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ENGINEERING DIVISION

FIELD OF CIVIL ENGINEERING ROADS INFRASTRUCTURE EXPERTISE

FEASIBILITY STUDIES

Technical
Financial
Socio-economic
Environmental

MASTER PLANNING

Data collection
Data analyses
Conceptual Design
Cost Estimates
Economic Analyses

BULK AND LINK SERVICES

Needs Analyses
Capacity Analyses
Network Analyses and Design

INTERNAL SERVICES

Streets Solid Waste Management
Stormwater Drainage

ROAD MAINTENANCE AND REHABILITATION

Needs Analyses and condition Surveys, Maintenance Strategies
Structural Analyses, Pavement Design
Material Design, Geometrical Improvement

STRUCTURAL ENGINEERING

CAPABILITY STATEMENT

DIGES's Structural team is capable of handling a medium-scale project over the entire spectrum of structural design from concept stage through to contract administration and quality control.

SERVICES

Planning-project objectives, design criteria, site selection, layout optimisation
Design-preliminary and final design, plans and specifications
Materials-evaluation of sources, quality, cost, specification
Construction- monitoring/administration, payment, claims, liasing with client/contractor

TYPE OF PROJECT

Residential, Commercial, Educational, Institutional, Public and Leisure Buildings
Rehabilitation of Structures
Reservoirs and Water Storage Structures

SOME RECENT PROJECTS DONE BY KEY STAFF

Moutse East Clinic

CIVIL ENGINEERING STRUCTURES

Water retaining structures
Retaining walls
Sewerage plant units
Small bridges and culverts

BUILDINGS

Residential buildings
Office blocks
Clinics
Houses

WATER AND WASTE WATER MANAGEMENT

CAPABILITY STATEMENT

DIGES offers experience and expertise in the fields of water treatment, storage and distribution, and treatment and disposal of wastewater.

SOME RECENT PROJECTS DONE BY THE KEY STAFF

Upgrading of Ermelo Sewerage Plant
Construction of the Sewerage Package Plant in Sheepmoor
Balfour Bulk Supply Line -1000m
Sedibene/Bellevue Water Reticulation - 5000m pipeline, 2 reservoirs and 3 boreholes

FIELDS OF WATER AND WASTE WATER MANAGEMENT EXPERTISE

MANAGEMENT

Water and Waste Water strategies

WATER SUPPLY

Water source development
Bulk supply line
Distribution systems

INTERNAL SERVICES

Water Reticulation
Water Borne Sewerage

SEWAGE

Sewage collection systems
Sewage treatment
Sewage effluent disposal

WATER TREATMENT

Potable water treatment and storage

PROJECT MANAGEMENT

CAPABILITY STATEMENT

DIGES has experience with project management throughout a range of projects done by its key staff. We believe that project management is a creative activity and shaped by the decisions of our clients, therefore we bring the highest level of commitment and management skills and techniques to bear on these projects.

Our multi-disciplinary professional team is capable of coordinating the different phases of small and medium-scale projects, in which all or part of the following comprehensive services are included depending on the particular project and/or clients' requirement:

OFF SITE PROJECT MANAGEMENT

Strategic Planning
Project Evaluation
Risk Assessment
Cost Analysis and Control
Supervision
Quality Control
Project Administration

SITE PROJECT MANAGEMENT

Programming
Resource Scheduling
Budgeting
Financial Control

COMMUNITY BASED PROJECTS

CAPABILITY STATEMENT

DIGES is aware of the needs for community participation to ensure the effectiveness and sustainability of any project and recognizes that the successful provision of serve ices to a community must be a people driven process.

The firm is involved in empowerment and human capacity building in disadvantaged communities through various projects and the community is involved through training and workshop where full community participation is achieved.

DIGES focuses on providing education and training for all members of the community it works with, so that the community is left with an enhanced capacity, which promotes the sustainability of project and further development.

ENVIRONMENT & GIS DIVISION

ENVIRONMENTAL SERVICES

Ecological risk assessment
Environmental pollution assessment and prevention
Environmental impact assessments (EIA).
Environmental management systems (EMS)
Waste Management Control:
Environmental audits.
Environmental management programmes (EMPR) and reports.

GEOLOGICAL SERVICES

Geological mapping and exploration geophysics
Remote sensing for
Structural geological mapping

AGRICULTURAL SERVICES

Landuse and development planning
Business plan development
Project Management
Crop and Livestock Production Systems
Cost-benefit Analysis and Marketing
Design and Construction of Irrigation Systems
Irrigation System Rehabilitation
Skills Development

GENERAL GEOHYDROLOGICAL SERVICES

Exploration for groundwater sources
Siting of boreholes
Geological studies and geophysical surveys
Drilling and/or testing supervision and coordination of source development.
Borehole construction.
Evaluation of chemical water analyses
Scientific pump test analysis.
Geohydrological investigations of pollution and sanitation studies.
Groundwater utilization management.

GEOGRAPHIC INFORMATION SYSTEM (GIS) AND WATER DATABASE

Archiving of data on a GIS based water database for future reference.
Compilation of maps for spatial assessment of water monitoring data.

WATER MONITORING AND MANAGEMENT

Development of monitoring protocols.
Development of water management plans.
Accredited Standard sampling of surface and groundwater.
Data evaluation and interpretation to obtain trends in data sets.
Provide management information based trends.
Compilation of monitoring reports.

ENGINEERING GEOLOGICAL SERVICES

Regional engineering geological

Detailed engineering geological investigations for township proclamation purposes, according to the standards of the National Home Builders Registration Council (NHBRC).
Classification of individual plots of land with regard to site classification system of the National Home Builders Registration Council (NHBRC).
Detailed engineering geological investigations for small- to medium-sized civil engineering projects
Engineering geological investigations for the recommendation of suitable design and construction methods for the development of service stations and buried fuel tanks.
Specialized site specific engineering geological investigations for location of heavy civils projects, new and existing cemeteries and solid waste disposal sites.
Dolomite stability investigations.
Data analyses and management by means of a Geographical Data Analyses System (GEODAS/GIS).

SPECIALISED GEOHYDROLOGICAL SERVICES

Risk assessment and Geohydrological Modelling:

Mine dewatering design.
Evaluation of flooding rates for closed down mines.
Recommendations on and analysis of aquifer tests.
Development of conceptual models from site geological data.
Determination of radius of influence of dewatering.
Modeling of interaction of surface water and groundwater.
Development of conceptual groundwater flow models.
Simulation of moisture movement through the unsaturated zone (mine dumps).
Quantify the influence of recharge on groundwater sustainability.
Simulation of leakage from dams and weirs.

Groundwater Pollution and Remediation

Siting of waste sites and tailings dams.
Recommendations on the installation of piezometers and monitoring boreholes.
Recommendations on remediation strategies.
Determinations of capture zones.
Recommendations on groundwater pollution monitoring and control.

Contaminant Transport Modelling

Modeling the fate of contaminants in the subsurface.
Simulation of advective and reactive contaminant transport.
Development of futuristic scenario's.
Simulation of contaminant movement through the unsaturated zone (mine dumps).
Groundwater Management and Risk Assessment

Optimizations of mine dewatering structures·and groundwater supply systems.

Development of groundwater monitoring networks and databases.
Stochastic modeling for risk analysis.
Risk-cost analysis for groundwater management in water supply, remediation and
planned new facilities such as lining barriers for mine tailings dams.