highly varied site and ground conditions. We have undertaken a broad range of projects including: bridges; roads; railways; airports; educational buildings; commercial buildings; industrial developments; housing developments; sports facilities; and pipelines.

We boast of having three drill rigs (Dando, UK) capable of drilling and coring up to 90m and a number of testing equipment. We are on the verge of establishing a certified laboratory capable of performing a wide variety of tests including grain size analysis, plasticity index, permeability, swell/consolidation tests, standard and modified proctor tests just to name a few. Such tests are currently conducted often though our trusted subcontract laboratories.

Key consultancy services offered include soil investigations; materials investigations and pavement design. Site investigations involve investigations and analysis to define subsoil conditions and design parameters, recommendation of foundation types based on analysis of results in line with specific needs, and project management services to ensure manage contracts on behalf of our clients.

A typical ground investigation might include a desk study, drilling boreholes, SPTs, CPTs, trial pits, in-situ field testing, geotechnical laboratory testing and geophysical survey. We typically would provide recommendations for drilled piers, spread and continuous footings, post-tension slabs on grade, foundation drain systems, pavement and site construction.

We understand that Site Investigation is all about understanding and reducing risk. In so many cases, important decisions are made based on the information gained through a site investigation. You need to trust that this information will be reliable, accurate and on time.

Site Investigations activities undertaken by our team of experts include but not limited to the following:

  • Sounding (CPT) tests to determine subsoil profiles and bearing capacities
  • Test Pits for profiling and in-situ testing
  • Bulk and undisturbed sampling from boreholes
  • Rotary core drilling and sampling
  • Standard penetration test
  • Piezometer installation
  • U100 undisturbed sampling using Standard
  • Percussion drilling and rotary drilling
  • Plate load test to determine bearing capacity for shallow footings
  • Geophysical surveys in quarry sites
  • In – situ density test using sand replacement method
  • Ground water monitoring and sampling
  • Laboratory testing

Materials Investigations entails ascertaining the quality of earmarked construction materials for roads/highways/airport pavement as well as determination and analysis of in situ strengths of existing sub-soils and/or existing pavement layers. We have expertise enabling us to identify different soil/rock types, problem soils, use sound sampling techniques, recommend appropriate laboratory testing, and analysis of results enabling the most cost effective solution to any problem related to materials design and specifications.

Pavement Designs/Evaluations entails consultancy in the design, construction and maintenance of road, airfield and industrial pavements for a wide range of clients including; the Highways Agencies, Airports Authorities, Contractors, D&B and DBFO consortia, trade organizations, material suppliers, consultants and other local authorities.

Typically our consultation enables the client to alleviate delays and associated costs and to prepare the necessary budgeting for your project. Materials investigations and pavement designs are required in feasibility studies, preliminary designs, detailed engineering designs, quarry investigations, pavement evaluations for a number of roads, railways, airports and bridge projects.

RECENT PROJECTS

Project Name Location Year Type
Proposed Dar Es Salaam School facility development program Dar Es Salaam 2001 Material Survey
Proposed Azam 5 building site at former NMC site TAZARA Junction Dar Es Salaam 2001 Material Survey
Upgrading and lengthening of Songosongo Airstrip’s Runway Lindi 2002 Pavement design
Soil investigation and preparation of Geotechnical report for the Songo-Songo Gas Development Project located at Songosongo Island onshore/offshore and Somanga Funga onshore/offshore. Lindi 2003 Geotechnical Survey
Geotechnical Investigations for ex-TAZARA hostel & replication of NSSF Mikocheni executive apartments for NSSF Dar Es Salaam 2003 Geotechnical Survey
Geotechnical Investigation for Proposed Control Tower for Tanzania Harbors Authority located at Dar Es Salaam Ilala district. Dar Es Salaam 2004 Geotechnical Survey
Geotechnical Investigations for Kagera Sugar Factory Kagera 2004 Geotechnical Survey
Geotechnical Investigations for proposed rehabilitation at Twiga Cement Factory Dar Es Salaam 2004 Geotechnical Survey
Repair of Sinking Shed Floors (quay areas) at the port of Dar Es Salaam Dar Es Salaam 2005 Geotechnical Survey, pavement design
Geotechnical Investigations for proposed New Lecture theatres for MUCHS Dar Es Salaam 2005 Geotechnical and Materials Survey
Geotechnical Investigations for proposed Vingunguti bridge and approach roads for ILALA Municipal Council Dar Es Salaam 2005 Geotechnical and Materials Survey
Geotechnical Investigations for various bridges along Kilwa road for construction Projects Consultants (JAPAN) Dar Es Salaam 2005 Geotechnical and Materials Survey
Geotechnical Investigations for the proposed Tanroads HQ Building – Mabibo Site Dar Es Salaam 2005 Geotechnical Survey
Geotechnical Investigations for proposed MAFUTA house car park building for NSSF Dar Es Salaam 2005 Geotechnical Survey
Geotechnical Investigations for Proposed Network Management Centre Building for President’s Office Public Service Dar Es Salaam 2006 Geotechnical Survey
Proposed CEDHA building for centre for education development in Health Institute in Arusha Arusha 2006 Geotechnical Survey
Geotechnical Investigations for Proposed VETA buildings for VETA centers in Babati and Arusha Manyara, Arusha 2006 Geotechnical Survey
Geotechnical Investigations for Proposed development for Oysterbay Hotel Dar Es Salaam 2006 Geotechnical Survey
Detailed design for the upgrading of Songea – Namtumbo – Tunduru Road (265 km) to bitumen standards Ruvuma/Mtwara 2007 Geotechnical Survey
Detailed design for upgrading of Laela –Sumbawanga Road (96 km) to bitumen standards Rukwa 2007 Geotechnical Survey
Suguti Bridge and Approach Roads Singida/Shinyanga 2007 Geotechnical and Materials Survey
Geotechnical Investigations for Proposed VETA building in Kipawa Dar Es Salaam 2007 Geotechnical Survey
Geotechnical Investigations for proposed waste stabilization ponds in Ilemela, Mwanza for MWAUSA Mwanza 2007 Geotechnical Survey
Geotechnical Investigations for Proposed New Mill and Tip Facilities at Mwadui Williamson Diamond Mine for WDL Shinyanga 2007 Geotechnical Survey
Geotechnical Investigations for the proposed 4 storey TANROADS HQ Building for TANROADS HQ – Former International School site Dar Es Salaam 2008 Geotechnical Survey
Geotechnical Investigations for the proposed multi-storey Prime Minister’s Office BUILDING  for PRIME MINISTER’S OFFICE Dar Es Salaam 2008 Geotechnical Survey
Geotechnical Investigations for the proposed Vodacom Main Switch Building Facilities at Mbezi Juu  plot for Vodacom Dar Es Salaam 2008 Geotechnical Survey
Geotechnical Investigations for the proposed 10 storey TANROADS HQ Building for TANROADS HQ – Ohio Street Dar Es Salaam 2008 Geotechnical Survey
Geotechnical Investigations for the Serengeti Breweries plant in MOSHI Kilimanjaro 2008 Geotechnical Survey
Feasibility Study, Preliminary Design for upgrading of Mpemba – Isongole Road (51.15km) to bitumen standards Mbeya 2009 Materials and Pavement design
Upgrading of Kawawa – Nduoni –Marangu mtoni Road to Bitumen Standards Kilimanjaro 2009 Materials Survey, Pavement Design
Upgrading of Mafia Access Road (14.3Km) to Bitumen Standards Lindi 2009 Materials Survey, Pavement design
Geotechnical Investigations for the proposed TCU HQ Building for Tanzania Commission for Universities Dar Es Salaam 2009 Geotechnical Survey
Geotechnical Investigations for the proposed Isaka Dry Port Geita 2009 Geotechnical Survey
Geotechnical Investigations for the proposed Magara bridge site in Manyara Manyara 2009 Geotechnical Survey
Geotechnical Investigations for the proposed Momba bridge and approaches Rukwa 2009 Geotechnical Survey
Geotechnical Investigations for the proposed bridges along Mangaka to Tunduru Road Mtwara/Ruvuma 2010 Geotechnical Survey
Geotechnical Investigations for the proposed 12-storey Maji House Dar Es Salaam 2010 Geotechnical Survey
Geotechnical Investigations for Saohill Watsan Project Iringa 2010 Geotechnical Survey
Geotechnical Investigations for the proposed 60km water pipeline from Lower Ruvu – Bagamoyo – University Reservoir (DSM) Coast, Dar Es Salaam 2010 Geotechnical Survey
Geotechnical Investigations for the proposed 8 storey NMB HQ Building for UPANGA Joint Venture Ltd Dar Es Salaam 2010 Geotechnical Survey
Feasibility Study, Detailed Design for upgrading of Mangaka – Tunduru Road (139.6km) to bitumen standards Tunduma 2011 Geotechnical Survey
Feasibility Study, Detailed Design for the Upgrading of Nyamuswa – Bunda – Kisorya – Nansio (118km) Road to bitumen standards Musoma 2011 Materials Survey
Upgrading of Handeni – Kiberashi – Kwamtoro – Singida Road (431Km) to Bituminous Standards Tanga, Manyara, Dodoma, Singida 2011 Geotechnical and Materials Survey
Ground boring under the sea at Kigamboni bridge Dar Es Salaam 2011 Geotechnical Survey
Ground boring at power plant, TANESCO Ubungo, Dar Es Salaam Dar Es Salaam 2011 Geotechnical Survey
Feasibility Study, Detailed Design for upgrading of Handeni – Kiberashi – Kwamtoro – Singida Road (461km) to bitumen standards Singida 2012 Geotechnical Survey
Feasibility Study, Detailed Design of Handeni – Mkata (54km), Korogwe – Handeni (65Km) and Handeni – Mziha (70Km) Roads to bitumen standards Tanga 2012 Geotechnical Survey
Investigations for the proposed widening and upgrading of Bulyanhulu Airstrip for African Barrick Gold Shinyanga 2012 Materials Survey
Geotechnical investigations for proposed refrigeration plant at Bulyanhulu African Barrick Shinyanga 2012 Geotechnical Survey
 Field Investigations for proposed 10-storey Centre Point Mall – Dar Es Salaam Dar Es Salaam 2012 Geotechnical Survey
Field Investigations for the proposed Chole Dam at Chole Village, Kisarawe Coast 2012 Geotechnical Survey
Geotechnical Investigation for Proposed Residential Apartment Block on Plot 623, Sinza, Dar Es Salaam. Dar Es Salaam 2012 Geotechnical Survey
Geotechnical Investigation for Proposed construction of Ngorongoro Investment House – Arusha City Arusha 2012 Geotechnical Survey
Geotechnical Investigations for the proposed Qorong’aida Bridge site Manyara 2012 Geotechnical Survey
Rehabilitation of Barrick Gold North Mara Airstrip Mara 2013 Geotechnical Survey
Geotechnical Investigation for Refurbishment of Medical Stores Department Headquarters in Keko Dar Es Salaam 2013 Geotechnical Survey
Field Investigations for proposed Cassava Plant in Lindi for Cassava Starch of Tanzania Corporation in Lindi, Tanzania Lindi 2013 Geotechnical Survey
Geotechnical investigations for the proposed 10 storey PPF plaza on plot no 15 area in Arusha. Arusha 2013 Geotechnical Survey
Design of proposed weighbridge station at Kurasini along Mandela Road Dar Es Salaam 2013 Materials Survey, Pavement design
Geotechnical investigations for upgrading of Bagamoyo – Tanga/ Lungalunga – Malindi roads to bitumen standards in Tanzania and Kenya Tanga/ Mombasa/ Malindi 2013 Geotechnical Survey
Geotechnical Investigations for the proposed PPF Mtwara Development on plots 130 & 131 Located at Vigaeni, Mtwara region Mtwara 2013 Geotechnical Survey
 Geotechnical investigations for proposed National Housing Corporation building (19 – storey) at Victoria Area, Dar Es Salaam Tanzania Dar Es Salaam 2014 Geotechnical Survey
Geotechnical investigations for proposed expansion of Aga Khan Hospital (8-storey) along Barrack Obama Avenue in Dar Es Salaam, Tanzania Dar Es Salaam 2014 Geotechnical Survey
Geotechnical investigations for the design, supply and installation for upgrading four (4) 220kv substations implemented under Iringa – Shinyanga backbone transmission investment project (BTIP) substations – lot 4. Singida,  Shinyanga 2014 Geotechnical Survey
Geotechnical investigations for the design and construction of UGALLA BRIDGE along Ugalla (Tabora – Katavi Border) – Mnyamasi Regional Road Tabora – Katavi 2014 Geotechnical Survey
Geotechnical investigations for the design and construction of proposed residential houses on Plot No 124/2, located at Oysterbay Area, Kinondoni Municipality. Dar Es Salaam 2014 Geotechnical Survey
Upgrading of Nyamuswa – Bunda – Kisorya – Nansio Road (118Km) to Bitumen Standards Musoma 2014 Geotechnical and Materials Survey, Pavement design
Upgrading of Matai – Kasesya Road (50Km) to Bitumen Standards Rukwa 2014 Geotechnical and Materials Survey, Pavement design
Upgrading of Ifakara – Kihansi Road (120Km) to Bitumen Standards Morogoro 2014 Geotechnical and Materials Survey, Pavement design
Upgrading of Musoma Urban Roads (10.15Km) to bitumen standards and construction of Nyasho Market Musoma 2014 Geotechnical and Materials Survey, Pavement design
Geotechnical Investigations for the proposed office, commercial and hotel Buildings on Plot no. 27 Central Business Park in Dodoma Municipality Dodoma 2015 Geotechnical Survey
Geotechnical Investigations for the proposed apartment block on plot no. 665 Mathuradas road – Upanga Dar Es Salaam Dar Es Salaam 2015 Geotechnical Survey
Geotechnical Investigations for proposed bridges along Mbande – Kongwa Junction – Mpwapwa – kibakwe road in Dodoma region Dodoma 2015 Geotechnical Survey
Geotechnical Investigations for Proposed Various Bridges along Ifakara – Kihansi road section in Morogoro Region Morogoro 2016 Geotechnical Survey
Geotechnical Investigations for the proposed Executive House at plots 28 & 29 along Laibon road in Oysterbay Dar Es Salaam 2016 Geotechnical Survey
Geotechnical Investigations for proposed Multi storey building at Dar Es Salaam Marine Institute Dar Es Salaam 2016 Geotechnical Survey
Design and construction of UGALA Bridge along Ugala (Tabora – Katavi border ) – Mnyamasi Regional Road in Katavi Region Tabora 2016 Geotechnical survey, Materials Survey, Pavement design
Upgrading of Bandari One Road (1.3 Km), Mivinjeni Road (0.8Km) to Bitumen Standards and widening of Bandari Bridge Dar Es Salaam 2016 Geotechnical, Materials Survey, Pavement design
Soil investigation services for Extension of Lake Victoria Pipeline from Nzega to Tabora Tanzania – Package II Tabora 2017 Geotechnical Survey
Rehabilitation and vertical extension of administration block for DUCE Dar Es Salaam 2017 Geotechnical Survey
Preparatory Geotechnical Survey for Rehabilitation of Kigoma Port Kigoma 2017 Geotechnical Survey
Geotechnical investigations for proposed 40MW Power Plant site in GEITA Mwanza 2017 Geotechnical Survey
Upgrading of Arusha – Kibaya – Kongwa Road (493 Km) to Bitumen Standards. Arusha, Manyara, Dodoma 2017 Geotechnical Survey, Materials Survey, Pavement design
Proposed Construction of Mlandege Market Building at Iringa Municipality Iringa 2018 Geotechnical Survey
Upgrading of Isyonje – Kikonde – Makete Road (96.2Km) to Bitumen Standards. Iringa 2018 Materials Survey, Pavement design
Upgrading of Sengerema – Nyehunge – Kahonda Road (108Km) to Bitumen Standards. Mwanza/Geita 2018 Materials Survey, Pavement design

 

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