Ayesa Sector: Water

OUR SECTORS

Ayesa - an award-winning, global engineering design, technology and consulting company. Ayesa is one of the largest engineering firms in the world with 6000 employees, 20 locations and 300 million euros in revenues. Ayesa is in the top 50 engineering firms of the world. provides solutions for water supply, wastewater, drainage, flood risk management and asset optimisation for water infrastructure projects. Our interconnected network brings together diverse skills, experience and insight, to turn obstacles into sustainable solutions across our ten sectors: Water. Flooding, Geoscience, Marine & Coastal, Environment & Sustainability, Waste & Resources, Buildings, Conservation, Energy and Transportation.

CONNECTED THINKING ACROSS 10 SECTORS OF EXPERTISE

“Water scarcity and resilience issues are affecting companies more than ever. We offer expertise in securing and protecting water supplies by addressing existing infrastructure and operations via a multi-disciplinary approach.”

GEOSCIENCE MARINE & COASTAL ENERGY BUILDINGS CONSERVATION

WHY WORK WITH US?

• Deeper expertise

• Smarter innovation and collaboration

• Superior service and project delivery

• World-class solutions for complex infrastructure projects

• Diversity, inclusion and investing in professional development

WORKING WITH US

• A PROVEN TRACK RECORD - wide experience across a broad range of water projects in the Ireland, The Middle East and the UK delivering important nationally strategic infrastructure including flood relief schemes. We currently sit on the framework for the Irish national utility provider Irish Water, to help deliver infrastructure over the next 4-7 years.

• CLIENT FOCUSED - we advise utilities, local county councils, operators and public, private partnerships to maximise the value of infrastructure, increase resilience and improve service delivery for customers. We strive to add value to your project to bring lasting impacts into the future.

• ASSET OPTIMISATION - we help clients to design new assets and keep existing ones running in parallel through our detailed understanding of the technical and commercial factors affecting the water and wastewater sector.

• COMPLEX INFRASTRUCTURE DELIVERY - expertise in complex infrastructure projects by applying holistic assessments incorporating multiple factors, including catchment area, existing assets/service performance, demand variance, socio-economic and environmental constraints and opportunities, stakeholder management, and the presence of appropriate governance and regulatory control systems.

• PROCUREMENT AND CONSTRUCTION SUPPORT - we can manage construction and steer your procurement strategy to help deliver enhanced outcomes and return on investment, with the bestinformed expertise at each phase.

• CONNECTED THINKING - our connected global network brings an exceptional depth of expertise with global best practice and experience to ensure sustainability, and to help maximise financial return on projects. This collaborative culture is also applied to all stakeholders, where we seek to understand needs, constraints, opportunities and to optimise solutions.

• BIM - the integration of our BIM and modelling expertise across projects benefits design, programme and cost controls.

• SAFETY FIRST - We advance safety, applying rigorous processes that manage technical, environmental and social risks.

“OUR GOAL IS TO PROVIDE SUSTAINABLE SOLUTIONS FOR WATER AND WASTEWATER CHALLENGES INCLUDING AGEING INFRASTRUCTURE, POPULATION GROWTH, DENSE CITIES, WATER RESILIENCE AND CLIMATE CHANGE”

A holistic approach to water

Solving problems

WATER SUPPLY

• Water storage

• Water treatment and quality

• Transition and distribution

• Conveyance and networks

• Conservation and networks management

• Water resource management & licensing

• Water source development

WASTEWATER

Wastewater collection and treatment

• Catchment assessment and network modelling

• Process optimisation and asset management

MEICA

• Sewer network design

Assimilative capacity assessment

• Construction management

DRAINAGE SOLUTIONS

• Cities/Urban drainage

SuDS (Sustainable Drainage Systems)

• Drainage tunnels & pump stations

• Design of watercourse infrastructure

FLOOD RISK MANAGEMENT

• Flood Risk Assessment (FRA)

Flood Risk Management Plans

• Flood Relief Schemes (FRS)

• Flood extent and hazard mapping

Early flood warning systems

• Flood resilience planning

• Catchment area modelling

ASSET OPTIMISATION / RESILIENCE

Data-driven optimisation modelling

• Cost/benefit analysis

• Asset performance predictions

Programme management

• BIM & digital engineering

A HOLISTIC APPROACH - THE INTEGRATION OF NEW AND EXISTING ASSETS, DEMAND VARIANCE AND ENVIRONMENTAL FACTORS.

NORTH FRINGE WATER SUPPLY SCHEME

The €55m North Fringe Water Supply Scheme was advanced by Dublin County Council to expand infrastructure in the region. The scheme will create a new trunk ‘ring main,’ connecting the network from different sources. Ayesa was appointed to provide engineering design support services to deliver 22km of water mains, a highlevel water tower, pumping station and a new ground-level reservoir at Sillogue beside the M50, a busy motorway.

ARKLOW WATER SUPPLY SCHEME, CO WICKLOW

Lamberton Reservoir and it’s ageing infrastructure has been serving the Arklow Water Supply Scheme in Co. Wicklow Following a survey of the existing scheme, it recommended the upgrading of both the small reservoir and tower undertook the design work on this project to replace the existing underground concrete reservoir and the replacement scheme has secured water supply for local communities and improved the operation and maintenance of infrastructure future.

Wicklow since the 1930s. at Lamberton. We replacement reservoir. This infrastructure and assets for the

WATER SUPPLY

VARTRY TO CALLOWHILL PIPELINE LINK

The Vartry Water Supply Scheme provides drinking water for over 200,000 people in Dublin city and Wicklow, and the 150-year old structure was at risk of failure. The scheme provided for a new linking pipeline to replace the ageing tunnel, which would secure supply, optimise operations and maintenance, and provide drinking water in compliance with EU regulations. Ayesa was responsible for the detailed design of civil, structural, hydraulic, geotechnical, temporary works elements including pipeline routes, pump stations, layout and structures. We used value engineering to reduce the length of the downhill pipeline, which resulted in significant programme and cost

CLIENT: IRISH WATER

PROJECT:

The North East Roscommon Water Supply Scheme involved the delivery of a new water treatment plant to meet future demands, including abstraction from a lake source, new transfer pumping station, and a water treatment plant.

EXPERTISE:

Ayesa was responsible for delivering the designs of the civil and MEICA requirements, supervising the procurement and construction of the new water treatment plant, including the abstraction source and transfer pumping station.

VALUE:

The scheme was a high priority infrastructure project on the Remedial Action List (RAL). Ayesa worked with Irish Water to fast-track the tender process to get the project to site as quickly as possible.

PROJECT FOCUS

NORTH EAST ROSCOMMON

WATER SUPPLY SCHEME IRELAND

Our team manage the construction and tender processes

CLIENT: METSCO

PROJECT:

The Kingdom of Saudi Arabia is investing in the production of desalinated water as part of their Vision 2030 plans with a 5 billion a year infrastructure investment to meet future growth in demand. When phase 3 and phase 4 are integrated, shaqaiq will be one of the largest reverse osmosis plants in the world with supply of 650 000 m3/day. This is one of the most complex water transmission systems in the Kingdom: on its route from the Shuqaiq 3 desalination plant on the Red Sea coast, the pumped water must overcome a positive gradient of more than 2000m and requires tunnelling through several mountains. These exceptionally challenging conditions require significant hydraulic and tunnelling engineering.

EXPERTISE:

Leading engineering analytics firm, METSCO commissioned Ayesa to provide the detailed engineering design of package B and C (reservoir and pump stations). We provided the detailed design of the 3,125m³/hr pumping station, 8km of 1600mm dia. gravity pipeline and 1200mm rising main. Our brief included all structural, architectural, civil, hydraulic, surge, M&E, controls & instrumentation design and cathodic protection design requirements. In addition, we undertook the structural design for a 170,000m³ water tank foundation, water quality monitoring building design and the site drainage and roads design for the water tank location including a provision for expansion with an additional five water tanks of 170,000m³.

VALUE:

With the use of state-of-the-art geotechnical software and a thorough understanding of the soil characteristics, wave and current loadings we were able to optimise the design and reduce the number of piles required. This reduction resulted in cost and time savings.

PROJECT FOCUS

SWCC AL SHUQAIQ PHASE 3

WATER TRANSMISSION SYSTEM

MODERN WASTEWATER TREATMENT PLANTS ARE SOPHISTICATED FACILITIES REQUIRING DESIGN EXPERTISE ACROSS A RANGE OF DISCIPLINES.

AL DHAKHIRA STW, QATAR

Our team provided the detailed civil engineering design for the Sewerage Treatment plant at Al Dhakhira in Qatar, as part of the $88m scheme. Al Dhakhira is an established and growing residential town north of Doha. The new STW (Al Dhakhira Sewage Treatment Works) will serve a population of up to 205,000 people, meeting demands to 2036.

SWORDS WWTP NORTH COUNTY DUBLIN, IRELAND

Swords is a commuter belt town close to Dublin city that has grown exponentially in the past two decades. The existing wastewater treatment needed to increase capacity to 90,000PE. We undertook the detailed design, procurement and construction supervision of the expansion. As the plant is close to the community, the odour was to be as kept as low Our team worked to alleviate the client’s concerns by modelling the odour impact and identifying appropriate mitigation We ensured that all new processes were fully enclosed and applied a tertiary treatment on extracts to prevent odours.

existing and the low as possible. mitigation measures. odours.

WASTEWATER

ARKLOW WASTE WATER TREATMENT, WICKLOW

The development of a new wastewater treatment plant in Arklow, Co. Wicklow expands capacity to treat 36,000 PE. It will also stop the flow of untreated wastewater to the Avoca River via a new sea outfall. Working in collaboration with Arup, our role is to design preferred routes, so the interceptor sewers can gather the outfall and transport it to the new treatment plant. Given the location of existing untreated outfalls and transport flows to the new treatment plant, the challenge is to find the optimal alignment of sewers, in what are, difficult ground conditions.

CLIENT: IRISH WATER | BAM | VEOLIA | €12M

PROJECT:

Irish Water is expanding and upgrading the sewerage systems in communities across Ireland as they continue to grow. The existing plant needed to cater to an estimated increase in population from 80,000 to 130,000 people.

EXPERTISE:

Our role includes the detailed design of all civils for the upgrade of the main plant and sludge treatment facility. Our work including design of 2km of interconnecting pipework; 17,000m3 of combined anaerobic/anoxic reactor, stormwater tank structure, primary and final sedimentation tanks, sludge digestion chambers, tertiary treatment chambers, and associated process buildings.

VALUE:

Existing buildings were repaired and refurbished to accommodate new process equipment, and the completed scheme improved the effluent quality, which now meets the EU regulations.

130,000

CLIENT: PUBLIC WORKS AUTHORITY | PETROSERV

PROJECT:

The city of Al Kor had been experiencing significant growth, with existing sewage treatment facilities overloaded. The treatment works needed upgrading to cater for a population up to 36,000 people.

EXPERTISE:

Ayesa (in partnership with their local partner ASCO) were responsible for the preliminary and detailed design, civil and structural design of buildings, drainage channels and pipe support systems to extend the existing sewage treatment works. Our role also included temporary works and construction sequencing to keep the existing plant operating during expansion works.

VALUE:

We committed resources to design the treatment plant with the lowest costs of construction, for the (Petroserv), the contracto. By applying value engineering, we created cost-efficient structures with a focus on resiliency, maintenance and operation. We also provided HAZOP and CHAZOP reviews and consulted on building and roads infrastructure.

PROJECT FOCUS

SEWAGE TREATMENT WORKS AL KHOR, QATAR

36,000 PEOPLE

CLIMATE CHANGE WILL AFFECT DRAINAGE SOLUTIONS INTO THE FUTURE AND MODELLING IS USED TO IDENTIFY DEFICIENCIES IN THE EXISTING NETWORK AND TO PLAN FOR FUTURE CAPACITY.

BRAY SHANGANAGH DRAINAGE SCHEME

The €65m project included a new wastewater treatment plant, the renovation of the existing pumping station, and the construction of a 6km transfer pipeline from Bray to Shanganagh. The new plant is estimated to serve a population of 248,000 people. Our role included the design of the municipal wastewater treatment plant, Bray Pumping Station, Storm Tank and the 6km Bray to Shanganagh Transfer Pipeline.

BLANCHARDSTOWN REGIONAL DRAINAGE SCHEME

Appointed by Irish Water, as consulting engineers and designers for the Blanchardstown Regional Drainage Scheme project underground storage tanks with a total capacity of approximately 30,000m³ and 3.2km of large diameter pipeline. This trenchless tunnelling techniques, connecting to the Tolka Valley Park Pumping Station. Ayesa also prepared the Environmental to accompany the planning application made by Irish Water. This project is now completed.

project - we designed the deep pipeline is being installed using Environmental Impact Statement (EIS)

DRAINAGE SOLUTIONS

ARKLOW MAIN DRAINAGE SCHEME

Ayesa undertook a comprehensive study which mapped wastewater flowing into low lying areas, particularly the South Green where flooding events occurred at least twice per year. Our modelling study identified deficiencies in the network, such as capacity, deteriorating infrastructure, and inappropriate discharge into the Avoca River. The proposed solution will end the river discharge and includes two new sewer interceptor pipelines (along the north and south quay), which will transport the untreated wastewater to the proposed WWTP. The submarine pipe will safely transport the treated water to the Irish Sea.

CLIENT: IRISH WATER | €88M | COMPLETION 2023

PROJECT:

This substantial project includes the upgrade and expansion of the existing sewer network in Blanchardstown and surrounding catchment counties.

EXPERTISE:

Irish Water appointed our team as consulting engineers and designers for this significant project. We designed the 30m deep underground storage tanks (with a total capacity of approximately 30,000m³) as well as the 3.2km diameter pipeline. The pipeline is being installed using trenchless tunnelling techniques. As the site is adjacent to a motorway and river, we completed the required catchment surveys and river modelling and prepared the Environmental Impact Statement (EIS) for planning.

VALUE:

The new pipeline is being constructed by trenchless tunnelling, which has minimal impact and disturbance to the area when compared to open-cut techniques. The new scheme will reduce the volume and frequency of untreated wastewater overflows into the River Tolka and the surrounding ecosystem. The completed development will increase capacity and support economic prosperity in the region.

PROJECT FOCUS

BLANCHARDSTOWN REGIONAL

DRAINAGE SCHEME DUBLIN, IRELAND

ONE OF THE LARGEST CAPITAL INVESTMENT

PROJECTS UNDERTAKEN BY THE IRISH WATER UTILITY

WITH CLIMATE CHANGE, PHYSICAL FLOOD MANAGEMENT SOLUTIONS

BECOME VITAL: FLOOD EMBANKMENTS AND BARRIERS, RIVER TRAINING AND COASTAL PROTECTION

BANDON FLOOD RELIEF, CORK

The Office of Public Works (OPW) appointed us to undertake the feasibility, planning, design, construction supervision and handover of the €17.5m project scheme in 2020. The system involved dredging 3.6km of the river to increase flow capacity, construction of new walls and embankments along the Bandon River, replacement of a steel footbridge, an underpinning of Bandon Bridge, and the construction of one of the longest rock ramps for fish passage in Europe.

CARRIGTWOHILL FLOOD RELIEF SCHEME, CORK

Carrigtwohill Flood Mitigation measures is a €3.7 million project to mitigate flood risk in lands owned and operated by national foreign direct investment agency). The scheme includes maintenance river cleaning, flood defence embankments, drainage infrastructure and a 1500mm diameter storm overflow pipe connected to a 48,000m3 attenuation system, which flows, and protects clients in the business park. Ayesa managed all services, including hydrological studies and assessments, flood risk management options and planning applications. We took responsibility for the geotechnical and structural Collaboration across stakeholders, including Irish Rail and Irish Water, was crucial to the success of the project.

FLOOD RISK MANAGEMENT

RIVER DARGLE FLOOD DEFENCE SCHEME, WICKLOW

by the IDA (Ireland’s embankments, stormwater which restricts downstream assessments, hydraulic modelling, structural design of the scheme.

The River Dargle has historically caused flooding in the Bray area. The River Flood Defence Scheme now protects hundreds of properties in County Wicklow from future flood damage. The local country council appointed Ayesa to provide detailed design and tender documentation for this scheme. To deliver value by integrating existing infrastructure, we recommended a range of construction options. These included earth embankments, piled walls, concrete walls and scour-protected slopes. We also designed a solution for underpinning and deepening the channel at Bray Bridge.

CLIENTS: WICKLOW COUNTY COUNCIL, FUNDED BY THE OFFICE OF PUBLIC WORKS | +€20m

PROJECT:

This flood defence scheme will protect the town of Arklow against coastal and river flooding. The defence system includes a plan to deepen the river, and to construct floodwalls and an embankment as barriers against flood risk.

EXPERTISE:

Wicklow County Council appointed Ayesa as the lead engineering consultant, which included hydrological studies, river and coastal modelling, preliminary design, scheme optioneering and development, and cost-benefit analyses. The Environmental Impact Assessment Report (EIAR) included our findings and research. Throughout construction, we managed site investigations and surveys, a requirement at each project phase.

VALUE:

The scheme will protect thousands of homes and businesses in Arklow. We coordinated with other consultants during planned phases, working simultaneously in common locations to achieve economies of scale and project savings.

PROJECT FOCUS

FLOOD DEFENCE RELIEF SCHEME, ARKLOW, IRELAND

CLIENTS: BON SECOURS CANCER CENTRE | €77M

PROJECT:

Bon Secours is a 15,000m2 oncology facility located on an existing flood plain, beside the River Lee in County Cork: it is one of the largest private hospitals in Europe. Bon Secours Health System Cork is Ireland’s largest private hospital, and it is also one of the largest private hospitals in Europe. A planning application was submitted to Cork City Council on behalf of Bon Secours Health Systems for an extension to the Bon Secours Hospital at College Road, Cork, part of a €77 million expansion of the hospital.

EXPERTISE:

Ayesa was retained on behalf of Bon Secours Health Systems to review the proposed development in the context of flood risk from the River Lee South Channel to the development itself and the risk to other properties as a result of the development, to assess and quantify the flood risk, to develop measures to manage and mitigate the flood risk and to apply the Justification Test in accordance with the “The Planning System and Flood Risk Management – November 2009”.

Our flooding team worked with the project team including the client, planners, architects and structural engineers to ensure that the development could be delivered with planning permission and also satisfy the requirements of the hospital to deliver a first class health service. A Flood Risk Assessment & Management Plan together with a Justification Test was prepared by Ayesa for submission to ABP in response to the third-party appeal.

VALUE:

The project was challenging as the hospital extension would be located in flood Zone A of the River Lee south channel. As such, modifications to the development were put forward to manage any impact on flood storage and ensure that the facility would remain functional during a flood event. The grant of planning was subsequently upheld by ABP and the new extension was formally opened in 2019.

PROJECT FOCUS

FLOOD RISK AND MANAGEMENT

BON SECOURS CANCER HOSPITAL CORK, IRELAND

CLIENTS: FERROVIAL AGROMAN LAING O’ROURKE (FLO) | BARHALE

PROJECT:

We provided temporary works design and ground monitoring/assessments at two locations; Tideway Central for FLO and also at Victoria Embankment on behalf of Barhale.

EXPERTISE: The Thames Tideway Tunnel is a major new sewer, spanning 25km across London with shafts measuring up to 60m deep. It will protect the River Thames from pollution during high tides. With a completion date of 2024, it will prevent overflows from London’s Victorian sewage systems.

PROJECT FOCUS

THAMES TIDEWAY TUNNEL

LONDON, UK

HELPING YOUR PROJECT GET THE MOST OUT OF INFRASTRUCTURE AND ASSETS TO PROVIDE RESILIENCE AND VALUE OVER TIME.

HYDRODYNAMIC MODELLING, BAHRAIN

Hydrodynamic modelling is the study of fluids in motion, generated by tide, wind and waves (metocean), gradient (river flows, weirs, dams and turbines) or water meeting at oceans, rivers and cooling water discharges. Hydrodynamic movement can impact solid bodies in the fluid (e.g. structures, seabed features and land boundaries), which in turn affects its behaviour. Understanding and quantifying these complex interactions is essential for effective and sustainable development of infrastructure and assets.

WATERMAINS REHABILITATION NETWORK, UK

Rehabilitating 100km of watermains

This project involved the detailed design of watermain rehabilitation works in association with BSG Civil Engineering build project for Northern Ireland Water (NIW). The scheme will benefit thousands of consumers by improving the quality, reliability of local water supply. Ayesa is responsible for the detailed design (concept and preliminary) of 100km of water site investigations, risk assessments, scheme rationalisation, preparation of construction information and site packs for teams. In successfully delivering this framework, Ayesa will work closely with BSG Civil Engineering to bring construction project.

Engineering on a designquality, security and water mains, site surveys, for use by construction construction efficiencies to the

ASSET OPTIMISATION

£250 MILLION PROJECT

DEEPHAM’S SHAFT, LONDON

While upgrading Deepham’s Sewage Treatment Works (STW), the contractor, Murphy Construction, commissioned Ayesa to design the new pumping station, which was challenging due to the depth and width of the structure. Our final design set a record for innovation by pushing the limits for acceptable secant pile depths in the UK. The project went on to win a civil engineering award at the Concrete Society Awards. This STW is now one of the largest wastewater treatment plants in the UK, with the capacity to serve 1 million people.

CLIENT: MURPHY GROUND ENGINEERING | BNM ALLIANCE

PROJECT:

As part of Severn Trent’s overall strategic resilience plan, the ageing Elan Valley Aqueduct required rehabilitation. The aqueduct delivers vast quantities of water to Birmingham City, sourcing water from the Caban Reservoir in Powys, Wales.

EXPERTISE:

The project required deep excavation around the 110-year-old aqueduct. The project was challenging, as an ageing structure meant restricted movement on site, and the water system was to remain fully operational throughout construction. We successfully developed efficient design solutions which minimised requirements for temporary support making significant savings for the client.

VALUE:

By collaboration with Murphy Ground Engineering Ltd., and BNM Alliance (Barhale & North Midland Construction), we developed a solution to mitigate the risk of damage to the existing aqueduct, during works.

PROJECT FOCUS

ELAN VALLEY AQUEDUCT WALES

CLIENT: AL HASSANAIN CO | SALINE WATER CONVERSION CORPORATION (SWCC)

PROJECT:

The Saline Water Conversion Corporation (SWCC) are constructing phase 2 of their desalination plant in the Kingdom of Saudi Arabia, Al Jubail. Ayesa was appointed by Al Hassanain Co. through an EPC contract to deliver the marine works package detailed design for the intake and outfall pipelines and all associated structures.

EXPERTISE:

As the engineering designer for Al Hassanain Co, our role included detailed design of all scope items associated with the intake and outfall pipelines. This included detailed analysis of the hydraulic modelling, onbottom stability, pipe stress calculations, structural design of reinforced concrete anchor block collars and intake tower, outfall diffuser design, battery limit connections and constructability assessments. Within the design, Ayesa delivered reporting for each key design item as well as IFC drawings which included all reinforced concrete rebar scheduling.

VALUE:

Our design enabled the delivery of significant infrastructure which included HDPE pipeline diameters of 3.0m and 2.8m for the intake and outfall respectively. Our water team worked closely with Al Hassanain Co. to ensure material preferences were included within the design which assisted Al Hassanain Co. procurement programme. Our designs reflected Al Hassanain’s construction methodologies including lifting and casting sequences and provided construction assistance with pipe pull out requirements and sinking methodologies. Our design engineers located within the Middle East were well-positioned to attend design workshops meetings and site visits, when required with an attentive service for both client and employer SWCC.

PROJECT FOCUS

Al JUBAIL SWRO DESALINATION PLANT PHASE II

CLIENT: MANATEQ

PROJECT:

Al Wakra Logistics City (AWLC) is close to the airport and port. It is designed as a logistics hub to provide an efficient, sustainable, and modern supply chain of goods and materials throughout Qatar. This hub will fulfil the programme requirements for the 2022 FIFA World Cup. As part of the development, Ayesa was responsible for two parcels of land (parcels A and parcels B) which approximates 4.7km2 and provide the infrastructure for water supply, wastewater and fire water facilities.

EXPERTISE:

Our role included the design of the following: wet utilities, 15 km foul network, foul pump station and holding tank, 26km potable water network, potable water reservoir and pump station, 35km fire water network (approx. 35Km) and fire water reservoir and pump station.

VALUE:

We managed the submissions during the approvals processes for the design and construction of the scheme, on behalf of Ashghal (the local public works authority, the General Directorate of Civil Defence (GDCD) and Kahramaa (Qatar’s Water & Electric utility).

CLIENT: DIYAR AL MUHARRAQ

PROJECT:

The upgrade of the sewer network included a 23m deep pumping station as part of the scheme. To help build the pump station, deep within the ground, we designed a diameter shaft with 900mm interlocking male and female secant piles.

EXPERTISE:

We conducted a review of the design and the value engineering of this deep shaft. Our audit assessed the structural design and processes, examined the geotechnical approach and made recommendations for the final configuration, including drilling methodologies and water-cut-off. We also advised on the dewatering strategy in an aggressive marine environment.

PROJECT FOCUS

DIYAR AL MUHARRAQ PUMP STATION BAHRAIN

85,000M3PERDAY|DEPTHOF23M

PROJECT:

The project is a part of the country’s road building programme, which is designed to reduce congestion, improve traffic flows, journey times and improve environmental impacts. The Doha Expressway is Qatar’s first freeway.

EXPERTISE:

The project scope included a detailed design of the hydraulic, civil, structural, and geotechnical elements. We also provided the detailed design of a stormwater tunnel, 2,400mm in diameter, 7km long with 20 shafts. We designed the groundwater collection system, including five underpasses, which prevented floatation and flooding of structures. The system incorporates internal diameter VC pipes between manholes, which connect to the stormwater tunnel at various shaft locations. The hydraulic design of the sewer’s micro tunnel prevented the overloading of shafts and flooding of the groundwater systems.

CLIENT: PUBLIC WORKS AUTHORITY (ASHGHAL) | AL JABER | QAR 1BN

PROJECT FOCUS

DOHA EXPRESSWAY, GROUND WATER COLLECTION SYSTEM QATAR

•

SERVICES IN-DEPTH

WATER SUPPLY

OUR SPECIALTIES RANGE FROM WATER AND WASTEWATER TREATMENT PLANT DESIGN, PROCESS DESIGN, NETWORK ANALYSIS AND HYDRAULIC MODELLING THROUGH TO CONSTRUCTION SUPERVISION.

Hydraulic modelling

Network calibration and verification

Pipeline route selection and route proving

Utility diversion management & NOC procedures

Demand analysis and water balance assessment

Chlorine residual analysis

Storage assessment and design

Pressure optimisation and pumping analysis

Pumping station design

Value engineering

Tender and contract documentation

Chemical processes (coagulation, flocculation, precipitation)

Ultra filtration

Reverse osmosis

Disinfection systems

WASTEWATER

COLLECTING AND TREATING WASTE WATER AND SOLVING DRAINAGE PROBLEMS WITH INNOVATION

• FEED reports

• Primary, secondary and tertiary process designs

SCADA , control and alarms/electrical/mechanical rotary and static/process/hydraulic/ structural

• Septicity control

• Sludge treatment & recycling

• Industrial wastewater treatment analysis and process selection

• Industrial process design - heavy metal recovery, metal precipitation, coagulation, flocculation, sedimentation

• Pumping station design

Micro-tunnelling design

• Odour control

• STP and IWT operating and maintenance

Pipeline designs

TSE reuse

• Surge and stress

• Wastewater collection design, sewer computer modelling

• Coordination with stakeholders, FEED, DD, IFB documents

DRAINAGE

OUR EXPERIENCE COVERS THE ENTIRE PROJECT LIFE CYCLE FROM FEASIBILITY, INVESTIGATION TO DESIGN SYMPATHETHIC TO THE ECOSYSTEM & ENVIRONMENT

• Drainage strategies

• SuDS advice

• Impermeable area surveys/runoff design

Drainage network modelling

• Culvert design

• Ground analysis

• Environmental assessments

FLOOD RISK MANAGEMENT

FLOOD MITIGATION SYSTEMS TO PROTECT COMMUNITIES, BUSINESSES AND THE ENVIRONMENT

• Topographical & bathymetric survey management

• Aerial /Lidar/ DTM surveys

• Hydrological studies

• Surface water modelling

River modelling

• Coastal modelling

• Flood risk assessments & appraisal

• Flood risk/hazard mapping

• Feasibility studies

Design of flood defence systems

Natural flood risk management measures

• Flood defence condition surveys

• Flood early warning systems

• Hydrological studies

Coastal modelling

Flood estimation

• River modelling

• Flood risk management plans

• Hydrodynamic modelling & assessment

• Environmental Impact (EI) & Appropriate Assessments (AA)

ASSET MANAGEMENT/OPTIMISATION

GETTING THE MOST OUT OF INFRASTRUCTURE AND ASSETS

• Project management

• Procurement management

• Asset performance predictions

Programme management

• BIM & digital engineering assessments

Whether it’s designing pump stations buried deep within the ground, or solving issues when building complex structures in difficult terrain, designing storm tunnels in busy urban centres, flood mapping for prevention and planning, you’ll find our engineers making that difference.

We innovate towards efficiency in projects.

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Ayesa is a global engineering, technology services provider with 12,000 employees, 23 locations and 649 million euros in turnover. Ayesa is in the top 50 (ENR:2023) International engineering design firms of the world. ayesaeng.com

Memberships

technology consulting firm with 6000 employees, 20 locations and 300 million euros in revenues. Ayesa is in the top 50 engineering firms of the world. ByrneLooby, an Ayesa Company provides engineering & consulting services for government, semi-state and private clients in the following sectors: marine and coastal, geoscience, buildings, transportation, energy, environment, water, flooding, waste management and conservation. Visit us here

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