WJ Qatar Projects Archives

Passenger Terminal Expansion Works

RiotSpace Creative June 7, 2021

The Hamad International Airport terminal expansion project will include an additional 140,000 sq.m terminal building, located airside, adjoining the existing terminal building through Concourse C with an axis that will culminate into a central garden. It will include a new transfer area which will help shorten passenger’s connection time and will improve their overall transfer experience at HIA. This will also contribute to servicing the continued growth of HIA’s national carrier Qatar Airways.

The Passenger Terminal Expansion Works, Central Concourse Building and Early Works (PTEW) was awarded to the joint venture of Midmac Contracting, TAV Tepe Akfen Investment Construction and Taisei Corporation on November 2019.

The scope of work consisted of:

Central Concourse Expansion Building and Apron Works
Diversion of existing utilities
Demolition of existing Fixed Jet Bridges
Underground Automated People Mover Station Box

Remote Underground Chilled Water network connecting Central Utility Plants

Scope of dewatering works is consist of the construction of APM Box, Cup 2 & Cup 4 connection and Central concourse (Pile caps). The APM box structure is composed of a 151.2m long by 25m wide with 2 nos. of monitoring well and 14 nos. of deepwells at the depth of 27m BGL. For Central concourse (Pile Caps) is composed of a 4m long by 4.4m wide with sump pumping technique is implemented and for CUP 2 & CUP 4 connection which is composed of 100m long by 9.4m wide consisting of sump pumping using surface suction diesel pump technique supplementary with trenching system.

The groundwater level encountered at the range of +0.39m QNHD and -1.19m QNHD at West and East of existing Concourse and the groundwater level at APM area is found in the range of -0.78m QNHD and -1.42m QNHD.

The system is supplied complete with pumps with standby units, power supply system, control panels with suitable alarm system and 24hr monitoring team.

LOCATION: Hamad International Airport, Doha, Qatar (25.2609° N, 51.6138° E)
CLIENT: Qatar Company for Airports Operation and Management (MATAR)
PROJECT MANAGER: HILL-DAR JV
MAIN CONTRACTOR: MIDMAC-TAV-TAISEI Joint Venture

Qetaifan Island Infrastructure Works

RiotSpace Creative June 7, 2021

Qetaifan Island North is located off Lusail City, Qatar. Designed to be Qatar’s future iconic destination; the project spans approximately 1.3 million square meters.The island also features exciting entertainment attractions, luxurious hotels, pedestrian friendly streets and world class facilities.

The project, Qetaifan Island North Phase 1 Development Package 4 – Infrastructure Streetscape & Linear Park. The project is consist of the construction of shafts/manholes for Foul Water & Surface Water drainage in Qetaifan Island.

WJ installed the deep well dewatering scheme supplemented by sump pumps and Diesel pumps for 29 shafts which has a depth of -3m BGL to -11m BGL & Width of maximum 8mx8m.The trenches depth of -3m BGL to -6m BGL and length of 1700m & Width of 6m. This system will facilitate an advanced drawdown keeping a dry and stable working condition at all times as the excavation works progresses. Additionally, The ground fissures/ cavities are encountered, additional sump pumps can be installed to try managed the situation. In total 18 dewatering wells installed for UR12 area and 12 deep wells for SW1 area, 24 Diesel pumps and 14 Sump pumps were used for SW2 and SW4 area.

We have two discharge locations in this project, with Electromagnetic flow meters to monitor the flow rate. For the quality control of discharging water have a combination setup of Lamella clarifier with settlement tank.

Although the Project began at the start of August 2020, The installation works has progressed during day time hours, only monitoring to be undertaken during Night hours.

LOCATION: Lusail City, Qatar
CLIENT: Qetaifan Projects
MAIN CONTRACTOR: Consolidated contractors group (CCC)/TEYSEER COMPANY WLL – JV

Al Mohanndi Project Site

RiotSpace Creative June 7, 2021

Road Surrounding FIFA Training Site Adjacent to Golf Course (Zone-69)

WJ Groundwater is a specialist contractor for providing different types of dewatering solutions for various types of infrastructure projects including Deep Shafts, Shallow Manholes, Pipeline Trenches, Underground Tanks, etc.

The Road Surrounding FIFA Training Site Adjacent to Golf Course (Zone-69) is located Lusail, Doha, State of Qatar and it is a part of Ashghal’s Interim Road Improvement Doha South Phase -2 Project. The Works comprise the construction of temporary/permanent roads including Surface Water Drainage, Foul Sewage, TSE, ITS, Telecommunication, Protection of existing utilities, provision of future services ducts, street lighting works, traffic signals and water main dry leg crossings.

WJ Qatar was appointed by Al Mohannadi to provide stable and dry working conditions for the excavation of Shallow Manholes and Open Trench of Surface Water Drainage and Foul Sewage. WJ proposed a cost-effective Sump Pumping method for dewatering approximately 80 shallow manholes with depth varies from 3.0m to 6.0m below the existing ground level.

Since the Discharge of groundwater to the Lusail Stormwater network and also to maintain the water quality as per the Lusail requirement, we have installed Lamella Tanks with a capacity of up to 100 liters per sec to reduce the Turbidity and TSS.

Location: Lusail, Doha, Qatar
Client: Ashghal
Consultant: Gulf Engineering & Industrial Consultancy (GEC)
Main Contractor: Al-Mohannadi for Roads Trading & Contracting (MRTC)

Pump Rooms for Lusail Development

WJ Groundwater Admin July 6, 2016

WJ was engaged by Nakheel Landscapes to assist in the dewatering works for this multi-million development-wide landscaping project in Lusail, Doha, Qatar.

The sub-contract works involve the dewatering of the excavations for the five plant rooms. A plant room excavation was a modest 15m x 10m in plan, and extends down to 3m below the sea level. It has an open cut excavation literally a few meters away from the sea.

Lusail Development required that the turbidity of the dewatering discharge effluent be less than 5NTU. We installed our own SANDBUSTER Lamella Clarifier tanks to address the issue, and its been a crystal clear discharge ever since.

MAIN CONTRACTOR: Nakheel Landscapes
CONSULTANT: Dorsch
CLIENT: Lusail Development

Hamad International Airport Station Box

WJ Groundwater Admin July 6, 2016

Precision. Accuracy. Patience

The Hamad International Station Box is a sub-surface structure composed of (approximately) a 305m long by 25m wide by 20m deep box with two abutting single level MEP zones approximately 10m deep. The Station Box is directly adjacent to the airport lagoons which are connected to the Arabian Gulf. The groundwater table has been encountered at about +0.5m QNHD, or about 2.5m below the current ground level. Excavation of the box was done using a top-down method.

Part of the requirements in the construction of the station box is monitoring the movement or behaviour of the structural elements such as the diaphragm wall, concrete beams, plunged columns and temporary steel props; and the movement of the ground and nearby structures surrounding the box.

Automated In-place bi-axial inclinometers were used to monitor wall deflection, both the x and y directions. These instrument record sub-millimeter movement of the diaphragm wall on an hourly interval, and the data were instantaneously processed and the results were accessible at almost real time. The In-place Inclinometers were also supplemented by manual inclinometer which were surveyed 3x a week. Ground settlement were monitored using precise levelling, and wall movement of the nearby bridges were monitored using 1” (one-second) Total Station.

Vibrating wire strain gauges were used to monitor the load of the concrete beams, plunged columns and the temporary props. These instruments were hard-wired to dataloggers, which sends all the data remotely to a central monitoring PC. An audio-visual alarm was also connected to the datalogger, which tripped whenever the set limit is breached. The amber trigger limits were breached several times, but no red trigger limit was ever encountered.

During the excavation stage, the Monitoring Group consisting of Group Five’s Project Manager and WJ’s expert reporter convened daily to discuss the results of the monitoring.

Precision. Accuracy. Patience. Confidence!

MAIN CONTRACTOR: Group Five Construction
ENGINEER: Mott MacDonald
PROJECT MANAGER: MACE
CLIENT: NDIA Steering Committee,

Sheraton Park Project

Neil.Coulter May 26, 2016

WJ confidently deliver successful projects of all sizes, and this commission was certainly a big one!

The Sheraton Park project is situated in a prime location on Doha’s Corniche between, the Sheraton Hotel and the Doha Exhibition Convention Center.

The project is expected to provide an iconic public landscaped park, complying with high standards of aesthetics, quality and safety for residents and visitors of Doha. The project consists of five water-themed features, uniquely folded hard and soft landscaping with flowering trees and shrubs, children’s play area, two sunken gardens with adjacent restaurants, an underground four-level car park for 2,664 cars, an underground connecting tunnel link (under the Corniche) for overflow traffic from Doha Exhibition and Convention Centre and a 66KV primary power substation.

The excavation is approximately 500m by 250m in size with approximate total perimeter of 1,270m. General excavation formation level is at -3.5m QND and extends down to a maximum of -14.3m QND. The total perimeter length of the deeper excavation is approximately 900m. Shoring system would be by contiguous piles, secant piles and shotcrete & nails.

WJ Groundwater installed a deepwell dewatering system which successfully drained the excavation.

LOCATION: Doha, Qatar
CLIENT: Sheraton Hotel
CONSULTANT: Qatar Project Management
MAIN CONTRACTOR: Qatari Diar – Vinci Construction JV

QP Financial District

Neil.Coulter May 26, 2016

Our first project in Qatar, we certainly began big and quickly established our reputation for excellence and innovation.

Formerly known as the Barwa Financial District, the QP District project consists of nine towers, one hotel and an energy centre.

Situated in the new West Bay business district of the capital, Doha, the QP District is a gigantic commercial development project located on a plot of 7 hectares. With the nine towers mainly consisting of office space, there will be some room for a number of restaurants and shops located on the ground floor, which will be of benefit to the occupants who will be keen to avoid the sky high temperatures during the summer months.

The hotel, whose brand identity remains nameless, will be located at the southern-most point of the site, ensuring that international guests can be located nearby to what will be a centre for Doha’s financial sector. Located just to the south-east of the Ezdan Tower, the QPD project occupies a prime position within the West Bay area, allowing both easy accessibility for staff and visitors, as well as some extraordinary views.

In 2008, WJ Groundwater designed, installed and operated its first project in Qatar. The project is a sizeable 250 x 300m excavation, with a total perimeter of 1,100m. The plot is supported by contiguous piles. A deepwell dewatering system was installed around the perimeter of the plot to achieve a general excavation level, and several internal wells were installed for the tower basements.

LOCATION: Qatar, United Arab Emirates
CLIENT: Qatar Petroleum / Barwa
CONSULTANT: KEO International Consultants
MAIN CONTRACTOR: Bouygues-Midma-Al Jaber JV / Swissboring

Lusail Expressway

Neil.Coulter May 26, 2016

Lusail Expressway is one of the largest among 30 road projects to be developed as part of Qatar’s seven-year Expressway Programme.

Initiated in 2010 to connect people and places across the city of In 2010, Qatar’s seven-year Expressway Programme consists of 30 road projects, with the aim of connecting people and places across the city of Doha and wider Qatar. Nine hundred (900) kilometres of new road network involving a number of underpasses, flyovers and multi-level interchanges are expected to be delivered.

The Lusail Expressway is one of the biggest to be developed, with 5.3 km of four-lane highway in both directions, two cofferdams and three major interchanges; the Al Wahda Interchange, Onaiza Interchange, and the Pearl Interchange.

The Expressway will also have two service lanes in the multi-level interchange areas, and include a complex network of tunnels, flyovers and junctions in order to meet the future traffic demands by providing easy and speedy connectivity.

Dewatering of the project proved a challenge, as unforeseen and unexpected cavities and fissured flows were encountered, with at the peak flow in excess of 10,000 m3/hr for one of the underpasses! However, WJ rose to the challenge and dewatering was achieved with deepwell system and supplemented with sump pumping.

LOCATION: Qatar, United Arab Emirates
CLIENT: Ashghal (Qatar Public Works Authority)
CONSULTANT: CDM Smith / AECOM / KBR
MAIN CONTRACTOR: Hyundai Engineering and Construction