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 |